Mr. Heater MH125LP Salamander 125,000-BTU Portable Propane Radiant Heater Review

Average Reviews:

(More customer reviews)This unit looks extrememly well made, like other Mr. Heater products. But unlike their tiny portable units there is NO WAY to turn down the heat. 125000 BTUs is a LOT of heat, enough for nearly 3000 square feet. But it consumes nearly 5.5 gallons of propane per hour to do so. That would be OK for really cold conditions. But it is all or nothing. There is no thermostat or , as previously stated, way to turn down to a lower heat setting. I found a similar unit at Grainger that has three heat settings, (50/95/125,000 BtuH Output) and is priced the same, so I am sending this one back.

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The Mr. Heater MH125LP 125,000 Btu portable propane radiant heater is perfect for large construction sites, workshops, and the like. MH125LP is a radiant heater, which means it directly heats objects instead of the surrounding air, and this model gives you 360 degrees of directional heat. You can get up to 17 hours of use from a 100-pound (minimum) propane cylinder. Hook-up is simple using the included hose and regulator, and handy jobsite features include a folding handle, transport wheels, and convenient piezo push-button igniter. Rugged steel construction means that this heater is going to last, too. CSA Certified. One-year limited warranty.--Josh Dettweiler
What's in the BoxHeater (knob control valve, filter/diffuser, orifice pilot, thermocouple, pilot burner, regulator , ignitor, piezo, axle with brackets, handle, wheel, valve supply tube, valve supply tube clamp, burner manifold, burner, hose assembly 12'), hose, regulator, owner's manual

Five Tips for Buying a HeaterChoosing a space heater is a matter of sifting through a bewildering array of types, power ratings, and fuel sources. Let's break it down a little to make the process easier.

What are the different types of space heaters?
Radiant heaters emit infrared radiation that directly warms the objects in front of the heaters (rather than the surrounding air). If you only need heat by a desk or in a small section of a room, a radiant heater is quiet and will use very little power.
Forced-air heaters use a fan to blow air that has been warmed by metal or ceramic heating elements. A forced-air heater is appropriate for quickly heating up a small- to medium-sized room, but can be noisy.
Convection heaters draw cold air from the floor; the air is warmed by heating coils and emitted from the top of the heater. A convection heater is appropriate for quickly heating up a small- to medium-sized room, but also can be noisy.
Radiators work by heating oil enclosed in a reservoir, gradually heating the surrounding air. If heating speed isn't an issue, you might want to opt for a radiator. These are extremely quiet and effective--perfect for bedrooms.


Should I buy an electric or a combustion model?If you want a heater that will be available in emergencies, or that can heat areas larger than a single room, choose a "combustion" model--one that is powered by a gas or fuel like propane, kerosene, natural gas, or diesel. Which fuel type you choose depends largely on convenience and local availability. For example, diesel would be appropriate for a heater you take with you on long car trips.

How powerful a heater do I need?Heaters are rated by BTU, which stands for British Thermal Unit (the amount of heat needed to heat one pound of water by 1 degree F). To find out how many BTU you need:
Calculate the volume of the space to be heated by multiplying square footage by height.
Multiply that number by 4 if your insulation is poor, 3 if it's average, or 2 if it's good.
The resulting number is a ballpark figure for how many BTU you'll need.
Do space heaters cost a lot to operate? As a general rule, electric space heaters are more expensive to use than combustion models. To ensure energy efficiency, a thermostat is a must-have feature for any heater. For radiant heaters, models with a 360 degree heating surface can heat larger spaces. If you need a forced-air heater, models with ceramic elements tend to be more efficient.

Are space heaters a fire hazard?Space heaters are implicated in about 25,000 residential fires every year. To ensure proper safety, always follow the manufacturer's usage instructions and fill out the warranty card to receive informational updates from the manufacturer. Also, look for extra safety features such as an automatic shutoff switch that can shut down the unit if, for example, it gets upended. In addition, choose a model where the heating element is adequately enclosed within the unit.

