Multi stage and modulating gas valves.
Top energy efficient furnaces.
The 5 best furnaces of 2020.
The r98v s value comes from a modulating design and a variable speed blower.
Up to 97 3 afue energy star certified and state of the art modulating valves which increases efficiency even more.
The airease pro series a97mv furnace advance.
The prestige series r98v rheem s most efficient gas furnace has an afue rating of up to 98 7 percent making it the most efficient model we came across during our research.
The armstrong air pro series a97mv furnace.
Dual chamber heat exchangers.
The better business bureau has given trane a b rating and its customers have reviewed how truly efficient this furnace is.
If you re looking for the most energy efficient furnace on the market we think trane is your best bet.
Bryant gas furnaces are capable of very high afue ratings of up to 90 or more.
Armstrong air a97usmv series with comfort sync communicating thermostat.
Variable speed blowers ecm blowers.
Rheem prestige r97v.
High efficiency furnace buying guide.
Standard efficiency furnaces use a single tubular or ribbon style heat exchanger.
Energy star most efficient 2020 furnaces airease a97usmv series with comfort sync communicating thermostat.
High efficiency models use a multi.
Its top of the line models are as good as it gets.