Minimum Clearance For Furnace Attic

On 2019 07 27 by bill.

Minimum clearance for furnace attic.

2015 irc m1305 recommends that the furnace have a level working space of at least 30 inches by 30 inches in the front of the appliance. See direct vents side wall vents for a complete table of recommended clearance distances from a direct vent gas appliance terminal to other building. Attic access may be reduced to 22 x 30 provided the largest piece of equipment can be removed through the opening. So why put an hvac system up in the attic at all.

American gas association has certified the design of condensing furnaces for a minimum of 0 clearance from combustible materials with a single wall plastic vent pipe. Well mainly it s a way to save space. Passageway if headroom is less than 6 ft attic furnace minimum 30 in deep and wide in front of furnace access by an opening as large as the largest piece of furnace and in no case less than 22 in by 30 in located in a hallway. Our houses are fairly close together and i measured 9 1 2 between my proposed sidewall vent position and our neighbor s home.

Minimum opening size the 2012 international residential code requires an attic access opening for attics with an area greater than 30 square feet and a vertical height in excess of 30 inches. On 2019 07 27 by mod gas meter clearance to weber grill. What is the minimum clearance from a sidewall direct vent to a neighboring home. This 20 limitation applies to the minimum 30 height only low clearance attics.

An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan. An attic in which a fau is installed shall be accessible by an opening and passageway 30 x 30 in size. Attic hvac systems save space. The cost profile for a furnace in the attic is competitive.

Install passageway platform minimum 24 inches width and maximum 20 feet in length to fau. If there are no obstructions on the passageway to the attic furnace and it has a minimum 6 feet 1829 mm height and 22 inches 559 mm width along its entire run the walkway length limit goes up to 50 feet 15250 mm in irc international residential code and has no limit in umc universal mechanical code. All other clearances are fine. Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts.

Minimum clearances from combustibles shall comply with the listing of the appliance.