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Pentair Mini-Max 100,000 BTU Propane Pool Heater for Above Ground Pools Review

Average Reviews:

(More customer reviews)This product does exactly what it advertises. It heats the pool and is quiet and efficient. The company was a pleasure to deal with, and delivery was in 2 days. Highly recommended.

Click Here to see more reviews about: Pentair Mini-Max 100,000 BTU Propane Pool Heater for Above Ground Pools

THE SMALL HEATER THAT GIVES YOU MORE! The MiniMax 100 heater is a compact, self-contained unit with an output of 100,000 BTU's and a high 82% thermal efficiency that keeps operating cost low while directing more produced heat to your pool instead of into the outside air. MiniMax features a patented thermostatic bypass valve which minimizes condensation-related calcium scaling and corrosion preserving heat transfer efficiency, quiet, dependable operation from proven burner system and a service-friendly design that includes a bronze header system for long life and union connection fittings for fast draining and easy winterization. Equipped with an electronic direct spark ignition for automatic control, and a simple plug-in 120V electric cord for easy installation. 1-Year Limited Warranty NOTE: These heaters are for residential use only.

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Hayward H100IDP1 Low Nox Induced Draft 100,000-BTU Propane Pool Heater Review

Average Reviews:

(More customer reviews)I bought this brand of heater for my above ground pool last year. I immediately started having problems. The unit started leaking before I had the gas installed! Then, the Hayward company made accusations that the alkalinity in my pool water may have caused the problem. There was no problems with my chemically balanced pool water! I could see it was a factory defect in the solder of the copper tubing. Anyway, I replaced the heat exchanger, and it seemed OK. Now, just a few months later... the heater will not work! The unit will not ignite and it is wasting gas! I attempted to resolve the situation by contacting the pool store, in which they informed me to contact a Hayward representative. After several attempts, I was unable to contact someone/anyone at Hayward. I tried to get some information from the Hayward web site... completely useless. Then trying to find someone to service this particular unit... they complained about this model H100ID1. They said they have had numerous problems with this particular heater. It is absolute junk! No help from Hayward, No help from servicers, No help from sellers,... you are on your own! Stranded with a useless pool heater. Buyer beware!

Click Here to see more reviews about: Hayward H100IDP1 Low Nox Induced Draft 100,000-BTU Propane Pool Heater

EXTEND YOUR SEASON! This powerful heater delivers 81% thermal efficiency to maximize each of its 100,000 BTU's, while its Fire Tile combustion chamber promotes the quick heating of your pool.Revolutionary induced draft technology ensures peak performance in all weather and wind conditions, so you always get the most heat for your energy dollar!Engineered for long life and low maintenance.Equipped with an electronic direct spark ignition for easy automatic control, and a simple plug-in 120V electric cord for easy installation.Available in Natural Gas or Propane, please specify below when ordering. Not for installation at an elevation greater than 2,000 feet above sea-level. Please note: This heater now comes in the color black. NOTE: These heaters are for residential use only.

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Mr. Heater MH35LP 35,000-BTU Propane Radiant Heater Review

Average Reviews:

(More customer reviews)After using one of the little Mr. Heater "Buddy" heaters, I expected this to be the same only larger. It's not.
Unlike the "Buddy", this does not have any way to regulate the heat except "on" or "off". Also, it doesn't have a pilot light. Instead, you just hold in a springloaded valve and let gas come out into the heater. There is a piezo sparker that is supposed to light it up, but I have not found it to work very well. However, using a match works OK, and a lighter-on-a-stick (for BBQs and fireplaces, etc.) would work even better.
But once it is lit, it really works quite well. Radiant heaters don't heat the air directly, so the heat tends to be fairly even by the time the surrounding objects start heating the air. This does take some time, though, depending on the size of the space you are heating.
Also, unlike the "Buddy", this requires ventilation, both at the ceiling and at the floor.
Shutoff is done just by shutting off the valve on the propane tank. There is a safety switch, however, which prevents the heater from continuing to pump the place full of propane if the flame goes out.
This is really more suited to a sheltered environment, like an unfinished garage or a carport, but not an indoor environment (like a house). I have used it in my garage. It's fairly quiet in operation, though it does moan during startup.
It runs off of a regular BBQ-sized propane tank (or bigger). According to the manual, it will not work properly running from a smaller tank.

