Dallas, NC HVAC
AC Repair, HVAC Replacement & Installation Services in Dallas, NC
For 99 years, GSM Services has been the trusted choice for AC repair, HVAC replacement, installation, and maintenance services in Dallas, NC. Our certified technicians deliver fast, reliable service and honest, upfront pricing. We're proud to have been voted Best HVAC Company in Gaston County for the past 10 years and are dedicated to improving your home's comfort, air quality, and energy efficiency. Enjoy easy online scheduling, instant online quotes, and FREE service calls with repairs!
Why Locals Choose GSM Services:
- ✅ Fast, Affordable & Reliable
- ✅ Licensed and Insured
- ✅ Locally Owned for 99+ Years
- ✅ Voted Best Heating & Cooling Company
- ✅ 100% Guaranteed Satisfaction
- ✅ Outstanding Warranties
- ✅ Unbeatable Financing for Any Budget
- ✅ FREE HVAC Service Calls with Repairs
- ✅ FREE System Quotes
- ✅ FREE Insulation, Crawlspace and Home Energy Audits
Duct Cleaning & HVAC System Prices in Dallas, NC
Need HVAC Quote or duct cleaning prices? Get your free quote online in seconds!
How Much Does a New AC System Cost in Dallas, NC?
A new Air Conditioning system in Dallas, NC typically costs $8,000–$20,000+, depending on your home's size, system efficiency, ductwork, and installation requirements. Factors like square footage, insulation, and existing equipment can also impact pricing.
Get an instant estimate with GSM's free HVAC System Cost Calculator. Receive customized AC pricing and estimated monthly payment options for your Dallas, NC home before scheduling an appointment.
HVAC Replacement & Installation Services in Dallas, NC
Looking for a New Air Conditioning System? Our licensed HVAC installers specialize in high-efficiency heating and cooling systems designed to improve comfort, indoor air quality, and lower energy costs. We'll help you compare your options and find the right system for your home. Schedule your free, no-obligation consultation and quote today!
Heating & Cooling Services in Dallas, NC:
Crawl Space, Insulation, Generators & Other Home Services We Offer in Dallas, NC:
AC Repair in Dallas, NC
Need AC repair in Dallas, NC? GSM Services provides fast, reliable AC repair for all makes and models. Our licensed HVAC technicians deliver expert service, honest pricing, and quality repairs you can trust. Plus, we waive the service call fee with repairs! Schedule online now for fast AC repair or service!
HVAC Repair & Service for All System Types
- Central HVAC Systems
- Heat Pumps
- Air Conditioners
- Furnaces
- Ductless Mini Splits
- Packaged HVAC Units
Warning Signs Your HVAC System Needs Repair
- AC Blowing Warm Air
- AC Freezing Up or Ice On AC Unit
- Furnace Not Heating
- System Not Turning On
- Weak Airflow From Vents
- Loud & Unusual Noises
- Frequent Cycling On And Off
- Hot/Cold Rooms
- Musty Smells or Odors
- Excess Humidity Indoors
- High Electric Bills
HVAC Duct Cleaning Services in Dallas, NC:
GSM Services' professional duct cleaning removes dust, debris, and buildup throughout your entire duct system—not just the vents—to help improve indoor air quality and HVAC performance. We also inspect your ductwork for leaks or damage and include a disinfectant treatment for a fresher, cleaner home. Get your free instant online quote today!
Top Insulation Company in Dallas, NC
GSM Services is your trusted local insulation company in Dallas, NC. We install attic, wall, crawlspace, floor, garage, and whole-home insulation to improve comfort, indoor air quality, and energy efficiency. Our insulation experts help homeowners lower energy bills, reduce hot and cold spots, and enjoy a more comfortable home year-round. Schedule your free insulation inspection online and receive a custom, no-obligation quote.
Photo Galleries From Dallas
Finished project
Finished project
Crawl Space Encapsulation Completed
News & Events From from Dallas
Is a wifi thermostat right for your home?
