For over 98 years, GSM Services has made home comfort easy with trusted service, reliable solutions, and top-quality work in Gaston County. As a locally owned, licensed, and insured home comfort expert, we provide heating & cooling, insulation, air duct cleaning, and crawlspace services to improve comfort, air quality, and energy efficiency. Enjoy easy online booking, instant quotes, and free service calls with any repair!
Need a new heating and cooling system or duct cleaning services? Get a free instant quote online in just 30 seconds!
GSM Services specializes in energy-efficient heating and cooling system installations that enhance your home's comfort and save on energy costs. Our certified professionals ensure a smooth, reliable experience from start to finish. Book a FREE consultation online in seconds to explore ultra-quiet, high-efficiency systems that boost comfort, improve air quality, and lower energy bills. With clear pricing, flexible financing, and industry-leading warranties, upgrading your heating system has never been easier!
At GSM Services, our certified HVAC technicians inspect, service, repair, and replace all heating & cooling systems, any brand or model. Need a furnace repair? We'll waive the $69 diagnostic fee with your repair! Our licensed experts offer fast, affordable service, pinpointing issues with thorough inspections. Enjoy free service calls with repairs, upfront written estimates, and no surprises. All repairs come with outstanding warranties for your peace of mind.
We are Belmont's top home insulation company. At GSM Services, we offer expert insulation solutions to boost your home's energy efficiency and comfort. Our skilled team handles everything from attics to crawl spaces, ensuring precise installation and significant energy savings. Rely on us for professional, dependable service tailored to meet your insulation needs.
Struggling with moisture, mold, or damage in your crawl space? We’re here to help! Our experts transform crawl spaces into healthy, energy-efficient spaces. Get a FREE Crawl Space Inspection today! We will check the humidity level, look for any mold or growth, inspect your home's insulation and air duct system, air leakage, air quality and more! We can provide you different solutions to create a healthy, comfortable, and safe environment under and inside your home.
Our duct cleaning services thoroughly clean your entire duct system—not just the air vents—to ensure optimal air quality and system efficiency. We start with a full inspection, checking for tears, leaks, or any issues that could affect performance. Our comprehensive cleaning service includes a special disinfectant spray treatment to leave your ducts fresh and sanitized. Get a free, instant online quote in seconds and breathe cleaner air with our professional duct cleaning services!
Home improvements are a great way to start off your new years resolution of "saving money". Take a look at your heating and cooling costs and have a Whole Home Energy Evaluation done.... [Read more]
Do you need a wifi thermostat in your home? How much does a wifi thermostat cost? What makes a wifi thermostat smart? How much money can you save with a wifi thermostat?.... [Read more]
High energy bills can come as a surprise in the winter. In our service area, air conditioners see a lot more use than heaters. When temperatures drop, homeowners might feel relieved as bills start to lower as well-until the heater becomes more and more of a necessity.... [Read more]
Furnace Tune Up
Humidifier maintenance and tune up
Crawl space - Encapsulation
2025 Best Heating & Cooling Company
GSM Voted 2025 Community Choice Award Winner.
2024 Community Choice Award Winner
Voted Best Local HVAC Company in 2024.
2023 Community Choice Award Winner
Voted Best Heating & AC Company & Best Home Service Provider in the county.
Best of Gaston 2022
GSM Services won Best Heating & Cooling Company and Top Place To Work in the County!
Best Contractor to Work For - ACHR News
Named Best Contractor to Work For by ACHR News, a leading national industry publication in 2021.
Top Place to Work in Charlotte
GSM was recognized as one of the Top Places to Work in 2019 by The Charlotte Observer.
Dryer vent Cleaning
Amana S Series Unit Installation
AC Call, Performed a changeout of a Gas Pack unit
AC Call, Performed an installation of a Mitsubishi Mini Split
Crawl Space Call, Performed an encapsulation of the crawl space
Furnace Call, Performed a changeout of the system
Mini Split Call, Performed an installation of a Mitsubishi Mini Split
Guttering Call, Performed a gutter cleaning
Furnace Call, Performed a changeout of AC & Furnace
Dryer Vent Call, Before & After of a Dryer Vent cleaning
Dehumidifier Call, Performed an installation of a new Sante Fe Dehumidifier and encapsulation
Air Seal Call, Performed an air sealing of the crawl space
Insulation Call, Installed blow-in cellulose insulation and re-insulated the attic.
Dehumidifier Call, Before & After of an Installation of a dehumidifier
AC and Heating Call, Performed new installation of an AC and Furnace
AC & Furnace Call, Replaced Air Conditioner and Furnace
HVAC Installation, New AC Unit
New HVAC Unit, HVAC Unit Install
Mini Split Unit Installation, Mitsubishi Install
Furnace Install, New AC Unit