1. Cornerstone IAQ Services

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Derry, NH

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Cornerstone IAQ Services

4.0 (4 reviews)
Closed • 8:00 am - 5:00 pm

Services - Cornerstone IAQ Services

Air duct cleaning

Carpet cleaning

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8 years ago

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Michael N.

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5 months ago

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8 years ago

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Georges Heating and Cooling - Mini-split

Georges Heating and Cooling

(12 reviews)

Wil came out to look at a steam boiler replacement for me, was very pleasant, helpful and gave me a…read morevery reasonable quote. I ultimately didn't end up going with him, but only because I found a slightly lower price elsewhere for a replacement boiler of the same manufacturer that I'm used to.

they are super nice until something goes wrong. I needed an oil tank replaced that somehow turned…read moreinto a whole heating system replacement. months later still no new oil tank and the heating system doesn't work. whatever you do, don't sign a certificate of completion to get financing. Do not trust this company. Not BBB members and therefore leave complaints unanswered. Update, since this review Wil has been addressing my concerns in a timely manner. I will update further when project is finally completed ****** another update, installer came to address oil leak and wiring. Still no heat, still leaking. Having another come to see if it can be fixed or if I need a whole new boiler. What kind of business installs a new boiler and leaves without testing it? A shady one. ********* final update. Patriot Heating and Cooling gave me an emergency service call and the boiler was still leaking oil. They fixed the oil leak ( something George's had addressed twice with no fix). The technician noted that the installer used as many old parts from the old boiler (saving them money) but parts that are from the old unit are more likely to fail. Patriot Heating and Cooling to the rescue. The whole job was subcontracted out, I got what George's paid for and definitely not what I paid for. Old parts, leaking oil, wired wrong, and with cash out of my pocket to fix ALL the issues after diagnostic testing........ I finally have reliable, not leaking, works like intended HEAT for the winter.

Cornerstone IAQ Services - airductcleaning - Updated November 2026

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