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Reviews From Shelby
Products & Services

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
air conditioning installation
air conditioning repair

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

Dryer Vent Cleaning

Before and After Pictures from Shelby
Heating System Precision Tune Up

Heating System Precision Tune Up

Before After
Heating System Precision Tune Up Heating System Precision Tune Up

Our Service Advisors work hard to keep you comfortable! We thoroughly clean and service your system to bring it back to life.  Regular maintenance extends the life of your heating system.


HVAC Install in Shelby, NC.

HVAC Install in Shelby, NC.

Before After
HVAC Install in Shelby, NC. HVAC Install in Shelby, NC.

AC & Furnace Replacement in Shelby, NC 


Company Awards
Best of Gaston 2020
GSM Services was incredibly honored to win multiple titles this year for the 2020 Best of Gaston Awards! Thank you... [Read more]
Top Place to work Charlotte 2019
GSM was voted as one of the top places to work in 2019 by the Charlotte Observer.... [Read more]
Best of Gaston 2019
We won Best of Gaston 2019 for Best Heating & Air Conditioning Company and also Best Home Repair Company by... [Read more]
More Awards

Established Energy Audit, Heating & AC Repair Contractor Serving Shelby, NC

I am very satisfied with your company, from the sales rep to the installers....
Happy Customers Surrounding Shelby, NC
Work Requests

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Fast & Affordable Heating Service Specialists in Shelby, NC

If your furnace won't turn on, if there's a leak, if the blower isn't working or if you want regularly scheduled maintenance, you are in the right place! GSM Services has a dedicated and devoted team of furnace service professionals with decades of combined experience. Our trained technicians can provide a prompt and thorough inspection of your unit to determine the problem and suggest the solution. Our furnace service team provides FREE written estimates for all potential furnace repairs so you will never be surprised by the bill. Also, we provide furnace service for all types and models, including natural gas, oil, electric and propane. Don’t hesitate to contact us today, call or click to schedule your furnace service appointment with GSM Services!

Benefits of regular furnace service:

  • Optimal home comfort
  • Reliable performance
  • Better furnace efficiency
  • Extended life
  • Lower repair costs & increased energy savings

Proven Furnace Installation Experts

If your furnace is old or your bills seem too high, replacing your furnace will be the best option. Basic usage compromises your unit over time and keeping a damaged or old furnace may be costing you more money than installing a new unit. Our certified and highly trained team of furnace installation professionals can provide a thorough inspection of your unit to help you make that decision. Our skilled experts can replace all types of units with high-quality and energy efficient models that are guaranteed to lower your energy bills by as much as 30%. Trust our furnace installation professionals to provide you with reliable services every step of the way. Call or click today to schedule your FREE furnace installation estimate!

We install a variety of types of furnaces:

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

Shelby'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 Shelby, 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 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!

Air Conditioning Repair, Installation, & Service Company

Here at GSM Services, our skilled technicians can inspect your air conditioning system and provide the right services to prolong the life of your cooling system and keep your home comfortable. We provide repair and maintenance services for all brands and models of central and ductless air conditioners.

Our Air Conditioning Services Include:

  • Air conditioning tune-ups & maintenance
  • Air conditioning repair
  • Air conditioning system replacement
  • Refrigerant replacement
  • Thermostat repair & replacement
  • Ductless air conditioning
  • Central air conditioning

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
Case Studies From Shelby
GSM Services recently did a job at a home in Shelby, NC. The coworkers involved on this project were Shane Groves, Shawn Messer, Owen Driscoll,...
News & Events From from Shelby
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]
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]
We Fix Uncomfortable Homes!
What Is a Home Energy Audit? A home energy audit is a service provided by GSM Services to help you determine what you can do to make your home more efficient and help your AC and heating equipment to perform better. You get an assessment of your home, and you can get a custom plan for healthier air, energy savings, and comfort and most importantly, we will do this FREE to provide you the best options to improve your home comfort.... [Read more]
Work Requests From Shelby, NC
Project Location: Shelby, NC
Need to replace an existing broken mini split unit in a bonus room. I've already purchased the new unit and install kit of adequate size. It's a Pioneer 12K btu.
Project Location: Shelby, NC
My AC is blowing, but it is not cold. It has slowly gotten worse over the last few years. We had a repair man out a couple years ago (for another issue) and he said it would most likely need more R22. The unit is from 1980, and I know we need a new unit, but for right now we just need it repaired.
Project Location: Shelby, NC
My second story stays hot. Was needing to know what can be done to cool the entire house. I also wanting to see the cost of switching to electric heater.
Project Location: Shelby, NC
Need a new heating an air conditioner. It need to be up date it. An may need new duck work an air vents cut out in the floor agin do to they got covered up when the plywood was replaced
Project Location: Shelby, NC
Need a new heating an air conditioner. It need to be up date it. An may need new duck work an air vents cut out in the floor agin do to they got covered up when the plywood was replaced
Project Location: Shelby, NC
1800 sq ft attic insulation price?
Project Location: Shelby, NC
I need a new ac unit and also do u guys do payment plan on new ac units
Project Location: Shelby, NC
Air conditioner breaker keeps tripping. Unit will run big the air will not get cool
Project Location: Shelby, NC
The compressor on our hvac went out yesterday. We were told that they would either need to be replaced or the whole system would need to be replaced. It was originally installed in 2010. We need to get it working ASAP or get a new unit due to having two small children. We need to have it financed.
Project Location: Shelby, NC
Air not working . Circumstances: • when set to a specific temp; pump works outside but nothing inside. • when turned "off" in house; air blows inside and smells like something burning. • Currently all breakers are off and using window unit.
Project Location: Shelby, NC
Air is not getting cool
Project Location: Shelby, NC
Needing new HVAC system.
Project Location: Shelby, NC
We just bought this house in June and need to start having the hvac system service done to get ready for winter
Project Location: Shelby, NC
Looking to purchase generator with installation.
Project Location: Shelby, NC
Energy Efficiency.. attic insulation and duct work
Project Location: Shelby, NC
Project Location: Shelby, NC
We are in immediate need for a quote to add duct and HVAC to a new event center we are buying this week. Can we setup a time asap to meet and get a quote
Project Location: Shelby, NC
Request estimate on duct cleaning
Project Location: Shelby, NC
Downstairs of our house is very cold and drafty -- I'm wondering if it's an insulation problem?
Project Location: Shelby, NC
AC not working
Serving the following Shelby, NC zip codes
28150, 28151, 28152, 28150, 28151, 28152