Water Heater Replacement in Tustin

Square footage is the wrong measure. A 2,000 square foot house with two people and one with five need different tanks. The right size comes from the household's busiest hour, which a tank's first-hour rating measures; for most households a 40 or 50 gallon tank fits, and a replacement of that size is estimated at $1,600 to $2,800 installed.

For a standard tank, estimated totals commonly run from about $1,600 to $2,800 including the unit, the permit, the seismic straps and removal of the old heater. More if the size, fuel or location changes, and considerably more for tankless. Your figure is the one on the written quote.

Because the fault is at the water heater or the valve feeding it — that is exactly what a hot-side-only problem tells you. The City of Tustin's own guidance says the same: if low pressure is only affecting the hot water, there could be a problem with your water heater, and the first thing to check is that the shut-off valve near the heater is fully open. After that, the usual causes are a pilot that has gone out, a failed electric element, a tripped high-limit reset, or sediment restricting the outlet. If the cold side is weak too, it is not the heater at all — call your water supplier, the City of Tustin's Water Services Division or IRWD, whichever your bill names.

On a gas tank, a pilot that has gone out, usually because the thermocouple that keeps the gas valve open has failed. On an electric tank, a burned-out heating element or a tripped high-limit switch. On a tankless unit, an ignition fault or a clogged inlet filter. Before any of those, two checks that cost nothing: run a cold tap to make sure the problem is the hot side only, and make sure the valve on the cold line above the heater is fully open. A thermocouple or element repair is typically at the low end of the estimated $150 to $450 repair range.