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Old 12-05-2011, 12:11 PM
 
6 posts, read 10,086 times
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I have a hot air heating in my 3br townhouse. comes out strong in the living room area (1st floor) but weak in the 2nd and 3rd floor where the bedrooms are. bedrooms are always cold. anyway to either make the heat distribute more evenly or set a thermostat in each room? payin an arm and a leg for heat over here and would appreciate if it was more efficient.
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Old 12-05-2011, 12:48 PM
 
Location: The Triad (NC)
31,935 posts, read 73,469,488 times
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Quote:
Originally Posted by khydroxide View Post
I have a hot air heating in my 3br townhouse. comes out strong in the living room area (1st floor) but weak in the 2nd and 3rd floor where the bedrooms are. bedrooms are always cold. anyway to either make the heat distribute more evenly or set a thermostat in each room? payin an arm and a leg for heat over here and would appreciate if it was more efficient.
Take a good look at those register vent things the air comes out of.
Somewhere on them should be a lever sort of thing.
This controls the damper which allows basic adjustment of air flow.

There may also be something similar to this attached to the main duct work
(probably near the furnace).

some more stuff to look at:

Home Maintenance : How to Balance HVAC Air Flow - YouTube
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Old 12-05-2011, 12:53 PM
 
Location: Grosse Ile Michigan
29,598 posts, read 71,637,126 times
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You cannot just set a thermostat in each room. You would have to zone our entire system. With a single zone system. the thermostate turns nt eh whole system and heats the entire house when it detects temperatures cooler than the setting. If you added a bunch of thermostats, what woudl you connect them to?

You can zone your heating in multiple different ways. you can instal dampers in the ducting going to each zone so that the hot ait blows only into the particular rooms that are cold You then have to hook all of the thermostats up to the furnace and your furnace will run full on whenever any zone is cold. Since the ehating is limited by the size of the ducts, the rooms calling for heat will nto heat up much faster with some of the ducts closed off. It seems like this might be very inefficient. However I am not sure. I do not have much experience with zoned forced air systems.

Another way to zone forced air is to have two or more separate furnaces. This is what we had in our old house. One furnace it the crawlspace under the house heated (and the AC unit cooled) the first floor. Another separate furnace in the attic heated (and cooled) the upstairs. Each furnace had its own thermostat.

Either way is expensive to install. Two furnaces actually result in reduced utility costs, but the installation costs are nearly doubled.

Another way to get your system blanced is to manually close dampers or even close or block off the vents in the rooms that are getting too warm. This will force more of the heated air into the cold rooms and with some trial and error, you can eventually get your system balanced so that all the rooms are comfortable. This method is free, but it is harder and your balance will change with weather conditions and time of day.

(And before the drooling zombies who lurk around CD only in the hopes of boosting their egos by finding someone who made a mistake I am aware that is it technically not the furnace that cools during the summer, but it is not necessary to explain what a package unit is for the purposes of the OP question).
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Old 12-05-2011, 01:36 PM
 
28,461 posts, read 78,578,082 times
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Dampers, either at the ends of vent louvers or elsewhere in the ducts are generally pretty ineffective.

A booster is a much better option: Amazon.com: Tjernlund RB10 Duct Booster Register Booster Fan - 4 x 10 Inches: Home Improvement
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Old 12-05-2011, 02:52 PM
 
Location: Bend Or.
1,126 posts, read 2,710,067 times
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Quote:
Originally Posted by chet everett View Post
Dampers, either at the ends of vent louvers or elsewhere in the ducts are generally pretty ineffective.

A booster is a much better option: Amazon.com: Tjernlund RB10 Duct Booster Register Booster Fan - 4 x 10 Inches: Home Improvement
There are also boosters available that go into the ducts sometimes they are more easily installed near the furnace to boost pressure.
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