Click Here to see more reviews about: Mr. Heater MH35LP 35,000-BTU Propane Radiant Heater

The Mr. Heater MH35LP 35,000 Btu portable propane radiant heater is perfect for construction sites where you don't need to heat more than 800 square feet. The MH35LP is a radiant heater, which means it directly heats objects in front of it instead of the surrounding air. This makes it very efficient: you can get up to 12 hours of use from a 20-pound propane cylinder. Hook-up is simple using the included hose and regulator, and handy jobsite features include a folding handle, transport wheels, and convenient piezo push-button igniter. Rugged steel construction means that this heater is going to last, too. CSA Certified. One-year limited warranty.--Josh Dettweiler
What's in the BoxHeater (cont. M-N SS port, burnr/ltfr portables, orifice/burner, thermocouple assembly, tip-over switch, junction block adapter kit, regulator, ignitor, piezo, wheels, handle, two handle-locking knobs, lower main-frame assembly), hose, regulator, owner's manual

Five Tips for Buying a HeaterChoosing a space heater is a matter of sifting through a bewildering array of types, power ratings, and fuel sources. Let's break it down a little to make the process easier.

What are the different types of space heaters?
Radiant heaters emit infrared radiation that directly warms the objects in front of the heaters (rather than the surrounding air). If you only need heat by a desk or in a small section of a room, a radiant heater is quiet and will use very little power.
Forced-air heaters use a fan to blow air that has been warmed by metal or ceramic heating elements. A forced-air heater is appropriate for quickly heating up a small- to medium-sized room, but can be noisy.
Convection heaters draw cold air from the floor; the air is warmed by heating coils and emitted from the top of the heater. A convection heater is appropriate for quickly heating up a small- to medium-sized room, but also can be noisy.
Radiators work by heating oil enclosed in a reservoir, gradually heating the surrounding air. If heating speed isn't an issue, you might want to opt for a radiator. These are extremely quiet and effective--perfect for bedrooms.


Should I buy an electric or a combustion model?If you want a heater that will be available in emergencies, or that can heat areas larger than a single room, choose a "combustion" model--one that is powered by a gas or fuel like propane, kerosene, natural gas, or diesel. Which fuel type you choose depends largely on convenience and local availability. For example, diesel would be appropriate for a heater you take with you on long car trips.

How powerful a heater do I need?Heaters are rated by BTU, which stands for British Thermal Unit (the amount of heat needed to heat one pound of water by 1 degree F). To find out how many BTU you need:
Calculate the volume of the space to be heated by multiplying square footage by height.
Multiply that number by 4 if your insulation is poor, 3 if it's average, or 2 if it's good.
The resulting number is a ballpark figure for how many BTU you'll need.
Do space heaters cost a lot to operate? As a general rule, electric space heaters are more expensive to use than combustion models. To ensure energy efficiency, a thermostat is a must-have feature for any heater. For radiant heaters, models with a 360 degree heating surface can heat larger spaces. If you need a forced-air heater, models with ceramic elements tend to be more efficient.

Are space heaters a fire hazard?Space heaters are implicated in about 25,000 residential fires every year. To ensure proper safety, always follow the manufacturer's usage instructions and fill out the warranty card to receive informational updates from the manufacturer. Also, look for extra safety features such as an automatic shutoff switch that can shut down the unit if, for example, it gets upended. In addition, choose a model where the heating element is adequately enclosed within the unit.

