GSM Services has set itself apart with superior customer service, reliability, and quality of work for over 97 years in Dallas!
Proudly located in Gaston County, we’re your trusted, one-stop shop for complete home comfort solutions. We're a licensed & insured heating & air conditioning, crawl space, insulation, and air duct cleaning company in Dallas, NC.
Get an free online quote for a new HVAC system or duct cleaning—just 30 seconds!
Experience cleaner air with our comprehensive duct cleaning! We don’t just clean the vents—we inspect, sanitize, and ensure every part of your duct system is free of dirt and debris. Our service includes a disinfectant treatment to eliminate viruses, bacteria, and spores, ensuring a level of cleanliness that stands above the rest. Get an instant online quote and start enjoying a fresher, healthier home today!
If your Heating system isn’t working, GSM Services offers fast service and affordable repairs. Our certified HVAC technicians have decades of experience and will inspect your system to find the issue. We provide free service calls with repairs and a written estimate before any work begins, so there are no surprises. We service all types and models, and ensure reliable and cost-effective solutions.
Is your Furnace or HVAC system old or inefficient? Upgrading to a new, energy-efficient system can often save more in the long run than constant repairs. Let our certified team guide you through the latest HVAC technology options for a cost-effective upgrade that enhances comfort and efficiency! Our top-of-the-line units offer exceptional comfort, ultra-quiet operation, and improved air quality, with high-efficiency options that can cut energy costs by up to 30%. Trust our HVAC experts for reliable advice and outstanding service. Call or book online today for a free quote on a new system!
Try our system cost calculator to see the cost of replacing your home’s heating & air conditioning system. Simply answer a few questions about your home, and receive a custom quote in just 30 seconds.
Searching for reliable crawl space contractors in Dallas, NC? GSM Services offers expert crawl space solutions, including moisture control, insulation, encapsulation, and mold removal. Our team safeguards your home from moisture damage and mold growth, enhancing air quality, improving energy efficiency, and reducing pests in your home. A healthy crawl space also contributes to greater structural stability and comfort. Easily book a free crawl space inspection and quote online today if you're experiencing any issues!
Looking for a trusted home insulation company in Dallas, NC? GSM Services specializes in high-quality insulation solutions that improve energy efficiency, reduce utility costs, and enhance indoor comfort. Our expert team provides professional insulation installation, helping keep your home comfortable year-round. Serving Dallas and surrounding areas, we’re committed to delivering reliable, energy-saving solutions for every home. Contact us today for a free insulation inspection and quote!
Finished project
Finished project
Crawl Space Encapsulation Completed
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]
2023 Community Choice Award Winner
GSM Services was voted Best Heating & AC Company & Best Home Service Company in the county.
Best of Gaston 2022
GSM Services won Best Heating & Cooling Company, Top Place To Work, & Best Home Service Company
2021 Best Contractor to Work For - ACHR News
GSM Services was named 2021 Best Contractors to Work for by National ACHR News
Best of Gaston 2021
GSM Services won Best Heating & Cooling Company, Top Place To Work, & Best Home Service Company
Best of Gaston 2020
GSM Services was incredibly honored to win Best HVAC Company, Best Roofing, Best Customer Service, Best Home Service Company
Top Place to work Charlotte 2019
GSM was voted as one of the top places to work in 2019 by the Charlotte Observer.
Best of Gaston 2019
Best of Gaston 2019 Winner for Best Heating & Air Conditioning Company and also Best Home Repair Company
Insulation Call, Performed an installation of new insulation to the attic
AC Call, Performed a changeout of a Gaspack
Guttering Call, Performed a Gutter Cleaning
Crawlspace Call, Performed an encapsulation of the crawlspace
Guttering Call, Performed an installation of Gutter Guards
Heat Pump Call, Installed a new Goodman Heat Pump in crawl space
Unit Changeout Call, Performed an installation of a new furnace and AC system
Dryer Vent Call, Performed an installation of a new Dryer Vent.
A/C Call, Performed a changeout of a Goodman Furnace & A/C Unit.
Insulation Call, Performed an installation of a Santa Fe Dehumidifier and re-insulation of the floor
AC & Furnace Call, Before and After of a Furnace Changeout
Duct Cleaning call, Performed duct cleaning on 13 vents and 1 return
Insulated Crawl Space Door, New Crawlspace door under home