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post addition. For those who would like a visual of what a butterfly valve is, when referring to my earlier post.
Mechanical Engineer here, ... essentially the same problem in my two story home. Typical complaint, hot upstairs during summer a/c use. .. overly hot downstairs during winter furnace use. Inefficient ducting is the cause in almost every case. Problem with my home is energy cost in both seasons, even with solar it has been $600 month during peak of both seasons.HVAC wanted $2500 to redo ducting, install baffles .. ect. Instead I purchased cheap 12v solenoids (2) , roll of HD doorbell wire, 2 position switch, 12v transformer and made "butterfly" valves. I installed them inline on the main ducting for upstairs, downstairs. Total project took 2 hours.Now, a simple throw of the switch ( mounted to thermostat ) either increases overall a/c output upstairs for summer, or switch lower position increases furnace output downstairs. Huge difference, monthly bills now sub $200 ( with solar ).Total project cost ... $85.00This ducting control is much more effective than trying to push or suck air out of vents with a fan. It's also more cost effective in the long run with comparable project costs. I'm actually surprised that you don't find these kits ready made at the big brick and mortar stores
I am also suffering from the same problem but due to my tight schedule i am not able to clean the dryer but with the help of your post I will be able to clean the dryer vent easily.http://www.climatecontrolinc.com/
I am also suffering from the same problem but due to my tight schedule i am not able to clean the dryer but with the help of your post I will be able to clean the dryer vent easily.
A/C Vent Booster Fan
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