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]
Save Energy on Heating with This List
High energy bills can come as a surprise in the winter. In our service area, air conditioners see a lot more use than heaters. When temperatures drop, homeowners might feel relieved as bills start to lower as well-until the heater becomes more and more of a necessity.... [Read more]
More News & Events
Work Requests From Dallas, NC
- Project Location: Dallas, NC
My AC is not working like it should. Came home yesterday to my house 78 degrees, it was set for 73. It was blowing out but not cool air. Changed my filter. When I woke up this AM it had came down to 75 degrees. Thanks - Project Location: Dallas, NC
You do my every 6 month service. My indoor part of my ac is leaking water so it's off and I have no ac. I want to replace my whole heating and air system so that it's all outside. It's a 4 ton unit and you have all the info on it. I need a cost please - Project Location: Dallas, NC
Tune up/system service for summer - Project Location: Dallas, NC
Estimate on Geothermal Heat Pump Installation - Project Location: Dallas, NC
My outside unit is old and has been going out. I've had a lot of work done on it over the years, but I feel it is time to replace the unit. I can't afford to pay upfront and was wondering if you have financing available? - Project Location: Dallas, NC
Hello, recently I had another business come and replace a fan motor and blade on an HVAC unit. It is now been making a very loud noice when turned on. The other business said they tried everything to quiet it down but they couldn't stop it or make it quieter. How much does it cost to come and look at the unit?We do need to replace our units they are 20 years old but I am unsure we can afford it right now. Thank you. - Project Location: Dallas, NC
Coils need to be cleaned, AC much cooler downstairs than up. Additional information: Date requested: 05/25/2020 - Project Location: Dallas, NC
Looking to get a mini split system installed - Project Location: Dallas, NC
I just wanted to get a quote for duct cleaning for single story house. 10 vents, 1 return , was told that there are 3 main ducts under house instead of one main with ducts branching off. Please email me with a quote. Thank you - Project Location: Dallas, NC
Schedule a pre-paid cooling precision tune-up - Project Location: Dallas, NC
Generac full home generator assessment, quote, installation & service. - Project Location: Dallas, NC
Moisture and water intrusion in my crawl space - Project Location: Dallas, NC
I was interested in obtaining an estimate for maintenance for my a/c unit. As of right now, I do not have it serviced regularly but would like to if it is not too expensive. - Project Location: Dallas, NC
2 items. At the moment, my air is not functioning very well - may be low on freon and needing a recharge, at least it feels that way. Also, I'd like to get an estimate on a new heat pump split system. My current system is 20+ years old so it's way past time. Probably won't need new duct work, but it's possible they would need to be sealed up some. Thanks. - Project Location: Dallas, NC
We just bought a home and would like to have the hvac serviced to make sure it runs well through the summer. - Project Location: Dallas, NC
Our utilities bill is too high and want to reduce it. - Project Location: Dallas, NC
No heat. May be self-inflicted. Tried to replace the thermostat and now neither heat or a/c will come on. Rudd heat pump / ac unit less than 1 year old. Can we get service today? Tenants will need heat tonight. Thanks! - Project Location: Dallas, NC
Like to know that cost of duct cleaning - Project Location: Dallas, NC
Follow up Inquiry for crawlspace rennovation. Checking in again about pricing options. We've spoken previously about these matters.
See all work requests
Products & Services
HVAC Systems
- air conditioning company
- air conditioning systems
- HVAC Replacements
- central air conditioning
- ductless air conditioning
- gas furnace
- geothermal heating and cooling
- HVAC tune ups
- high-efficiency HVAC systems
- ductless heating systems
- HVAC companies
- furnace installation
- furnace repair
- AC installation
- AC repair
- heat pump installation
- heat pump repair
Crawl Space Repairs
- crawl space encapsulations
- crawl space vapor barrier
- crawl space cleanings
- dehumidifers
- crawl space inspections
Home Energy Audits
- energy efficiency audit
- air leakage testing
- blower door testing
- crawl space inspection
- attic inspection
- insulation inspection
Home Generators
- generator installation
- generator repair
- generator service
Home Insulation Services
- attic insulation
- insulation installation
- insulation inspections
- insulation removal
- insulation company
- blown in insulation
- cellulose insulation
- duct insulation
- green insulation
- insulation contractors
- pipe insulation
- reflective insulation
- rigid foam insulation
- roof insulation
- wall insulation
- window insulation
- Crawl Space Insulation
- radiant barrier insulation
Air Sealing
- sealing air leaks
- air duct leakage
- air duct sealing
- air leakage testing
- door air seal
- window air leakage
Air Duct Cleaning
- duct cleaning services
- duct disinfectant spray treatment
- air vent cleaning
Ductwork
- ductwork repair
- ductwork installation
- ductwork cost
- furnace ductwork
- HVAC ductwork
- duct cleaning
Dryer Vent Cleaning
- dryer vent cleaning services
- dryer vent replacement
Before and After Pictures from Crouse
Duct Cleaning Filter in Crouse, NC
Heating Tune Up in Crouse, NC
Company Awards
2026 Best Heating & AC Company
GSM Services Named 2026 Best of Gaston Winner for Best Heating & Cooling Company.
2025 Best Heating & Cooling Company
GSM Voted 2025 Community Choice Award Winner.
2024 Community Choice Award Winner
Voted Best Local HVAC Company in 2024.
2023 Community Choice Award Winner
Voted Best Heating & AC Company & Best Home Service Provider in the county.
Best of Gaston 2022
GSM Services won Best Heating & Cooling Company and Top Place To Work in the County!
Best Contractor to Work For - ACHR News
Named Best Contractor to Work For by ACHR News, a leading national industry publication in 2021.
Top Place to Work in Charlotte
GSM was recognized as one of the Top Places to Work in 2019 by The Charlotte Observer.