DECATUR, AL · FAMILY-OWNED · 12+ YEARS
AC Out in the Alabama Heat? Furnace Down in January? We Answer 24/7.
Southeastern Mechanical Services fixes, installs, and maintains heating and air conditioning for homes, businesses, and industrial facilities across Decatur, Athens, Hartselle, and North Alabama. Free estimates on all work. Licensed, Bonded & Insured.
24/7 LIVE CUSTOMER SERVICE LINE · FREE ESTIMATES · TVA QUALITY CONTRACTOR
OUR SERVICES
Residential, Commercial & Industrial HVAC — All Under One Roof
Air Conditioning
AC units, ductless mini-splits, split-system installs, and emergency repairs when your system goes down in the Alabama heat.
Heating & Furnaces
Furnaces, heat pumps, and electric heating — installed, repaired, and tuned up before the cold snap hits.
Cooling & Refrigeration
Air purification, ventilation, thermostats, and specialty cooling for residential, commercial, and industrial spaces.
ADVANTAGE MAINTENANCE PLAN
Stop Paying Emergency Rates. Join the A.M.P. and Never Wait in Line Again.
AMP members get:
- 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
LICENSED BONDED INSURED 24/7 LIVE SERVICE FREE ESTIMATES
NORTH ALABAMA
We'll Tell You the Truth About Repair vs. Replace — Then Fix It Fast.
When your heating or AC goes down in Decatur, you don't have time for guesswork. At SMS, we diagnose the actual problem first — and if a repair makes more sense than a replacement, we'll say so honestly. Our factory-trained technicians service all major brands: Rheem, Trane, York, American Standard, Lennox, and Mitsubishi.
Catch small problems before they become $3,000 emergencies. The Advantage Maintenance Plan keeps your system running year-round — no overtime charges, 15% off parts, priority scheduling.
RHEEM TRANE YORK AMERICAN STANDARD LENNOX MITSUBISHI
SERVICE AREA
Free Estimates in Decatur, Athens, Hartselle & All of North Alabama
We provide free estimates on all residential, commercial, and industrial HVAC work throughout North Alabama. That covers installs and repairs on AC units, furnaces, heat pumps, ductless mini-splits, and electric heating — plus scheduled tune-ups, emergency calls, coil cleaning, freon leak detection, and AMP maintenance. Ask about TVA EnergyRight rebates and financing on new equipment.
Free in-home and business consultations. Call 256-686-3444 anytime — we answer 24/7 — or visit our Emergency HVAC Service page for after-hours help.
WHY SMS
EPA Certified. Factory Trained. Mitsubishi Diamond Dealer. Your System Is in Good Hands.
We're an authorized York dealer, EPA certified, factory trained, and Liebert certified — with Alabama contractor license 06219. Learn more about our full heating and cooling services.
12+ years serving North Alabama homeowners, businesses, and industrial facilities — straight talk, quality work, no runaround.
EPA Certified Factory Trained and Authorized Liebert certified AL certification: 06219
REVIEWS
What North Alabama Homeowners Say
Friendly and very professional staff! I have used them for my home and work office and will always use SMS in the future!
Madalyn Morgan We were on vacation and our unit quit. They did an emergency call and by bedtime our house was super cool. In September we had to have a new unit. Shane came out discussed our options and personally went to pick it up and brought it out the next morning. He oversaw the installation. All of the employees are courteous and professional anytime they come out.
Karen Nelson I built a small garage and needed a Heat and Air unit for it. I decided on a Mitsubishi mini split system and called about 5 dealers in my area. Not only was Shane the most knowledgeable about them he by far had the best price. He was very professional along with his staff. Lyn was always pleasant to speak to when calling the office. His crew was very fast and did a great job installing my unit. I thought I needed a 18,000 BTU unit and Shane assured me that a 12,000 BTU unit would be sufficient. He was correct, this thing cools my garage in no time and is very quiet. Knowing that I had a Mitsubishi Diamond dealer install my unit and getting a 12 year warranty gives me a great peace of mind. My hat is off to Southeastern Mechanical Service. I highly recommend them.
Ben Myers