mrvette
Phantom of the Opera
1600' Florida slab house, air handler at one end of house in garage, close to the outdoor heat pump....it's a white/gray shingle roof, a damn mansard too boot, one valley into the garage, and a nearly flat 300' addition out back.....
the present HVAC ducts are mainly stock from '72, insulated running through the attic, drops into the bedrooms, and two 6" lines into the additon out back on other end of the house....
sunny day today, fairly dry....90f easy outside....2pm....
so the temp , with BLOWER ONLY, no a/c is running for a test... the temp is 85f at the stack.....
in the back bedroom it's 92f at the end of the main run from the older stock setup.....
so a 7 degree increase in air temp.....
I figger it'a more for the room additon....
so, I looking at the layout of the house, and it would be fairly simple to run the ducts UNDER the ceiling, over the front door/windows/bedrooms, along the end wall, or even down the center of the nexus of the hall bath and the 3 bedrooms....
the basic question is.....since with a 7 degree increase in air temps, when the discharge air drops to say 65F when that a/c is on, then it's some 80f in the back bedroom.....
what could reasonable be expected savings as a % of operating costs??? figger 10-12F temp rise always fighting on the supply side....??
IF the ducts were run in a soffit UNDER the attic where the rooms are already cool, the savings would be great, I would assume.....ti's a fairly easy do job....take me about a week or so....materials maybe 150 bux.....
anyone???:bonkers::flash:
the present HVAC ducts are mainly stock from '72, insulated running through the attic, drops into the bedrooms, and two 6" lines into the additon out back on other end of the house....
sunny day today, fairly dry....90f easy outside....2pm....
so the temp , with BLOWER ONLY, no a/c is running for a test... the temp is 85f at the stack.....
in the back bedroom it's 92f at the end of the main run from the older stock setup.....
so a 7 degree increase in air temp.....
I figger it'a more for the room additon....
so, I looking at the layout of the house, and it would be fairly simple to run the ducts UNDER the ceiling, over the front door/windows/bedrooms, along the end wall, or even down the center of the nexus of the hall bath and the 3 bedrooms....
the basic question is.....since with a 7 degree increase in air temps, when the discharge air drops to say 65F when that a/c is on, then it's some 80f in the back bedroom.....
what could reasonable be expected savings as a % of operating costs??? figger 10-12F temp rise always fighting on the supply side....??
IF the ducts were run in a soffit UNDER the attic where the rooms are already cool, the savings would be great, I would assume.....ti's a fairly easy do job....take me about a week or so....materials maybe 150 bux.....
anyone???:bonkers::flash:
