Proudly serving families in Massachusetts and New Hampshire since 1946!

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24/7 Heating and Cooling Repair ServicesWe service all makes and models of heating and cooling equipment with no extra for nights or weekends! Schedule online and save $25. Schedule Repair Service »

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Climate Design Systems

Residential Heating & Air Conditioning Services

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 Service All Makes and Models

Air Conditioner Repair & Installation

Beat the heat with our affordable cooling services!

Whether you are in need of a quick A/C  repair, maintenance, or the installation of a new unit, our trained professionals have you covered!

We offer a full line of Lennox Air Conditioners with great energy efficient models that are also provide quiet operation. Need repair or maintenance on your existing A/C? No problem! We’re available 24/7 for all of your cooling and home comfort needs.

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