SUB-ZERO SPECIALISTS · NORTH ATLANTA & NORTH GEORGIA
Sub-Zero Not Cooling? Same-Day Sub-Zero Repair
A warm Sub-Zero refrigerator or a freezer that stopped freezing is the most common call we get from Sub-Zero owners. Appliance Tech Pros has repaired Sub-Zero built-in, column and PRO units across North Atlanta and North Georgia since 2014, using genuine OEM parts. Call our Sub-Zero line at (470) 805-1621 for same-day service.
Signs Your Sub-Zero Needs Service
- Refrigerator side is warm but the freezer still works
- Freezer stopped freezing or food is softening
- Both sides warm, compressor not running
- Service light, temperature alarm or error message on the display
- Unit runs constantly but never reaches temperature
- Ice buildup on the back wall or around the door
- Loud fan, clicking or buzzing from the top grille
What Usually Causes a Sub-Zero to Stop Cooling
Sub-Zero refrigerators use separate cooling systems for the fridge and freezer on most models, so one side can fail while the other keeps working. These are the causes we find most often:
- Dirty condenser coil. The top-mounted condenser collects dust and lint, and a clogged coil is the single most common cause of poor cooling.
- Condenser or evaporator fan motor. A failed fan stops air from moving across the coils.
- Start relay, capacitor or compressor. If you hear clicking but the compressor never starts, it’s usually electrical.
- Defrost problems. A failed defrost heater or sensor lets ice block the evaporator.
- Clogged drain. Water backs up, freezes and causes leaks and ice buildup.
- Door gasket or hinge. A worn seal lets warm air in and the unit can’t keep up.
- Control board or temperature sensor. Wrong readings mean the unit never calls for cooling.
Models We Repair
We service every Sub-Zero line, including Classic built-in models (BI-36, BI-42, BI-48 and the older 500 and 600 series such as the 532, 611, 632, 642 and 650), Designer column and integrated units, and PRO 48 refrigerators. See our Classic, Designer and PRO Series pages.
What to Do Before We Arrive
- Move food from the warm side into a cooler or the working side
- Check that the unit has power and the breaker hasn’t tripped
- Note any error message or light on the display
- Find the model and serial number (usually on the ceiling of the refrigerator compartment) and text it to us with your request
Prevent It From Happening Again
Most Sub-Zero cooling failures start with a dirty condenser. We recommend a professional condenser cleaning and system check every 6 to 12 months. Ask about our Sub-Zero maintenance visit when you call (470) 805-1621, or see all Sub-Zero repair services.
Locations
Sub-Zero repair across North Atlanta and North Georgia, including:
- Alpharetta
- Atlanta
- Braselton
- Brookhaven
- Brookhaven
- Buckhead
- Buford
- Chastain
- Chestnut Mt
- Cumming
- Dacula
- Decatur
- Decatur
- Duluth
- Dunwoody
- Dunwoody
- East Cobb
- Flowery Branch
- Gainesville
- Grayson
- Holly Springs
- Hoschton
- Jefferson
- Johns Creek
- Lawrenceville
- Lilburn
- Marietta
- Milton
- Milton
- Mt Vernon
- Norcross
- North Metro
- Oakwood
- Peachtree Corners
- Peachtree Corners
- Redan
- Roswell
- Sandy Springs
- Snellville
- Sugar Hill
- Sugar Hill
- Suwanee
- Tucker
- Winder
- Woodstock
Request Sub-Zero Repair
What Our Customers Say
4.9 ★ · Based on 782 Google reviews
Thomas Branch
July 3, 2026
★★★★★
Really enjoyed working with Tony B! He had a tough task and handled it flawlessly. Thanks, Tony!!!
Coral Tampio
July 2, 2026
★★★★★
Great customer service.. seeing representative now .. please reach out to them
Nick Huddleston
July 1, 2026
★★★★★
Very professional. Solved my dryer problems. Thanks!
Carol Smitherman
June 24, 2026
★★★★★
Kevin has great service, he was on time for repairing my refrigerator. He worked with me on getting the price I could afford. I do recommend this service.
Debby Tingle
June 15, 2026
★★★★★
Great service, quickly done! I'm happy to have working oven and fridge now! Kevin was great!
Charlie Held
June 12, 2026
★★★★★
Anna BRONER
June 11, 2026
★★★★★
Kevin did an outstanding job repairing my refrigerator. Very professional and very knowledgeable. I am very happy with his job.
Cynthia Crayton
June 10, 2026
★★★★★
Kevin the tech was very knowledgeable and diagnosed the problem with no difficulty. Thanks for the quick service
Michele Deedy
June 10, 2026
★★★★★
Kevin did a great job diagnosing my appliance issues today. He was able to fix three problems and gave great advice for the fourth problem. This is the third time I have called on Appliance Tech Pros to help me out! I will use the for all of my appliance repairs. You should too.
James Miller
June 6, 2026
★★★
I would like to give Appliance Tech Pros a 3.5/5 stars and the technician, Kevin, 4/5 stars. Kevin was very communicative and arrived within the expected window. On top of that, he fixed our dryer. Sadly, that is high praise for a service technician. My only complaint is that I suggested he bring both parts that could be the issue. He only brought one and had to make a second trip out to fix it. Appliance Tech Pros as a company was also communicative and set reasonable expectations. That said, they offer a $20 discount for a favorable Google review. Now I'm side-eyeing all their positive reviews… Bottom line/TL;DR – would I hire them again? Maybe. Kevin was great. Discounts for good reviews not so great.
