Why You Have No Hot Water
When the hot water stops, the cause is usually one part, not the whole heater. On electric units it's often a tripped breaker, a high-limit switch or a burned-out element. On gas units it's often the pilot, thermocouple or gas supply. Tankless units usually show an error code. Check the safe basics first, then call us to test the rest.
"No hot water at all," "it runs out fast" and "it's only lukewarm" point to different parts, so this page is split that way.
If the heater is also leaking, start with a water heater leaking with no hot water. For leaks, noises, valves and everything else, see our full repair service page.
Safety: If you smell gas (a rotten-egg smell) near the heater, don't relight the pilot, flip switches or use your phone inside. Leave the house and call 911 and Southwest Gas, or your propane supplier, from outside.
No Hot Water Repair Apache Junction, AZ: Three Questions to Answer First
Answer these before you open any panel.
- Is it gas, electric or tankless? Gas tanks have a vent pipe on top; electric tanks have a cable on top and side panels; tankless units hang on the wall.
- Is it no hot water, or not enough? Cold at every tap points to the heat source. Hot for a few minutes, then cold, points to an element, dip tube or sediment.
- Is it one faucet or the whole house? One cold shower with hot water everywhere else is usually the shower valve or a mixing valve, not the heater.
Electric Water Heater: No Hot Water
Did the breaker trip?
Find the double breaker marked "water heater" or "WH." If it's off or in the middle, switch it fully off, then on. If it trips again right away, leave it off: something is shorted, often an element.
What is the red reset button on my water heater?
That's the high-limit switch, sometimes called the ECO. It sits behind the upper access panel and cuts power if the water gets too hot. Turn the breaker off first, then remove the panel and the insulation and press the button firmly. Put the insulation and panel back, then switch the breaker on. If it trips again, call us.
Safety: The button sits next to live wiring. If it trips again within a day or two, stop resetting it: a stuck thermostat or grounded element is overheating the water and needs testing.
Upper element or lower element?
Most electric tanks have two elements, each with its own thermostat, and the upper one heats first. If the upper element or thermostat fails, you get no hot water at all. If the lower element fails, you get a little hot water that runs out fast. In Apache Junction's hard water, scale builds up on the lower element and burns it out sooner. We test both and replace only what failed.
Gas Water Heater: No Hot Water
With gas, the question is whether the burner lights. Most tanks have a small window near the bottom to see the pilot.
Why did my pilot light go out?
A draft, a gas interruption or a dirty pilot can put it out once. If it relights by the label steps (only if they're clear to you and there's no gas smell) and stays lit, you may be done. If it goes out again, the thermocouple (or thermopile on some models) is the usual suspect. When it wears out, the gas valve shuts the gas off.
Is the gas getting to the heater?
Check that the gas shutoff on the heater's supply pipe is open (handle in line with the pipe). If your stove has no gas either, call Southwest Gas or your propane supplier.
Just back for the season and the water is cold?
Check how the heater was closed up. A gas control left on "Pilot" or "Off" (or on the low "Vacation" setting), or a breaker switched off for the summer, is a common reason. Make sure the tank is full first: open the cold valve and run a hot tap until water flows steadily, then turn the heat back on. Our snowbird start-up service can handle it for you.
What if the pilot won't light at all?
Most gas tanks made in the last 20 years or so have a flame arrestor at the bottom (the FVIR design). It can clog with dust, lint or pet hair, which starves the burner of air and may lock it out. Some models also have a thermal switch that must be reset or replaced. A clogged arrestor or a failed gas control valve is a job for us, not a DIY fix.
Tankless Water Heater: No Hot Water
Most tankless units show an error code on the front panel or remote.
- Write down the error code. It points to ignition, flow, venting or overheating.
- Check the flow. A tankless heater needs a minimum flow to turn on. A faucet barely open, or a clogged inlet screen, may not trigger it.
- Think about scale. In water at 13–16 grains per gallon, scale in the heat exchanger causes overheating codes, cold bursts and shutdowns. Descaling often brings the unit back.
- Check gas and power. Gas tankless units still need electricity for the fan and controls, so a tripped outlet or breaker stops them too.
For codes that don't clear, see our tankless water heater repair service. We clean inlet screens, descale, and test igniters, flame sensors and flow sensors.
