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Rooftop HVAC Units and Roofing

Roof Online Staff

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Two small rooftop units on sleeper supports.

Two small rooftop units on sleeper supports.

A curb-mounted HVAC unit on a TPO roof.

A curb-mounted HVAC unit on a TPO roof.

Pictures of HVAC Units

Related Pages

1. General: “HVAC Integration Of The Building Envelope” is a introductory article focused on design considerations regarding the relationship between HVAC components and the roof system. It’s a well-sourced article with many useful links for further reading. Available on the Whole Building Design Guide website.   

2. General: “Heating, Ventilating, and Cooling Historic Buildings – Problems and Recommended Approaches” is a great article and also worth reading as a general introduction to HVAC systems. The article is from 1991 and available on the US National Park Service’s Technical Preservation Services website.

3. Building Codes:Duct Insulation and Sealing Requirements in Commercial Buildings” (from 2012) is a handy bulletin available on the US Department of Energy’s Building Energy Codes Program website. Includes exterior duct-work. Always verify which building code/energy code is in effect in your area.

4. Technical: “Guidelines for Roof Mounted Outdoor Air-Conditioner Installations” is available on the website of the Air-Conditioning, Heating, and Refrigeration Institute.

5. Technical: “Attachment of Rooftop Equipment in High-Wind Regions“is an informative little introductory article available at the FEMA website.

6. Technical:Can I Use a Curb Adapter?“ does a very good job of answering that question. Found on the website of T/E/S Engineering.