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HVAC Systems
air conditioning contractors
air conditioning 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

Concord's Leading Furnace Installation & Repair Contractor

"I can "Feel" the results after my crawl space enclosure."...
Happy Customers Surrounding Concord, NC
Work Requests

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Reviews From Concord
Testimonials From Concord
You have the highest quality people working for you-They reflect you well!
Testimonial by Jim A. from Concord, NC

Concord'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 Concord 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 Concord, 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 Concord's trusted air conditioning and heating systems repair contractor, you can rest assured that we will get the job done right the first time! We have been in business since 1927 and repairing homeowner's HVAC 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 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
  • 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!

Work Requests From Concord, NC
Old Cedarwood Dr NW in Concord
My wife and I are ready to have insulation blown in to our attic and would like to see if your services are available and if they fit in our budget. We have a 1700 sq. ft. ranch home in Concord, built in 1973. We purchased the home and moved in 1 year ago. The insulation in the attic is very compacted and in rough shape due to various pests and work that has been done in the attic over the last 45 years. You can clearly see all the joists despite the insulation. Ideally, we would feel better if the old insulation is removed, and all new insulation is installed to the appropriate depth. We would also like an attic door tent, and potentially a second attic access installed in the garage. We have cash in hand and are looking to have this completed sooner than later. Please let me know if you think you can help us. Thank you, Kyle
Fleetwood Dr Sw in Concord
Would like spray insulate the walls of my. Home it's hot in the summer cold in the winter.
Brook Valley Ct. NE in Concord
Under house
Braughton Ave in Concord
I'm looking for an estimate for a home energy audit. Thank you.
Warren Coleman Blvd. in Concord
Need bid on replacing 2 systems. One 5 ton and one 10 ton.
Walkers Glen Drive NW in Concord
Moving into a townhouse and the previous owners had a dog and rarely cleaned. They were there 6 years.
Mt Pleasant Rd S in Concord
Heat is not working Additional information: Date requested: 12/10/2017
Deerwood Pl Nw in Concord
I would like to get a quote on attic insulation.
Sandy Point Dr SW in Concord
Looking to have radiant barrier installed in attic on a 1450 square foot home
Winterberry Ct NW in Concord
Insulation in attic(blown-in type) not upgraded since 1994..need a tax break for this year...
Spring Gate Court in Concord
Replace flex duct to one bedroom. Evaluate if something other than flex duct can be run.
Giverny Court in Concord
Interested in getting estimate for insulation work in detached garage with living space on second floor PLUS need HVAC system for that space checked out.
Galloway Lane SW in Concord
According to our home builder (Ryan Homes) we need a dehumidifier in our finished basement (2 rooms, about 500 sq') due to moisture just above the floor in a 3-4' section, and an A/C ceiling vent showing moisture and minor staining around it. We are also concerned why it is several degrees warmer upstairs than in the basement or main floor. If your Company does it, we are also interested in semi annual inspections of our heating and cooling systems to make sure they are functioning optimally. Thank you.
Lomax Ct SE in Concord
I have recently had an insulation installed in my attic from EnergESquad. The same thing fire fighters use to protect themselves. The same lining in pizza home delivery bags. But I can no longer find them. Can you help?
Wind Song Ct in Concord
I go through this every summer - the AC can not keep up with the outside heat - especially in the front part of the house (uncomfortable). I want an energy (system) evaluation and see what we can do to make home more comfortable.
in Concord
We'd like an estimate on attic insulation.
Edgewood Ave NE in Concord
The house has drafts and air seal issues. I was wondering what can be done and how much it would cost. Thanks, Greg
Spring St in Concord
100 year old house.. celluose wall installation and attic HVAC review
Beacon St in Concord
Would like info on blown insulation in existing walls and air sealing.
Channing Circle NW in Concord
We are currently having issues with our current gas furnace and are in need of a replacement system asap. We are exploring alternative options and their comparable costs. If someone could contact me tomorrow about cost option i would appreciate that very much. Thanks