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Products & Services

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

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

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 [Read more]
Outstanding Employer Award winner for the 2016 Governor's NCWorks Awards of Distinction... [Read more]
GSM Services was recognized as a community leader in partnership with The United Way of Gaston County The United Way of... [Read more]
More Awards

Air Conditioning, Heating, & Insulation Company Mount Holly, NC

We appreciate your good quality work.  We are well satisfied....
Happy Customers Surrounding Mount Holly, NC
Work Requests

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Reviews From Mount Holly
Testimonials From Mount Holly
We couldn’t be happier with all aspects of your company! Thank you ever so much!
Testimonial by The Browns from Mt. Holly, NC
Your two technicians who did the installing were very hardworking, very knowledgeable and also courteous.
Testimonial by Ms. Stroupe from Mt. Holly, NC
We had a great experience with GSM.
Testimonial by Kris V. from Mt. Holly, NC

Insulating Your Mount Holly Home

You can have a comfortable home while lowering your energy bills at the same time. Our professional crew knows the right insulation to install in the different areas of your home.

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 & HVAC Services

Old, failing Heaters and Air Conditioners are a serious issue in your home. We are your local experts for both repairing your current system or installing a new, energy-efficient unit.

  • 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

Home Energy Audits

Our professionals provide comprehensive home energy audits  identifying the areas of your Mount Holly home that need improvement, showing you exactly what was found and giving you a prioritized list of list of home energy tasks.

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

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

Get A FREE Quote Today!

Job Stories From Mount Holly, NC
New Installation Multiple Furnace Systems - Local Church

From residential to light commercial our residential heating and cooling division will help keep your home or business comfortable.  We recently completed a 5 unit furnace installation at a local Church in Mount Holly, NC. 


Give GSM a call for a free estimate for new installations on heating and cooling systems for light commercial and residential homes.

Work Requests From Mount Holly, NC
E Glendale Ave in Mount Holly
Need attic knee walls sealed and insulated.
Tom Sawyer Ln in Mount Holly
I have an island that is made for a downdraft cooktop; however, they never installed the ductwork. I need the ductwork put into the cabinet, a hole cut through the bottom of the island to the floor, and the duct ran approximately 10 feet to the outside of the home. Is this something that GSM can do?
Beach Bluff Drive in Mount Holly
Existing customer requesting service on AC. Customer's AC unit in basement is broken, the system shut down completely. Office will call customer back with service/scheduling information.
Farm Springs Dr in Mount Holly
Prior customer. Client said his residential air conditioner is not blowing cool air. No longer has contract with company
Wandering Wood Lane in Mount Holly
Caller looking for ac service. New customer. Provided contact information. Appointment set.

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