Condensation on a Sub-Zero's exterior, between doors or on a glass door usually comes from a torn or flattened gasket, a door that doesn't close fully, a failed mullion or anti-sweat heater, or a failed glass door heater. Monsoon-season humidity can make it worse.
Las Vegas air is usually dry, so condensation on a Sub-Zero almost always points to a sealing or heater problem.
Check These First (5 Minutes, No Tools)
- Inspect the gasket all around each door.
- Check that doors close on their own.
- Note whether moisture is on the glass, the frame or between doors.
Most Common Causes
| Cause | What happens | Fix |
|---|---|---|
| Gasket | Cold air escapes and chills the surface. | DIY / Pro |
| Door alignment | Gap in the seal. | Pro |
| Mullion / anti-sweat heater | Frame surface gets too cold. | Pro |
| Glass door heater | Fogged glass. | Pro |
How We Fix It
We check seals, alignment and heater circuits and replace failed components.
When to Call a Technician
If the basic checks above don't solve it within a few hours, or if you hear repeated clicking, see an alarm or service indicator, or notice water under cabinetry, call us at (725) 237-7399. The $75 service call is credited toward your repair, repairs carry a 1-year parts and 180-day labor warranty, and we stock the Sub-Zero parts behind most of these failures.
Typical Cost
| Repair | Typical range |
|---|---|
| Door or drawer gasket replacement | $295 – $595 |
| Hinge / door closer repair & alignment | $295 – $595 |
Typical totals for parts and labor in the Las Vegas area. The $75 service call is credited toward your repair, and every repair is backed by a 1-year parts and 180-day labor warranty. Your exact price depends on the model, the part and access, and you approve a firm quote before any work begins. Full price list →
Still Not Working? We Can Help Today.
$75 service call, credited toward your repair · 1-year parts · 180-day labor warranty · EPA 608 certified · Mon–Fri 8am–7pm · Sat–Sun 8am–4pm