GSM Services

1535 W May Ave, Gastonia, NC 28052

698 Reviews

1 (704) 286-1644

Request a quote

About Us

Steven Long, Owner

GSM Services have been serving in the Greater Charlotte, NC area since 1927. This company provides HVAC, insulation, roofing, and generator assistance for residential and commercial properties. The most recent award was received for The Best of Gaston 2020: Best Place To Work, Best Heating & A/C Company, Best Home Repair Company, and Best Person of the Year (the owner, Steven Long)!

Services Provided

+Electrical
- Generator Installation & Replacement
- Generator Repair
+Energy Audit
- Blower Door Testing
- Home Energy Audit
+Heating & Air Conditioning
- Air Filter Replacement
- Central Air Conditioning Installation & Replacement
- Central Air Conditioning Repair & Service
- Dryer Vent Cleaning
- Duct & Ductwork Installation
- Duct Blaster Test
- Duct Cleaning
- Duct Insulation & Sealing
- Duct Repair
- Ductless/Mini-Split AC Installation & Replacement
- Ductless/Mini-Split AC Repair & Service
- Electric Baseboard Heating Installation & Replacement
- Electric Baseboard Heating Repair & Service
- Electric Furnace Installation & Replacement
- Electric Furnace Repair & Service
- Evaporative Air Conditioning Installation & Replacement
- Evaporative Air Conditioning Repair & Service
- Gas Boiler Installation & Replacement
- Gas Boiler Repair & Service
- Gas Furnace Installation & Replacement
- Gas Furnace Repair & Service
- Heat Pump Installation & Replacement
- Heat Pump Repair & Service
- Hot Water Baseboard Heating Installation & Replacement
- Hot Water Baseboard Heating Repair & Service
- Infrared Heating Installation & Replacement
- Infrared Heating Repair & Service
- Oil Boiler Installation & Replacement
- Oil Boiler Repair & Service
- Oil Furnace Installation & Replacement
- Oil Furnace Repair & Service
- Oil To Gas Conversion
- Propane Boiler Repair & Service
- Propane Furnace Installation & Replacement
- Propane Furnace Repair & Service
+Insulation
- Air Sealing Services
- Attic Hatch Insulation Installation & Replacement
- Attic Insulation Installation & Replacement
- Blown-In Insulation Installation & Replacement
- Cellulose Insulation Installation & Replacement
- Crawl Space Insulation Installation & Replacement
- Fiberglass Insulation Installation & Replacement
- Floor Insulation Installation & Replacement
- Foam Board Insulation Installation & Replacement
- Garage Insulation Installation & Replacement
- Injection Foam Insulation Installation & Replacement
- Mineral Wool Insulation Installation & Replacement
- Radiant Barrier Installation & Replacement
- Roof Insulation Installation & Replacement
- Spray Foam Insulation Installation & Replacement
- Wall Insulation Installation & Replacement
+Renewable Energy
- Geothermal System Installation & Replacement
- Geothermal System Repair & Adjustment
+Roofing
- Asphalt Shingle Roof Installation
- Asphalt Shingle Roof Repair
- Asphalt Shingle Roof Replacement
- Attic Fans
- Cedar & Wood Shingle/Shake Roof Installation
- Cedar & Wood Shingle/Shake Roof Repair
- Cedar & Wood Shingle/Shake Roof Replacement
- Cedar & Wood Shingle/Shake Roof Ventilation
- Clay/Concrete Tile Roof Installation
- Clay/Concrete Tile Roof Repair
- Clay/Concrete Tile Roof Replacement
- Clay/Concrete Tile Roof Ventilation
- Composite Roof Installation
- Composite Roof Repair
- Composite Roof Replacement
- Copper Roof Installation
- Copper Roof Repair
- Copper Roof Replacement
- Corrugated Roof Installation
- Corrugated Roof Repair
- Corrugated Roof Replacement
- Energy-Efficient Shingle Roof Installation
- Energy-Efficient Shingle Roof Repair
- Energy-Efficient Shingle Roof Replacement
- Flat Roof Installation
- Flat Roof Repair
- Flat Roof Replacement
- Hail Damage Repair
- Metal Roof Installation
- Metal Roof Repair
- Metal Roof Replacement
- Roof Ventilation
- Rubber Roof Installation
- Rubber Roof Repair
- Rubber Roof Replacement
- Slate Roof Installation
- Slate Roof Repair
- Slate Roof Replacement
- Solar Shingle Roof Installation
- Solar Shingle Roof Repair
- Solar Shingle Roof Replacement

