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Mountain Air Systems describes itself on its website as specializing in HVAC and custom mechanical systems design and installation, backed by a Preventative Maintenance Agreement, and says it has been in business 41 years. A cnbc.com article has described it as a family HVAC business serving customers in Burlington, Vermont. In a 2025 r/burlington thread, a commenter suggested Mountain Air Systems as an option.
“Could try mountain air systems too”
“In 1991, Liam O'Farrell, a mechanical engineer, bought his family's HVAC business — Mountain Air Systems — from his parents and continued to service customers in Burlington, Vermont.”
“The preliminary investigation shows Joshua Clark, 22, misappropriated nearly $3,000 from Mountain Air Systems Inc. in recent weeks, Williston Officer Joshua Moore said.”
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1 change recorded — last scanned Oct 25, 2026.
Typical your area range for this kind of work, from regional averages — not a quote from Mountain Air Systems. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 – $11,400
Typical HVAC project around $8,200
State-verified plumbing license2.7
