About us
Business highlights
97 years of trusted experience
Family Owned & Operated
Emergency Services Offered
Eco Friendly
Services we offer
Services we don't offer
Amenities
Free Estimates
YesWarranties
YesEmergency Services
YesAccepted payment methods
Our Recent Projects
Photos of past projects
Reviews
4.8100 Reviews
Filter reviews by category
Showing 26-50 of 100 reviewsRandall B.
01/2015
heating & air conditioning/hvac
+ -1 moreI was able to find several HVAC contractors for less. I paid $7,800 for a 3 ton 18 SEER 98% heat pump plus gas furnace all Goodman Brand. I already had the duct work.
Description of Work: Nothing. I can't afford him.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
$12,500
Douglas P.
09/2014
heating & air conditioning/hvac
+ -1 moreVery professional and effective from the time I called them to solicit a quote, through the time of consultation, installation and follow-up.
Description of Work: Replaced furnace and A/C system.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$7,200
E H.
06/2014
heating & air conditioning/hvac
+ -1 moreRoutine AC service was performed. The tech had to empty standing water from the drain pan because of a clog and went beyond the call of duty to show us some issues in the crawl. He was very pleasant and took the time to explain things thoroughly.
Description of Work: We've been using GSM for HVAC service for 8years now and have never had a problem. Techs are professional and the schedulers are always pleasant and helpful.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$500
Ken F.
06/2014
heating & air conditioning/hvac
+ -1 moreI called GSM because they had sent a letter in the mail offering a "free" heater with the purchase of a new AC unit. I had wanted a new system, had heard of them as a reputable company, so I figured I would have them give us a bid. Their advertising said that - because late winter / early spring was the "slow" season for them - they were practically giving their services away, offering the very best prices of the year, making no profit, just trying to keep their crews working until summer, etc, etc. Of course, I understand what "marketing" is, but it made sense that they might be offering a bit of a price break during this time of year. Like I said, I was bidding three other companies. Most came out and gave me their bid within a week. I think it took THREE weeks to get an appointment for an estimate with GSM. I had wanted to get the job going, so I even sent them a "heads up" email telling them the prices I was getting from other bidders... I didn't want them to waste their time if they couldn't beat the offers I already had. The salesman assured me that I should wait and see their offer before moving ahead. So I did. And quoting the SAME equipment, apples-to-apples, they gave me the HIGHEST price of all. I couldn't believe it. If this was their best, "low-season", rock-bottom pricing, I'd hate to see what their regular prices look like.
Description of Work: GSM was one of four companies I had bid to install a new HVAC system.
| Rating Category | Rating out of 5 |
|---|---|
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
$11,000
Amanda S.
04/2014
energy audit, heating & air conditioning/hvac
+ 0 moreI contacted GSM because two rooms on my second level were impossible to cool. GSM completed a home energy evaluation and identified several fixes. The itemized list allowed me to choose what I wanted to have done and I didn't feel pressured. The work was completed over two days by two different crews. Everyone was courteous, they were mindful of the occupants, and cleaned up after themselves. They even were friendly to our pets. Highly recommended.
Description of Work: Excellent work and superior customer service.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
Bob A.
11/2013
heating & air conditioning/hvac
+ -1 moreScott did a great job! Equipment and services from GSM are outstanding!!
Description of Work: Maintenance agreement service
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$100
Jim P.
09/2013
energy audit, heating & air conditioning/hvac
+ 0 moreVery pleased with the quality of work and final outcome.
Description of Work: Provided and installed a new HVAC and duct system.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$12,500
Jane P.
08/2013
heating & air conditioning/hvac
+ -1 moreUpdate: I had been given estimate by another HVAC company of $1800 to replace a part on the unit to stop freon leakage...James from GSM gave me alternative to seal the leaks with sealant at a cost of $567. He explained the process in detail and said it did carry a limited warranty. I decided on this option.
Description of Work: update: sprayed sealant into refrigerant line of air conditioning unit
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$567
Response from GSM Services
Erin W.
07/2013
heating & air conditioning/hvac
+ -1 moreOnce again, we are very pleased with experience with GSM. The company is very customer oriented and the job is not done until everyone is satisfied. They aim to please , and in our experience, they do!
Description of Work: Installed new unit.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$5,000
Response from GSM Services
Steven H.
07/2013
heating & air conditioning/hvac
+ -1 moreMY AC started making a noise late one night. I called GSM and their service tech called me back within 5 minutes. He came to the house around 10 PM and discovered the issue. He had to get the part the next day, but called me back late that morning and set up a time and was actually waiting on me when I got to my house. He had me up and running within an hour and a half and they gave me a package price, which reduced the cost. I was so inmpressed with them, that I decided to sign up with their annual maintenance agreement.
