Heating & Air Services

Air conditioning services

• AC Repair: Our expert technicians are trained to diagnose and repair all types of AC issues quickly and efficiently. Whether it’s a refrigerant leak, a faulty compressor, or any other problem, we have the skills and tools to restore your cooling system to optimal performance.
• AC Replacement and Installation: If your current air conditioning unit is beyond repair or you're looking to upgrade to a more energy-efficient model, our team will help you choose the right system for your home. We consider your cooling needs, budget, and preferences and install top-quality units from leading manufacturers like Lennox to ensure long-lasting comfort and reliability.
• AC Maintenance: Regular maintenance is essential for keeping your air conditioning system running smoothly and efficiently. Our AC maintenance plans are designed to catch potential issues early, extend the lifespan of your unit, and improve energy efficiency, helping you save on energy bills while ensuring consistent comfort.

Heating system services - furnaces & boilers

• Heater Repair: GSMS offers expert repair services for all types of heating systems, including furnaces and boilers. Our skilled technicians are equipped to diagnose and fix a wide range of issues, from pilot light problems to thermostat malfunctions.
• Heater Replacement and Installation: If your furnace or boiler is outdated or beyond repair, we’ll help you select the best heating system for your home, considering energy efficiency, heating capacity, and budget. Our team installs high-quality furnaces and boilers from leading manufacturers like Energy Kinetics, ensuring efficient heating.
• Maintenance Services: GSMS offers comprehensive heating maintenance services that include detailed inspections, cleaning, and tune-ups. Our maintenance plans extend the lifespan of your heating system, improve energy efficiency, and ensure consistent performance throughout the winter season.

Ductless mini-split heat pump systems

• Mini-Split Repair: Our expert technicians are trained to handle a variety of issues with mini-split heat pumps and ductless systems, from refrigerant leaks to malfunctioning indoor units. We provide prompt and reliable repairs to restore your system’s efficiency and performance.
• Mini-Split Replacement and Installation: When it’s time to upgrade or replace your existing ductless system, GSMS offers professional installation services for mini-split heat pumps and ductless systems. We help you select the best system for your home and ensure a seamless installation process.
• Mini-Split Maintenance: Regular maintenance is crucial for the optimal performance and longevity of your ductless mini-split system. GSMS provides comprehensive maintenance services, including cleaning, inspections, and tune-ups. Our maintenance plans keep your mini-split running smoothly.

Ductwork services

• Duct Cleaning with Roto Brush: Over time, dust, allergens, and other contaminants can accumulate in your home’s ductwork, affecting indoor air quality and the efficiency of your HVAC system. GSMS offers professional duct cleaning services using advanced Roto Brush technology. Our thorough cleaning process removes debris from your ducts, ensuring cleaner air and a more efficient heating and cooling system.
• Ductwork Installation: Properly designed and installed ductwork is essential for the efficient operation of your HVAC system. GSMS provides expert ductwork installation services, ensuring that your ducts are correctly sized and configured to deliver optimal airflow throughout your home.

Smart thermostats

Upgrade your home’s climate control with a smart thermostat installed by GSMS. Smart thermostats offer advanced features that enhance your comfort and improve energy efficiency. Our expert technicians will install and configure your new smart thermostat, ensuring seamless integration with your HVAC system. Enjoy the convenience of remote control, energy usage insights, and automated temperature adjustments.

Why choose GSMS for your HVAC service needs?

• Comprehensive Expertise in HVAC Services: Since 1987, GSMS has been the trusted name in New Hampshire for all your HVAC needs. Our extensive experience and specialized knowledge in air conditioning, heating, ductless systems, ductwork, and smart thermostat installations ensure that we provide top-notch service tailored to your home’s specific requirements.
• Highly Skilled Technicians: Our team of certified and highly trained technicians is dedicated to delivering exceptional service. We stay updated with the latest industry advancements and technologies, allowing us to handle any HVAC challenge with confidence and expertise. Whether it’s a simple repair or a complex installation, you can trust us to get the job done right.
• Quality Products and Materials: At GSMS, we use only the highest quality products and materials from leading manufacturers. Our commitment to quality ensures that your HVAC systems are reliable, efficient, and built to last. From air conditioners and furnaces to mini-split systems and smart thermostats, we provide solutions that enhance your home’s comfort and efficiency.
• Customer-Centric Approach: As a family-owned business, we prioritize customer satisfaction and personalized service. We treat your home with the utmost care and respect, ensuring a seamless and hassle-free experience from start to finish. Our friendly and professional team is always ready to answer your questions and address your concerns.
• Local Reputation for Excellence: Serving the New Hampshire community since 1987, GSMS has built a reputation for trust, quality, and reliability. Our long-standing commitment to excellence has earned us the loyalty of countless homeowners who rely on us for their HVAC needs.