The Mr. Heater MH25NG garage heater is a quiet, odor-free, and low maintenance option for heating your garage. At 25,000 Btu, this unit is powerful enough to heat up to 500 square feet. It uses radiant heat, so it doesn't waste fuel heating the surrounding air (it doesn't use any electricity, either). The heater comes fully assembled out of the box--all you have to do is mount it and hook it up to your existing natural gas line. Includes free "How To" video. Do not use in inhabited or small, enclosed areas. AGA design certified. One-year warranty on gas control; five-year warranty on burner.--Josh Dettweiler
What's in the Box
Heater, bracket, lag bolts
Five Tips for Buying a Heater
Choosing 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.
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 25000 BTU
This is a really nice unit if it fits your purpose. I must stress however, that is if it fits your purpose. As I now realize, 25,000 BTU/hr is not an enormous amount of heat. This unit really is designed for use in a closed in space w/ minimal air curculation. The heating method is to raise the temperature of all objects in the radiant field so that the space stays warm. A breeze or draft will reduce it's ability to maintain the heat. The unit comes with a thermostat for mounting on a wall and setting a desired heat. I've eliminated the thermostat and just hard wired the unit. If it's cold enough to have it on, then I want it on. Mr. Heater advertises using the term "millivolt" ignition or something to this manner. This is misleading. This is not a electronic ignition unit!!! This means the unit has a pilot light. The pilot light heats a thermocouple which provides the "millivolt" current they refer to. The thermostat either "opens" or...
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Good space heater
I have used this in my garage for several years now, if I have my garage door closed it will warm the space pretty well. Directly under the heater its really nice and toasty, but the furthest corner of the garage will still be cold. In a 20-degree day with the garage door closed (I have a two-car garage with most of the garage walls NOT insulated), I get over 70 degrees directly under the heater (where I usually change the oil etc.) and at least 40 degrees at the coldest corner of the garage. Most of the garage becomes very comfortable to work in, that I usually don't even need to wear a jacket. BUT - as soon as I open the garage door, I lose all the warm air and it takes a little while to heat the whole place back up. That being said, I typically also let it run for an hour or so before I start working on my car, just so I know the area is nicely heated.
Hope that helps. :)
Good cheap garage heater
I purchased this heater about 2 years ago to keep my garage about the freezing level, principally to melt ice and snow from the cars, but also to provide a comfortable sleeping environment for my dog (and to keep his water from freezing). For this purpose, it works very well, and even keeps the snow melted from my snowthrower, which I keep on the opposite side of the garage. It was quite easy to install after getting all the proper fittings and hoses, which are not included.
I do have some complaints, which keeps me from giving this 5 stars.
1. Clearance is very important. When the burner ignites, I'm always alarmed because of the small ball of fire that the heater emits across the burner.
2. Because of the radiant heat nature, I have burned my hands while working under the heater, similar to getting a sunburn.
3. I've had problems with the pilot light going out. It is easily adjustable with a screwdriver, but is very sensitive and this...
Product Features :
- 25,000-BTU natural-gas radiant garage/workshop heater
- Heats up to 500 square feet--roughly the size of a 2-1/2 car garage
- Efficient radiant heat warms objects directly, not surrounding air
- Comes fully assembled; hooks up to existing natural-gas line; how-to video included
- Measures approximately 28-1/2 by 10 by 13 inches; 1-year limited warranty
Rating : 3.9
List Price : $299.99
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