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Prevent unexpected breakdowns and keep your heating and cooling system running efficiently with our comprehensive HVAC maintenance plans. For homeowners and businesses in New Hampshire, routine maintenance is the smartest investment you can make—it extends equipment life, lowers energy bills, and improves indoor air quality. Our certified technicians thoroughly inspect every component, clean coils, check refrigerant levels, test safety controls, and lubricate moving parts. We also verify thermostat accuracy and tighten electrical connections to prevent future issues. Maintenance plans are available for spring cooling tune-ups and fall heating inspections. By catching small problems early, we save you from costly emergency repairs. Plus, regular service keeps your manufacturer warranties valid. Whether you have a furnace, heat pump, boiler, or central AC, our team tailors each visit to your specific system. We provide a detailed report after every service, so you know exactly what was done and what we recommend. Choose HVAC Plus LLC for dependable maintenance that gives you peace of mind all year long.

Upgrading your heating or cooling system is a big decision—but with HVAC Plus LLC, it’s a stress-free experience. We handle complete installations of energy-efficient furnaces, air conditioners, heat pumps, boilers, and ductless mini-splits for New Hampshire homes and businesses. Our process starts with a thorough assessment of your space, insulation, ductwork, and comfort goals. We don’t just sell you the biggest unit; we calculate the right size for maximum efficiency and even temperatures. Once we recommend the best system for your budget and needs, our NATE-certified technicians handle the entire installation with precision. We properly size refrigerant lines, seal duct connections, set up thermostats, and test every function to ensure peak performance. After installation, we walk you through system operation and maintenance tips so you feel confident. All our installations come with a workmanship guarantee. Plus, new high-efficiency systems often qualify for utility rebates—we can help you identify available incentives. Enjoy worry-free comfort with a professionally installed HVAC system from HVAC Plus LLC.

Boilers are the heart of many New Hampshire homes, providing steady, radiant heat through cold New England winters. At HVAC Plus LLC, we specialize in complete boiler services—from installation and routine maintenance to emergency repairs. Our technicians have extensive experience with all boiler types, including gas, oil, and high-efficiency condensing models. During a maintenance visit, we inspect the heat exchanger, check for leaks, test pressure relief valves, bleed radiators, and verify proper combustion. For repairs, we quickly diagnose issues like strange noises, uneven heating, or pilot light problems and carry common replacement parts on our trucks to fix most issues in one visit. If your boiler is over 15 years old or constantly breaking down, we can help you choose a modern, energy-efficient replacement that reduces your heating bills by up to 30%. We also offer boiler zoning controls to let you heat only the rooms you use. Count on HVAC Plus LLC for reliable, honest boiler service that keeps your property warm and safe all winter long.