Twenty years on, in Gilbert.
Sub-Zero publishes its own figure: its products are designed to last about twenty years on average. A large share of Gilbert went up in the early 2000s with the appliances that came with the house, which means a great many built-ins here are arriving at that number now, together. The useful thing to know is that a design life is an average and not an expiry date, and that the fault decides this far more than the year does.
The Figures Behind This Page
| What it is | Where it comes from | |
|---|---|---|
| Sub-Zero design life | about twenty years on average | the maker’s published figure |
| What moves it | use, ambient temperature, maintenance, repair history | listed in the same sentence |
| What fails at that age | gaskets, fans, controls | none inside the sealed circuit |
| Diagnostic visit | $119, waived with the repair | the fault named, in writing |
| Replacement | $10,000–$20,000 for the machine alone | before anyone installs it |
What twenty years actually means
It means an average, so a machine at eighteen is not overdue and one at twenty-four is not a miracle. Sub-Zero lists what moves the number in the same sentence it gives it: varying levels of use, ambient temperatures, maintenance, repair history, and the mechanical failure of individual components. Two of those five are within an owner’s control, and one of them is the reason this page reads differently in Gilbert than in Oregon.
It also means the number is not a verdict. Nothing switches off at twenty. What changes is which parts are likely to have failed, and at that age they are almost always the ones that have been moving or sealing all along.
What has actually worn out
Not the expensive half. In a house that has kept the same family since it was built, the count is the story: a door pulled open perhaps a dozen times a day for twenty-three years, a fan that has started and stopped with every cooling cycle in all of them, a control board that has never once been switched off. Those three are what a twenty-year call is usually about, and all three sit outside the refrigerant circuit.
The refrigerant circuit ages on a different clock. It is sealed, nothing in it rubs against anything except inside the compressor, and there is no equivalent of a hinge to wear out. When it does give out on a machine this old the cause is nearly always upstream of it: a joint that has been weeping quietly for years, contamination left behind by work done a decade ago, or a compressor tired by summers of running longer than the design assumed.
The short list that really ends one
Age is not on it. Two things are. The first is a part nobody makes any more, which is a question about the series rather than about the year, and it is answered from the rating tag in minutes. The second is a component that was never replaceable to begin with, and GE names one: on a Monogram the condenser loop is copper set into the cabinet in foam, and its guide calls it not serviceable.
Everything else is arithmetic, and here it usually favours keeping the machine. Set $119 to find out, plus $500–600 of typical labor and the part, against a new built-in of this class: $10,000 at the bottom and $20,000 at the top, for the machine by itself, with the fitting still to pay for. And the opening it has to go into was sized in 2003 around whatever is standing in it now.
Questions
Is a twenty-year-old built-in worth repairing in Gilbert?
Usually. The maker’s own figure is a design life of about twenty years on average, and what tends to have gone by then are the parts that move and the parts that seal. Putting those right on a cabinet that is otherwise intact is a normal afternoon rather than a rescue.
How do I find out how old ours is?
The serial on the rating tag answers it, and each maker codes it differently. Viking’s 2012 service manual has the serial opening with the date it was built, as month, day and year. GE codes a Monogram with two letters for month and year, and because those letters cycle every twelve years they leave two candidate years, with the design of the unit deciding between them. Photograph the tag once and the question never comes up again.
What would make you say replace it?
Two answers only: a part that has gone out of production, or a fault in the one component GE says cannot be serviced, the Monogram condenser loop set into the cabinet in foam. The year on the tag is not an answer by itself. And since we do not sell refrigerators, there is nothing waiting to be sold to you in place of a repair.
Does Gilbert water shorten the life of the machine?
Gilbert publishes 8 to 10 grains per gallon, the softest of the five valley utilities that publish a figure, so water is less of the story here than it is in Chandler or Mesa. Ambient temperature is the local factor that matters, and Sub-Zero names it among the things that move its published design life.
What to do at twenty years that is not a repair
Three things, none of which needs us. Clean the condenser on the short interval: Sub-Zero asks for it to have been done inside three months when frost is the complaint, which is stricter than the six to twelve months it allows elsewhere, and a twenty-year-old machine in this valley is the case for the strict figure.
Inspect the gaskets for tears, rips or dry rot, which is Sub-Zero’s own instruction, and replace any that have gone. On a machine of this age the gasket has opened and closed tens of thousands of times, and it is the cheapest part on the list of things that decide how the next five years go. Then give any change twenty-four hours before judging it: that is the interval Sub-Zero asks for, and a verdict reached the same evening is not one.
Terms
$119 to diagnose, waived with the repair; one fixed price approved before anything is opened. In full · what the visit consists of.
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