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Mr. Heater MH42T 42,000-BTU Propane Tank-Top Radiant Heater Review

Average Reviews:

(More customer reviews)The triple burner Mr. Heater works wonderfully! Now this is what you call a radiant heater! Prior to purchasing Mr. Heater I was using a Bernzomatic patio heater (that cost significantly more) that didn't heat very well - I had to practically hug the Bernzomatic to feel heat. The triple burner Mr. Heater keeps me toasty warm! I love the red glow it gives off too! I installed Mr. Heater on a 40 lb. propane tank - this is just the right height to keep me warm while on my deck swing.
Mr. Heater isn't a particularly stylish unit - however, it sure does heat well!
I have a few minor criticisms; overall I'm very happy -
During my first week using Mr. Heater the burners kept shutting off - they would not stay lit for very long. I adjusted the thermocouples to position them closer to the burner and I haven't had a problem since.
Mr. Heater doesn't work very well in wind - it works fine in a breeze or a little bit of wind. I tried to use it on my deck in a storm with fairly gusty winds - not a good idea. The wind tended to cause the burner to ignite the chamber that carries the gas to the burner. If this happens - you'll know it.
It'd be really nice to have an electric ignition! The two burner model has this; however I really wanted a maximum amount of heat - I wanted the three burners.
It'd be really nice if the propane tank mounting hardware was adjustable for height. If I mounted Mr. Heater on a 20 lb. propane tank it'd simply be too short to set next my patio table or swing. If you could adjust the height a couple of feet that'd be nice - you can probably jerry rig something.
Overall, it heats great - an excellent value too, in relation to the cost of patio heaters (which is what I use this for).
******* 2//2010 Update *******
While it's been a great product the last couple years, another issue has become evident. Mr. Heater is not rust resistant! It's rusted to the point that I can't use it anymore. I kept it in an enclosed screened in porch so it was never exposed directly to rain. However, rain that was blown in and the summer humidity has had a big impact. I've replaced Mr. Heater with another manufacture's version that doesn't rust.

Click Here to see more reviews about: Mr. Heater MH42T 42,000-BTU Propane Tank-Top Radiant Heater

The Mr. Heater MH42T 8,000-42,000 Btu triple heater is a step up from the two-burner model, giving you the flexibility of using one, two, or three burners. The unit mounts directly to 20- to 100-pound cylinders. It uses infra-red heat, which means that it warms the objects in front of it, not the surrounding air. This gives you more heat per Btu, which means that using all three burners at the highest of the three settings will keep you warm even in miserably cold situations. Each element shuts off automatically with loss of flame. Do not use in unventilated areas. One-year limited warranty.--Josh Dettweiler
What's in the BoxHeater (manifold with safety shutoffs and orifices, twelve-inch thermocouple lead, plenum assembly, screen assembly, bolt set, replacement regulator with soft nose POL, reflector, wire guard, metal ring, collar mounting bracket assembly, hose assembly/less regulator, replacement safety shutoff with orifice, locking knob, bold with seal washer, plenum assembly with clip), owner's manual

Five Tips for Buying a HeaterChoosing a space heater is a matter of sifting through a bewildering array of types, power ratings, and fuel sources. Let's break it down a little to make the process easier.

What are the different types of space heaters?
Radiant heaters emit infrared radiation that directly warms the objects in front of the heaters (rather than the surrounding air). If you only need heat by a desk or in a small section of a room, a radiant heater is quiet and will use very little power.
Forced-air heaters use a fan to blow air that has been warmed by metal or ceramic heating elements. A forced-air heater is appropriate for quickly heating up a small- to medium-sized room, but can be noisy.
Convection heaters draw cold air from the floor; the air is warmed by heating coils and emitted from the top of the heater. A convection heater is appropriate for quickly heating up a small- to medium-sized room, but also can be noisy.
Radiators work by heating oil enclosed in a reservoir, gradually heating the surrounding air. If heating speed isn't an issue, you might want to opt for a radiator. These are extremely quiet and effective--perfect for bedrooms.


