Heat and air cond problems split slit level home
(winter u-level get all the heat, summer l-level get all the air condition)
The given is the my heating unit can only produces 100%
Then if I set up the (5)braces at the plenum as follows:
A) Only requires heat for 242 sq feet set the damper at 16%
B) Only requires heat for 115 sq feet set the damper at 08%
C) Only requires heat for 300 sq feet set the damper at 20%
D) Only requires heat for 196 sq feet set the damper at 10%
E) Only requires heat for 589 sq feet set the damper at 40%

Question (2)
Duct Booster fans
Given my duct runs (might) be to long for the blower would you
recommend the installing Duct Booster fans (at the registers)?

Details of my home
1. My home is (35 + years old), in Atlanta Georgia, facing west,
2/4 framing, half brick half cedar siding
2. I have a 4 bedroom split level home approx 1900 sq. feet with
8 feet conventional ceilings
2a. Overall upper level 38/24 feet 912 sq feet
2b. Overall lower level 24/28 feet 672 sq feet
2c. Lower level family room 26/12 312 sq feet
2d. Overall House is 2,184,160 cu inches
3. The lowest level (family room) is carpet over a slab of
4. Windows as follows:
4a. Upper level 10 single pane double hung with storms
4b. Lower level 3 picture windows without storms
4b1 5 double hung with storms
4b2. One double pane slider
5. I have added more insulation in the attic
6. I had a problem with the original horizontal (gas) unit
(parts were no longer available) so I was replaced the unit with
a new vertical unit and had it installed in my (closed up,
partially finished) garage.
Note: when asked what size unit I wanted, I thought a new unit
would be more efficient than my current unit. Thinking the cost
of the new unit would reduce in my heating cost. I compares
utility bills from the old and new, using only the BTU usage
taking into consideration the HEAT DAYS published by NOAA, for
three years. BOY WAS I WRONG
6a. The new unit installed its also (gas) same as original
6b. The new unit is a Comfortmaker (Deluxe two stage gas
furnace) with a AFUE of 80
6c. The plenum has 5 branches as follows:
A). 242 sq feet (u-level bedrm #1 and u-level small bath room)
B). 115 sq feet (u-level bedrm #2)
C). 300 sq feet (u-level bedrm #3 and l-level family room)
D). 196 sq feet (u-level bedrm #4 and u-level hall bathrm
E). 589 sq feet (l-level living, dinning and family rooms)
6d. 464 sq feet for Miscellaneous halls, foyer, closets plus I
eliminated a duct to the kitchen