For over 98 years, GSM Services has made home comfort easy with trusted service, reliable solutions, and top-quality work in Hickory. As a licensed and insured home comfort specialist, we offer heating & cooling, insulation, air duct cleaning, crawlspace and mold services to improve comfort, air quality, and energy efficiency. Enjoy easy online booking, instant quotes, and free service calls with any repair!
Get a free online quote for a HVAC system installation or duct cleaning services in just 30 seconds!
If your Air Conditioning system isn’t working, you can always trust GSM Services for prompt, affordable repairs. Our licensed and insured HVAC technicians, with decades of experience, will thoroughly diagnose the problem and provide a clear, no-obligation estimate upfront—no surprise charges. We also offer free service calls with repairs and are qualified to work on all system types and models.
If your heating & cooling system is aging or in need of frequent repairs, upgrading to a new, energy-efficient model can often be a more cost-effective solution. Our certified team can guide you through the latest HVAC technology options for a comfortable, efficient upgrade. Our premium systems deliver exceptional comfort, ultra-quiet operation, and improved air quality, with high-efficiency models that can lower 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!
GSM Services provides professional crawl space services in Hickory. Our team protects your home from moisture damage and mold, enhancing air quality, boosting energy efficiency, and reducing pests. A well-maintained crawl space also strengthens structural stability and overall comfort. Book a free crawl space inspection and quote online today!
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!
Looking for reliable and affordable home insulation services in Hickory? GSM Services specializes in attic, wall, crawl space, basement, floor, and garage insulation to improve comfort and energy efficiency. As a trusted full-service insulation contractor, we offer a variety of insulation types to fit your home and budget. Struggling with high energy bills or uneven room temperatures? Book your free insulation inspection today! Our experts will evaluate your insulation, identify air leaks or moisture issues, and provide a detailed, no-obligation quote tailored to your home’s needs.
This customer contacted us through Duke Energy's rebate program to find ways to help them make their house more efficient and comfortable and save money on their power bills. The homeowner wanted to know if there were any issues with their attic insulation, crawl space and heating and air conditioning system.
GSM Services solution was to perform a Whole Home Energy Evaluation/Audit.... [Read More]
28601, 28602, 28603, 28601, 28602, 28603
Heating - Assembling and Installing a Furnace in North Carolina
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.