Tankless Water Heater Installation, Repair and Maintenance

A tankless water heater heats water only when you need it, so you don't run out halfway through a shower and you free up the space a big tank takes. Ray's Rescue Plumbing installs, repairs and maintains tankless water heaters in Santa Rosa, Rohnert Park, Petaluma and Cotati.

No-cost tankless water heater estimates. Same-day service available for repairs.

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How Does a Tankless Water Heater Work?

When you turn on a hot water tap, cold water flows through the unit, a burner or electric element heats it on the spot, and hot water comes out of the faucet. When you turn the tap off, the unit shuts down. No tank of water sits there staying hot all day.

Is Tankless Right for Your Home?

Tankless is a great fit for many homes, but not every one. Here's the honest picture:

The upsides

• Continuous hot water, no waiting for a tank to recover
• Saves floor space, since it mounts on a wall
• Often lasts longer than a tank unit with regular maintenance
• Uses energy only when you use hot water

Things to consider

• Higher upfront cost than a standard tank
• Gas units may need a larger gas line and new venting
• Electric units may need an electrical upgrade
• Needs regular descaling, especially where water has a lot of minerals

We'll look at your current setup, your household's hot water use and your budget, and tell you straight whether tankless makes sense or whether a new tank is the better choice.

No-Cost Tankless Estimates

Want to know what it would take to go tankless in your home? We'll check your gas line, venting or electrical service, recommend the right size unit and give you a price, at no cost.

Tankless Repair

Common tankless problems we fix:

• Unit won't fire or shows an error code
• Water goes hot, then cold, then hot
• Not enough hot water when more than one tap is running
• Low flow from mineral buildup

Tankless Maintenance

Minerals in the water build up inside the heat exchanger over time. Flushing (descaling) the unit on a regular schedule keeps it running efficiently and helps it last. Many manufacturers recommend it about once a year; homes with harder water may need it more often.

Tankless Water Heater FAQ

How long does a tankless water heater last?

With regular maintenance, a tankless water heater often lasts longer than a standard tank, commonly 15 years or more. Skipping descaling shortens that.

Can a tankless water heater run out of hot water?

It won't run out the way a tank does, but it can only heat so many gallons per minute. If too many fixtures run at once, the water may cool. Sizing the unit correctly for your home prevents that.

Can you replace my tank water heater with a tankless one?

Usually, yes. We'll check your gas line, venting or electrical service to see what's needed and give you a price before any work begins. The estimate is no cost.