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Typical your area range for this kind of work, from regional averages — not a quote from Greenwich Heating & Cooling, LLC. 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
Greenwich Heating & Cooling says it is independently owned and operated by Frank R. Kasmarski, Jr., a lifelong Greenwich resident who started working in the trades at 16 and, after 17 years with another local HVAC company, started the business in 2017. Its website names Greenwich and Glenville as its service area. A 2026 customer with a service contract said that once on New Year’s Eve, with no heat, they came during their holiday party and fixed it. A 2026 customer whose home air conditioning stopped working said Frank and his team came out quickly, diagnosed the problem and got the AC back up and running. A 2026 customer who has had both boiler and AC emergencies said the company responded long before other companies and resolved the issues quickly. A 2026 customer said it fixed an HVAC problem that two other companies couldn’t figure out. A 2026 customer said Frank and his crew spread tarps all over and left the work area spotless. A 2026 customer said Frank and his staff installed a new furnace on one of the coldest days of that winter. A 2025 customer said Frank and his team stayed on a new installation with troubles that were hard to track, replacing every part until it was fixed. A 2022 customer said Frank offered same-day service on even the hottest days for an old air conditioner. A 2026 reviewer who gave four stars called the technician knowledgeable and the service fast but not cheap. A 2021 customer said a propane furnace showing an error 11 code still did so after almost 2 hours of work. It holds an active Connecticut S1 heating and cooling contractor licence, HTG.0409031-S1, under Greenwich Heating & Cooling LLC.
Always reliable and perform high-quality work.
I have service contract and I am very satisfied. Once on New Year’s Eve I had no heat. They came during their Holiday party and fixed it!
Practical, efficient, cost effective and prompt service with a gracious attitude. Truly top notch work!
Awesome service. Fixed an HVAC problem that two other companies couldn’t figure out.
Great service, quick response to my call
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1 change recorded — last scanned Oct 14, 2026.