Sub-Zero · Chicago, IL
Freezer Repair
Freezer columns, drawer compartments and undercounter cabinets — frost that returns within days, defrost cycles that never complete, iced evaporators and slow refrigerant loss.
How it gets described on the phone
- Frost rebuilding across the back wall a week after it was last cleared
- Ice cream going soft while the panel still reports 0°F
- A rattle or a rising whine that changes the moment the door opens
- Drawer that will not close square because ice has built up on the runners
What actually gets tested
- Defrost cycle forced and watched all the way through, not inferred from where the frost sits
- Defrost heater, terminator and drain tube — the three that produce frost which keeps coming back
- Evaporator fan draw and blade clearance, iced or clear
- Compartment temperature logged at the shelf against the setpoint on the panel
- Drawer alignment, runners and gasket compression on drawer-style compartments
Frost that returns within a week of being cleared is not a cleaning problem. It is a defrost or a drain problem, and clearing it by hand only restarts the clock. Soft ice cream with a panel insisting on 0°F is the other common shape: the compartment is warmer than the board believes it is, and the sensor is usually why.
What it usually costs
Ranges, and what moves you inside them
Flat $89 service call covering the visit and full diagnosis, credited against the repair once you approve it.
| Repair | Typical range |
|---|---|
| Door gasket or seal replacement | $260 – $640 |
| Evaporator or condenser fan motor | $330 – $660 |
| Defrost heater, thermostat or sensor | $290 – $630 |
| Ice maker, water valve or supply line | $260 – $820 |
| Electronic control board | $390 – $880 |
| Compressor or sealed-system repair | $1,310 – $3,000 |
Reviews
What customers said afterwards
4.9 / 5 · 1,042 reviews
Unit under the counter had frozen its own drain and was leaking onto the floor of a new build. He cleared it, warmed the line, and fitted the clip that stops it happening again.
Marcin K. · River West · December 2025
Frost was rebuilding faster than we could clear it and the compartment smelled of it. Defrost heater had failed open. He fitted a new one and vacuumed out the drain path while he was in there.
Estelle B. · West Loop · September 2025
Loud rattling every time the door shut. He found the fan striking a build-up at the back rather than a failing motor, and would not sell me the motor when the cheaper answer was the right one.
Verity L. · West Loop · May 2026
Book
Tell us what the cabinet is doing
Dispatch takes the model, the fault and the address, and books the first slot that suits the route rather than the first one on the sheet.
On site 8:00 am – 8:00 pm, seven days · dispatch answered 24/7
