Natural gas furnaces are the most common space heating equipment in the U.S. residential and commercial building markets. However, current residential natural gas condensing furnaces generate ...

However, most U.S. homes still use noncondensing units with an annual fuel utilization efficiency (AFUE) of ~80%, rather than efficient condensing furnaces. This is due to the high cost of condensing ...

An indoor unit houses more condensing coils and another fan ... ones have flues to exhaust combustion gases. High-efficiency gas furnaces don’t need flues. They recycle combustion gases to ...

Could it become an attractive alternative to the currently popular heat pumps? Although gas furnaces and condensing boilers are considered low-emission devices, it's critical to remember that they ...

Under the policy, new non-condensing, natural gas-fired water heaters will be prohibited for sale starting in 2029 due to concerns about carbon-dioxide emissions. The policy comes during ...