Furnace Repair, HVAC Replacement & Installation Services in Gaffney, SC

For 99 years, GSM Services has been the trusted choice for Furnace repair, HVAC replacement, installation, and maintenance services in Gaffney, SC. Our certified technicians deliver fast, reliable service and honest, upfront pricing. We're 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:

• ✅ Fast, Affordable & Reliable
• ✅ Licensed and Insured
• ✅ Locally Owned for 99+ Years
• ✅ Voted Best HVAC 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 Gaffney, SC?

The cost of a new HVAC system in Gaffney, SC 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 Gaffney, SC. Compare system options, estimated monthly payments, and personalized HVAC installation costs in minutes—before scheduling an in-home consultation.

HVAC System Prices & Duct Cleaning Cost in Gaffney, SC

Need HVAC quotes or looking for duct cleaning prices? Get your free quote online now!

Heating & Cooling Services We Offer:

Crawl Space, Insulation, Generators & Other Services We Offer:

Furnace Repair in Gaffney, SC

If your Heater isn’t working, trust GSM Services for fast, affordable Furnace repair in Gaffney, SC. 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.

HVAC Replacement & Install Experts

Looking for a New Heating System? Our licensed HVAC installers in Gaffney, SC 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 AC options and help you choose the right system for improved comfort, quieter operation, and cleaner indoor air. Call or 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

Gaffney, SC Crawl Space Repair & Service Contractors

GSM Services provides professional crawl space services in Gaffney, SC. Our team protects your home from moisture damage and mold, enhancing air quality, boosting energy efficiency, and reducing pests. A well-maintained crawl space also strengthens structural stability and overall comfort. Book a free crawl space inspection and quote online today!

Crawl Space Solutions:

• Crawl Space Mold & Growth Solutions
• Crawl Space Encapsulations
• Crawl Space Cleanings
• Crawl Space Insulation
• Crawl Space Dehumidifiers
• Vapor Barrier Installations
• Sump Pumps & Water Removal
• Crawl Space Doors

Duct Cleaning Services in Gaffney, SC:

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 Gaffney, SC

GSM Services is your trusted local insulation company in Gaffney, SC. 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!

Work Requests From Gaffney, SC

• Project Location: Gaffney, SC
  Inherited parents house. Need to evaluate attic. Had roof replaced last year. Had wiring replaced last month.
• Project Location: Gaffney, SC
  24x40x12... needing price to spray inside of new garage , all medal with 2 10x10 garage door 3 30x30 windows and 1 60x80 door
• Project Location: Gaffney, SC
  Pricing on my 1500 sq foot home
• Project Location: Gaffney, SC
  Ventilated, unsealed crawlspace. Need estimate to seal the crawlsoace.
• Project Location: Gaffney, SC
  I'm wanting an estimate to install a radiant barrier, seal cracks ( light fixtures) ,upgrade insulation in attic, and possibly look at other items such as sealing windows and doors.

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

Company Awards

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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.

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Best of Gaston 2022

GSM Services won Best Heating & Cooling Company and Top Place To Work in the County!

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Best Contractor to Work For - ACHR News

Named Best Contractor to Work For by ACHR News, a leading national industry publication in 2021.

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Top Place to Work in Charlotte

GSM was recognized as one of the Top Places to Work in 2019 by The Charlotte Observer.