Why SeaTac maintenance calls look the way they do
The maintenance visit is the one that prevents the other five. In SeaTac we drain, flush the lines, open the cabinet and inspect it dry, refill, and balance the water for Seattle's soft supply — calcium up, alkalinity up, pH held — with the numbers written down for you.
SeaTac water comes through Highline Water District, largely Seattle Cedar River supply — about 1.5 grains, soft and under-buffered — so the fill needs calcium and alkalinity brought up on purpose. That is the whole reason a SeaTac refill needs a deliberate dose of calcium and alkalinity — without it the heater and the seals pay for the softness.
SeaTac tubs are mostly mid-size family spas — Cal Spas, Master Spas, Hot Spring, Sundance — at the age where heaters and circ pumps come due. We work Angle Lake, McMicken Heights, Bow Lake, Riverton Heights, North SeaTac and the rest of SeaTac (98188, 98198).
What SeaTac owners describe on the phone
Foam, cloud or a smell chlorine will not fix
Biofilm in the plumbing. A line flush before the drain clears it; a drain alone does not.
Filters pack up every few weeks
Needles, pollen and body oils. A two-filter rotation with a monthly soak keeps flow codes away.
Cover heavier every year
Waterlogged foam. We weigh it and tell you when it is costing more in heat than a new cover.
Water will not stay balanced
Low alkalinity in soft water. Raised to 80–120 ppm, the pH stops swinging.
SeaTac note. SeaTac is the south end of the route, grouped with Burien and Tukwila; morning calls here usually get an afternoon window the same day.
How the visit runs
- A call half an hour before we arrive — about 20 minutes south of downtown on I-5 or Highway 99
- Diagnosis with a meter, then one written price you approve
- Calcium and alkalinity checked for Highline Water District water
- Special-order parts arrive the next business day in most cases
- If the tub is not worth fixing, we say so
Scope, plainly: the spa and what lives inside its skirt. New circuits, supply plumbing and setting new tubs go to an electrician or a dealer.