978-689-8312 (tap to call)

COVID-19 Update

We are open, fully staffed, and ready to help!

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Call Us 24/7!

For Over 75 Years

Always at Your Service...
For Over 75 Years!

We are a full service HVAC contractor providing repair, maintenance, and installation for all types of heating and air conditioning systems. Customer satisfaction and reliable service is at the core of everything we do. We look forward to keeping you comfortable!

ANY Repair Service!

$50 off

Save $50 on you next heating, plumbing, or cooling repair. We service all makes and models 24/7!

Home Of The

$69 Tuneup

Avoid breakdowns! Stay warm and save money with our $69 furnace tuneup. Get peace of mind for the entire season!

Our Family Serving Yours, For Over 75 Years!

Climate Design Systems

Experienced and polite repair technicians, up-front pricing, and a commitment to total customer satisfaction are just a few of the reasons that residents in the Merrimack Valley and surrounding areas trust their home comfort to Climate Design Systems. We are a full-service HVAC contractor specializing in the repair, maintenance, and installation of residential heating and air conditioning systems.

Nobody plans on having a heating or cooling emergency, and we realize this can be a very stressful situation. Our staff of 150+ employees and over 75 service vehicles are ready to provide immediate service 24/7 and will work with you every step of the way to ensure total customer satisfaction.

We look forward to working with you!

Certified climate design systems in Manchester, NH
HVAC Inspection In Methuen, MA and Manchester, NH
Emergency HVAC service in Peabody, MA
COVID-19 Response

Climate Design Systems, LLC has committed itself not only to staying open through this crisis, but doing so in the most responsible way possible.

Our focus has been on educating and stream lining our process to meet the needs of our customers. All of our field employees are being provided with Face Mask, Gloves, Booties, and Sanitizer, and when possible are being directed not to enter the home at all.

We offer a completely contact-less service, with billing taking place electronically.

Please call 978-689-8312 with any questions or to find out more about how we are working to keep our community safe.

Heating, Air Conditioning, Plumbing, & More!

HVAC repair & service in Manchester, NH


We provide 24/7 heating repair, maintenance, and installation to keep you warm and comfortable during the harsh New England Winter.


Whether you need a quick A/C repair, maintenance, or the installation of a new system, our trained technicians have you covered!

Air Quality

Improve the indoor air quality of your home! Choose from humidification control, UV germicidal lights, air purification, filtration, and more.


Whether it’s a new hot water tank, or a clogged drain, our team of licensed plumber is ready to help with all of your plumbing issues!


Get peace of mind knowing your protected against power outages and keep your home up and running with a back-up generator.

Commercial HVAC

Commercial HVAC design and build services including fabrication, design, service, and maintenance of industrial HVAC systems and equipment.

Awards & Affiliations

BBB Accredited Business Logo
Logo of Angies List
Merrimack Valley Chamber Of Commerce Logo
Nadca Logo
NH Saves Logo
Mass Save Logo
Logo of Indoor Air Quality Association
Associated Builders & Contractors Logo

Rich P.


Had a complete new oil furnace and hot water system installed by them and couldn't be happier with the service and the pricing. They were extremely competitive with pricing. They had the whole install completed in a day and a half, which included removal of all the old equipment. The techs were very knowledgeable and respectful ( including wearing a mask the entire time in our home ). Would recommend highly!

HVAC Installation By Climate Design System

Josh F.

New Hampshire

Once the job was completed I even received a follow up phone call from Jake to make sure everything went well, that the house was heating sufficiently, and to make sure I was satisfied with the work. I could not have been happier with my choice to go with Climate Design and Jake. I would absolutely be using this company again in the future and for sure will be recommending Jake and his team in the future.