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Supreme Air Systems is a Webster HVAC and plumbing business. By its own account it is a new division of a company with over 30 years behind it. Its website says it offers free estimates and 24/7 emergency service.
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1 change recorded — last scanned Sep 28, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Supreme 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
Transparent diagnostics5.0
Broad plumbing and HVAC range5.0
Repeat, years-long customers5.0
Water heater and boiler installs5.0
Two AC technicians out within a few hours5.0
