Hickory's Top HVAC Experts
AC Repair, HVAC Installation, Duct Cleaning, Insulation Experts in Hickory, NC
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!
New HVAC System Cost & Duct Cleaning Prices in Hickory
Get a free online quote for a HVAC system installation or duct cleaning services in just 30 seconds!
Heating & AC Services in Hickory:
Insulation, Crawl Space, Air Quality, Mold, Generator & Other Home Services in Hickory:
AC Repair in Hickory, NC
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.
Hickory's HVAC System Replacement & Installation Pros
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!
Certified to Service and Install all Types of Heating & Cooling Systems
- Central HVAC Systems
- Ductless Mini Splits
- Package Systems
- Heat Pump Systems
- Gas furnaces
- Oil furnaces
- Electric Heating Systems
Hickory's Crawl Space Service Experts
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!
Crawl Space Solutions:
- Crawl Space Mold Removal
- Crawl Space Encapsulations
- Crawl Space Cleanings
- Crawl Space Insulation
- Crawl Space Dehumidifiers
- Vapor Barrier Installations
- Sump Pumps & Water Removal
- Crawl Space Doors
Expert Duct Cleaning in Hickory:
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!
Top Insulation Company in Hickory:
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.
Case Studies From Hickory
Challenge
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.
Solution
GSM Services solution was to perform a Whole Home Energy Evaluation/Audit.... [Read More]
Photo Galleries From Hickory
Work Requests From Hickory, NC
- Project Location: Hickory, NC
The front attic of my house needs more insulation, closet and office which share walls with that attic tend to get hot in the summer and cold in the winter. Might also need additional insulation in the back attic. - Project Location: Hickory, NC
Looking to have my house insulated. - Project Location: Hickory, NC
Spray foam insulation - Project Location: Hickory, NC
My house is not insulated and my a/c runs all day - Project Location: Hickory, NC
Air infiltration in unfinished basement - Project Location: Hickory, NC
Need estimate on crawl space project. - Project Location: Hickory, NC
Your guys were great-courteous, diligent and careful. I coughed alot after they left. I assumed I was catching a cold. I went to Winston Salem and my cough went away while I was there. When I came home yesterday afternoon my cough returned almost immediately. It prevented my sleeping. There appears to be a thin layer of grey dust inside the house. I cleaned the heat pump return over the weekend and it has accumulated grey dust on it. There is dust on the window sills, and on the furniture. I'm returning to Winston Salem this morning, and I'd appreciate your calling me when you have time. I'm sure there's no reason for concern. I don't mind cleaning the dust at all. I'm just concerned about my cough and my silly animals. Thanks. - Project Location: Hickory, NC
I have a Generac Natural gas home generator and it is leaking oil. Do you service these generators? - Project Location: Hickory, NC
I need a naw AC unit and wanted to have an audit done before getting quotes to know more about what I should expect for a replacement. Also want to know if attic insulation is adequate. And anything else pertaining to making the house more energy efficient. - Project Location: Hickory, NC
Need additional insulation attic & duct sealing in basement - Project Location: Hickory, NC
Our ac isn't keeping up. We have a ranch with a full basement. The basement is cold and the main living area is 80 degrees. We would love to see where else we are losing energy. - Project Location: Hickory, NC
I'd like a quote on how much it would be to have more insulation blown into our attic. - Project Location: Hickory, NC
Looking to put cellulose insulation in our attic. - Project Location: Hickory, NC
When it rains, it leaks into my crawlspace. And the insulation isn't very good. - Project Location: Hickory, NC
Service Master of Hickory had to remove all the insulation on my sub floor in the crawl space under the house in a water heater rupture situation. It is now time in the process to replace that insulation as they should have finished the mold remediation sometime today. They recommended that I contact you for the insulation replacement, so I guess I need an estimate. We are not currently living in the house but I've given you my cell so we can arrange a time. Thanks, - Project Location: Hickory, NC
High Electric Bills.....we need an energy assessment to see if there is something that can be done to lower the energy bills. - Project Location: Hickory, NC
Heat and air lost water heater heat pump old heat adjustment - Project Location: Hickory, NC
I noticed some daylight coming in around some of my doors, I do not know where else we may be losing heat/air, and wasting energy. - Project Location: Hickory, NC
I am only interested in getting estimate on a tankless water heater, we have a 1650 ft ranch with 2 baths, the area under the house is low where our current water heater is , so it is too small, but no room to put a larger one. could you give us an estimate, we live in hickory. It may be a few months before we are at a point to consider starting work. - Project Location: Hickory, NC
Had trench and sump pump installed because of some water leakage into the crawl space around some sections of the foundation. Maybe 2" of water near the foundation only. Now I would like to seal the crawl space. Need quote
See all work requests
Serving the following Hickory, NC zip codes
28601, 28602, 28603, 28601, 28602, 28603
Related Videos
Heating - Assembling and Installing a Furnace in North Carolina
Products & Services
HVAC Systems
- air conditioning company
- air conditioning systems
- central air conditioning
- ductless air conditioning
- gas furnace
- geothermal heating and cooling
- HVAC tune ups
- high-efficiency HVAC systems
- ductless heating systems
- HVAC companies
- furnace installation
- furnace repair
- air conditioning installation
- air conditioning repair
- heat pump installation
- heat pump repair
Crawl Space Repairs
- crawl space encapsulations
- crawl space vapor barrier
- crawl space cleanings
- mold removal
- dehumidifers
- crawl space inspections
Home Energy Audits
- energy efficiency audit
- air leakage testing
- blower door testing
- crawl space inspection
- attic inspection
- insulation inspection
Home Generators
- generator installation
- generator repair
- generator service
Home Insulation Services
- attic insulation
- insulation installation
- insulation inspections
- insulation removal
- insulation company
- blown in insulation
- cellulose insulation
- duct insulation
- green insulation
- insulation contractors
- pipe insulation
- reflective insulation
- rigid foam insulation
- roof insulation
- wall insulation
- window insulation
- Crawl Space Insulation
- radiant barrier insulation
Air Sealing
- sealing air leaks
- air duct leakage
- air duct sealing
- air leakage testing
- door air seal
- window air leakage
Air Duct Cleaning
- duct cleaning services
- duct disinfectant spray treatment
- air vent cleaning
Ductwork
- ductwork repair
- ductwork installation
- ductwork cost
- furnace ductwork
- HVAC ductwork
- duct cleaning
Dryer Vent Cleaning
- dryer vent cleaning services
- dryer vent replacement
Company Awards
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.
Recent Jobs and Reviews in Hickory, NC
Job Locations and Reviews
Dryer Vent Cleaning before and after
Furnace Repair.