Regional · Nashua, NHRegional · 20 Trafalgar Sq Suite 109, Nashua, NH 03063
Verified record
Winchester Mechanical is a Nashua, New Hampshire HVAC contractor that works in both Massachusetts and New Hampshire. Its BBB listing covers heating and air conditioning installation and repair, custom ductwork, geothermal including residential geothermal, indoor air quality, design-build and commercial HVAC installation, and its Procore profile shows 111 projects. The company's Massachusetts sheet metal licence is active on the state registry. Its New Hampshire licence, MBE1500883, is expired on the New Hampshire registry. BuildZoom also lists a Massachusetts master pipefitter licence, PM-028472, and shows 44 building permits. The BBB gives the company an A+ grade and lists it as accredited.
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No changes recorded yet — last scanned Sep 8, 2026.
Typical New Hampshire range for this kind of work, from regional averages — not a quote from WINCHESTER MECHANICAL. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$4,700 – $10,700
Typical HVAC project around $7,700
Neat installations5.0
Heating upgrades5.0
Same-day or next-day fixes for AC and hot-water failures4.8
A two-day boiler install4.7
Same-day repairs4.1
Active NH license2.5
Careful window replacement3.6
Service visits in Spanish4.1
