Furnace Repair, HVAC Replacement & Installation in Kings Mountain, NC
For 99 years, GSM Services has been the trusted choice for Furnace repair, HVAC replacement, installation, and maintenance services in Kings Mountain, 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
How Much Does a New Heating & Cooling System Cost in Kings Mountain, NC?
The cost of a new HVAC system in Kings Mountain, NC typically ranges from $8,000 to $20,000+ in 2026, depending on the size of your home, the efficiency of the system, ductwork requirements, and installation complexity.
Want to know what a new Furnace may cost for your home? Use our HVAC Cost Calculator to get instant Heating System replacement pricing in Kings Mountain, NC. Compare system options, estimated monthly payments, and personalized HVAC installation costs in minutes—before scheduling an in-home consultation.
Duct Cleaning & Heating System Quotes in Kings Mountain, NC
Need HVAC or duct cleaning? Get your free instant quote online in just 30 seconds!
Heating & Cooling Services in Kings Mountain, NC:
Crawl Space, Insulation, Generators & Other Home Services We Offer in Kings Mountain, NC:
Furnace Repair in Kings Mountain, NC
If your Heater isn’t working, trust GSM Services for fast, affordable Furnace repair in Kings Mountain, NC. Our licensed HVAC technicians service all makes and models, provide expert solutions, and offer clear, upfront pricing with no hidden fees. We also include a free service call with any repair.
Furnace Replacement & Installation in Kings Mountain, NC
Looking for a New Heating System? Our licensed HVAC installers in Kings Mountain, NC are certified experts in energy-efficient heating & cooling systems that can lower your energy bills by up to 30%. We’ll walk you through the latest HVAC options and help you choose the right system for improved comfort, quieter operation, and cleaner indoor air. Book online today for a free, no-obligation consultation and quote!
Certified Service for All Types of Heating & Cooling Systems
- Central Heating & Air Conditioning Systems
- Ductless Mini Splits
- Package Systems
- Heat Pump Systems
- Gas furnaces
- Oil furnaces
- Electric Furnaces
HVAC Duct Cleaning Services in Kings Mountain, 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!
Insulation Services in Kings Mountain, NC:
GSM Services is your trusted local insulation company in Kings Mountain, NC. We provide high-quality, affordable home insulation for attics, walls, crawl spaces, basements, floors, garages and more. Our certified experts use various insulation types to fit your home and budget, helping reduce energy bills and improve comfort and air quality year-round. Experiencing uneven temperatures or high utility costs? Schedule your free insulation inspection today! We’ll assess current insulation, check for air leaks or moisture issues, and provide a custom, no-obligation quote for your home. Call or book online now!
Photo Galleries From Kings Mountain
16 seer Amana split system installation
News & Events From from Kings Mountain
Start 2017 with saving Energy, Money, & the Planet!
Home improvements are a great way to start off your new years resolution of "saving money". Take a look at your heating and cooling costs and have a Whole Home Energy Evaluation done.... [Read more]
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 Kings Mountain, NC
- Project Location: Kings Mountain, NC
I'm in the process of finishing an upstairs bonus room, and need to install an HVAC system (central a/c or ductless). Entire space is approx 1200 sq ft carved up into 4 rooms with the largest being 646 sq ft. - Project Location: Kings Mountain, NC
I have an older heat pump that needs replacement. Just looking at options. - Project Location: Kings Mountain, NC
Needing just a routine service of our AC system. Just purchased home and would like it "tuned up". Cleaned well and looked over for any major inefficient operation. - Project Location: Kings Mountain, NC
Need to get a quote for a Whole Home Generator. - Project Location: Kings Mountain, NC
Air conditioning is not blowing cold air. - Project Location: Kings Mountain, NC
Need to get system checked out and estimate for quarterly service. - Project Location: Kings Mountain, NC
Would like a quote for duct cleaning and sealing. - Project Location: Kings Mountain, NC
Some vents are not connected. Older system. Need an evaluation. - Project Location: Kings Mountain, NC
We would like to have additional blow-in insulation placed in our attic. - Project Location: Kings Mountain, NC
Downstairs Unit not Blowing cold, compressor turns on and runs. Upstairs Unit froze up when overworked - currently working. - Project Location: Kings Mountain, NC
Looking for new split system or package unit. Also interested in crawlspace encapsulation - Project Location: Kings Mountain, NC
Need new Heat & Air pump with financing Retired on Disability I 2015 and draw SSI Live on fixed income. - Project Location: Kings Mountain, NC
I need to obtain a quotation to have the air ducts cleaned in our facility. - Project Location: Kings Mountain, NC
Set up existing unit, run 2 ducts and 1 return line. Come back later and check it out when power is turned on. - Project Location: Kings Mountain, NC
AC freezing up - Project Location: Kings Mountain, NC
We purchase a 3000 Sq ft commercial building recently and looking to install Mitsubishi mini-split unit into the office and our shop area. - Project Location: Kings Mountain, NC
When we turn on the AC unit the house is not getting cold and it does not seem like the fan outside has been moving - Project Location: Kings Mountain, NC
I was curious how much just an annual checkup/service and probably freon recharge would be? Our AC seems to be not as cold as usual. - Project Location: Kings Mountain, NC
I would like a price on a Generac generator, installed for whole house backup electric. 1800 square foot coverage. Thanks! Janet - Project Location: Kings Mountain, NC
Foam wall insulation
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 Kings Mountain
Replace and relocate outdoor units
Crawl Space Encapsulation - Kings Mountain, NC
Everlast Crawl Space Door
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.
Recent Jobs and Reviews in Kings Mountain, NC
Kings Mountain, NC at a glance
GSM Services has completed 21 jobs in Kings Mountain, NC between December 2021 and March 2025.
The most recent job was on March 18, 2025.
GSM Services completed its first job in Kings Mountain, NC in December 2021.
Job Locations and Reviews
Crawl Space repair and cleanup
Installation of a Whole Home Generator
Generator Call, Performed a new installation of a Generac Generator
Crawlspace Call, Performed an encapsulation of the crawlspace & installed a Santa Fe dehumidifier
Furnace Call, Performed new installations of the AC and Furnace
Ductwork Call, Performed an installation of duct board trunk line
Insulation Call, Performed an installation of new insulation into the attic
Dryer Vent Call, Before & After of a dryer vent cleaning
Crawl Space Call, Performed an installation of a Sump Pump
Package Unit Call, Before & After of a Package Unit changeout
Duct Work Call, Performed a replacement of the duct system
Guttering Call, Performed an installation of gutters and downspouts
Duct Call, Performed a cleaning of the duct system
Guttering Call, Performed a repair of the guttering system
Generator Call, Performed an installation of a new generator
Encapsulation Call, Performed an encapsulation of the crawl space and reinsulation of the floor.
Guttering Call, Performed an installation of gutter guards onto the guttering.
New HVAC Unit, New Unit Installation
New Furnace and AC, Heating & Cooling Unit
Air Conditioning Tune Up. AC maintenance.
Phenomenail Aire installation. Air Purification.