Water Heater Repair
Find out why the hot water stopped, leaked or turned noisy and whether the tank is worth saving.
Hot water and water quality
Tankless Water Heater Service in Peoria
A tankless heater heats water as it moves through, so scale and flow problems show up differently than they do in a tank. Regular service keeps one running as it should.
Tell the dispatcher the brand, the error code if any and what the unit is doing.
Signs a unit needs service
- An error code on the displayMost units show a code that points toward the cause.
- Lukewarm or fluctuating waterThe temperature swings or never reaches the setting.
- Reduced flowHot water runs weakly even though cold water is fine.
How a tankless unit differs
Water flows through a heat exchanger and is heated on demand. There is no stored supply to run out, but the unit needs enough flow to ignite, and it needs adequate gas or power to heat quickly.
Because everything passes through a small exchanger, mineral scale does more harm than it does in a tank. That makes descaling the main piece of upkeep.
Descaling and flushing
Service involves closing the unit's valves, connecting a pump and a small reservoir and circulating a descaling solution through the heat exchanger. The unit is then flushed with clean water, and the inlet screen is cleaned.
The right interval depends on your water. In mineral-rich areas, an annual flush is common, and the unit's manual gives the manufacturer's guidance.
Cost
What affects the price of tankless service
Service is priced by the work needed. These factors matter most.
Ask for the cost of the flush and the cost of any repair separately.
In Peoria
Scale, softeners and hard water
Mineral scale is a concern for any heater in the Phoenix area. Ask your provider for the hardness figure and use it to set a service interval.
A water softener can help protect a heat exchanger. If you have one, ask the plumber to check that it is set up correctly, and read softener installation and repair for more.
Common faults
Error codes cover problems such as ignition failure, flame loss, exhaust blockage and sensor faults. A blocked venting path, a dirty inlet filter or low gas supply are all frequent causes.
If the unit shuts off when you open a small faucet, flow may be too low for it to fire. A plumber can check the flow switch and the filter and find out whether a fixture or a valve is the cause.
Repair or replace
Parts for tankless units are specific to the brand, so a plumber who works on your model matters. A unit that is a few years old with one failed sensor is usually worth repairing. An older exchanger that keeps scaling or leaking may be worth replacing.
If you are comparing it with a tank, see water heater installation and replacement for the other side of the choice.
Keeping a tankless unit healthy between visits
Check the unit's display now and then. An error code that appears once may be harmless, while one that returns every day is worth a call. Write the code down with the date, because it helps the technician narrow the cause.
Keep the area around the heater clear, and make sure the vent termination outdoors is free of nests, debris and storage. Blocked airflow shortens the life of the burner and heat exchanger.
If you notice the water turning lukewarm in bursts, or the flow dropping when two fixtures run together, mention both. Those clues point toward scale, a clogged inlet screen or a unit that is undersized for the household.
Manufacturer rules and licensing
Warranty terms and descaling intervals come from the manufacturer's manual, so follow it for your model. Look up the contractor at roc.az.gov, the Arizona Registrar of Contractors site, and ask whether they service your brand.
Hot water pages to compare
Water Heater Installation & Replacement
Fit a fresh tank heater chosen for household size, fuel type and available room.
Water Softener Installation & Repair
Add a softener against scale, or revive a worn unit that no longer regenerates.
Common questions
Tankless service questions
It depends on your water and the manufacturer's guidance. Mineral-rich water often calls for a yearly flush.
For a unit with a single failed part, usually yes. For an old, scaled exchanger, replacement may make more sense.
Phone at any hour. If the unit is leaking, or you smell gas near it, shut it down before you dial. The contractor sets the arrival time.
It depends on the unit, the access and how much scale is inside. Ask the dispatcher for a clear quote before the visit.
Write down the code and model, then phone. Some codes are simple resets and some mean a failed part. The contractor can tell you which.
Not required, but hard water leaves scale. Many owners add a softener or a filter to protect the unit. See water softener installation and repair for options.
Tankless unit giving trouble?
Call and give the brand and any error code. The person who answers will hand you to a contractor who works on tankless units.