Should I buy an electric or a combustion model?If you want a heater that will be available in emergencies, or that can heat areas larger than a single room, choose a "combustion" model--one that is powered by a gas or fuel like propane, kerosene, natural gas, or diesel. Which fuel type you choose depends largely on convenience and local availability. For example, diesel would be appropriate for a heater you take with you on long car trips.

How powerful a heater do I need?Heaters are rated by BTU, which stands for British Thermal Unit (the amount of heat needed to heat one pound of water by 1 degree F). To find out how many BTU you need:
Calculate the volume of the space to be heated by multiplying square footage by height.
Multiply that number by 4 if your insulation is poor, 3 if it's average, or 2 if it's good.
The resulting number is a ballpark figure for how many BTU you'll need.
Do space heaters cost a lot to operate? As a general rule, electric space heaters are more expensive to use than combustion models. To ensure energy efficiency, a thermostat is a must-have feature for any heater. For radiant heaters, models with a 360 degree heating surface can heat larger spaces. If you need a forced-air heater, models with ceramic elements tend to be more efficient.

Are space heaters a fire hazard?Space heaters are implicated in about 25,000 residential fires every year. To ensure proper safety, always follow the manufacturer's usage instructions and fill out the warranty card to receive informational updates from the manufacturer. Also, look for extra safety features such as an automatic shutoff switch that can shut down the unit if, for example, it gets upended. In addition, choose a model where the heating element is adequately enclosed within the unit.

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Mr. Heater MH200CV 200,000-BTU Propane Convection Heater Review

Average Reviews:

(More customer reviews)I have only had this heater two days. That said, I took it home yesterday attached the propane (that was essentially all there was to set-up) and fired it up on low and it put out a pleasant heat.
This morning the temperature was about 6 below zero and I turned the heater on and set it on high. I let it run for about 15 minutes and the garage had warmed up significantly, it was at least 40-50 degrees and possibly warmer. I didn't check the thermometer (digital one in my car) until after I left the garage. But as I was driving my car away from the garage I noticed the temperature was rapidly counting down - at that point it was already down to 20 degrees - and continued down to the outside temperature of 6 below.
My garage is detached 30' X 30' with 14' high ceiling, so it was heating over 12,000 cubic feet.
This is a replacement space heater. The previous one was a Mr. Heater Portable Propane Forced Air Heater (jet heater). I was a bit worried with the fact that the new one was convection but that concern was unfounded. It actually heats the area much faster. The convection heater does not seem to put off nearly as much smell as the forced air heater, in fact it was essentially odorless. Although with this first test I did not use a fan to circulate the warm air, I am sure that will improve it's already impressive performance. Unlike the forced air heater, this one does not require an electrical connection to operate so all you have to do is supply the gas and turn it on. One possible drawback would be that I was able to use the forced air heater to thaw frozen pipes since you can direct the heat, and the convection heater won't work for that.
It does make noise as it burns the propane. If you have a weed burner, or a branding stove, that is what it sounds like. The volume increases at higher settings. It was a little quieter than the forced air heater though.

Click Here to see more reviews about: Mr. Heater MH200CV 200,000-BTU Propane Convection Heater

The Mr. Heater MH200CV 30,000-80,000 Btu portable propane convection heater is ideal for heating very large indoor spaces of up to 4,700 square feet. The convection design draws cold air up from the floor through propane burners then distributes warm air out through the top, giving you 360-degree directional heat. The unit features a piezo push-button igniter, adjustable heat output control (from 75,000-200,000 Btu), and an "Insta-Lock" system for easy, tool-free assembly. For safety, the heater shuts off with loss of flame, and the sturdy base keeps it upright. The included 10-foot hose connects to 100-pound (minimum required) propane cylinder. CSA Certified. One-year limited warranty.--Josh Dettweiler
What's in the BoxHeater, thermocouple, manual, operating instructions, regulator, 10-foot hose

Five Tips for Buying a HeaterChoosing a space heater is a matter of sifting through a bewildering array of types, power ratings, and fuel sources. Let's break it down a little to make the process easier.

