I have a central heating and air conditioning system in my home. I
bought a digital temp probe, the ones where there is an external
transmitter. This way I can monitor what the temp is in the living
room and compare it to my bedroom.
The living room is on average 73.5F and my bedroom is on average
What is there this much difference? I've already called HVAC tech out
and he had no answers.
My one room is 6F hotter than the rest of the house.
I've tried several things such as.
1. Leaving the door wide open for ours, no change
2. Putting a fan to suck air from my vent to reach the other side of
the room, no change.
3. Cutting off the computer for 7 hours, no change
Can someone tell me of a way to fix this problem?
sweaty and desperate
Your repairman can`t figure it out? You need a real repair tech if you
want to diagnose and fix it right, most likely you need to upgrade
ductwork to the room, you can do other things that might help, if the
run is long and airflow poor put in an inline blower, or cut down other
rooms vents, but you should know the temp at the coil so the coil does
Is the bedroom upstairs and the living room downstairs?
If so, a simple *fix* is to block the return vents downstairs. $4.18
fixed the 'upstairs to hot' in my colonial home. I put those magnetic
register covers on the downstairs return vents. This forces the system
to pull most of the air from the hotter upstairs. A thread a week or
so ago explained that it is not a good idea to block the supply
registers because of the slight possibility of freezing the coil.
Even if you have a single story home blocking the return in the living
room may help the problem if all of your supply registers are working.
It's a one story home, 1500 sq ft
So you're saying shut off the vents in areas BEYOND my registers?
BTW, My room is the 1st place the air goes which is why nothing makes
sense to me.
So should I try the block off vent deal?
How long before I know it's having an effect?
I would only suggest you try blocking off the *return* vents in the
room(s) that are coolest. This would be to force the system to pull
the air out of the hotter rooms. If your system only has one return
vent, like in a hallway, this would not be an option to try.
You should notice a difference in a few hours if it is going to work.
Your answer is a new HVAC tech. The one you had ... Well let's say he
may need a refresher course.
There are three possibilities.
1. Insufficient cool air getting to your room.
Check the inflow (volume and temperature) and the return air.
Could there be a problem with the duct work or maybe leaking due to bad
joints or whatever. Lack of proper air return is also an issue, do you get
more cool air coming in if you open the door to the room?
2. Air coming in not cool enough.
Maybe a duct going through an attic with insufficient
3. Too much heat load.
Could the room have windows getting a lot of sun, poor
insulation, or over a garage etc.
On 22 Jun 2006 09:14:06 -0700, email@example.com wrote:
And if you leave the fan on all the time, the outside air isn't cool
during the day. You're right, Scott must mean something else.
!!! He's talking about the furnace fan. And the switch he refers to
is the central thermostat.
As someone else asked, is this an upstairs bedroom? Where is it in
relation to the duct runs? An upstairs room at the far end of the
ducting run is worse case. It's not unusual to see systems installed
with inadequate ducting to the far end. And if it's upstairs and the
handler is in the basement, that can be a real bitch to try to run
additional ducting to.
Make sure all the dampers in the path to that room are wide open.
Also, if a register on the same path serves another room, say
downstairs that is cool enough, closing the downstairs register will
force more cool air to go to the upstairs one. In the winter, you'd
want to reverse that, or leave both open.
The inline blowers that someone mentioned are available at the home
center stores. I installed one in a similar situation and it made a
noticeable improvement, though it didn't entirely solve it. I also
increase the venting in my attic, which helped.
They also have booster blowers that just sit over the register and get
plugged into an outlet. Never tried one of those, but it's easy to try
and you can take it back if it doesn;t work well.
I'd also check if there is a return in the room in question. If not
and one can be added that will help. If you try the advice of closing
off returns in some of the cold areas, you want to be sure there is
adequate return space somewhere else. Otherwise you will be affecting
the efficiency of the whole system.
In some cases, from a practical standpoint, the best solution might be
a small window unit to take care of that room.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.