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 […]

What’s Hot Now? REBATES!!

Believe it or not but NOW is the best time to install air conditioning in your home or vacation home. You can take full advantage of the NH Saves Rebates! Receive thousands of dollars in AC equipment rebates and have everything up and running before the hot, humid summer days. “Why wait until the weather […]

Snow Melt & Radiant Heat For Your New Home!

Building a home? Consider adding a snow melt system in your driveway and walk ways to help with the shoveling & eliminate the need to hire a plow driver!  Radiant heat is another great option for adding heat to a basement slab making the space a viable option to finish for new homeowners.  Or, add to […]

Spread The Warmth Of Thanksgiving

Key wishes you a Thanksgiving overflowing with peace, love and laughter this Holiday Season. Schedule fast and convenient 24/7 maintenance with Key Heating and Air Conditioning. Call: 1.844.539.4822 or (844) Key-HVAC

The “Key” to Maintaining Your Heating and Cooling System

Regular annual maintenance is the key to your home heating and cooling system running most efficiently. To schedule an appointment for a cleaning, call our service department today at 603-436-8811 or 844-KEY-HVAC or email us at Want to learn more about Key Safety & Efficiency Membership Program w/ Available 24/7 HVAC System Monitoring which […]

High-performance Wall-mounted Heat Pump Systems

Slim, wall-mounted indoor units provide zone comfort control. INVERTER-driven compressors and electronic LEV’s provide higher efficiency with controlled power usage. The outdoor unit powers the indoor unit, and should a power outage occur, the system is automatically restored when power returns. Ideal for applications such as bedrooms, home offices, living rooms, dining rooms, bonus rooms, […]