Key Heating & Air Conditioning: Experienced HVAC Services Serving Exeter, NH 03833

If your AC isn't cooling properly, it could indeed be a refrigerant leak or a faulty thermostat—common issues in our area. First, check your thermostat settings and batteries. If that doesn't help, it's time to call a professional. Key Heating & AC offers 24/7 emergency service for Exeter residents. Our factory-trained technicians can quickly diagnose the problem, whether it's a leak requiring a repair and recharge or a thermostat needing replacement, to restore your comfort efficiently.

Yes, we offer a comprehensive Maintenance Membership program. For homeowners in the NH Seacoast, this plan provides scheduled tune-ups for your heating and cooling systems, which helps prevent unexpected breakdowns, improves efficiency, and can extend the life of your equipment. Members also receive priority scheduling for service calls and discounts on repairs. It's a proactive way to manage your home's HVAC health, especially important with our variable New England seasons.

We specialize in a wide range of systems suitable for older homes, focusing on efficiency and comfort. This includes high-efficiency furnaces and boilers, as well as ductless mini-split heat pumps which are excellent for homes without existing ductwork. We're also experts in geothermal systems, a great long-term investment for energy savings. We start with a free in-home estimate and energy assessment to understand your home's specific needs and recommend the best solution from brands we trust like Mitsubishi, Bryant, and Bosch.