Builder Sprayed Insulation All Over Furnace In Attic

If you don t have a crawl space or a basement then it can be a challenge to place a furnace on the ground floor of the structure.

Builder sprayed insulation all over furnace in attic.

She asked me to go into the attic to find the roof leaks or where the snow is blowing in through the soffits. Yesterday i was at a home we completed unfortunately i was only the ac contractor on this home over a year ago. Unvented attic sealed furnace and gas water heater. Of course spray foam is very expensive so i am not sure i want to spring for it in the larger attic which could be addressed with traditional insulation.

I found instead a vintage 3 ton ac unit with 1 rigid insulation taped all over it and insulated flex duct snaking all over the poorly insulated attic. We mean that literally by the way. A furnace can suffer from a drop in energy efficiency if it s in an unconditioned space such as an attic. If we insulate to r60 that attic is going to be mighty cold in the in winter and hot in the summer.

High efficiency furnaces aren t usually recommended for an attic. A furnace in the attic is a design that works for all homes. The good news is that some installers understand this problem and seek to address. Attics with spray foam insulation are so cool.

A while back i wrote about the incompatibility of putting an atmospheric combustion furnace in a sealed attic. The concern with a furnace in an unvented attic is to be sure there is enough combustion air so the furnace has adequate air for combustion and drafts properly. You might not receive the same air movement benefits if the unit is in a garage either. Earlier this year i got a question about a home that had spray foam insulation in the attic.

The rigid insulation was saturated from condensation. In cases where there has been a furnace in the attic i have put a grill in the pull down stairs to insure there is enough air getting into the house. Sprayed foam insulation ac loads calculated by energywisestructures. Actually has better than 15 months of operation.

Nothing unusual about that. Most of the issues that furnace might experience in an attic are due to extremely cold weather in this poorly insulated space. Should i worry about the furnace in the attic. A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents.