Finished Attic Hvac

Enforcement varies but codes typically say that at least half of a finished attic must be at least 7 feet high and that this area must be a minimum of 7 feet wide and 70 square feet.

Finished attic hvac.

Before you start the job however consider these five hvac tips to help you effectively turn your attic into a spare bedroom. Follow the rule of 7s. A contractor or a local building official can help you assess how the rule will apply to your attic and how modifications like dormers can resolve height shortcomings. If your home already has ducts running in the attic the simple solution is to keep using the old system to pump treated air into the newly finished attic room.

Building codes vary by location but most require at least a 7 foot clearance for attic expansions. This isolates the attic from the rest of the home which means the attic isn t part of the conditioned envelope. Sometimes the hvac system winds up in the attic because it s the last thing on the home designer s list. Every attic is different but a few established norms and practices will guide your renovation.

By the time the hvac unit gets planned putting it in the attic is the only thing that makes sense especially cost wise. In many homes the insulation layer in the attic is along the floor. If you don t have enough height you ll have to raise the roof line and that adds a lot to your construction costs. Consider whether the old system is powerful enough to cover new areas without losing efficiency though.

Increase or move insulation. That s measured after you finish the ceiling. To find the answer you can hire an inspector to inspect your hvac system. Attic ventilation systems also work together with your insulation.