Emergency Water Heater Replacement in Los Gatos, CA

A leak usually means the tank, not the fitting

A puddle is the usual first sign. Before replacing a heater, the plumber checks where the water is coming from. A leak at the cold inlet, the hot outlet or the temperature and pressure relief valve can often be fixed in place. Water seeping from the bottom of the tank, or weeping from the jacket, usually means the steel shell has rusted through.

That second case ends in replacement. Once the inner tank has corroded, there is no sound repair, and the leak only grows. Look at the base and the seams, and mention to the dispatcher whether the water is coming from the top or the bottom. The answer shapes what the plumber brings.

No hot water, and when that means replacement

Not every cold shower means a new tank. A gas unit with a dead pilot, a tripped electric breaker or a failed thermostat can often be corrected. A repair visit starts there.

Replacement becomes the better call when the tank leaks, when the unit has run well past its expected life and keeps failing, or when sediment and corrosion have reduced hot water noticeably. If you hear rumbling or popping while it heats, sediment is building on the bottom. A flush may help a younger tank, but not one with a rusted base.

Repair or replace your water heater?

Use this as a starting point, then let a plumber confirm on site.

Age, condition and fuel type are checked before a recommendation is made.

Choosing the replacement unit

Capacity should match your household, not the old label. A family that has grown may need a bigger tank, while an empty nest can often step down. We look at how many people use hot water at once, the fuel you have and the space available.

Gas, electric and heat pump water heaters each fit different homes. A gas tank needs proper venting and a gas supply. An electric unit needs the right breaker and wire. A heat pump unit needs air space and a condensate drain.

Moving from gas to a heat pump is something to discuss, not assume, and we do not make rebate claims. If you want to talk about a tankless unit, see tankless water heater service.

Los Gatos permit and bracing rules

The Town of Los Gatos requires a permit to replace a water heater with the same type in the same location, and it can be applied for online. If the type changes, such as gas to electric, or the unit moves, the quick replacement application does not apply and a regular building permit is needed. The Town takes permit applications through its online portal only, and you should ask who files the permit and whose name goes on it.

Bracing is part of the job. The Town's handout calls for at least two restraints, one in the upper third and one in the lower third of the tank. Each strap is screwed into a wall stud with a screw at least a quarter inch in diameter, driven at least half an inch into the wood, with a washer. Ask to see the straps before the plumber leaves.

Replacement visits go faster when the plumber knows the access, so mention a steep driveway or a narrow road off Highway 17. We replace heaters across Santa Clara County in ZIP codes 95030, 95031, 95032 and 95033.

What hard water does to a new tank

San Jose Water's 2025 report lists mountain supply at 151 ppm hardness, Valley Water treated supply at 99 ppm and groundwater at 288 ppm. Which source reaches your street varies, so test your tap before assuming. Harder water builds scale on the bottom of a tank faster, which hurts efficiency and shortens life.

The practical step is to ask your plumber about the anode rod and an annual flush schedule. If scale is a problem across the house, water softener and filtration is worth a conversation. Not every home needs it, and a test tells you where you stand.

Same-day replacement and what happens on the visit

Same-day appointments are available when schedules allow, and we do not promise a set arrival time. When the plumber arrives, they drain and disconnect the old tank, haul it out, set the new one on a drain pan where the space allows, and fit new flexible connectors and shutoff valves. They add a discharge line on the relief valve, strap the tank, check venting or wiring, and test for leaks and temperature before they go.

Flood damage and gas smell after a tank fails

A tank that lets go can release its full capacity onto the floor, and the water rarely stays in the closet. Check the wall behind the heater, the carpet in the next room and the ceiling below if the heater sits upstairs. Wet drywall and baseboards should be dried quickly, and a restoration company can advise on that.

Take photos before you mop, keep the failed tank until your insurer has seen it if they ask, and tell the plumber about any damp areas so they can check nearby supply lines for the same corrosion.

If you smell gas near a gas water heater, leave the building at once. Avoid light switches and flames, call 911 from outside, and then call your gas utility. PG&E advises the same sequence and notes that if the gas is shut off, PG&E must be called to turn it back on. Call a plumber only after the gas company clears the house.

What affects the price of a new water heater

We give you a clear price before work starts. These are the pieces that decide it.

On insurance, a sudden tank failure that floods a room is often covered for the water damage, while the heater itself, wear and slow leaks often are not. Policies differ, so check yours.

Want your real number? Call (855) 575-2890. A clear price is given before work starts.

If you live near Saratoga

Homes around Saratoga often have older heaters in tight closets, which affects the plan. Read how we cover the area on our Saratoga plumbing page. If you are planning ahead rather than reacting to a leak, water heater installation covers the scheduled version of this job.

Water heater replacement questions in Los Gatos