The repair against the replacement
| What it takes | Range |
|---|---|
| Compressor or sealed-system repair | $1,510–$3,440 |
| Buying another one instead | $12,710–$21,440 |
That last row buys a like-for-like built-in on its own, with nothing allowed for fitting it or for the joinery around it. Every figure above it is being weighed against that, which is why a structurally sound cabinet is usually worth putting right even when the quote makes you wince.
Most cabinets brought to us as suspected evaporators have a frost problem instead. The coil ices over, air stops moving through it, the compartment drifts, and the machine behaves exactly like one losing refrigerant — which is why the word corrosion usually arrives before any gauges do.
What separates the two
A defrost fault leaves ice on a coil and a circuit still full. A leak leaves a circuit that cannot make cold anywhere. The manufacturer’s pressure table draws the line: low on the low side and low on the high side together is the signature of a leak, and clearing frost by hand will never change that reading.
Where the leak sits is the decision
An evaporator is not one object in one place. There is the coil, mounted inside the compartment behind its cover, and there is the tubing running to and from it. A weep at a reachable joint is a repair: the section is made good, the high-side filter-drier is replaced as the manufacturer requires, solder-on process valves are used because the bolt-on kind leak in their turn, and the charge goes back to the weight on the plate.
A coil corroded through inside the foamed wall is the other case. Reaching it is disproportionate work on a machine of this age, and that is where the last row of the table above stops being theoretical.
What the air here does to hardware
Our sector runs from the flats near the ocean up over the hill into the Valley, and the two ends do not age alike. Machines close to the water wear it on exposed metal — fittings, pipework, fastenings behind the grille — while Encino and Northridge lose condensers to dust and heat instead.
The condition that decides it
Reachability, and whether this circuit has been opened before. A first leak in pipe somebody can put a torch to, on a cabinet whose doors and joinery are sound, earns every part of the band above. A corroded coil inside the wall, on a circuit that has already emptied once, is where replacing wins.
What we usually find
-
A coil that frosts unevenly and a compartment losing ground, with no code on the panel
Frost and airflow rather than tired metal, more often than not. A blocked drain or a defrost fault ices a coil solid and imitates a failing evaporator closely enough to fool a quote.
Defrost heater, thermostat or sensor $280–$640
-
Both gauge readings low on a machine that runs without pause and never reaches temperature
A leak somewhere in the circuit, which is exactly what that pair of pressures indicates in the manufacturer's own table. Where it sits is then the entire question.
Compressor or sealed-system repair $1,510–$3,440
-
Pale crusting on the tubing where it leaves the cabinet, a few miles inland from the water
Corrosion on pipework somebody can actually reach, which is the good version. Reachable tubing is repaired in place; a coil foamed into the wall cannot be got at the same way.
Compressor or sealed-system repair $1,510–$3,440
Which of these it is gets settled at the visit, before a part is ordered — Sub-Zero Repair Pro Los Angeles, (310) 844-1973.
Which way it points
Repair it if
- The leaking section is pipework that can be reached without cutting the cabinet open
- Pressures have been taken and the fault has been named rather than assumed
- The doors, the liner and the joinery around the machine are all still sound
- This is the first time this circuit has been opened
Replace it if
- The corrosion is on the coil foamed into the wall of the cabinet itself
- This is the second charge lost from the same circuit of the same machine
- Water from the fault has been standing under the unit long enough to do damage
If your machine sits between the two columns, that is what the diagnosis is for: Sub-Zero Repair Pro Los Angeles measures it first and gives you the figure before any of it is committed to — (310) 844-1973.
Follow-ups
- Can a leaking evaporator be patched instead of replaced?
- It depends entirely on which part of it is leaking and whether that part can be reached. Accessible pipework is a different job from a coil buried in the cabinet wall, and the two land far apart on effort. Sub-Zero Repair Pro Los Angeles reads the pressures first and then tells you which one you have.
- Does living near the coast make this more likely?
- Salt in the air is hard on metal, and the machines we open in Mar Vista and Culver City wear it more visibly than the ones in Encino. It shows on exposed fittings and pipework long before anything inside the cabinet is affected, which is why an early look is worth booking on (310) 844-1973.
- Written by
- Yuki Tanabe
- Role
- Refrigeration technician — controls and sensors
- In the trade
- 18 years in the trade