What are the different types of space heaters?
Radiant heaters emit infrared radiation that directly warms the objects in front of the heaters (rather than the surrounding air). If you only need heat by a desk or in a small section of a room, a radiant heater is quiet and will use very little power.
Forced-air heaters use a fan to blow air that has been warmed by metal or ceramic heating elements. A forced-air heater is appropriate for quickly heating up a small- to medium-sized room, but can be noisy.
Convection heaters draw cold air from the floor; the air is warmed by heating coils and emitted from the top of the heater. A convection heater is appropriate for quickly heating up a small- to medium-sized room, but also can be noisy.
Radiators work by heating oil enclosed in a reservoir, gradually heating the surrounding air. If heating speed isn't an issue, you might want to opt for a radiator. These are extremely quiet and effective--perfect for bedrooms.


Should I buy an electric or a combustion model?If you want a heater that will be available in emergencies, or that can heat areas larger than a single room, choose a "combustion" model--one that is powered by a gas or fuel like propane, kerosene, natural gas, or diesel. Which fuel type you choose depends largely on convenience and local availability. For example, diesel would be appropriate for a heater you take with you on long car trips.

How powerful a heater do I need?Heaters are rated by BTU, which stands for British Thermal Unit (the amount of heat needed to heat one pound of water by 1 degree F). To find out how many BTU you need:
Calculate the volume of the space to be heated by multiplying square footage by height.
Multiply that number by 4 if your insulation is poor, 3 if it's average, or 2 if it's good.
The resulting number is a ballpark figure for how many BTU you'll need.
Do space heaters cost a lot to operate? As a general rule, electric space heaters are more expensive to use than combustion models. To ensure energy efficiency, a thermostat is a must-have feature for any heater. For radiant heaters, models with a 360 degree heating surface can heat larger spaces. If you need a forced-air heater, models with ceramic elements tend to be more efficient.

Are space heaters a fire hazard?Space heaters are implicated in about 25,000 residential fires every year. To ensure proper safety, always follow the manufacturer's usage instructions and fill out the warranty card to receive informational updates from the manufacturer. Also, look for extra safety features such as an automatic shutoff switch that can shut down the unit if, for example, it gets upended. In addition, choose a model where the heating element is adequately enclosed within the unit.

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Mr. Heater MH12T Single Tank-Top Propane Heater Review

Average Reviews:

(More customer reviews)I got a Mr. Heater Single unit about 8 years ago as a backup source of heat after hurricane Hugo knocked out our power for three weeks. It is still working fine and has come in real handy during infrequent ice storms and winter power failures.
My dad liked my single a lot so he bought a Mr. Heater Double to heat a big 3 car garage sized shop. He liked it but now thinks that a single would have worked fine as the double gets that big area heated in no time and keeps it really toasty.
My single unit works far better than gas logs to heat up a room. It does make a hissing sound that is not too loud but barely audible. A single will knock the chill off a large room in no time. A tank of propane will last about 30 to 36 continuous hours if you keep it set on low. I think this is a great alternative to other auxilary heat sources like Kerosuns or a fireplace. With an asthmatic child in our family, a kerosene heater is out of the question for us. This burns clean, creates no odor, smoke or soot. There's no maintenance, no wicks or anything like that. You can store it indefinitely untouched and then pull it out and fire it up with no preparation. I will buy another one if mine ever wears out.
I have recommended Mr. Heater to lots of my friends and family and have no reservation about recommending one to you. If you can't decide whether you need a single, double or triple I suggest trying the single first. Then if you aren't happy step up to the double or triple. It is really amazing how much heat a Mr. Heater Single generates!
It is rare to find a really good product that is durable and an excellent value. Mr. Heater is one of those rare finds. They are the Zippo lighter of auxillary space heaters in my opinion.