Description of Work: I had an issue with my AC unit which involved replacing the motor and wheel in the air handler.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$898
Response from GSM Services
Lee B.
03/2013
energy audit, heating & air conditioning/hvac
+ 0 moreWe decided to do the air sealing first. Greg told us that this was the best way to fix the "cold rooms" as well as making our furnaces and air conditioning units to work less and prolong their lives. He was right about the immediate difference in the comfort level of the home. The GSM team did a great job in air sealing my house and we are working with them now to install a tankless hot water heater and we definitely plan on doing more projects with them in the future. I definitely feel like I have better piece of mind about my house after getting this done.
Description of Work: My house is 14 years old and is a fairly large house. My family moved in about three years ago and had noticed some cracks in the ceiling of our master bath and bed rooms. We also had several rooms that were noticeably cooler that the other rooms on the second floor in the winter. Greg from GSM - Dr. Energy Saver came out to give me a free home energy audit. I expected some of the results from the audit but there were some surprises in a bad way as well. Greg went over some of the options that we could do for better energy efficiency in our home.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$3,800
Cyndi S.
03/2013
energy audit, heating & air conditioning/hvac
+ 0 moreGSM rep came out looked at the system told us what the problem was, gave us a simple solution and suggested a bigger update to the system. We chose the fix, which he did quickly and got us going again.
Description of Work: We had installed a new programable thermometer and during the install, blew out something.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$250
JOE B.
02/2013
energy audit
+ -1 moreTHE REP WHO CAME ABOUT SPENT ALMOST 4 HRS AND PROMISED TO SEND THE RESULTS OF HIS EVALUATION AND A PROPOSAL AND COST ANALYSIS BY EMAIL. IT HAS BEEN 3 WEEKS AND I HAVE NOT HEARD FROM ANYONE FROM THIS COMPANY. IF THEY USED 4 HOURS OF MY TIME, THEY SHOULD HAVE THE COURTESY AND PROFESSIONALISM TO AT LEAST FOLLOW-UP. I AM DISAPPOINTED, BUT AT THIS POINT GLAD I DIDN'T CONTRACT WITH THEM. IF THIS IS THEIR SERVICE, I WOULD HATE TO SEE THEIR WORK.
Description of Work: THE COMPANY SENT A REPRESENTATIVE TO DO AN ENERGY EVALUATION. HE CHECKED MY ATTIC, USED A BLOWER TO EVALUATE HEAT LOSS. DISCUSSED ISSUES I HAD AND WHAT HE DISCOVERED.
| Rating Category | Rating out of 5 |
|---|---|
| professionalism | |
| responsiveness | |
| punctuality |
Lorraine O.
11/2012
heating & air conditioning/hvac, metal restoration
+ 0 moreThey were wonderful. Everybody was very courteous. They replaced the system the very next day and were here at 7:30 am.
Description of Work: I had a power pack installed. I had holes in my heat exchanger. They installed a new thermostat in my hallway and explained it to me before leaving. They installed a CO2 detector for me.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
David S.
11/2012
heating & air conditioning/hvac
+ -1 moreThe serviceman that came out for my first visit was thorough and professional, and I was able to watch everything he did. I am a retired electrician, so had a fair idea what he was doing. No lame attempts to sell unnecessary parts or services. So far, so good.
Description of Work: I bought a twice yearly cleaning and inspection of HVAC system. Pay by the month is actually cheaper than single yearly payment. This was the first visit.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
Sean M.
11/2012
heating & air conditioning/hvac
+ -1 moreI would recommend them to anyone who needs HAVC service. They identified the probelm, fixed it temporarily so we wouldn't be 100% without heat, then came and fixed it permanently. AWESOME experience all around.
Description of Work: GSM came out and performed a diagnostic test on our furnaces, idntifying a bad control panel on one that needed to be replaced. They immediately scheduled the follow up appointment and promptly met the appointment time and provided us with better service and information than our prior HVAC service provider. In addition, they followed up with a phone call BEFORE the scheduled appointment to make sure we were OK in our home given the fact that temperatures were dropping in the overnight hours into the 30's knowing we might be without proper heating until they replaced the panel. They take customer service to the highest level.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$600
Cheryl R.
11/2012
heating & air conditioning/hvac
+ -1 moreWe've been using them for many years. They did a great job. They are very professional and always do a great job.
Description of Work: They put in a complete new A/C and furnace.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
Jackie R.
