My Sub-Zero fridge side is warm but the freezer is cold — what is that?
On a Classic BI that split almost always means the fresh-food evaporator fan has quit or its damper is stuck. The freezer keeps its own evaporator running, so it stays at 0°F while the fridge climbs. We confirm with a clamp meter on the fan and a temperature log before quoting — usually a fan motor, not a sealed-system bill.
How long can I leave food in a Sub-Zero that has stopped cooling?
A loaded built-in holds safe temperature about four hours with the doors shut, less in a warm Fruit Cove garage install. Move anything you cannot replace to a cooler now and call dispatch. We carry common BI fan and board parts, so a first-visit fix is realistic when the diagnosis lands on a stocked part.
Is it worth repairing a fifteen-year-old Sub-Zero refrigerator?
Most of the time, yes. A 2008-2015 BI unit was built to run past twenty years, and a fan, valve, or board swap costs a fraction of an $11,000-plus built-in replacement. Sealed-system failures are the one case we walk through carefully — the repair-or-replace math turns on the cabinet, not the badge.
Do you service the newest Sub-Zero CL and Designer refrigerators?
We do out-of-warranty work on them and routine maintenance any time. But 2022-and-newer CL, DET, and DEC units usually still carry the factory warranty, and those claims belong with Sub-Zero Factory Certified Service. Tell us your model and serial and we will confirm coverage before you spend a dollar.
How fast can a technician reach St. Johns for a warm refrigerator?
Dispatch stages off Race Track Road, so Julington Creek, Durbin Crossing, and Fruit Cove are short hops. We hold two-hour arrival windows weekdays from 7:30 to 7 and Saturdays until 2, route around the school-pickup crush, and text when the technician leaves the prior stop.
Why does my Sub-Zero run constantly but never get cold enough?
A unit that runs nonstop yet drifts above 38°F is almost always fighting airflow, not refrigerant. A condenser packed with garage dust in a CR-210 install, a stalled condenser fan, or a torn gasket pulling in warm air all make the compressor work without ever satisfying. We clean and meter airflow first; that clears most EC 50 histories before any sealed-system talk.
Water is pooling under my Sub-Zero refrigerator — is that a leak?
Usually it is a clogged defrost drain, not a refrigerant or supply leak. Defrost melt that cannot reach the evaporation pan refreezes, then thaws and runs out the bottom. We flush the drain line, check the drain heater that keeps it open, and confirm the pan is clearing. A cracked water line or inlet valve is the less common second cause we rule out.
Should I just set my Sub-Zero colder to make it run better?
No. Both compartments are designed around 38°F fresh-food and 0°F freezer, and forcing the dial lower masks a fault while running the compressor harder. If the cabinet cannot hold spec at the normal setting, something mechanical or electronic is wrong. Cranking it down on a warm fridge often just freezes the lettuce while the real problem keeps growing.
There is condensation or sweating between the doors — is the fridge failing?
Usually it is the gasket and the humidity, not the cooling. Year-round St. Johns moisture hardens a door seal after three or four summers, so warm, wet air leaks in and condenses on the cold metal between the doors. We seal-test the gasket and check the mullion heater that keeps that area dry; a $300-to-$500 gasket replacement clears most of these without any sealed-system work.
My Sub-Zero is humming louder than it used to — should I be worried?
A new hum or rattle is worth a listen but rarely an emergency. It is most often a condenser fan working harder against a dust-packed coil, or an evaporator fan bearing starting to wear. We locate the noise by compartment and meter the fan draw, then clean the coil or replace the motor. Catching it early keeps a $300 fan job from turning into an over-run compressor.
