Granite State Mechanical Services, LLC

Stellar! Fantastic team, quality products, great service, incredible communication! I sourced multiple HVAC contractors; GSMS had middle-of-the-road prices but delivered exceptional value. This is an easy recommendation and I would work with GSMS again in a heartbeat without considering anyone else. Someone taught the GSMS team well, and they seem to re-earn your business at every interaction. 10 out of 10!

As always, GSMS did a thorough job of making sure our heating system was ready for the winter. We always feel very comfortable and confident that Mark & his team will do a great job.

GSMS completed the work on time, for a fair price. Heating system was not designed correctly, GSMS modified the heating system to prevent freeze ups. I highly recommend them.

Great customer service, prompt communication, excellent business overall!

Adam did a great job installing a new kitchen faucet replacing a valve, and outdoor faucet. Professional and always leaves work area clean.

Mark and Zak replaced my rusted water heater - on a Saturday. Excellent! Answered my questions, polite, respectful. Highly recommend.

Mark and Zak always come through with a top notch install or repair. I highly recommend for any HVAC job you need done.

On time, professional and neat. Adam and Zak are great to work with! Highly recommend!

Excellent service from Jack today!!

Adam was very good at explaining the repairs to me regarding my air conditioning system. Reasonable prices and very responsive. Highly recommend.