Top Local HVAC Repair Experts

Fast and Affordable Heating & Cooling Repair

For over 99 years, GSM Services has delivered convenient, dependable HVAC services and repairs in Gastonia, Belmont, Charlotte, Clover, and surrounding areas! We provide:

• ✔ FREE Service Calls with AC Repair ($69 value)
• ✔ Quick & Easy Online Booking
• ✔ Service all System Makes & Models
• ✔ Certified HVAC Technicians
• ✔ Upfront Pricing—No Surprises, Ever
• ✔ Repair Warranties
• ✔ Licensed & Insured HVAC Experts
• ✔ FREE Online Quotes for New Systems & Duct Cleaning
• ✔ Full Range of Services to Improve Comfort, Efficiency & Air Quality

Why Locals Choose Us For Their Heating & Cooling Repairs:

• ✅ Worry-Free Pricing: No surprise charges after the work is quoted, ever.
• ✅ Comprehensive Service: We service all HVAC system types and brands.
• ✅ Peace of Mind Warranty: All repairs are backed by our comprehensive warranty.
• ✅ Top-Quality: Our services and repairs are executed to the highest standards.
• ✅ Dependable: Trusted and reliable for over 99 years in the community.
• ✅ Customer Focused: Work at the customer’s convenience.
• ✅ Expert HVAC Technicians: Certified, licensed, and insured team.
• ✅ Financing Options: Great financing options available.
• ✅ Online Estimates: Get free, no obligation quotes for HVAC system installations in 30 seconds.

Signs You Need HVAC Repair

• AC Blowing Warm Air
• AC Not Turning On
• HVAC System Not Cooling
• Furnace Not Heating
• AC Running but Not Cooling
• HVAC System Making Strange Noises

Need a New HVAC System? Get a Free Online Quote

Try our HVAC Installation cost calculator to get a quote for a new air conditioning & heating system. Answer a few questions about your home and get a quote in less than 30 seconds!

Common Heating & Cooling System Problems

• Thermostat Issues: Incorrect settings, dead batteries, malfunctioning thermostats can prevent the AC from turning on.
• Tripped Breaker: A tripped breaker or blown fuse can cut power to the AC unit.
• Dirty Air Filter: Clogged filters restrict airflow, causing the unit to freeze up or function poorly.
• Dirty Coils: System coils can become dirty, reducing the system's ability to expel heat and causing it to shut down.
• Refrigerant Leak: Low refrigerant levels due to leaks can lead to inadequate cooling and can prevent the AC from turning on. We offer AC Recharge Services if your refrigerant levels are low.
• Faulty Capacitor or Contactor: These electrical components help start the compressor and fan. If they're malfunctioning, the system won’t operate.
• Clogged Drain Line: A full or clogged condensate drain line can trigger a safety switch that turns off the AC.
• Frozen AC System: Insufficient airflow or low refrigerant can cause the system to freeze up.
• Compressor Issues: If the compressor is failing or dead, the entire system won’t work.
• Faulty Control Board or Motor: Electrical issues, such as a faulty control board or a burned-out blower motor, can prevent the AC from starting.
• Thermostatic Expansion Valve (TXV) Issues: A malfunctioning TXV can restrict refrigerant flow, affecting the performance.
• Improper Installation: Incorrect sizing or installation can lead to inefficiencies and operational problems.
• Old HVAC System: Over time, wear and tear on AC components can lead to decreased efficiency and eventual failure.
• Compressor Motor Failures: if the motor is failing the system may develop unusual noises or stop working. Just like the motor in a vehicle, neglecting maintenance can shorten the motors lifespan and cause HVAC system failures.

HVAC Repair & Heating and Cooling Experts in Gastonia, NC

For more than 99 years, GSM Services has been Gastonia’s trusted name for HVAC repair, heating, and air conditioning services. Our licensed and insured technicians provide fast, reliable repairs and maintenance for all major systems — ensuring maximum comfort, efficiency, and indoor air quality year-round.

Whether your AC isn’t cooling, your furnace needs repair, or you want to prevent costly breakdowns with regular maintenance, we’re here to help. We proudly serve Gastonia, Belmont, Charlotte, Fort Mill, and all nearby communities with honest, expert HVAC solutions tailored to your home.