Key HVAC Celebrates Silver Anniversary

“KEY HEATING & AIR CONDITIONING CELEBRATES SILVER ANNIVERSARY & NEW VP” New Hampshire family-owned & operated HVAC company celebrates several milestones in 2018. Twenty-five years in business, 1st year at expanded lakes region location and appointment of company vice-president. Key Heating & Air Conditioning has reached a milestone with its 25th year in business. Jon […]

Award-Winning Key HVAC Team

You want the most efficient heating and air conditioning systems for your home. That’s something our award-winning, family-owned company has been delivering to satisfied New England customers for 25 years. At Key Heating & Air Conditioning, our professional technicians provide you with the name brands you want and the customer service you expect _ all […]

25K for 25YRS! 2018 Canned Food Drive

We are celebrating our 25th year in business by collecting 25,000 cans and non perishable foods for our local NH food banks this summer! Help us help our community! Drop off locations in Exeter & Wolfeboro. Our techs will also be all over collecting at homes too! Call us today if you would like us […]

Geothermal Tax Credits Are Back!

Did you know the geothermal tax credits are back?! We are so excited. So here is the breakdown and the important dates you need to know if you are considering geothermal for your home or business. Geothermal Heat Pumps 30% for systems placed in service by 12/31/2019 26% for systems placed in service after 12/31/2019 […]

Sit Back & Relax….and stay cool.

Summer is not over yet! Enhance the safety, efficiency and life of your residential heating and cooling systems.  How can we do that? Key Heating & Air Conditioning’s Safety & Efficiency Memberships are the way we do that.  Each year your membership renews you are ensured that your system is taken care of by factory […]

Home Energy Cost-Savings Open House in WolfeboroNH

You’re invited to attend Key Heating And Air Conditioning’s Open House at our new location in beautiful Wolfeboro, NH. Please join us on May 6th for hors d’oeuvres and refreshments. Our team of home comfort experts will give you a complete overview of our 0% Interest Financing options and affordable energy efficient and cost saving […]


Starting April 17 to June 9th, 2017 you can take advantage of taking up to $400 OFF your new Mitsubishi Cooling & Heating System! As an added Bonus: If you are a Maine resident you could couple this with a $500 Cash Back rebate from Efficiency Maine. Mass Residents see $300 in Cash Rebates as […]

12 Year Warranty with Key!

As an ELITE DIAMOND CONTRACTOR your new Mitsubishi System will be registered by Key Heating & Air Conditioning covering you for 12 years! Don’t have just anyone install a new Mitsubishi System for you.  Trust a certified Mitsubishi Contractor for your Mini-Split installation. Consumer Warranty Levels 5   YEAR WARRANTYAll products, regardless of registration,receive a 5 […]