AC replacement in Gastonia NC & nearby areas.
AC Repair Service Gastonia NC | GSM Services
Heating & Cooling • Insulation • Crawlspace Services • Mold Removal • Energy Audits • Generators • Air Duct Cleaning • Furnace • HVAC Repair & Installation
Heating & Cooling • HVAC • Insulation • Crawlspace Repair • Mold Removal • Energy Audits • Generators • Vent & Duct Cleaning
Deals & Specials
Service Cost Calculator

Cornelius, NC Home Services & HVAC

AC Repair, Air Conditioning Installation, HVAC Duct Cleaning, Insulation, Mold Removal & Crawlspace Service Experts in Cornelius, NC

GSM Services has set itself apart with superior customer service, reliability, and quality of work for over 97 years in Cornelius, NC!

We are your one stop shop for home comfort solutions. We're a licensed & insured heating & air conditioning contractor, hvac duct cleaning, crawl space experts, & insulation pros in Cornelius. We help people live better through improved home comfort, air quality, and energy efficiency.

If you are in need of repair, installation, tune up, or any other heating & cooling, crawl space, insulation, home mold solutions, or air duct cleaning services you are in the right place!

Get an Online Quote for HVAC Installations & Duct Cleaning Services in Cornelius

Try our free, online price calculators. Get a quote for your home in 30 seconds!

We Offer The Following Home & HVAC Service Calls in Cornelius, NC

AC Repair, Installation & Service Company in Cornelius, NC:

Here at GSM Services, our skilled technicians can inspect your heating & cooling system and provide options to service, repair or replace your HVAC system and keep your home comfortable. We service all brands and models of Air Conditioning systems.

We Service, Repair and Install all Types of Heating & Air Conditioning Systems

  • Central Air Conditioning Systems
  • Ductless Air Conditioning
  • Package Systems
  • Heat Pump Systems
  • Gas furnaces
  • Oil furnaces
  • Electric Furnaces
  • Propane furnaces

AC Installation & HVAC Replacement Experts

If your Air Conditioning is old or your bills seem too high, replacing your AC may be the best option. Our certified and highly trained team of AC installation professionals can provide a thorough inspection of your unit to help you make that decision. Our skilled experts can replace all types of HVAC systems with high-quality and energy efficient models that are guaranteed to lower your energy bills by as much as 30%. Trust our Air Conditioner installation professionals to provide you with reliable services every step of the way. Call or click today to schedule your FREE AC installation estimate!

Cornelius's Dependable Home Insulation Professionals

We specialize in a variety of home insulation services that are aimed to lessen your home's carbon footprint and save energy and money each month! We offer it all, from air sealing to ductwork to various types of insulation services such as blown in fiberglass, cellulose, injection foam, and more in Cornelius, NC. We understand that you need to use the correct type of insulation in your home, and it needs to be placed in the correct areas.

Before we perform any insulation work in your home, we first take the time to conduct a custom home energy audit. The audit is used to figure out what the root cause of your energy woes, and gives us an idea of what the best method would be to fix it. At GSM Services, we not only test and investigate your home's energy usage, but we will discuss and prioritize the proper repairs. You'll know which ones will save you the most energy and why. This will also help direct you in making the best decision for you and your family.

Types of Insulation
  • Blown-in Fiberglass
  • Blown-in Cellulose
  • Rigid Foam
  • Injection Foam
  • Radiant Barrier
  • Sealing Air Leaks
  • Air Duct Sealing
Areas of Home
  • Attic Insulation
  • Basement Insulation
  • Crawl Space Insulation
  • Garage Insulation
  • Wall Insulation
  • Floor Insulation
  • Ductwork Insulation

Crawl Space Service & Repair Experts

Welcome to GSM Services – the leading experts in crawl space restoration and repair. Is your crawl space causing issues such as moisture, mold, or structural damage? Don't worry; you're in the right place. We specialize in turning crawl space nightmares into healthy, functional, and energy-efficient spaces. We offer FREE Crawl Space Inspections. 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. Some of the crawl space services we offer are Whole Home Dehumidifiers, Crawl Space Encapsulations, Vapor Barrier, Crawl Space Insulation, Crawl Space Cleaning & Air Sealing, Sump Pumps, Crawl Space Mold Removal, Crawl Space Door Replacements, and much more. Schedule your Free Inspection today!!

Home Energy Audits

Our team of certified home energy specialists take the time to carefully examine your entire home, attic, & crawl space during the comprehensive home energy audit. They will identify the areas that need improvement to help improve your home comfort, air quality, & energy efficiency. Once we complete the audit, we will sit with you and show you exactly what was found and give you a prioritized list of improvements (if needed). Our custom home energy audits allow us to help homeowners improve the overall energy efficiency, air quality, health & comfort of their homes and can help save money!

Energy Audits Include:

Photo Galleries From Cornelius

Super attic. Cooler in summer, warmer in the winter.