Company Highlights

Insured
In business since 1927
Residential & commercial services

Submit a review

Reviews
Testimonials
Before & After
Photos
Awards
Affiliations

By Christopher

Service was great.

By Steve

Great service at all three of our homes and businesses

By Constance

I would prefer having the same technicians service my home so they \"know\" my home. I liked that 2 technicians arrived so it only took 2 1/2 hours, instead of 4 hours when 1 person does the job. Your guys are always very nice and professional. And I like that they are trained to park in front of my house not in the driveway. Thanks!

By Ellenjane

I have always found the GSM workers, office and service people very respectful and professional.

By Rich

Excellent customer service, work and people.

By Janice

As a brand new customer, everything has been top-notch and I have been pleased with the service. Thanks to Cole for his excellent customer service!

By Donald

We found you all through Google. The guys showed up just like they said they would and had our air conditioning running within almost minutes. We are super happy with the service and the way everything was explained to us.

By Joyce

I heard about GSM through my daughter, and I am very pleased with the service I receive. I would recommend them to anyone who asks.

By Shirley

GSM Services is always prompt and courteous. They do everything I need them to do and I will continue to use them.

By Danielle

GSM has always been efficient and dependable for us.

By Tommy

This was an install for my parents, 2 weeks ago we did the same install at my house and was so satisfied with mine that I did not consider any other company to take care of my parents

By troy

GREAT JOB!!!!!

By Tansukh

Very polite crew and excellent job done on the servicing.

By George

Always receive professional service and service person is very friendly and considerate of our needs.

By Phil

Zack was courteous and professional and gave us a clear understanding of the system, and service options and recommendations. Very thorough and pleasant to work with.

By James

It has been such a pleasure since we contacted you for service, and now that were on the service plan, it has made everything go so smoothly. Taylor was very professional and pleasant to have do our checkup. I have recommended you to friends, and my enemies to the company that installed the system. I wish I would have hired you to install system. Thanks

By Cheryl

I didn't know water heaters were something you did. next time they come out they need to talk to me about them. Mine is due to be replaced.

By mike

service person came up with a $1000 estimate for work that 3 different HVAC companies bid $500. What is the benefit of an annual contract? Double the market? Sure seems exhorbitant & wrong. Please advise

By Annette

I have been a customer for 40 years if not more...

By Barbara

We love the customer service. Our questions were answered and we really liked our technician. Very knowledgeable. GSM was recommended to us by friends and we are very pleased.

Reviews
Testimonials
Before & After
Photos
Awards
Affiliations

Greta C.
Hickory, NC

The technician who came to my home was very corteous and answered all my questions promptly. The work was completed in a timely manner and I am very pleased. Thank you very much!

Mr B.
Vale, NC

I had to reschedule serval times and the GSM staff went out of their way to accomodate my schedule.

St. Matthews Reformed Church
Maiden, NC

We appreciate the overall ethic of the company and getting the work done promptly. Also, we appreciate you coming back and completing work that was found later.

Ruth E.
Lawndale, NC

I have done business with GSM for a good many years and have always had good service. I can think of no improvements!

Sandy C.
Fallston, NC

I heard about GSM from a past customer and I love having someone who can also change filters and my smoke alarm batteries.

Randall L.
Fallston, NC

Excellent service! The technicians are awesome! They were friendly and professional and very efficient. We also want to point out how much we love the pink truck in support of cancer services.

Walter B.
Fallston, NC

We have been with GSM for many years. They have always provided us with the best service. I would reccomend them to anyone.

