24-Hour Tankless Water Heater Repair in Portland, OR

Brands and faults we handle

We service every major tankless system, gas and electric:

• Rinnai, Navien, Noritz, Rheem, Takagi, and Bosch
• Ignition, flame-loss, and overheating codes
• Scale buildup, weak flow, and temperature swings
• Venting, intake, and condensate faults
• Flow sensors, inlet filters, and control boards

Maintenance beats emergencies

An annual descale costs a fraction of an emergency repair and adds years to the unit. We can set a reminder cadence and, if a unit is finally done, handle a replacement or a switch to a tank system.

How often should a tankless water heater be descaled?

Once a year is the rule of thumb, and in Portland's mineral-rich water, sticking to it matters. Scale builds up on the heat exchanger faster here than in soft-water regions, and skipping the annual flush is the single most common reason a tankless unit starts throwing error codes, loses efficiency, or fails early. If your unit has never been descaled and it's a few years old, that's the first thing to schedule — it often clears up complaints on its own.

Why isn't my tankless getting hot enough?

Lukewarm or fluctuating water usually points to scale buildup, a flow rate too low to fully fire the burner, a partially clogged inlet filter, or undersizing for the number of fixtures running at once. We check the flow sensor, descale the heat exchanger, clean the filter, and confirm the unit is sized for your demand — most "not hot enough" complaints trace back to one of those.

Can a tankless water heater run out of hot water?

It won't run out the way a tank does, but it can fall behind if you exceed its flow rating — say, two showers plus the dishwasher on a unit sized for one or two fixtures. That feels like running out, but it's really a sizing or flow issue. We can confirm whether your unit is right-sized for your household and recommend a fix if it's being asked to do more than it can.

How long do tankless water heaters last?

With regular descaling, a quality tankless unit lasts 15 to 20 years — roughly double a standard tank. That longevity is a big part of their value, but it depends on maintenance: a neglected, scaled-up unit can fail years early. Keeping up the annual flush is what turns a tankless into a two-decade appliance.

Is a tankless water heater worth it in Portland?

For many homes, yes — endless hot water, a smaller footprint, lower standby energy loss, and a long lifespan. The trade-offs are a higher upfront cost and the need for annual descaling in our hard water. If your old tank just failed and you're weighing the switch, we'll size both options and give you honest numbers so you can decide; see water heater installation.