Losing hot water is disruptive in a way few plumbing problems match. Whether your tank is leaking from a failed anode rod, your pilot light won't stay lit, your electric element has burned out, or your tankless unit is flashing an error code — Masters Plumbing Service's water heater techs in Tujunga, CA arrive with the diagnostic equipment and replacement parts to resolve it same visit.
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We diagnose before we recommend. Many water heater service calls in Tujunga, CA result in a repair, not a replacement — and we're honest about which one your situation actually calls for.
Our diagnostic process isolates the failed component so we're replacing the part that actually failed — not throwing money at the unit hoping something works.
Our service trucks carry thermocouples, pilot assemblies, gas valves, upper and lower heating elements, thermostats, T&P relief valves, anode rods, expansion tanks, and flex connectors in the most common sizes. Most water heater repairs in Tujunga, CA complete on the first visit without a parts run.
We don't recommend replacement to sell a unit. We work through the repair-vs-replace math with you openly so the decision is yours, made with full information.
Every water heater installation in CA must meet current plumbing and mechanical codes — proper strapping for seismic zones, expansion tank where required by closed-loop systems, pressure-relief valve discharge piped to within 6 inches of the floor, and correct flue sizing for gas units. We pull permits where required and schedule inspections.
From a 40-gallon gas tank to a high-efficiency condensing tankless unit, we carry the knowledge and parts to diagnose and repair it in Tujunga, CA.
We test the gas supply pressure at the unit, check the thermocouple millivolt output with a meter, inspect the burner assembly for debris, and confirm proper draft on the flue. Each of these takes minutes and tells us exactly what component to replace.
Electric water heater problems nearly always trace to one of three components: the upper heating element, the lower heating element, or the thermostats controlling each. We test both elements with a multimeter for continuity and resistance, check both thermostats for correct setpoint operation, and inspect the reset button for a thermal cutout that's tripped.
Scale buildup in the heat exchanger is the leading cause of reduced performance in tankless units in areas with hard water. We perform a vinegar or citric acid descaling flush through the heat exchanger using flush kit ports — restoring flow rate and heating efficiency.
T&P replacement is a straightforward repair, but the discharge pipe must be correctly routed per code. We replace the valve with a listed unit rated for the tank's BTU input and install or verify the discharge piping before leaving.
The sacrificial anode rod — typically magnesium or aluminum — corrodes preferentially inside the tank, protecting the steel tank lining from rusting. When it's depleted, the tank wall begins corroding instead. Most anode rods last 4–6 years in normal water conditions; hard water or water softener use accelerates depletion.
We also convert tank-to-tankless installations where the existing infrastructure supports it, including proper gas line sizing for tankless BTU demand and dedicated electrical circuit installation for electric tankless units.
We don't guess at water heater problems. Each call follows a structured diagnostic process that identifies the specific failed component before any repair recommendation is made.
No hot water at all? Rusty water? Pilot won't stay lit? Popping or rumbling from the tank? Each symptom points to a short list of likely causes. Describing what you're seeing helps our tech arrive with the most probable replacement parts already on the truck.
Our tech tests the specific components implicated by your symptoms — not a general inspection of everything. Gas units get thermocouple output tested, gas valve operation checked, pilot assembly inspected. Electric units get both elements and thermostats tested with a meter.
You receive a flat-rate quote for the repair and, if relevant, a replacement option with installed price for comparison. We walk through the numbers with you — repair cost vs. unit age vs. replacement cost — and let you decide.
Approved repairs happen immediately. If we're replacing the unit, we drain and disconnect the old tank, install the new unit with proper flex connectors and expansion tank where required, verify the flue or venting, and test the unit to confirm recovery temperature.

Gas water heater stopped heating on a Thursday evening. Masters Plumbing Service had a tech out Friday morning who tested the thermocouple — millivolt output was at 12mV, well below the 25mV minimum the gas valve needs to stay open. He replaced the thermocouple and pilot assembly in about 45 minutes, total cost was well under $200. Didn't try to sell me a new heater at all — straightforward, honest diagnosis.
{Electric water heater wouldn't recover — we'd get about 10 minutes of hot water and then cold. Masters Plumbing Service's tech identified the lower heating element had failed. He drained the tank, replaced the element and lower thermostat while he was in there, and restored full recovery capacity. Explained the difference between upper and lower element function which I'd never understood before.|Woke up to the floor drain running under our water heater — the T&P valve was dripping continuously. The tech identified it wasn't just dripping from normal thermal expansion but was a valve that had corroded open. Replaced the valve, re-routed the discharge pipe to code, and verified tank pressure was within normal range before leaving.}
Called about a tankless that had lost ignition — error code on the display. Tech checked the flame rod, found it had a cracked ceramic insulator causing an intermittent short. Replaced the igniter assembly, unit fired clean on the first restart. He also checked the venting for any obstructions since venting issues can cause similar ignition faults.

Masters Plumbing Service dispatches water heater technicians across Tujunga and the surrounding Tujunga, CA region. Same-day service is available for most repair calls — call to check today's availability.

Same-day Water Heater Repair service available in Tujunga, CA. Call now to schedule.
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