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Products & Services

HVAC Systems
air conditioning contractors
air conditioning systems
boiler heating systems
central air conditioning
ductless air conditioning
gas furnace
geothermal heating and cooling
heating and cooling systems
high efficiency furnace
home heating systems
hvac companies
hydronic heating systems

Crawl Space Insulation

Home Energy Saving & Audit
energy efficiency audit
energy saving devices
energy saving products
energy saving tips
home energy audit
home energy conservation


Home Insulation
attic insulation
blown in insulation
cellulose insulation
duct insulation
green insulation
insulation contractors
pipe insulation
reflective insulation
rigid foam insulation
roof insulation
wall insulation
window insulation

Water Heaters
gas water heaters
high efficiency water heater
hot water heaters
indirect water heater
instant hot water heater
on demand hot water heaters
solar water heater
tankless water heaters
water heater installation
water heater replacement

Air Sealing
sealing air leaks
air duct leakage
air duct sealing
air leakage testing
door air seal
window air leakage

Radiant Barrier
radiant barrier insulation
radiant barrier cost
roof radiant barrier

ductwork repair
ductwork installation
ductwork cost
furnace ductwork
hvac ductwork
Duct Cleaning

Company Awards
GSM Services was chosen by its employees as a top workplaces winner among Charlotte-area companies.... [Read more]
Recognized as the Best of Gaston 2017 for the following categories: # 1 in Heating A/C Services # 1 in... [Read more] [Read more]
More Awards

Heating, Air Conditioning & HVAC Repair & Insulation Company Serving Mooresville, NC

Happy Customers Surrounding Mooresville, NC
Work Requests

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Mooresville's Furnace Repair Experts

There are many reasons why your home’s heating system or furnace may not be working like it should (or working at all). Regular maintenance is important to prevent problems with your heating system and to keep your home comfortable and your energy costs low. Here at GSM Services, we can evaluate your current heating system and provide a fast quote to get your furnace running like new. We provide repair and maintenance services for oil, electric, gas, and propane furnaces.

Furnace Installation & Replacement

Is it time for a new furnace? Furnace replacement will be necessary if a major problem develops – such as a cracked heat exchanger. GSM Services is your local expert for heating system replacement. Before we replace your existing furnace, we will thoroughly inspect your heating system. If you require a new furnace, we can install a heating system that's right for you.

We install a variety of types of furnaces:

  • Gas furnaces
  • Oil furnaces
  • Electric furnaces
  • Propane furnaces
  • Heat pump systems

Schedule a FREE Estimate!

Insulating Your Mooresville Home

We specialize in a variety of home energy improvement services that were 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, spray foam, injection foam, and more in Mooresville, 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

Heating & Air Conditioning Repair, Installation & Maintenance Service Contractor 

As Mooresville's trusted air conditioning and heating systems repair contractor, you can rest assured that we will get the job done right the first time! Since 1927, we have repairing homeowner's heating and air conditioning systems 

If you feel that your home's HVAC system is not working as it should, we can fix that. We offer maintenance, repair, and installation services of all kinds of heaters. Did you know that having an efficient heating unit will not only help keep your home warmer in the winter months, but can greatly improve the air quality of your home?  

Along with heating repair, we also offer a wide variety of air conditioning system services. Having heat is a necessity for home owners in the Greater Charlotte area, especially in the winter.  Our team of HVAC repair & service professionals can replace any heating system from furnaces to boilers and oil to gas and electric heaters, so no matter what sort of heating your home uses, we can make your you're never left out in the cold.

  • Gas Furnace
  • Oil Burners
  • Geothermal
  • Electric Furnaces
  • Heat Pumps
  • Wood Heating
  • Forced Air Heaters
  • Gas Boilers
  • Oil Boilers
  • Hot Water Heater
  • Tankless Water Heaters 
  • Central Air Conditioning
  • Ductless Air Conditioning
  • Evaporative Air Conditioning
  • AC Repair & Installation
  • Dehumidification
  • Heat Pumps
  • Ductwork Cleaning
  • Ductwork Sealing 
  • Ductwork Repair
  • Air Purification

Comprehensive Home Energy Audits

Our team of home energy take the time to carefully examine your home and can provide comprehensive home energy audits that identify the areas that need improvement. Once we finalize the test, we will sit with you and show you exactly what was found and giving you a prioritized list of list of home energy tasks. Our custom home energy audits allow us to help homeowners improve the overall energy efficiency of their home's and can help save you money!

Evaluations Include:
  • Air Leak Inspection 
  • Thermal Scanning
  • Detailed Explanation    

  • Blower Door (Infiltrometer) Test
  • Insulation Level Check
  • Appliance & Lighting Checks

Schedule a FREE Estimate!

