Southeastern Mechanical Services, LLC has been proudly servicing the Decatur, AL area for over 22 years. We specialize in install and repair of central air conditioning and heating units for home, commercial and industrial spaces.

In addition to proper system design and installation, regular maintenance ensures optimal operation while extending system life. Repair work is often much more economical than replacement to keep large system operating and our value engineering approach assures you that we will recommend the approach that delivers the most value to you.

Our service technicians/contractors are highly skilled and factory trained, we have a wide variety of technical specialists. We are experienced in proper trouble shooting of home, commercial and industrial HVAC systems. We are your dedicated heating and air conditioning company.

FREE Estimates on all HVAC, Air Conditioning Install, Repair & Maintenance Services:

  • Air Conditioning Repair & Installation
  • Heater Repair & Installation
  • HVAC Repair
  • HVAC Install
  • Duct installation
  • Refrigerator recycling
  • Air duct/vent cleaning
  • Coil cleaning
  • Freon leak repair
  • Heaters and ACs serviced
  • Wall air conditioner install
  • Preventative maintenance
  • Heating inspection
  • Service contracts
  • Furnace cleaning
  • Energy saving measures
  • Leak detection
  • Multi-zoning systems

Quality reliable heating and central cooling from the top brands:

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A.M.P. up your HVAC services with the new Advantage Maintenance Plan:

Sign up today and receive:

  • No overtime charges on service requests
  • 15% OFF on all repair parts
  • Priority service scheduling (over non-member service requests)
  • FREE 1-year membership when SMS upgrades covered equipment

Contact for further details.

Servicing Decatur AL and All Surrounding Cities:

FREE in-home/business consultations for all HVAC work and more. Click Here or Call today, 256-686-3444.

SMS is your Central Air Conditioning Company. Demand the best, Call SMS!