I have a Goodman furnace(GDS80453ANA) in my rental house (6 yrs old). It runs great and has for the 6 yrs. PROBLEM: My house is 900 sqft and has 6 registers. The air coming out of each register is superb, BUT, its only luke warm. ALSO, the furnace runs all the time. I'm guessing it might be the fan/blower motor is too fast. Any ideas how to get more heat in the house?

Hi activekcc, since your fan is running all the time I would lean more to the fan control limit, that should turn your fan on around 190 degrees and off around 140, here's a link to what your part may look like

60T | National Furnace Parts

You can check it with a volt/ohm meter if you have one. Good luck

I just want to slow the fan speed down because its too powerful and is putting out too much air, thus the luke warm heat coming out.

It doesn't run all the time. THe heater/furnace turns on and runs about 10 min then turns off, then turns on about 15 min later and runs for approx 10 min then turns off.

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Originally Posted by parttime

Hi activekcc, since your fan is running all the time I would lean more to the fan control limit, that should turn your fan on around 190 degrees and off around 140, here's a link to what your part may look like

60T | National Furnace Parts

you can check it with a volt/ohm meter if you have one. good luck

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Hi again activekcc, I'm not sure that slowing down the fan would not damage your heat exchanger, your furnace is designed to move a certain amount of air. You might check the duct work and add insulation and seal any cracks. A HVAC tech would have equipment to check air flow. Good luck

You can change the speed from medium to low and make sure the t-stat fan switch is not set to "on."