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SERVICE AREA

Key Heating & Air Conditioning Inc. is proud to serve New England. We have installed and serviced heating and cooling systems for customers in The Lakes Region and Seacoast communities of New Hampshire, and Maine. Here are some of the communities where we’ve brought our expertise:

New Hampshire

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  • Alton

  • Atkinson

  • Auburn

  • Barrington

  • Bedford

  • Brentwood

  • Candia

  • Center Harbor

  • Center Tuftonboro

  • Chester

  • Danville

  • Deerfield

  • Derry

  • Dover

  • Durham

  • East Hampstead

  • East Kingston

  • Effingham

  • Epping

  • Exeter

  • Farmington

  • Freedom

  • Fremont

  • Greenland

  • Hampstead

  • Hampton

  • Hampton Falls

  • Kingston

  • Kensington

  • Lee​

  • Madbury

  • Middleton

  • Milton

  • Mirror Lake

  • New Castle

  • New Durham

  • Newfields

  • Newington

  • Newmarket

  • Newton

  • Newton Junction

  • North Hampton

  • Northwood

  • Nottingham

  • Ossipee

  • Portsmouth

  • Raymond

  • Rochester

  • Rye

  • Rye Beach

  • Sanbornville

  • Sandown

  • Seabrook

  • Somersworth

  • South Hampton

  • Stafford

  • Stratham

  • Tuftonboro

  • Union

  • Wakefield

  • Wolfeboro

Geothermal System

heating repairs

Key HVAC is the most reliable and fastest service to repair all your heating needs.

heating maintenance

Our qualified technicians perform maintenance year round to ensure your system is optimal. 

heating replacements & new installs

Key HVAC installs new heating systems with customer satisfaction, guarenteed.

Filters, humidifiers & thermostats

Key HVAC keeps your home comfortable while keeping costs down with these heating accessories.

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