Crawl Space Insulation Experts

Is there moisture in your crawl space? Does your home have proper crawl space insulation? Even if you think your crawl space has enough insulation do not hesitate to contact us. We have a team of crawl space moisture and insulation experts that will give you peace of mind when it comes to your crawl space. It is always better to have too much insulation than to have a space without any insulation at all. Crawl space insulation is very important to the efficiency of your entire home due to the fact that moisture in your crawl space can also lead to rot, structural issues, and health concerns. Don't let moisture in your crawl space plague your home. Contact us today to learn more about our crawl space moisture solutions!

News & Events From from Mooresville
This is the question that most homeowners don't want to think about. No one wants to think about their air conditioning going out during the middle of summer or their heat going out on below freezing days. Read below on ways we can help you out in the long run.... [Read more]
Work Requests From Mooresville, NC
Harrison Point Ct in Mooresville
Upstairs Ac unit is not cooling Additional information: Date requested: 02/23/2018
Powder Horn Rd in Mooresville
I'm the listing agent on this home, it's under contract and the home inspection showed high moisture levels in the crawl space. There is no standing water under the home and we are needing a quote for the encapsulation of the crawlspace.
Montibello Dr in Mooresville
We will be building a home in Mooresville within the next 2 years. We just bought property. We have been interested in the benefits of geothermal energy. I'm interested in estimated cost, etc. The best time for me to speak to someone is between 4-5pm Thank you.
Timberland Loop in Mooresville
Need to weather proof new home. Construction was completed this year but windows doors are not weather tight. I have many large windows and I suspect many of them need resealing. One leaks when it rains. Garage door is also not weather proof. I can see light rays when it's closed and insects have been finding their way in. Can also see small space at door corner when back door is completely shut.
Bridgeport Dr in Mooresville
I believe our attic is poorly insulated - to the point where our upstairs dedicated HVAC cannot keep it cool (the HVAC was recently serviced, and is in good working condition). We would like to get an evaluation and estimate. Thank you!!
Dawson Downs Lane in Mooresville
My craw space is tore underneath. Could you please tell me how much will it cost to replace the whole thing? Is it free for them to come out here to do a estimate? Thank you
Yellowbell Rd in Mooresville
Looking at spray foam insulating 2-3 interior walls to reduce sound. Looking to get a ballpark figure of cost. Ty
Gibbs Rd in Mooresville
We have some cold air coming in, seems, from bottom of walls? would like to stop this, is not noticeable except in the colder months
Vista Bluff Lane in Mooresville
This home is new construction - we are under contract to purchase this home and wanted an estimate on crawl space sealing. It has engineered bamboo floors installed and they have started to "cup" on the first floor. The humidity seems to be high in the crawl space and could be attributing to the floor issues. There is a vapor barrier and crawl space vents with a wooden door to access the crawl space. The air handler down there seems to have an unusual amount of condensation for a crawl space unit. We have friend in Brevard, NC that own a business sealing crawl spaces and they highly recommend we get it looked at. Thank you - Brian
N Ranney Way in Mooresville
I have a two story home and for years the bedroom that leads to the attic is always very hot or very cold depending upon the time of year. I am looking to fix this and all the reading I have done suggests I need to upgrade the insulation in my attic. Because of this, I am looking to receive a quote to either upgrade or replace my attic insulation.
Riverwood Rd in Mooresville
Need vapor barrier repaired and most likely new gravel plus some down spout run off carriers extended or redirected.
Kenway Loop in Mooresville
We are looking to install an LP generator to our home and would like someone to come out and evaluate what we would need and give a quote. Saturday would ve the best day for us.
Windy Run in Mooresville
Interested in additional attic insulation for top story of house. MBR, office, and guest room are all below the roof- and run hot in summer and cold in winter. Please call 704.931.1081 to discuss project and suggest solution.
Elrosa Rd in Mooresville
We want someone to look at our system and see why the upstairs flow is not effective nor efficient. Uneven cooling. Our units are regularly cleaned and maintained.
S Church St in Mooresville
Like to get quote for insulating an attic
Tradition Lane in Mooresville
Attic insulation
White Oaks Rd in Mooresville
Uneven heat air in house due to attic
Coral Bells Court in Mooresville
We are in process of selling house, buyers inspection mentioned we should look to add insulation where needed. Would like to have someone come out and discuss. Ideally would like to have someone out quickly. Thanks
Kemp Road in Mooresville
I would like to schedule for an estimate to insulate my crawl space.
Colborne Dr in Mooresville
Looking to install a ductless AC unit to supplement the Central AC mainly for the Master Bedroom.