Group gasket leaks: inspect the seal before setting a calendar

Watch where the water escapes

Water tracking around the top of a locked portafilter points the investigation toward the group seal and mating surfaces. It does not establish the condition of the boiler or pump. Note whether the leak appears during every extraction, with one basket, or after a particular cleaning change.

Do not force the handle farther around to compensate. If it no longer locks as it did, keep that observation for the technician. A different basket or portafilter can also change the fit and should be mentioned.

There is no single replacement date for every machine

Use the manufacturer’s maintenance instructions and the condition of the seal. A busy commercial group and a home machine do not necessarily age a gasket at the same rate. We avoid assigning a universal month count without the model and service history.

Routine cleaning should follow the operator guide after the machine is safe to handle. A hardened, damaged, or incorrectly fitted seal needs assessment. Do not pry against hot metal or assume an aftermarket gasket has the right dimensions because its package says “espresso.”

What we check before replacing it

We inspect the seal, its seating area, and the portafilter’s fit. If replacement is needed, it must suit the group. We then check the reported leak after the work. Where water originates inside the cabinet, we investigate that separate source rather than attributing every puddle to a group gasket.

Tell us the model and whether another part was recently fitted. Pickup, bench evaluation, and return are available for accepted coffee equipment; the model-specific deposit and warranty terms appear below. Consumables have their own warranty period.

Pickup, assessment, and return

Deposits: standard home $200; commercial espresso $200 to $450; Miele and home La Marzocco $200; Olympia Express $250; commercial La Marzocco $250 to $550. Additional bench work is $150 an hour, or $175 for Miele and La Marzocco.

The deposit pays for collection, bench diagnosis, and delivery back to you. It is not a credit against the repair charge. We seek your approval for the proposed repair.

Allow up to a week for diagnosis. Most repair jobs run 3–4 weeks; confirm the status of your own machine with us.

Repair coverage: parts 6 months; labor 6 months; consumables 90 days. A return of the same repaired fault is corrected without another charge.

Franke uses on-site diagnosis instead: A400 $150, A800 $200, A1000 $250. Other Franke models are confirmed at booking.

For Bunn connected to the building plumbing, the on-site diagnostic is $99, credited toward repair. Countertop Bunn bench pricing is confirmed at booking. Frozen-beverage machines receive a $99 on-site diagnostic credited toward repair, with a warranty from 3 months to 1 year depending on the repair.

(925) 977-8995 · Tell us the model and the fault when you book.

Before you book

Should every gasket be changed on the same annual schedule?

No. Follow the model instructions and have the actual seal and fit assessed when leakage or wear appears.