Bad Home Air Circulation

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Old 12-16-14, 02:12 PM
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Question Bad Home Air Circulation

HOME LAYOUT

I own a 1-story condo that has:

- Room 1: Kitchen + Living + Dining
- Room 2: Small Laundry Room
- Room 3: Guest Bedroom
- Room 4: Guest Bathroom
- Room 5: Master Bedroom
- Room 6: Master Bathroom

ISSUE

To simplify the issue at hand, the room temperatures in the above rooms vary significantly, however we are primarily concerned with Room 5 (Master Bedroom). I live in Denver, CO and in the winter it gets bitterly cold. I set the thermostat to 73 degrees and almost all rooms heat to 73, however Room 5 (Master Bedroom) never heats higher than 66.

WHAT I'VE TRIED

- Attempt 1: The vent in Room 5 (Master Bedroom) was originally aimed at the window. I turned that around and it helped about 1 degree bringing it to 66 degrees.
- Attempt 2: I closed every single vent in the condo except for the one in Room 5. Did nothing.

Every morning I am currently waking up to it being 64 degrees and both Attempts are still in place. Anyone have any ideas?
 
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Old 12-16-14, 02:41 PM
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Hi Adam, some questions first.

1. Is there a basement or attic?
2. Condo, so I assume you share a wall or two, which ones?
3. You gave us a list of rooms, but no layout?
4. I assume forced hot air heat, is there a return in the cold bedroom?
5. Is the cold bedroom the farthest from the furnace.
6. How old is this building?

Bud
 
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Old 12-16-14, 02:47 PM
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ANSWERS:

1. Is there a basement or attic?
- I am on floor 2 of 3 floors with no basement or attic in the building.
2. Condo, so I assume you share a wall or two, which ones?
- A wall is shared in the Guest Room...the master bedroom wall is in the corner of the building.
3. You gave us a list of rooms, but no layout?
- Layout goes roughly from left to right, Guest Room, then Living Room, then Master Bedroom.
4. I assume forced hot air heat, is there a return in the cold bedroom?
- No return in the Master Bedroom...the return is between the Guest Room and the Living Room.
5. Is the cold bedroom the farthest from the furnace.
- The furnace is between the Guest Room and Living Room so it is the furthest.
6. How old is this building?
- Relatively new building...built in 2009.
 
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Old 12-16-14, 02:58 PM
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Have you tried leaving that bedroom door open?
How is the air flow, feel as strong as the other rooms?

We first need to decide if this is due to excess heat loss in that room or insufficient delivery. With occupied spaces above and below, heat loss should be greatly reduced.

Have you checked the air filter?

Note, not good to close too many vents as the heating system need a reasonable air flow to keep it from overheating.

Bud
 
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Old 12-16-14, 03:05 PM
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I'll leave the door open periodically as it helps a degree or two, but always leaving it open isn't an option since I have guests here and there.

Air flow feels a bit weak going into that room, definitely not as strong as the main room.

Air filter was changed about 2 months ago, so should be ok.

I may actually have to call someone to check it out as I can't figure this out.
 
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Old 12-16-14, 05:38 PM
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Being in a condo makes it difficult as we cannot check insulation or air sealing above or below. Even running a blower door test to determine air leakage is a major issue requiring involvement from abb abutting properties.

For testing, you can also measure the air temperature at all supply and return vents. Everything open and after a couple of minutes so temps are stable.

Do you have air conditioning built into that system? An ac unit can become obstructed.

When was your last furnace cleaning?

Bud
 
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