Address: P.O. Box 792, 185 School Street,
Littleton, NH 03561

Office: 603-444-6770

Cell: 603-616-9664

NH's Trusted Heating and Cooling Expert

NH's Heating and Cooling Expert

Meet Jeff MacKay

Hi, I’m Jeff, and for over 30 years, I've been NH's trusted heating and cooling expert dedicated to providing expert heating and cooling solutions to homes and businesses.

We proudly serve northern New Hampshire communities including Littleton, Lincoln, Plymouth, Hanover, and beyond, and are committed to excellence in every job. Ensuring your comfort and satisfaction are our top priorities!

Let's tackle your heating and cooling needs together—because when it comes to your home or business, nothing but the best will do.

Contact Jeff MacKay Mechanical For Your Free Estimate

(Office) 603-444-6770
(Cell) 603-616-9664

NH's Heating and Cooling Expert

Jeff's HVAC Tips & Tricks

When to Turn on the Heat in New Hampshire (and How to Save on Energy Costs All Winter)

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Jeff MacKay Mechanical, LLC

NH's Heating and Cooling Expert

Our Client Reviews

He's my go-to man for plumbing and heating. The best!

John F.

I recently used the services from Jeff Mackay Mechanical for some help with the furnace in my home and was very satisfied with the services they provided. I had called them out because I was considering switching out my coal furnace for a new oil furnace. Jeff was very friendly and helpful while he was here and gave me great advice about what my options were. Overall, I thought the services from Jeff Mackay Mechanical went very well, I will definitely continue to use them when I need, and I would highly recommend their services.

Chris T.

We Proudly Serve the Following New Hampshire Towns

in Coos and Grafton Counties:

Ashland, NH

Bath, NH

Berlin, NH

Benton, NH

Canaan, NH

Cardigan, NH

Colebrook, NH

Enfield, NH

Franconia, NH

Gorham, NH

Grafton, NH

Hanover, NH

Haverhill, NH

Holderness, NH

Jefferson, NH

Lancaster, NH

Landaff, NH

Lincoln, NH

Lisbon, NH

Littleton, NH

Northumberland, NH

Orford, NH

Pittsburg, NH

Plymouth, NH

Stewartstown, NH

Thornton, NH

Warren, NH

Waterville Valley, NH

Whitefield, NH

Woodstock, NH

License number: GF0700553

Hours

Mon – Fri: 8:00am – 4:30pm

Sat – Sun: By Appointment

24-Hour Emergency

Contact Us

P.O. Box 792, 185 School Street Littleton, NH 03561

Office: 603-444-6770

Cell: 603-616-9664

jm4heat@gmail.com

Copyright ©  Jeff Mackay Mechanical.  All Rights Reserved.