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#1 |
Journeyman EcoRenovator
Join Date: Jul 2014
Location: Austin, TX
Posts: 314
Thanks: 39
Thanked 50 Times in 45 Posts
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![]() Doing my taxes i stubled upon a tax credit i hadnt heard of before. Its for $50 for qualifying furnace. The advanced main air circulation fan motor, cannot use more than 2% of total energy of the furnace. Its a very gray area and i haven't found any details from any of the manufacturers web sites. I assume it would need to be ecm, possibly x-13 to be that efficient. It makes me wonder if the draft inducer motor could really use the other 98% of total power used. Anyone have any luck?
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1.47 kw solar, R-40+ attic insulation, 4 layers radiant barrier, solar attic fan, solar mini pool pump |
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#2 |
Land owner
Join Date: Nov 2012
Location: NM
Posts: 1,026
Thanks: 12
Thanked 127 Times in 107 Posts
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![]() Sounds like a variable speed AC synchronous motor that only runs only as fast as you need to circulate the air.
Normally you have a 2 pole motor that kicks on and only runs full speed. The standard fractional horse power motors are pretty inefficient even if powered by a VFD. I made a post about finding a more efficient fan motor a few years ago on here but no one had anything helpful. |
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