Furnace In Crawl Space Or Attic

Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts.

Furnace in crawl space or attic.

Well mainly it s a way to save space. If the crawl space does not have proper ventilation radon concentrates in the trapped air inside the crawl space. Even when furnaces are put on the main floor floodwaters often overrun the first floor causing severe damage to the unit. That means having it placed in the attic or a crawl space is a bad idea because you are increasing the risk of causing.

Just installing the furnace in the attic crawl way of a single story home gives protection from most flooding. Compare that with the daily 140 degree temperatures found in vented attics. The university of maine recommends proper venting of a crawl space to prevent radon gas buildup. A horizontal furnace in a crawl space must also be elevated approximately 4 6 inches to allow clearance for the.

Condensate drain elevation space. During the fall we disconnected the old furnace and decided to install a new one in our attic space running new ductwork. Our house is a 2 story forced hot water system without ductwork. As a result their designated space for a furnace is often no longer a.

Attic hvac systems save space. In flood prone areas instaling a furnace in the attic provides protection. A furnace can suffer from a drop in energy efficiency if it s in an unconditioned space such as an attic. However not every home has a pre existing designated space for a system.

That moisture can freeze if it receives exposure to exceptionally cold temperatures. The hvac s air pickup is in the crawl space and it spreads the radon laden air into the house. Most homeowners should not place a condensing furnace in an unconditioned space because the unit will produce water as it heats the air. An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan.

Most of the issues that furnace might experience in an attic are due to extremely cold weather in this poorly insulated space. So when we have a choice we prefer hvac systems located under the house. A two room addition on the 1st floor has limited attic space and a 4 crawl space. So why put an hvac system up in the attic at all.

Rarely will a sealed foam insulated attic deviate more than 15 degrees from the living space temperatures below it. Things seemed to be fine until we had a sustained cold and windy period. In homes with limited space the furnace can be installed in the attic. The furnace may be placed horizontally in a crawl space on a pad or other noncombustible material which will raise the unit for sufficient protection from moisture.