Quote:
Originally Posted by Paulbstockton6@hotmail.co
Could you post a picture of the furnace spec plate?
|
Quote:
|
ECM motors (variable speed) can be installed... (google time)....part costs less than $300.
|
I'm very interested in this aspect. Would be sweet if it varies automatically based on air temperature of the supply side. Move just the amount of air required to keep that temperature well within spec.
Quote:
Assumption...not enough return air. Could you provide:
1. Measurements of both return ducts (ie: 16" or 20x25")
|
Both ducts are pictured above. The round return (upstairs ceiling) is 12" diameter and the square one (downstairs on the floor) is 17x20". Both grills and filters are 17x20"
Quote:
|
3. Roof insulation depth or R-value. ( mine was R19; 8 inches fiberglass, I went balls out and it is now R70,;24-30" )
|
I needed to get in the attic for another reason, so I took a peek. The label says R38, but looking at the inches of depth it looks closer to R30. Maybe it compresses after 20 years?
Quote:
|
4. Type of attic vent, est size of vent, soffit ( opinion as to whether attic ventilation can be improved?)
|
21x Standard 50in/sq vents. Knuckleheads added 3 more after I pointed out intake ventilation was inadequate.
Soffit vents are a joke. 2" round things with screens that have UPC tags on them covering half the intake. There are 2 of them spaced every 3' around the house.
Quote:
|
5. Opinion on noise level from air rushing into return grilles. ( too noisy? )
|
Audible, but not loud.