I have a problem with our 1964 gas forced air heated rambler. The
basement stays cooler than upstairs and have to have the heat set high
to get it warm. The basement is partially finished, insulation, paneling
and has 2 heat vents one towards each end of the ductwork that runs
along the ceiling. There is only one thermostat that is upstairs in the
living room. The furnace is newer. I would think that the heat is rising
upstairs alot. Any suggestions how to warm it up more with out having
the upstairs so hot? A ceiling fan? I have the heat vents downstairs
wide open and the upstairs some closed down more where it is too warm.
Still doesn't warm the downstairs enough. Thanks
To really answer your question you will need someone to come out and "do
the numbers" There are calculations and measurements needed to figure out
what needs to be done. It would be difficult to do over the internet. I
would guess the size and placement of air returns and supplies are a
problem, but just how to go about correcting that is best approached by on
site measurements and calculations.
My insulated basement is impossible to heat , when the sun comes out
,the furnace is off and it cools down. more vents will help and a
return. I am going the route of a seperate vented heater. then i
will heat it only when needed
On Sun, 19 Oct 2003 23:42:54 -0500 (CDT), firstname.lastname@example.org (t
A couple of questions:
Does it have any cold air returns at floor level?
Is there a closed door to keep warm air from rising upstairs?
Two vents, depending on the size of the basement, may not be enough.
Many newer, larger homes are using separate heating/cooling systems for 1st
& 2nd floors. Separate heat for basement may be the best answer. A cold air
return near the floor in basement may help. Our basement became noticeably
cooler when we installed new hi-efficiency furnace 3 years ago. The old
furnace drew combustion air near the floor thus taking out the coldest air,
new furnace draws combustion air from out side so cold air just lays there.
I added cold air return near floor, helps a lot but since basement is just
work shop now, don't need, or want, to be as warm as living space.
>The basement stays cooler than upstairs and have to have the heat set high
Isn't this simple physics? Heat rising, and all that? [A friend had a
similar problem with a new, less wasteful furnace -- she now has to
leave a light bulb on in her utility area to keep a water source from
freezing.] Depending on his uses, the OP might "decorate" with
heat-emitting appliances -- 'fridge, TV, computer, etc. And use
incandescent, not fluorescent lighting.
You have the right idea. Close upstairs registers and open downstairs
registers. It may be necessary to install more registers downstairs.
If there is a door between up and down, keep it closed.
Fabricate/install a cold air "trap" on the fresh/combustion air inlet to reduce
Close off unused and unfinished areas that do not require as much heat.
You need return air vents close to the floor downstairs to pull the cold air out.
Force the blower on to circulate the air between up and down.
It's most likely as you have surmised, with the thermostat on the 1st floor,
the temp in the basement isn't going to have much effect on it. Basement,
being below ground, will naturally be cool, and without a return air vent,
its probably not getting as much heat as you'd like since when the furnace
is on it has to 'push' the cold air up the stairs to the return.. You could
try adding a return air vent to assist some, but your best option may be to
add some supplemental heat. Electric baseboard heaters are probably your
best bet. Or a second small gas furnace with the stat located in the
I have a two story house with finished basement(has a gas FP) where
the thermostat is licated on the main floor(has a gas FP). Basement is
for hot/cold air. After trial and error I managed to balance air flow
throughout the house. all 3 level has pretty even temp. in
summer/winter. But until I have dampers installed in the air duct,
nothing much helped. Also I have dual speed fan which runs in low speed
all the time. When heat/cold air is called for, it goes into high speed.
I had the same setup at my house 18 years ago. I had a heating expert come out
and access the problem. I was renovating the basement at the time. All I had
was two ducts in the ceiling for heat and I had added a cold air return into
the existing cold air trunk ductthe first year I moved in. It helped a little
but not enough. What he had me do was cut a cold air return for the basement
right into the side of the furnace the same size as the upstairs return. My
furnace is right near the wall the the family room and I only needed about a
foot of 12X12 trunk to get to the wall where the cold air grill is. You also
need to install a filter in this duct. I found 12X 12 filters and fashioned my
own tracks for it to slide in and out of. For the outlets he had me add 4
registers from main trunk to 7 inches off the floor spaced somewhat evenly
around the room which is 24X20. I put a door in to seperate the upstairs from
the downstairs also. Now if I close the door to the upstairs it gets so darn
hot downstairs it will drive you out of there so we leave the door open. The
thermostat is on the 2nd floor like yours. Hope this helps,
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