I am very new to this world. After the furnace was installed, I felt very dry and very hot air. That is why I have started researching the problem and figured out that the dealer made a huge mistake. They lowered the speed of the blower to medium high; based on the product spec, it is still around 1200 cfm. YOu are right; the air is noisy, but only rooms that are close to the furnace noisy. So, is it okay? Or, will it damage the duct system eventually? Believe me, Georgia does not have a good building code, which encourages builders build houses so quickly. Most likely, the duct system is not that good. Our house is abou 2300 sq. It has an adequate insulation. When I ran a sizing estimator on the Internet, it showed between 70KBTU and 80KBTU. But the output of the furnaces I have are 80 percent of two 66KBTU, which is 105K. So, when the owner of the dealer comes out do the heat load calc, can it be like 105k at the highest? What variation can I expect? 800cfm blower is okay with 2ton heat pump? Any problem? They fooled me once. I don't want them to fool me again.

Hi All, Thanks for all your posts. Well, my wife called up the installer and had him install the higher performance model Goodman listed above. It is now installed, and it really puts out the heat. Of course, the GMH950703BXA has about 66% better heating capacity than the other model, so I guess it is not surprising that there would be a substantial difference. I have another question though; I went up into our attic to look at the AC wiring going into the unit and it appears there is no emergency power disconnect installed. Would you recommend that I get one installed? Apparently, the installer just grabbed some armored cable I had in my garage and ran that from the furnace, along the attic roof and into the ceiling--not sure where it goes from there. Also, it appears he didn't run a ground wire in there, just hot and cold wires. I suppose the unit gets its ground from some other pipe or something (gas pipe?), as the furnace is not supposed to run without a ground connected, according to the installation manual (which also says there is supposed to be an emergency disconnect, which I suppose the installer didn't read, or ignored). Thanks for any info you can give. Good nite, Mike

So far HVAC dual fuel system has been installed 32 hrs. And it has not run yet. Weather in Atlanta warm for Feb and at 70 degrees there is no need for heating or cooling. Right now I am just waiting to test it out ....one way or another. Installer called and said they would be happy to switch it out...or I can keep the heat pump that was erroneously installed. Klem1: the filters were 5 inch pleated ones almost identical to my Aprilaire ones but they said theirs were better. BTW....had just signed up for a 2 year contract for gas at 36 cents a therm. And now I have a heat pump....lol! I will most likely keep the pump....had always been interested in dual fuel......but past experiences with heat pumps kept popping up in my mind. Thanks Weedy, Tigerdunes, and Klem1 for your positive input re. the incorrect equipment that was installed. Pretty sure it will be a "keeper".

Check the NYSERDA program for rebates. Mini splits lines, drains and cables can be run in interior walls into the basement. 6 of mine are run in interior walls and one in an exterior wall. Just because HVAC is retrofitted into attics in the South and West does not mean that it is a good idea. Fur-downs or basement locations would be better. You want to keep ducts and the unit inside the house envelope if you can. Ducts leak. Outdoor supply ducts depressurize the house sucking in make-up air in random places. Outdoor return duct leaks pressurize the house blowing out air in random places. Duct leaks tend to cause random pressure differentials in different room, again, turning your HVAC blower into a power vent. I have experience living in CNY homes. I believe that many could easily be cooled with a nice combination of high wall units in bedrooms and minimally-ducted units for cooling the LR, kitchen and DR areas. If not possible for the latter, maybe ceiling cassettes or high wall units.