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Absolute Mechanical Systems is a family-run HVAC company based in Southern New Hampshire and parts of Massachusetts, offering affordable and trustworthy Heating, Ventilation, Cooling, Air Quality, and Water Heating services. Established in 1998, we specialize in residential, commercial, and industrial HVAC design/installation, equipment upgrades, seasonal maintenance, and repair of all makes and models of heating, cooling, and air quality systems. Our team is dedicated to providing exceptional value, convenience, efficiency, and long-term rewards.