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What is code for air conditioning a garage?
Monday, July 27, 2020
Any heating/air conditioning ducts that serve the residence cannot also have registers (vents) in an attached garage. The registers would provide a direct route for a fire to move from garage to house. A separate HVAC system that serves only the garage is acceptable.
This is part of multiple requirements for “Dwelling-Garage Separation” for an attached garage in the International Residential Code (IRC) and the Residential Edition of the Florida Building Code (FBC). While not called a “fire rating,” the specs are intended to create a fire barrier to reduce the spread of a fire from an attached garage to the living area of a home. For more details, see our blog post Why can't I use my home's central air conditioning system to cool the garage? And to learn about the other garage fire separation requirements, go to What are the code requirements for fire separation between an attached garage and the house?
Here’s links to a collection of some of our other blog posts about GARAGES AND CARPORTS:
• What are the common problems when a homeowner converts a garage to conditioned living space, such as a family room?
• What are the code requirements for fire separation between an attached garage and the house?
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