10/2012
heating & air conditioning/hvac
+ -1 moreThey come out every six months and do a maintenance inspection. They are absolutely professional, very courteous, and very careful with my home. They are very careful to be as neat as they can be. They are very informative and they keep great records of what they’ve done to my system, how old it is, what problems it had, what it might be due for, and I find it so helpful.
Description of Work: I have used GSM Services. They did a system checkup on my heating and air.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$100
Charled K.
08/2012
heating & air conditioning/hvac
+ -1 moreme something I didn't need or overcharge me. My advise, steer clear of GSM!
Description of Work: I am a Preferred customer of GSM and pay them 14.00 per month for two annual service visits. When one of my A/C units began not to cool properly last week I called them and they were there within three hours as promised! The problem comes in when I received their "diagnosis" and the Bill. They charged me 100.00/pound for R22 Refrigerant and estimated that I needed a new Evaporator Coil at an additional cost of 850.00. (And that's with the supposed 15% preferred customer discount) In April during their last service visit, the tech. told me that I had a minor Freon leak and that he recommended "Leak Freeze" be added to my system to stop it. The cost, $450.00! The tech that came out last week also said I had a leak but didn't offer the leak stop and instead pushed me to buy the new evaporator coil. When I received a follow-up call from the service manager the next day I complained about the price and noted that two separate GSM techs. had given me two different recommendations. He then suggested I use the Leak Stop and told me that it was successful in stopping leaks in 95% of the systems that it was installed in. (If that's true, why even propose a new evaporator coil in the first place?). I've since had two additional HVAC contractors look at my system and they are quoting me 500.00- 600.00 to replace the coil, OR 150.00 - 200.00 to install leak stop. (My Choice). They are also charging between 35.00 and 50.00 per pound for R22. I now have a serious trust issue with GSM and believe that they are overpricing their service and taking advantage of their customers' lack of knowledge about their systems. I orginally signed on with them because I believed that they would NOT try to sell
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
$310
Dino D.
08/2012
heating & air conditioning/hvac
+ -1 moreWent very well, Living in an older historic home with some unique situations in designing a HVAC system Steven Long provided a solution which has worked well and provided us with a comfortable home. Be sure to explain all family situations how home is to be used, lifestyle, work and stay at home situations and and future plans to changes that could impact the design of the system. For us we knew we would be doing renovations for several years taking pieces at a time which ultimately took 4 years to complete. Our situation was a little more unique possibly than most. Also talk about budget upfront and look at long and short term benefits in the design and options for replacing a system.
Description of Work: GSM provided total new heating, duct work and abatement of old duct work that contained asbestos in 2002 and has continued to service the 2 systems they installed twice a year. In 2006 when we completed major renovations they also completed installation of new ventilation installation for baths and kitchen as well as new gas lines for a gas dryer and ventilation of the dryer which was about another $3000 in work. Have always considered them a litte higher on the price range but the quality, responsiveness and professionalism have been great. I will continue to use them and are working with them now for an energy audit of our home. Would highly recommend.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$16,000
Erin W.
06/2012
heating & air conditioning/hvac
+ -1 moreWe have used a number of heat and air companies. This company is TERRIFIC. Our heat pump broke and we had been contending with airflow issues for years. We called several companies to give us quotes and solutions. We actually left the company we had our maintenance agreement with since their bid was close to double that of GSM. Not only was the money significant, but the other companies proposed such complicated/expensive methods to trying to correct our problem. Kirby from GSM was excellent at explaining what they could do for us. Once we accepted to go with them, they sent a project manager out to look at the job prior so everyone was on the same page. The installers were also very professional, neat and were able to explain their work well. Kirby had a meeting with us to make sure we are happy (WE ARE THRILLED!!!!) and to see if we had any questions about running the system. He gave a list of phone numbers from his,all the way to the owner of the company. Who does that?! You really get the feeling that they are grateful for your business. I am delighted to highly recommend this company . I hope that our other system lasts for a long long time. But when its done with its job, there is no questions who we will use.
Description of Work: Installed new heat pump for us.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$800
Christopher G.
12/2011
energy audit, heating & air conditioning/hvac
+ 0 moreVery well. the estimate was emailed when expected and all details were included.
Description of Work: Brent was prompt. The explanations were agreeable. We discovered solutions that we might perform.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
Marie E D.
11/2011
heating & air conditioning/hvac
+ -1 moreThey assessed the condition of our old furnace. We purchased the new one and they had it installed within just a few days. They brought in space heaters before they could install the furnace in case we got cold.
Description of Work: They installed a new furnace.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$9,700
Tim S.
