What, exactly, is a BTU anyway?

A BTU (British Thermal Unit) is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. Generally speaking, typical home furnaces in the Midwest are 75,000 to 100,000 BTUs. The Grate Heater produces up to 40,000 BTUs each hour!

Why doesn't the heat from the fire break the unit?


The Superior Grate Heater forces cool air through the unit, which cools the internal components down. All of the electrical components are warranted for one year, and the metal workmanship is warranted for five year-so you can operate this unit worry free.

What keeps the heater from blowing the exhaust gases into the room?

The Superior Grate Heater runs air through steel pipe and is only drawing and blowing air from the room.


Does the unit ever need to be cleaned/washed down?

It is a good idea to vacuum the intake grate on the front bar of the grate. This is where the room air is entering the unit.

How long dare I run this at any one time? As long as I have a fire going, could I run it for, say, six hours straight?

There is no time limit. This unit's blower is operated by variable speed swith and is also equipped with a thermostatically controlled switch which turns the blower off the the temperature frops below 90 degrees.

How much money am I likely to save on my heating costs?

There is no way to accurately predict the cost savings, we can tell you that the average home heating system for a 2,000-square-foot home in the Upper Midwest is 80,000 BTUs. With the Superior Grate Heater producing up to 40,000 BTUs, that will relieve the furnace of a big chunk of its heating responsibility. With the Superior Grate Heater, you can keep the house thermostat cooler, yet have the fireplace room nice and cozy. And the leftover heat has to go somewhere so it wanders through the rest of your home.

Will my living area be uncomfortably warm?

Perhaps, but isn't that a nice problem to have? You can control the heat many ways:
- Use the blower speed control (rheostat) on the Superior Grate Heater to lower the heat output.
- Use less wood.
- Simply use the continuous fan-on switch on the thermostat of your home's forced-air heating system.
- Turn on the blower-only function of your forced-air home furnace to help distribute the air around the house.
- Open an outside window or door to let in some cool, fresh air.


Can I use the Grate Heater in a "Zero-Clearance" fireplace?

This product is not designed for installation in "zero clearance" fireboxes or mobile homes, or in conjunction with gas log sets. Zero-Clearance fireplaces, also called "pre-fabs" or manufactured fireplaces, usually have a opening which is raised up higher than the hearth extension out front. The Superior Grate Heater cannot compensate for that difference. The hearth extending out beyond the burn floor must be equal to, or higher than, the burn floor itself. Also, pre-fab doors usually can't be raised the required inch and three-eighths to sit up on top of the front bar of the Superior Grate Heater.

What if the inside of my fireplace drops down from the hearth extension out front?

This unit includes adjustable legs you can simply adjust to make up the difference.

How long is the power cord?

The power cord is 6 feet long.