The heat exchanger is connected to a long duct running down the center of the attic from end to end.
Duct closure for attic air conditioner during winter.
When outside temperatures drop down below about 40 pretty much nov thru march condensation starts forming in the ducts and drips from some of the ceiling registers.
According to nrel researchers david roberts and jon winkler moving the ducts from a vented attic to a new location inside the conditioned space will reduce electricity used for cooling by 15 to 20 and will reduce the size of the needed air conditioning equipment by 0 5 to 1 ton.
Putting foam blocks in the register boots and return duct in the winter will likely stop the condensation altogether.
I lowered soffits around room perimeters.
It only seems logical that closing those same vents during the winter would help keep the warm air inside.
Then cooler air from outside sneaks in to replace it.
Keep air moving through the duct during the coldest weather.
The air is re introduced as icy drafts through lower vents.
That air has a dewpoint that is higher than the inside surface temperature of the ducts.
The vents allow the super heated air to flow out.
Winterizing your home saves money hot air produced by heating systems in fall winter lose thermal values of 30 or more through the central air duct system.
Iv conditioned attic and more.
Running the indoor blower on a fan cycler will help.
We would try the simple things first.
You don t close the ac vents in winter leave them open in summer or winter.
In the winter the attic is very cold because the roof and gables are not insulated.
Iii special trusses that create space below the unconditioned attic.
In that way it keeps your house cooler and your heating bills down.
Condensation problem in the ductwork in wintertime question i have a dedicated ductwork system with the air handler in unconditioned attic.
Ii lowered ceilings in hallways.
The hot or cool air is coming out from the same air ducts it depends on how high or low temperatures and the hot or cold switch lever that you set the central air condition unit will automatically switch to hot or cold as you have controlled it.
Make sure you.
Heated air rises and is drawn through unsealed central air conditioning vents into ductwork in the cold attic.
This will keep the surface of the duct above the dew point of the air in the home.
Insulating the april aire cabinet will help.
He also thought it might help to run the fan on the air conditioner to circulate air through the ducts and warm up the ductwork even in winter.
You can get the air handler and ducts into conditioned space in several ways without needing a basement or crawl space.