Granite State Refrigeration Services - Derry's Experienced HVAC Services

Our installation process begins with a detailed consultation to assess your home's specific heating and cooling needs. We'll recommend the right system, whether it's a ductless mini-split, a conventional heat pump, or a furnace, considering Derry's climate and your budget. Our licensed technicians handle the entire installation with precision, followed by a thorough explanation of your new system's operation. Every new installation comes with our one-year labor warranty for your peace of mind.

We prioritize repair calls to restore comfort to your home or business promptly. Our experienced technicians arrive equipped to diagnose common issues with furnaces, heat pumps, and other systems. For many repairs, we can complete the work in a single visit using parts from our local supplier network. We communicate the problem and solution clearly before any work begins, ensuring you understand the repair and its cost.

The most effective step you can take is regularly checking and replacing your system's air filter, typically every 1-3 months. A clogged filter is a frequent cause of reduced efficiency and system strain in our area. For gas furnaces, ensure the area around the unit is clear. If you suspect a pilot light issue, it's safest to call us. Beyond that, our scheduled maintenance service is designed to catch other potential problems, clean critical components, and keep your system running reliably through New Hampshire's seasons.