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Severe negative pressure after installing new windows

Hi Everyone,

I recently had new windows installed and now when I turn on the AC/Heat I experience severe negative air pressure (clogged ears, migraines, pressure in chest). It's probalby because the condo is air tight. I can't sleep and feel like a walking zombie. 

How can I equalize the pressure? 

Thank you so much for your help!

ordjen
Re: Severe negative pressure after installing new windows

 I am not sure what you mean by "negative air pressure"? New windows are not going to affect the air pressure in your house. If they are now very tight fitting, you may be experiencing more stale air in your house. The average house leaks like a sieve and the furnace expells most of it up the chimney,. unless you have a high effiviciency furnace which uses outside air for combustion. A conventional furnace is burning household air and sending it up the chimney. Old leaking windows could have been a source for this air and now it is not letting air in as freely as before.

If this is happening, you either find a way to let more air into the house, such as cracking a window, or, have a mechanical air exchanger installed. It is somewhat analygous to what happens in summer when the A/C is running day after day and the house starts to smell less than fresh. Unlike the furnace, the central A/C does not exchange the air. My wife would make me crack open a window at this point.

Re: Severe negative pressure after installing new windows

Hi ordjen,

Thank you for responding. I had new windows installed and now I experience negative air pressure whenever I turn on the AC/Heat (clogged ears, migraines, pressure in chest). I am assuming this is because the condo is air tight. 

Hope that clarifies!

ordjen
Re: Severe negative pressure after installing new windows

Viper,

If the air tightness is actually causing your discomfort, simply cracking a window open a bit will determine if this is really the cause. If it turns out to be, you eithe have to permanently let fresh air in via a cracked open window, etc. or get an air exchanger to get rid of the stagnant air. It is kind of ironical, you buy new windows for energy efficiency, and then discover it creates air purity problems!  It is one of the reasons I have avoided the new super efficient furnaces. They don't burn household air, and the result is that the air quality actually goes downhill. So, you open a window a bit to let fresh air in, and the efficiency goes out the window, so to speak. Kind of a Catch 22.

JLMCDANIEL
Re: Severe negative pressure after installing new windows

I'm guessing you are getting the negative pressure with the heat not the AC. You could install a vent pipe to feed combustion air to the furnace.

Re: Severe negative pressure after installing new windows
JLMCDANIEL wrote:

I'm guessing you are getting the negative pressure with the heat not the AC. You could install a vent pipe to feed combustion air to the furnace.

I live in a condo. Will this require drilling through the roof? 

FRANCO
Re: Severe negative pressure after installing new windows

New windows are not going to affect the air 

pressure in your house. Maybe is another problem that you can not identify.

Maybe you need to check the air conditioner.

https://www.cooling-heating.org/

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