One Hour Heating & Air Conditioning of Charlotte

Locally owned and operated, GSM Services has been providing trusted HVAC and home comfort solutions for over 98 years. We’re a licensed, insured, and certified contractor known for expert craftsmanship and fast, affordable, and dependable service. We specialize in heating and air conditioning repair, maintenance, and installation. Our full-service offerings also include home insulation, duct cleaning, crawlspace and attic services, home mold and air quality solutions, and standby generator installations. Enjoy easy online scheduling, free quotes, free HVAC service calls with repairs, and free inspections for your home, attic, crawlspace, insulation, and mold. Proudly serving Gastonia, Belmont, Shelby, Lincolnton, Charlotte, Hickory, Fort Mill, and all surrounding areas. Trust GSM for Top-Dog Service for Generations. Book online today!

Struggling with a broken AC, uneven heating, or poor indoor air quality? Johnny On The Spot Heating & Cooling in Maiden, NC, delivers fast, reliable HVAC solutions to restore your comfort. Our expert team specializes in AC repair, heating repair, furnace maintenance, ductless systems, and duct cleaning. We also provide water heater services and air purification for healthier air. Serving both homes and businesses, we focus on energy efficiency and dependable service. Don’t let HVAC issues disrupt your comfort. Contact us to schedule your service today for expert repair, maintenance, and installation!

One Hour Heating & Air is a residential and commercial HVAC repair and replacement company. We also provide duct sealing, duct cleaning and complete indoor air quality applications.