Sub-Zero Freezer Not Cooling in St. Augustine, FL
Unit runs but temperature stays warm — usually a compressor, condenser, or refrigerant issue. We fix this on Sub-Zero freezers across St. Augustine. Same-day service is standard here, not a rush-fee upsell.

Why your Sub-Zero freezer is not cooling
On a Sub-Zero freezer, not cooling usually announces itself like this: unit runs but temperature stays warm — usually a compressor, condenser, or refrigerant issue. Nine times out of ten it comes down to worn door gaskets bleeding cold air. Left unaddressed, food or stock can spoil within hours.
Most likely causes
- Dirty or blocked condenser coils
- Worn door gaskets bleeding cold air
- Defrost fault icing over the evaporator
- Refrigerant leak in the sealed system
Known Sub-Zero freezer weak points
- Dual compressor / sealed-system failures
- Evaporator coil frost blocking airflow
- Intermittent ice maker failures
- Control panel/board faults
Quick check — and when it's not DIY
Before booking a repair, confirm the freezer has power, the thermostat is actually set cold, and the condenser coils or vents aren't blocked by dust or stored items. Also, listen for the compressor running at all, and make sure nothing is blocking airflow around the back or bottom vents. When that isn't the fix, the cause is almost always a failed compressor or a refrigerant leak in the sealed system, and handling refrigerant legally requires an experienced technician — which is where DIY stops.
How we fix it
Our technician runs a full diagnostic on your Sub-Zero freezer and isolates the exact cause before quoting. Genuine Sub-Zero OEM parts are available through authorized distributors, and sealed-system refrigerant work must be performed by an experienced technician. You approve a flat price up front, and the work is backed by our labour and parts warranty.
Independent service experienced with Sub-Zero; factory-certified service is recommended for these luxury units, especially sealed-system refrigeration.
What St. Augustine homeowners say
on the First Coast
“Our Sub-Zero freezer quit on us and they had a technician out the same afternoon in St. Augustine. No runaround — they told me honestly what it needed and fixed just that.”
“The Sub-Zero freezer died mid-week and they had it sorted before I'd even rearranged my schedule. The tech explained exactly what went wrong before touching anything.”
“Called late at night and a tech was here by mid-morning to look at the Sub-Zero freezer. Fair price, no surprise fees, and the Sub-Zero freezer has worked perfectly since.”
Other Sub-Zero freezer problems we fix
Frequently asked questions
What's the price for a Sub-Zero freezer that is not cooling?
Most repairs for a Sub-Zero freezer that is not cooling run $150–$552 including parts and labour. The $89 diagnostic is credited in full toward the repair when you go ahead, and you get a flat quote before any work starts.
What if the same problem comes back?
We stand behind the work with a 1-year labour warranty and 6-month parts warranty — if it recurs in that time, we fix it again for free.
Do you offer same-day service in St. Augustine?
We do — St. Augustine is on our daily route, with same-day and after-hours emergency slots. The earlier you call, the better the odds of a same-day visit.
What does the call-out cost?
A flat $89 covers the on-site diagnosis and rolls into the repair price. What we quote is what you pay — no add-ons.
Get same-day service in St. Augustine.
Flat-rate pricing, 1 year labour warranty, and fast dispatch.