Comfort by Design

Count on Us for Flawless Installations and High-Quality Equipment

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Trust an Expert to Take Care of Your Property’s Systems


Work With a Plumbing and HVAC Contractor in Portsmouth NH and Surrounding Areas

Do you need help maintaining your heating, cooling, and plumbing equipment? Turn to a company that has plenty of experience to pull from. Trust CMC Mechanical Services LLC for HVAC services and more in Portsmouth NH and surrounding areas. We offer our services to both homeowners and business owners. Our family has been in this business for over 80 years, so you can rest assured that you’re in good hands.

  • Checking the Residential AC Units

Avoid System Malfunctions With Routine Maintenance

Trust Us As Your Plumbing and HVAC Contractor in Portsmouth NH and Surrounding Areas.

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Why Do Property Owners Prefer Us?


Our plumbing and HVAC contractors are knowledgeable about a wide range of systems. We always complete our work efficiently and according to industry best practices. When you choose us, you’ll be working with licensed experts. Ask us about our financing options.

Learn More About Our Services

Turn to us for a variety of helpful services. Reach out to us when you need:


  • HVAC services– trust us to work with both heating and cooling equipment
  • Plumbing services – we handle everything from fixture installation to repairs
  • Gas piping services – ensure that your gas systems are safe and ready to use
  • Geothermal and solar services – choose an eco-friendly option for heating and cooling
  • Generator services – install a backup power supply for your property


To discuss your needs with a local HVAC contractor, call (603) 430-2852 today.

  • Newly Installed Faucet

Proudly Serving

Greenland

New Castle

Rye

Eliot

Kittery, ME

Exeter, NH

Stratham

North Hampton

Newmarket

Newfields

York, ME

Rochester

Hampton

Dover

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