Not Enough Hot Water, or Only Lukewarm
| What happens | Likely cause | Who fixes it |
|---|---|---|
| Hot for a few minutes, then cold (electric) | Failed lower element or thermostat | Us |
| Hot runs out sooner every month | Sediment filling the tank bottom | A water heater flush, or replace if old |
| Lukewarm right from the start | Broken dip tube mixing cold into the hot | Us |
| Water is warm but the dial is low | Thermostat set too low or out of calibration | You can check the dial; we test the rest |
| One shower lukewarm, other taps fine | Worn shower cartridge or mixing valve | Plumbing repair |
| Hot water only lukewarm since a new install | Mixing valve set low, or a crossed connection | Us |
What does a broken dip tube do?
The dip tube is a plastic pipe that sends incoming cold water to the bottom of the tank. If it breaks, cold water mixes in at the top, where the hot water leaves, so you get lukewarm water however hot the tank is.
No hot water in a mobile home or park model?
The basics are the same, but the heater is often in an outside closet, so check that its breaker or a nearby disconnect switch is on and that wind hasn't put out a gas pilot. Small tanks also run out fast, so "not enough" can simply be the size. Gas replacements must be models listed for manufactured-home use. See our park model water heater page for small units.
"It's Only Lukewarm" in Summer
In July (average high about 105°F), the incoming "cold" water can run warm, which changes how a shower feels.
- Your "cold" tap runs warm, so the shower mix feels off.
- Some people turn the heater down for summer and forget to turn it back up in fall.
If the hot tap alone is lukewarm, that's a real heater problem. The DOE suggests about 120°F for most homes.
What You Can Check vs. When to Call
Safe for most homeowners
- Reset a breaker once
- Check the dial or gas control setting
- Relight a pilot by the label, if there's no gas smell
- Press the high-limit reset with the power off
- Write down a tankless error code
Time to call us
- Breaker or reset trips again
- Pilot won't stay lit, or the burner won't light
- Any gas smell
- Error codes that come back
- Water coming from the tank
If you need to turn the heater off while you wait, our guide on how to shut off a water heater shows each step for gas, electric and tankless units. If it's late at night and you also have water on the floor, our emergency water heater repair page covers what to do first.
What does no hot water repair usually cost?
Across repairs of all kinds, Angi's Apache Junction average is about $646 (most $422–$1,196). Thermocouple jobs usually fall in the lower part of that range, element and thermostat jobs in the lower to middle part, and gas control valves or tankless parts toward the upper part. Our repair cost guide breaks it down by problem, and on an older tank our repair or replace guide helps you decide whether the part is worth it.
No Hot Water Repair in Apache Junction, AZ and Nearby
Apache Junction Water Heater Pros works out of 279 N Ironwood Dr #106 and is open 24 hours, 7 days a week (more on who we are). We handle no hot water repair in Apache Junction, AZ for site-built homes, mobile homes and park models, and RV resorts in 85119 and 85120, plus Gold Canyon and East Mesa.
Call +1 480-863-0807 and tell us gas, electric or tankless, what you've already tried, and anything that happened before it quit, like a storm or a power outage. If water is leaking too, our water heater leak repair in Apache Junction service covers both in one visit.
No Hot Water Repair Apache Junction, AZ: FAQs
Why is there no hot water but the heater seems to be running?
On an electric tank, you might hear nothing at all, so "running" is hard to judge. On gas, a pilot can be lit while the burner never fires, which points to the gas control or thermostat. On either type, a broken dip tube can make a working heater feel cold. Testing settles it quickly.
How long does it take to get hot water back after a repair?
It depends on size and settings. A typical 40- or 50-gallon gas tank often reheats in about an hour. Electric tanks take roughly twice as long or more, since their elements heat more slowly. Tankless units make hot water as soon as they're working again. Use hot water lightly until the tank has fully recovered.
Why does my water heater keep tripping the reset button?
Repeated trips mean the water is overheating or the switch itself has failed. Common causes are a thermostat stuck on, an element shorted to the tank, or loose wiring. Pressing the button again only buys time. It needs testing with the power off.
Can a power outage leave me without hot water?
Yes, especially in monsoon season (June 15 to September 30). Outages can trip a breaker or the high-limit reset, and surges can damage a thermostat, element or a tankless unit's controls. Gas tanks with electronic ignition can lock out too. Check the breaker and the reset first, then call if that doesn't do it, and mention the storm.
Why does my hot water run out faster in winter?
In winter the water coming into the house is much colder than in summer, so the heater has to add more heat to every gallon. A tank delivers fewer gallons of hot water before it runs cool, and a tankless unit may need to slow the flow. If it's much worse than last winter, sediment or a failing lower element may be part of it.