Click Here to see more reviews about: Mr. Heater MH12T Single Tank-Top Propane Heater

If you're looking for simplicity and convenience in an outdoor-only heater, the Mr. Heater MH12T 8,000-14,000 Btu single tank-top propane heater may be the answer. As the name implies, this unit mounts directly to the top of a five- to 20-pound propane cylinder (sold separately). To allow you to choose between conserving fuel or kicking out more heat, the MH12T has three settings, Hi (14,000 Btu), Med (12,000 Btu), and Lo (8,000 Btu). The heater shuts off automatically with loss of flame. Do not use in unventilated areas. One-year limited warranty.--Josh Dettweiler
What's in the BoxHeater (replacement safety shutoff with orifice assembly, thermocouple lead, plenum assembly, grid screen assembly, replacement regulator with soft nose POL, wire faceguard, knurled lock nut, reflector, replacement regulator H-M-L w/S.S., tank union T/C, orifice)

Five Tips for Buying a HeaterChoosing a space heater is a matter of sifting through a bewildering array of types, power ratings, and fuel sources. Let's break it down a little to make the process easier.

What are the different types of space heaters?
Radiant heaters emit infrared radiation that directly warms the objects in front of the heaters (rather than the surrounding air). If you only need heat by a desk or in a small section of a room, a radiant heater is quiet and will use very little power.
Forced-air heaters use a fan to blow air that has been warmed by metal or ceramic heating elements. A forced-air heater is appropriate for quickly heating up a small- to medium-sized room, but can be noisy.
Convection heaters draw cold air from the floor; the air is warmed by heating coils and emitted from the top of the heater. A convection heater is appropriate for quickly heating up a small- to medium-sized room, but also can be noisy.
Radiators work by heating oil enclosed in a reservoir, gradually heating the surrounding air. If heating speed isn't an issue, you might want to opt for a radiator. These are extremely quiet and effective--perfect for bedrooms.


Should I buy an electric or a combustion model?If you want a heater that will be available in emergencies, or that can heat areas larger than a single room, choose a "combustion" model--one that is powered by a gas or fuel like propane, kerosene, natural gas, or diesel. Which fuel type you choose depends largely on convenience and local availability. For example, diesel would be appropriate for a heater you take with you on long car trips.

How powerful a heater do I need?Heaters are rated by BTU, which stands for British Thermal Unit (the amount of heat needed to heat one pound of water by 1 degree F). To find out how many BTU you need:
Calculate the volume of the space to be heated by multiplying square footage by height.
Multiply that number by 4 if your insulation is poor, 3 if it's average, or 2 if it's good.
The resulting number is a ballpark figure for how many BTU you'll need.
Do space heaters cost a lot to operate? As a general rule, electric space heaters are more expensive to use than combustion models. To ensure energy efficiency, a thermostat is a must-have feature for any heater. For radiant heaters, models with a 360 degree heating surface can heat larger spaces. If you need a forced-air heater, models with ceramic elements tend to be more efficient.

Are space heaters a fire hazard?Space heaters are implicated in about 25,000 residential fires every year. To ensure proper safety, always follow the manufacturer's usage instructions and fill out the warranty card to receive informational updates from the manufacturer. Also, look for extra safety features such as an automatic shutoff switch that can shut down the unit if, for example, it gets upended. In addition, choose a model where the heating element is adequately enclosed within the unit.

