All high-efficiency condensing gas furnaces have the unique feature of two heat exchangers — a primary and secondary — whereas the mid-efficiency furnace only has one. The primary heat exchanger is ...

How is a condensing gas furnace different ... This requires an extra heat exchanger inside the furnace which condenses the water vapor in the hot exhaust gases back into water.

A heat exchanger isn’t necessary in an electric furnace, which doesn’t burn anything. But every gas- and oil-burning furnace must have one. John Gabrielli, owner of Air Temp Solutions ...

What Types of Fuel Can Be Used by a Furnace’s Heat Exchanger? There are several types of fuels that a heat exchanger can use to create heat. Natural gas is most common however, liquid propane ...

An indoor unit houses more condensing ... a heat source, heat exchanger and a blower. Some fuel-burning ones have flues to exhaust combustion gases. High-efficiency gas furnaces don’t need ...

The CMPEV is an upflow/horizontal left, two-stage, variable-speed condensing gas furnace ... states the manufacturer. The furnace has a limited lifetime warranty on the heat exchanger and a five-year ...

Your everyday gas furnace ... furnaces or condensing furnaces, eliminate half of that heat loss. This is one reason they have become so popular. The addition of a secondary heat exchanger to ...

Natural gas furnaces not only heat your home, they also produce a lot of pollution. Even modern high-efficiency condensing furnaces produce significant amounts of corrosive acidic condensation and ...

Fuel efficiency requirements for home furnaces are ... nearly all of the gas used into heat for living space, something that is “readily achievable,” by modern condensing furnaces, the ...

The proposed rule would effectively phase out less-efficient “non-condensing” furnaces, which waste excess gas, and make newer ... domestic manufacturing of heat pumps, among other things ...