Notice MainStream Heating & Cooling plans to continue to provide you our best service during this crisis. Please forgive us as we ask our technicians to no longer shake your hand or hug you. We are asking them to wash their hands more frequently and use hand sanitizer. Have no worry, if you need us, we plan to get to you as fast as possible to ensure your home is comfortable and safe. We are open 24/7 and always offer a LOW $49 repair diagnostic if you have an emergency.
Fast Service at a Fair PriceTM Call or text us TODAY! (931) 647-9610  Mainstream on Facebook


emergency service

When you need an HVAC system in Clarksville for your home or business, MainStream’s NATE certified skilled technicians have the know-how to diagnose, adjust or repair your equipment with minimum interruption to your comfort. We specialize in air conditioning, heating systems, geothermal, ventilation or refrigeration systems.

We always charge a low $49 diagnostic fee, even for an emergency call!

  • furnace repair24-hour emergency service – WE NEVER CLOSE
  • Service or replacement for any brand cooling, heating systems, geothermal, ventilation or refrigeration system
  • Preventive maintenance on all brands and types of systems
  • No overtime or weekend charges
  • Reliable, written, and guaranteed quotes
  • A variety of replacement systems and equipment to fit your budget
  • Billing by the JOB, not by the hour
  • Cost-benefits analysis for energy savings
  • Attractive financing alternatives
  • Dependable quality service from a TN certified drug free and background checked workforce
  • Friendly and professional customer support
  • The most up-to-date products and services available
  • Red Carpet Treatment – Red Booties

Call us today if you need:

  • Energy Saving Tune-Up – reduce current power consumption by up to 50% (Semi-Annual)
  • Duct Blast (Duct Leak Search) – stop paying to condition your crawl space or attic
  • Recharge low refrigerant
  • Whole House Duct Decontamination
  • Indoor Air Quality Test
  • Duct Cleaning
  • Thermostat Installation
  • Maintenance on Commercial Ice Machines and Walk-In Coolers
  • And much more

We also carry many accessories and options, including, but not limited to:

  • Indoor air cleaners and sterilization systems
  • Duct cleaning services
  • Humidifiers and Dehumidifiers
  • Standard, Medium and High Capacity Air Filters
  • Carbon Monoxide Detectors
  • Energy Savings Thermostats, including cell phone accessible
  • Door security systems linked to your wireless thermostat