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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

Before and After Pictures from Fort Mill
New Gas Heating and Air Conditioning system in Fort Mill

New Gas Heating and Air Conditioning system in Fort Mill

Before After
New Gas Heating and Air Conditioning system in Fort Mill New Gas Heating and Air Conditioning system in Fort Mill

GSM installed a new gas heating and air conditioning system with new metal duct work.

Company Awards

Fort Mill's Leading Heating, Air Conditioning & HVAC Repair & Insulation Contractor

Happy Customers Surrounding Fort Mill, SC
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Reviews From Fort Mill
Testimonials From Fort Mill

Fort Mill'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 Fort Mill 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, injection foam, and more in Fort Mill, SC. 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 Fort Mill'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 Fort Mill
This is the question that most homeowners don't want to think about.  No one wants to think about their...
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]
Home improvements are a great way to start off your new years resolution of
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]
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]
Work Requests From Fort Mill, SC
Pleasant Rd. in Fort Mill
We had a house fire 5 months ago...we replaced the entire roof... 900 sq foot ranch house made in 1965. We put in a new vaulted ceiling in the kitchen and living room... currently we have NO insulation in the attic - roof area. I would like an estimate on doing our attic and roof insulation. We are in Fort Mill, SC Thanks a lot. Ray
Apple Valley Way in Fort Mill
Reduce heat in attic to help preserve HVAC System. Also to insulate attic door and other insulation areas.
Felts Pkwy in Fort Mill
I think the fan motor is going out in my AC unit.
Karley Ct in Fort Mill
Would like to keep attic space cool and make an additional living space.
Suwarrow Circle in Fort Mill
Air duct sealing and cold/hot spots in the house.
Shady Grove Crossing in Fort Mill
Need to get filters installed. I thought I had a service agreement.
Preswick Dr in Fort Mill
Insulation for eve in finished room above garage. Desire to moderate the temperature in both winter and summer.
Fern Run Ct in Fort Mill
Duke Energy referred me to you for a new AC install. I would like to speak with someone at my house about options and an estimate. Please contact me as soon as possible as I would like the install to be completed in the next few weeks. Thank you very much.
Clems Branch Rd in Fort Mill
Finishing my basement.
Whispering Oaks Lane in Fort Mill
We have a Trane system, and this morning the heat indicated "On" on the thermostat, but the unit wasn't running. After a couple hours, the heat did actually come on, but would like a service visit, and your company was highly recommended. I have not yet looked at the codes to see what the issue was, that's on my to-do list :) Let me know if you are available for a service visit. thanks Kerry Simpkins
Gold Rush Ct in Fort Mill
We have a Generac 25KW installed at our former home in Chester, SC and we need to have moved to our new home in Tega Cay, SC. This would include removing it, transporting it to Tega Cay, reinstalling it and servicing the unit. The Generac is relatively new, having been installed in February 2016. Please let me know if you have do this project. Thanks
Ashley Arbor in Fort Mill
Have bought this house about a month ago and would like to get all the duct work in attic replaced - thank you, noble
Benedict Place in Fort Mill
I need to have the attic insulation evaluated.
Blandina Ct in Fort Mill
I'd like a quote on two projects: 1. Cleaning our air ducts (we have 15 ceiling and floor vents, and 2 return vents), from an electric heat pump that's located in our crawlspace 2. Moisture control and air sealing of crawlspace: we have a poor plastic vapor barrier and floor joint insulation, but high humidity and moisture wicking up into the concrete block foundation has led to the insulation dripping off and minor mold spots in a couple of places. I'd like to control moisture and insulate the floor/improve energy efficiency with our heat pump. I'd specifically like to know about the option for open or closed cell spray foam along the foundation walls and a new vapor barrier. I don't know that I want to encapsulate the crawlspace -- just protect the heat pump and keep the house interior tight and energy efficient. Thanks for any guidance! -- Patricia
Sooner Lane in Fort Mill
Our heating has a weird smell when we turn it on, and our upstairs loft and bathroom fans don't seem to be working
Potter Place Rd. in Fort Mill
I live in a townhouse and the wall between us seems to be very thin. I can hear the surround sys. I hear them talking from the next door townhouse. I cant hear what they are saying but still. I hear them walking on their wood floors. I would like a free estmate,
Oleander Branch Ct in Fort Mill
AC seems to be not generating cold air Additional information: Date requested: 09/29/2017
Molokai Drive in Fort Mill
Just need service for winter
Warpers Lane in Fort Mill
There is brown water stain around the air vent in our kitchen. Need diagnosis to identify where the leak is coming from. The house is a one story with an attic above.
Talon Point Circle in Fort Mill
Looking to get an estimate for insulating a walk out basement
Serving the following Fort Mill, SC zip codes
29707, 29708, 29715, 29716