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(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.
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Mr. Heater MH35LP 35,000-BTU Propane Radiant HeaterProduct Description: 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 DettweilerWhat'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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