News & Events From from Cornelius
Start 2017 with saving Energy, Money, & the Planet!

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]

Is a wifi thermostat right for your home?

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]

Save Energy on Heating with This List

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]

More News & Events
Work Requests From Cornelius, NC
  • Project Location: Cornelius, NC
    AC not keeping up. Cold air is not coming out.
  • Project Location: Cornelius, NC
    Looking to lower energy bills and have better air flow in certain areas of house.
  • Project Location: Cornelius, NC
    I have uneven heating and cooling in my home. Also have "stale" smells in certain places. Need thermostats updated so I can control them all remotely. I have 7 or 8 A/C units - 12000 sq ft home. I'd like a Home Energy audit. Best dates will be early in the week of 6/25.
  • Project Location: Cornelius, NC
    Would like spray insulate the walls of my. Home it's hot in the summer cold in the winter.
  • Project Location: Cornelius, NC
    Want to add extra insulation in our attic space. House is 2 years old and is all one level.
  • Project Location: Cornelius, NC
    Need my AC serviced not cooling adequately.
  • Project Location: Cornelius, NC
    Quote please. Whole house air cleaner.
  • Project Location: Cornelius, NC
    We have 2 rooftop HVAC units and are looking for a quote for annual maintenance.
  • Project Location: Cornelius, NC
    Do you do whole house surge protectors? We have one you installed for the HVAC but was wanting to know about protecting the whole house. Thank you Cecelia
  • Project Location: Cornelius, NC
    House take a long time to cool and does not stay cool long. There are also uneven temps in rooms. I would like an energy audit to determine what can be done to lower a/c costs and make the house more comfortable.
  • Project Location: Cornelius, NC
    Our upstairs air conditioner is not working properly.
  • Project Location: Cornelius, NC
    Cold air coming in from around fireplace and some outlets. I have high ceilings and gas heat; can't seem to keep my living areas warm enough.
  • Project Location: Cornelius, NC
    Vapor barrier not working well. Would like to seal off crawl space.
  • Project Location: Cornelius, NC
    We just bought a home and it is very drafty. Looking for a company to assess where we are losing heat
  • Project Location: Cornelius, NC
    I recently purchased a home built in 1970. I know that I need to add additional insulation to my attic space, but I'm also interested in a home energy inspection.
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 repair
  • ductwork installation
  • ductwork cost
  • furnace ductwork
  • HVAC ductwork
  • duct cleaning
Dryer Vent Cleaning
  • dryer vent cleaning services
  • dryer vent replacement
Before and After Pictures from Cornelius

Furnace PTU - Cornelius NC

Company Awards

2023 Community Choice Award Winner - Best of Gaston

2023 Community Choice Award Winner

GSM Services was voted Best Heating & AC Company & Best Home Service Company in the county.

2022 Best of Gaston

Best of Gaston 2022

GSM Services won Best Heating & Cooling Company, Top Place To Work, & Best Home Service Company

Best Contractor to Work For

2021 Best Contractor to Work For - ACHR News

GSM Services was named 2021 Best Contractors to Work for by National ACHR News

2021 Best of Gaston

Best of Gaston 2021

GSM Services won Best Heating & Cooling Company, Top Place To Work, & Best Home Service Company

Best of Gaston 2020

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

Top Place to work Charlotte 2019

GSM was voted as one of the top places to work in 2019 by the Charlotte Observer.

2019 Best of Gaston

Best of Gaston 2019

Best of Gaston 2019 Winner for Best Heating & Air Conditioning Company and also Best Home Repair Company

Recent Jobs and Reviews in Cornelius, NC

Job Locations and Reviews

Gutter Call, Installation of downspouts into guttering system
Gutter Call, Installation of downspouts into guttering system
Install T.
Install T. Checked in
Gutter Call, Installation of downspouts into guttering system
Cornelius, NC 28031
Mini Split Call, Performed an installation of a Mitsubishi Mini Split system
Mini Split Call, Performed an installation of a Mitsubishi Mini Split system
Install T.
Install T. Checked in
Mini Split Call, Performed an installation of a Mitsubishi Mini Split system
Cornelius, NC 28031
Furnace Call, Performed a changeout of both furnace and AC units.
Furnace Call, Performed a changeout of both furnace and AC units.
Install T.
Install T. Checked in
Furnace Call, Performed a changeout of both furnace and AC units.
Cornelius, NC 28031
Gutter Cleaning Call, Preformed Gutter Cleaning
Gutter Cleaning Call, Preformed Gutter Cleaning
Install T.
Install T. Checked in
Gutter Cleaning Call, Preformed Gutter Cleaning
Cornelius, NC 28031
Cornelius, NC - Furnace Installation. Crawl Space repair. Crawl Space encapsulation.
Install T.
Install T. Checked in
Furnace Installation. Crawl Space repair. Crawl Space encapsulation.
Cornelius, NC 28031