Some high-efficiency furnaces have two heat exchangers—a main heat exchanger and a secondary heat exchanger that traps and reuses heat from combustion gasses that would otherwise go outside.

All fuel-burning furnaces have a primary heat exchanger. But high-efficiency gas furnaces also have a secondary one, which typically consists of an array of metal tubes. Hot air from the primary ...

Balance valves instead of thermal expansion valves in each case and cooler; • The only TXVs in the secondary system are for the plate-to-plate heat exchanger vs. 50 or more in a typical DX system; • ...

The company will provide a 20-year parts-and-labor warranty for the secondary heat exchanger. The enhancements respond to a recent class-action lawsuit by a small number of U.S. and Canadian consumers ...

This is one reason they have become so popular. The addition of a secondary heat exchanger to extract heat from exhaust is what makes that efficiency difference. Much colder than conventional ...

Johnathan C. Brewer II is a licensed general contractor specializing in kitchen, bath remodels and general construction with two decades of professional experience. He is also the owner of Brewer ...

TEi will develop detailed designs for key heat exchanger technology integral to the ODIN microreactor. This includes the eventual fabrication of both primary and secondary heat exchangers.

Selbyville, Delaware, Nov. 13, 2024 (GLOBE NEWSWIRE) -- The industrial heat exchanger market is predicted to cross USD 31.9 billion by 2032, as reported in a research study by Global Market ...

Tapping a new toolbox, engineers buck tradition in new high-performing heat exchanger Date: May 12, 2025 Source: University of Wisconsin-Madison Summary: A team engineers created a twisty high ...