Friday 12 February 2021

Is my new Bryant 926T the correct size?

Just had a new Bryant 926T installed last week and I am concerned it may not be the correct size. A week later and I am finding that it is taking the furnace an hour to heat the house one degree.

Live in southwest Michigan. Outside Feb temp this year is around 20 degrees high / 8 degrees low.

Previously had a Whirlpool NUGK100DH01 where the heat exchanger plugged or went bad. Bad smell at the exhaust. Replaced with this Bryant. Had seven or eight quotes. Most arrived looked around and said, "eh you probably need an 80k BTU".

Large home improvement retailer's furnace division came out to bid. The salesman spent the most time calculating. He came in needing 114k BTU. This person took a lot of pictures and spent the most time in front of his tablet working on the calculation.

The next in line, as far as time consumed, is the company we bought the furnace from. This person spent the second most amount of time working up the estimate and did a great job of explaining. Initially, he said he would probably install an 80k but might go with a 60k. He explained oversizing / undesizing etc. Seemed to know the ductwork, current setup, etc, 35 years in the business. He walked around and checked electrical, AC, etc.

House is about 2700 square feet. Renovated in the 80s. Double pane windows (from '80s). Average insulation (from '80s). I would not say it is well insulated. Has a basement.

The previous furnace served us well until the exhaust smell, then a lower amount of heat due to the plugged exchanger.

Does this Bryant appear to be the correct ballpark size? undersized? Am I incorrect in thinking that the house should be heated in an hour or two vs six to eight?


source https://hvac-talk.com/vbb/showthread.php?2226576-Is-my-new-Bryant-926T-the-correct-size&goto=newpost

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