Verified record
Zajac HVAC is accredited by the Better Business Bureau, where it carries an A+ grade. Its BBB listing names the heating and cooling work it offers: air conditioning and heating installation, ductless split systems, air handlers, gas piping, hot water services, zoning systems and oil tank replacement.
“Zajac HVAC is about as anti-MAGA as you can get.”
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1 change recorded — last scanned Oct 21, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Zajac HVAC. 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
Same-day and weekend calls for burst pipes and lost heat5.0
Broad plumbing and HVAC range5.0
Repeat, years-long customers5.0
Water heater and boiler installs5.0