09/2011
heating & air conditioning/hvac
+ -1 moreI have a yearly service contract with them and they come out every quarter. I purchased the contract for a year. It is $14.00 a month so it comes up to about $150.00 for the year. They didn't change the filters. They just left the filters on the table for me to change. I wasn't real happy about that. They missed one filter in the kitchen. I had to call them back to do that. They came back later the same day and brought the filter out, but I would expect that they would change them out. I signed up for the service contract in April when they came in and installed a new register in the kitchen.
Description of Work: Gastonia Sheet Metal Works came out in July and did the maintenance that included checking the air-conditioners and the filters.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$14
dave N.
09/2011
heating & air conditioning/hvac
+ -1 moreWhen the a/c breaks and house gets warm the time for comparison shopping is gone. Quick service and friendly/competent tech was a plus. Of course the selling of a service plan is part of the visit too. They say it will save you money and give you priority on service calls - hard to know for sure. Also had a "free"- normally $495 - home energy check done - was worthwhile - pointed out all the places I could be loosing my valuable conditioned air and recommended corrective actions to take with a cost total. I fixed most of it myself. I will use them again - at least till my service plan expires !!
Description of Work: I needed the evap coil replaced - the 3 ton a/c unit is out side house - the coil is part of a combined central air & gas heat system in basement of house. I had used them before in 2005 to replace outside unit. ($2350) - was Jim Long Inc. then.
| Rating Category | Rating out of 5 |
|---|---|
| quality | |
| value | |
| professionalism | |
| responsiveness | |
| punctuality |
Yes, I recommend this pro
$2,043
Contact information
407 E Long Ave, GASTONIA, NC 28054
https://www.gsmsince1927.com/Service hours
Sunday:
8:00 AM - 8:00 PMMonday:
8:00 AM - 8:00 PMTuesday:
8:00 AM - 8:00 PMWednesday:
8:00 AM - 8:00 PMThursday:
8:00 AM - 8:00 PMFriday:
8:00 AM - 8:00 PMSaturday:
8:00 AM - 8:00 PMDeals
Licensing
Bonded
Insured
Licensed*
Trade License Number
11953 - NC: 3899 - SC: M2002
Eco-friendly Accreditations
LEED Accredited Professional
No
Energy Star Partner
Yes
EPA Lead-Safe Certified
Yes
Use Green Products or Work Practices
Yes
State Contractor License Requirements
All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our State Contractor License Requirements page.
*Contact business to see additional licenses.
Service Categories
Heating and Air Conditioning,
Insulation,
Energy Efficiency Auditing,
Metal Fabrication & Restoration,
Dryer Vent Cleaning,
Air Duct Cleaning,
Basement Waterproofing,
Roofing
FAQ
GSM Services is currently rated 4.8 overall out of 5.
Sunday: 8:00 AM - 8:00 PM
Monday: 8:00 AM - 8:00 PM
Tuesday: 8:00 AM - 8:00 PM
Wednesday: 8:00 AM - 8:00 PM
Thursday: 8:00 AM - 8:00 PM
Friday: 8:00 AM - 8:00 PM
Saturday: 8:00 AM - 8:00 PM
GSM Services accepts the following forms of payment: Check,CreditCard,Financing Available,PayPal,Venmo,Zelle
Yes, GSM Services offers free project estimates.
Yes, GSM Services offers eco-friendly accreditations.
No, GSM Services does not offer a senior discount.
Yes, GSM Services offers emergency services.
Yes, GSM Services offers warranties.
GSM Services offers the following services: Air Conditioning Installation & Repairs • Furnace Installation & Repairs • HVAC Replacement • Insulation Services • Air Duct Cleaning • Dryer Vent Cleaning • FREE Home Energy Audits • Crawl Space Encapsulations • Crawl Space Repair • Home Generator Installations • Air Quality Solutions • Humidifiers • Dehumidifiers • Duct Replacement • Duct Repair
• FREE HVAC Service Calls with Repair
• FREE Online Quotes on Air Duct Cleaning
• FREE Online Quotes on New Heating & Cooling Systems
• FREE Insulation Inspections
• FREE Crawl Space Inspections
• FREE Home Energy Audits
appliance repairs (refrigerators, dish washers, washer/dryers, etc.)
Contact information
407 E Long Ave, GASTONIA, NC 28054
https://www.gsmsince1927.com/Service hours
Sunday:
8:00 AM - 8:00 PMMonday:
8:00 AM - 8:00 PMTuesday:
8:00 AM - 8:00 PMWednesday:
8:00 AM - 8:00 PMThursday:
8:00 AM - 8:00 PMFriday:
8:00 AM - 8:00 PMSaturday:
8:00 AM - 8:00 PM