Welcome to Mack's

Heating, Air conditioning, Water Treatment

Veteran owned, Mack's Heating and Air Conditioning, LLC provides heating, cooling, and water treatment services in New Hampshire since 2005.

We offer a full range of heating and cooling services in NH including: Water Treatment, Boiler Repair and Installation, HVAC Services (Heating, Ventilation, Air Conditioning, and Mini Splits).

Our expert Emergency Maintenance team are available 24 Hours 7 days a week, 365 days a year to attend to your problems promptly and competently!

Our service area covers an approximate 30 mile radius around Hooksett, NH.


Financing is available for major purchases through the National Energy Improvement Fund, making home energy efficiency, resilience, health and comfort affordable.  Click here for more information.
hvac nh

BIG SHOUTOUT AND THANKS TO DAVID and Mack's Heating for saving us yesterday when the oil tank suddenly needed to be replaced. You rock Dave!

Suzanne Spaulding Shaw

Dave did an AWESOME job with our furnace and hot water heater! We couldn't be more pleased and would highly recommend Mack's Heating and Air Conditioning.

Karren Kobert Crain

Quick and reliable service!

Sarah Smith

Dave was willing to work with me in designing my heating system.   A lot of heating companies did not want to work outside the box and install my new Caddy wood furnace.  Dave was not afraid to learn about this new system and help me correctly install it.  He went beyond the call of duty.  I would definitely recommend him.

Philip G.
April 23, 2018

They converted my furnace and water heater from propane to natural gas.  They were professional and it was a pleasure to have been a customer.  Job was done well.  Thank you!

Chynna W.
August 1, 2016

Very thorough. Great service. Definitely will use again.

Dong L.
 July 1, 2016

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