Furnace In Attic Or Crawl Space

If you have a standard efficiency 80 furnace it needs to be in a vented space for proper combustion.

Furnace in attic or crawl space.

Rarely will a sealed foam insulated attic deviate more than 15 degrees from the living space temperatures below it. Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts. Attic hvac systems save space. If the crawl space does not have proper ventilation radon concentrates in the trapped air inside the crawl space.

My contractor suggested putting the furnace in the attic. Doesn t it need combustion air. The university of maine recommends proper venting of a crawl space to prevent radon gas buildup. Upgrade to a high efficiency furnace.

Most of the issues that furnace might experience in an attic are due to extremely cold weather in this poorly insulated space. Well mainly it s a way to save space. Compare that with the daily 140 degree temperatures found in vented attics. An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan.

So when we have a choice we prefer hvac systems located under the house. We are remodeling a 1950s home with a beast of a furnace in the basement crawlspace area pretty good space down there the home is about 3300 sq feet in northern california we dont get super cold here sometimes some frost on the roof lawn but that s about it. You might not receive the same air movement benefits if the unit is in a garage either. Furnaces should be installed in your basement or a mechanical room near the center of your house not in a vented attic vented crawl space or garage.

A furnace can suffer from a drop in energy efficiency if it s in an unconditioned space such as an attic. In flood prone areas instaling a furnace in the attic provides protection. The current ductwork is in the crawlspace and we are replacing it all. The hvac s air pickup is in the crawl space and it spreads the radon laden air into the house.

A furnace in the attic is a design that works for all homes. What can you do if you want to encapsulate. High efficiency furnaces aren t usually recommended for an attic. So why put an hvac system up in the attic at all.

Don t put your furnace in the attic. Things seemed to be fine until we had a sustained cold and windy period. There are two options. What about my furnace.

Even when furnaces are put on the main floor floodwaters often overrun the first floor causing severe damage to the unit. Just installing the furnace in the attic crawl way of a single story home gives protection from most flooding.