Darrell P.
Lincolnton, NC

The level of proficiency that was displayed by the salesman Jason and the presentation that he gave made our decision. As well ast he way GSM stands by their products and takes caare of customers.

George C.
Lincolnton, NC

From the very 1st day all info was up front and honest. Workers were courteous and got the work done in a timely manner. They always cleaned up every night and arrived when they said they would. Greg Paxton was more than helpful and very easy to talk to.

Chris B.
Lincolnton, NC

We were very happy with the service we received. When we have to replace our HVAC, GSM will receive our business. Thanks to both advisore that came out and explained things to us so that we could understand. They also gave us options and did not push any opton on us. They gave us the info and let us make the decision.

Eddie L.
Lincolnton, NC

I found James to be the kind of tech I would trust in my home alone when I couldn't be there for the service call.

Margaret A.
Crouse, NC

You do a great job and I am very glad we are connected with GSM. Please keep up the wonderful work. The technicians are always so nice, helpful, and honest.

The Kerns
Cherryville, NC

Shawn was the perfect representative for your company and was professional, knowledgeable and very courteous. He kept us informed every step of the way. He explained how the thermostat, complete system and ducting and dampers work. We no longer have rooms that are too hot or cold. The system is also amazingly quiet.

Alan and Diane K.
Cherryville, NC

Every employee I have had contact with from the ladies on the phone to the service technicians have all been outstanding and are committed to great service.

Thomas H.
Shelby, NC

I am very satisfied with your company, from the sales rep to the installers. Everyone was very professional and thorough. Another thing that was very professional was the follow up from the sales rep and his supervisor. I would recommend your company to anyone that needed a new unit or repair of their own existing unit.

Tony and Linda R.
Forest City, NC

Everything was done exactly as explained. The guys were neat and very professional. It was well worth the cost and am already seeing a difference in the AC running less and we've noticed a big difference in the amount of dust in the house.

Walter B.
Waco, NC

Service is very good, they're always there when we need them.

Zack C.
Waco, NC

I thank you all at GSM Services. I have always had the best experiences and customer service. Everyone at this company is truly excellent. Thank you again!

Sarah H.
High Shoals, NC

I am a long time customer and y'all need to stay as you are!

Trixie W.
High Shoals, NC

Every service call has ben on time and very clean. My overall experience has been great and I am very pleased with GSM.

Reviews
Testimonials
Before & After
Photos
Awards
Affiliations

Before

After

Cleaning Outdoor a/c Unit in Newton, NC

Chemically Clean the outdoor unit for full efficiency.
Before

After

Before and After - Crawl Space - Belmont NC

Great example of a before and after crawl space encapsulation. Our Dr. Energy Saver crew removed all insulation and completely sealed off the crawl space to make it a sealed conditioned space.
Before

After

AC Unit Cleanup in Lawndale, NC

GSM Services cleaned an AC unit to improve its efficiency in Lawndale, NC.
Before

After

Radiant Barrier for Attic

Radiant Barrier was installed in this attic space. Save energy in your attic!
Before

After

The dirt before we do our Tune ups

We strive to take an older dirty furance or a/c unit and turn it in to a clean ,refreshed well running machine to keep your home comfortable! See the before and after of this furnace in a crawl space that has gathered up dirty and grime from not being serviced by GSM.
Before

After

Installation of a ductless mini split in Lincolnton, NC

GSM Services installed a ductless mini split heating and cooling system in the bonus room over a garage.
Before

After

Furnace Safety Check & Tune Up in Lincolnton, NC

Before and after a full cleaning and tuneup of the furnace located at a customers home in Lincolnton, NC.
Before

After

Duct Cleaning in Lincolnton, NC.

Before & after of a duct cleaning project.
Before

After

Duct Cleaning Filter in Crouse, NC

Before (clean filter), and after duct cleaning. Another one bites the dust. Literally, not now though. Give us a call. Pictures don’t lie and health is wealth. Breath better. #GSMSince1927 #DuctCleaning #CharlotteNC #GreaterGastonArea
Before

After

Heating Tune Up in Crouse, NC

GSM did a heating tune up on a unit in Crouse, NC.