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Mr. Heater 80,000 BTU Propane Convection Heater #MH80CV Review

Average Reviews:

(More customer reviews)I use the Mr. Heater 30-80K convection heater in my garage, which is roughly 625 SF with high 14 ft. ceilings, CMU block wall, un-insulated ceiling. During winter months of the teens outside, I can bring the inside temp of my garage up to 70 degrees within a short time. However, you may need to hang a box fan up near the ceiling or install a ceiling fan to circulate the heat back down, it puts out a strong trickle of heat in a 360 degree radius that is easy to regulate to keep from alternating between freezing and roasting.
The biggest plus for me with this unit it the lack of objectionable fumes as are produced by forced air kerosene heaters, the propane burns clean and is easy to purchase at my local filling station, no spills or lugging around 5 gallon containers of kerosene.
If massive amounts of heat are what you want, you should consider the forced air propane heater made by Mr. Heater. They put out massive quantities of heat in short order.
I get about 15 hours of use per 25 pound propane tank, the same type my BBQ runs on, by turning this unit on high and then shutting it down to low, alternating this cycle. You can use upwards of a 100 pound propane tank.
The unit is much smaller then I expected which is a plus, it is light and very well made and simple to use.

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The Mr. Heater MH80CV 30,000-80,000 Btu portable propane convection heater is ideal for heating large indoor spaces of up to 1,900 square feet. The convection design draws cold air up from the floor through propane burners then distributes warm air out through the top, giving you 360-degree directional heat. The unit features a piezo push-button igniter, adjustable heat output control (from 30,000-80,000 Btu), and an "Insta-Lock" system for easy, tool-free assembly. For safety, the heater shuts off with loss of flame, and the sturdy base keeps it upright. The included 10-foot hose connects to 20-pound (minimum required) propane cylinder. CSA Certified. One-year limited warranty.--Josh Dettweiler
What's in the BoxHeater, thermocouple, manual, operating instructions, regulator, 10-foot hose

Five Tips for Buying a HeaterChoosing a space heater is a matter of sifting through a bewildering array of types, power ratings, and fuel sources. Let's break it down a little to make the process easier.

What are the different types of space heaters?
Radiant heaters emit infrared radiation that directly warms the objects in front of the heaters (rather than the surrounding air). If you only need heat by a desk or in a small section of a room, a radiant heater is quiet and will use very little power.
Forced-air heaters use a fan to blow air that has been warmed by metal or ceramic heating elements. A forced-air heater is appropriate for quickly heating up a small- to medium-sized room, but can be noisy.
Convection heaters draw cold air from the floor; the air is warmed by heating coils and emitted from the top of the heater. A convection heater is appropriate for quickly heating up a small- to medium-sized room, but also can be noisy.
Radiators work by heating oil enclosed in a reservoir, gradually heating the surrounding air. If heating speed isn't an issue, you might want to opt for a radiator. These are extremely quiet and effective--perfect for bedrooms.


Should I buy an electric or a combustion model?If you want a heater that will be available in emergencies, or that can heat areas larger than a single room, choose a "combustion" model--one that is powered by a gas or fuel like propane, kerosene, natural gas, or diesel. Which fuel type you choose depends largely on convenience and local availability. For example, diesel would be appropriate for a heater you take with you on long car trips.

How powerful a heater do I need?Heaters are rated by BTU, which stands for British Thermal Unit (the amount of heat needed to heat one pound of water by 1 degree F). To find out how many BTU you need:
Calculate the volume of the space to be heated by multiplying square footage by height.
Multiply that number by 4 if your insulation is poor, 3 if it's average, or 2 if it's good.
The resulting number is a ballpark figure for how many BTU you'll need.
Do space heaters cost a lot to operate? As a general rule, electric space heaters are more expensive to use than combustion models. To ensure energy efficiency, a thermostat is a must-have feature for any heater. For radiant heaters, models with a 360 degree heating surface can heat larger spaces. If you need a forced-air heater, models with ceramic elements tend to be more efficient.

Are space heaters a fire hazard?Space heaters are implicated in about 25,000 residential fires every year. To ensure proper safety, always follow the manufacturer's usage instructions and fill out the warranty card to receive informational updates from the manufacturer. Also, look for extra safety features such as an automatic shutoff switch that can shut down the unit if, for example, it gets upended. In addition, choose a model where the heating element is adequately enclosed within the unit.

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