AC Installation & Repair, HVAC Duct Cleaning, Insulation, Mold Removal & Crawlspace Service Experts in Mount Holly, NC

For over 98 years, GSM Services has made home comfort easy with trusted service, reliable solutions, and top-quality work in Gaston County. As a locally owned, licensed, and insured home comfort expert, we provide heating & cooling, insulation, air duct cleaning, and crawlspace services to improve comfort, air quality, and energy efficiency. Enjoy easy online booking, instant quotes, and free service calls with any repair!

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Duct Cleaning and HVAC System Cost in Mount Holly, NC

Need a new air conditioning system or duct cleaning services? Get a free instant quote online in just 30 seconds!

HVAC INSTALLATION

DUCT CLEANING

DRYER VENT CLEANING

Heating & Cooling Services in Mount Holly, NC:

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Crawl Space Services, Insulation & Other Home Comfort Services Offered in Mount Holly, NC:

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AC Installation Experts

GSM Services specializes in energy-efficient heating and cooling system installations that enhance your home's comfort and save on energy costs. Our certified professionals ensure a smooth, reliable experience from start to finish. Book a FREE consultation online in seconds to explore ultra-quiet, high-efficiency systems that boost comfort, improve air quality, and lower energy bills. With clear pricing, flexible financing, and industry-leading warranties, upgrading your heating system has never been easier!

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Air Conditioning Service & AC Repair in Mt Holly, NC

At GSM Services, our certified HVAC technicians inspect, service, repair, and replace all heating & cooling systems, any brand or model. Need a furnace repair? We'll waive the $69 diagnostic fee with your repair! Our licensed experts offer fast, affordable service, pinpointing issues with thorough inspections. Enjoy free service calls with repairs, upfront written estimates, and no surprises. All repairs come with outstanding warranties for your peace of mind.

Mount Holly's Crawl Space Pros

Struggling with moisture, mold, or damage in your crawl space? We’re here to help! Our experts transform crawl spaces into healthy, energy-efficient spaces. Get a FREE Crawl Space Inspection today! We will check the humidity level, look for any mold or growth, inspect your home's insulation and air duct system, air leakage, air quality and more! We can provide you different solutions to create a healthy, comfortable, and safe environment under and inside your home.

Crawl Space Services We Offer:

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Home Insulation Company in Mt Holly, NC

We offer many insulation services such as insulation removal & insulation installation. As a full-service insulation contractor, GSM Services provides services to improve areas such as walls, crawl spaces, basements, and garages.

If you are in need of insulation services, let us perform a free inspection at your home! We will check the insulation levels, moisture levels, check for air leaks, inspect duct work, look for any growth, issues and more! We will take pictures of any concerns and give you a free, no obligation quote to offer solutions. At GSM Services, we are Mount Holly's trusted, local insulation company.

Types of Insulation

Blown-in Insulation
Cellulose
Foam
Injection Foam
Radiant Barrier Insulation
Sealing Air Leaks
Air Duct Sealing

Areas of Home

Attic Insulation
Basement Insulation
Crawl Space Insulation
Garage Insulation
Wall Insulation
Floor Insulation
Ductwork Insulation

Expert Duct Cleaning in Mount Holly, NC:

Our duct cleaning services thoroughly clean your entire duct system—not just the air vents—to ensure optimal air quality and system efficiency. We start with a full inspection, checking for tears, leaks, or any issues that could affect performance. Our comprehensive cleaning service includes a special disinfectant spray treatment to leave your ducts fresh and sanitized. Get a free, instant online quote in seconds and breathe cleaner air with our professional duct cleaning services!

Photo Galleries From Mount Holly

High efficiency GSM TruComfort air conditioner installation.

Trucomfort hybrid split system installation

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

Project Location: Mount Holly, NC
Dryer isn't drying well, but it gets hot. Thinking I may need to have the dryer vent cleaned. Thanks! Additional information: Date requested: 09/08/2021
Project Location: Mount Holly, NC
We would like to start having regular cleaning and maintenance.
Project Location: Mount Holly, NC
Looking for a spray foam quote in attic space. Also, the removal of current blown fiberglass.
Project Location: Mount Holly, NC
1. Regular service - need filter replaced in my AC unit. I would like to set up the ESA for tune-ups in spring/summer and fall/winter for 2020. Service tech will require a ladder as my unit is in my attic. 2. AC is struggling to cool the past few days. Would like it inspected as part of regular service. Would like to set up inspection for Monday 6/8 in the afternoon or Wednesday 6/10 in the morning. Additional information: Date requested: 06/08/2020
Project Location: Mount Holly, NC
Summer tune up
Project Location: Mount Holly, NC
Would like to get a quote for replacing a 5 ton heat pump at our shop facility.
Project Location: Mount Holly, NC
HEATING SYSTEM WON'T COME ON
Project Location: Mount Holly, NC
I need a air conditioner for our half basement
Project Location: Mount Holly, NC
Air-conditioning fan on outside unit will turn on but no air is coming through vents inside the house
Project Location: Mount Holly, NC
Two units upstairs aren't cooling
Project Location: Mount Holly, NC
Need new equipment for HVAC on main level of home
Project Location: Mount Holly, NC
I need someone to come and service my Mitsubishi outside unit. I believe there might be a leak.
Project Location: Mount Holly, NC
Would like estimate on replacing existing AC
Project Location: Mount Holly, NC
Heat pump is functioning but makes a lot of noise that's audible from inside the wall. Does not make noise when just the fan is running. Additional information: Date requested: 03/14/2019
Project Location: Mount Holly, NC
Interested in a quote for a whole house standby generator.
Project Location: Mount Holly, NC
Looking at replacement HVAC system
Project Location: Mount Holly, NC
Need the furnace replaced for the bonus room over the garage. The a/c part of the unit still works. thanks!
Project Location: Mount Holly, NC
Need quote for new HVAC. Current system won't cool when outside temp is above 80.
Project Location: Mount Holly, NC
My AC unit iced over. Additional information: Date requested: 06/25/2018
Project Location: Mount Holly, NC
Bonus room surrounded by attic space. Room temp climbs to upper 70's when outside temp gets to upper 80's. Air temp coming out of vents is 58-59 at night but climbs to 68-70 once outside temp gets to upper 80's. Concerned about duct leakage and general temp and ventilation of attic.