A pool heater tends to reveal its problems at the worst possible moments: the morning before guests arrive, the first cold week of fall when the pool would otherwise be perfect, or after it's sat dormant for months and the ignition components have corroded. Common symptoms include a heater that lights and immediately shuts off, one that runs but doesn't reach setpoint, or one that displays a pressure switch or water flow error code. Gas valve problems, failed ignition control modules, degraded thermal regulators, and cracked heat exchangers all produce codes and symptoms that look similar on the surface but point to very different repairs underneath.
Pool heater repair at K&D Quality starts with confirming the actual fault rather than replacing parts by process of elimination. Raypak, Pentair MasterTemp, Hayward Universal H-Series, Jandy LXi, and Jandy JXi are all on the service list, and the components that account for the majority of failures are stocked on the truck. When a repair isn't cost-effective relative to the age and condition of the unit, full replacement is available, and new gas line runs can be handled through a licensed sub when the existing supply isn't adequate for a higher-BTU replacement. Full heater replacements run one to two days from pull to startup.
San Jose pool owners who heat their pool get more usable weeks out of the year, but that extended season puts more hours on the heater than most people account for. Pool heater repair in the South Bay often comes down to catching ignition and pressure-switch issues before they cascade—an ignition module that's borderline won't show up as a fault until it fails completely, usually in cool weather when the heater is running most. A heater that's been properly diagnosed and repaired should light cleanly, reach setpoint without cycling, and shut down without error. That's the baseline a comfortable pool season is built on.
What's Included
Every pool heater repair & installation visit includes
Raypak, Pentair, Hayward, Jandy
Gas heaters and heat pumps
Common parts stocked on truck
Full replacement installs available
Diagnostic $165
Service Area
We proudly serve San Jose, CA and surrounding areas within South Bay, approx. 20 miles from San Jose
San JoseLos GatosSaratogaCampbellWillow GlenCambrian ParkAlmaden ValleyCupertinoSanta ClaraSunnyvale
Full-service weekly maintenance on a fixed route day. Includes brushing walls and tile line, vacuuming as needed, skimmer and pump basket emptying, filter pressure check, water testing for chlorine, pH, alkalinity, cyanuric acid, and salt, and chemical balancing. Equipment is visually inspected every visit and you get a text or email if anything's off. Same tech every week, never subcontracted. Most San Jose pools fall between $165 and $235 per month depending on size and tree cover.
Diagnosis and repair on every major brand: Pentair, Hayward, Polaris, Jandy, Sta-Rite, Zodiac, Raypak. Pumps, motors, filters, valves, plumbing, timers, pressure switches, unions, and o-rings. The parts that fail first ride on our truck, so most repairs close in a single visit. We tell you what's worth fixing and what's worth replacing, with the actual cost difference in writing before any work starts.
Full pool resurfacing for plaster pools showing stains, rough spots, hollow areas, or 15-plus years of wear, and fiberglass refinishing for gel-coat fading and osmotic blisters. Process includes drain, chip-out or prep, bond coat, new plaster or gel coat, fill and start-up chemistry over the first 28 days. Typical residential job runs 7 to 10 working days plus fill time. We coordinate the whole job, no separate contractors to chase.
Service and repair on attached spas and standalone hot tubs. Heater diagnosis, circulation pump replacement, jet repair, control pack swaps, cover lifter installs, and full drain-and-refills with line flush. We work on Sundance, Hot Spring, Caldera, Jacuzzi, and most older builder-grade attached spas. If the spa shares equipment with the pool, we already know the plumbing. Most diagnostic visits run under an hour and end with a clear written quote.
Salt cell diagnosis, descaling, replacement, and full new-system installation. We install and service Pentair IntelliChlor, Hayward AquaRite, Jandy AquaPure, and CircuPool. Existing cell scaled out? We test cell output and plate condition before quoting a replacement, plenty of cells just need a proper acid bath. New install on a chlorine pool typically runs $1,800 to $2,400 installed for a residential South Bay pool, including the cell, control board, flow switch, and plumbing.
Install, program, and repair pool automation: Pentair IntelliCenter and EasyTouch, Hayward OmniLogic and OmniHub, Jandy AquaLink and iAquaLink. We set up the app on your phone, label every relay, and walk you through schedules for pump speeds, heater, lights, and salt cell. Existing system glitching? Most issues trace to a failed actuator, a stuck relay, or a wifi gateway that needs reflashing, not a full board replacement. We diagnose before we sell.
