If your water heater is not working, check three things first: the isolator switch, the breaker and the thermostat dial. Those cause a large share of "no hot water" calls, and you can check them safely in five minutes. If all three are fine, or the breaker trips again, switch the heater off and call a technician.
7 checks before you call a technician
- Isolator switch. Most heaters have a switch near the bathroom door or above the heater. It is easy to switch off by mistake. Turn it on.
- Breaker. Open your distribution board. Look for a breaker in the middle position or marked "water heater". Reset it once.
- Thermostat dial. If the dial is on the heater body, check it has not been turned down.
- Waiting time. After power returns, a full tank needs time to heat. Wait at least an hour before deciding it is broken.
- Other taps. Run hot water in another bathroom. If only one tap is cold, the tap is the problem, not the heater.
- Power in the home. If other sockets in the area are off, the problem is wider than the heater. See our guide on power tripping.
- Leaks. Look at the tank and pipes. Water near electrics means keep the power off.
Tip: Take a photo of the heater label (brand, size and model) while you check. It saves time when you book a repair.
Signs you should switch it off now
Turn off the isolator and the breaker, and call a technician, if you notice:
- The breaker trips a second time
- A burning smell, scorch marks or buzzing
- Water pooling under the tank
- Steam or very hot water from the relief pipe
- Rusty or brown hot water
Is it the heater or the tap?
| What you notice | Likely problem |
|---|---|
| No hot water at any tap | Heater, power or breaker |
| No hot water at one tap only | Tap cartridge or mixer |
| Hot water for a few minutes, then cold | Failing element or scale |
| Water very hot, then cold | Thermostat |
| Hot water is weak but there | Low thermostat setting or scale |
What causes water heaters to stop working?
In Dubai homes, the most common causes are a burnt-out element, a failed thermostat, a tripped thermal cut-out and scale build-up from hard water. Our electric water heater repair guide explains each part and what fixing it involves.
Who should fix it if you rent?
Under Dubai's rent law, the landlord is generally responsible for repairs that affect your use of the home, unless your contract says otherwise. Check your tenancy contract and tell your landlord or property manager first. If they ask you to arrange the repair, ask for the job ticket so you have a record of the work and the price.
How Shawakesh handles a water heater call
- WhatsApp us a photo of the heater and its label.
- You get a named technician and an arrival window.
- The technician finds the fault and gives you a written price before starting.
- You get before and after photos when the job is done.
Book water heater repair on WhatsApp: +971 58 174 3432.
Water heater not working FAQs
Why is there no hot water after a power cut?
The heater may need time to heat again, or a surge may have tripped the breaker or the thermal cut-out. Check the breaker first, then wait an hour.
Why does my water heater keep tripping?
A damaged element, moisture inside the heater or faulty wiring are the usual causes. Do not keep resetting it. Call a technician.
How long should a water heater take to heat up?
It depends on the tank size and element. Expect around one to two hours for a full tank from cold.
Can I fix a water heater myself?
You can check the switch, breaker and thermostat dial safely. Anything behind the cover involves mains power and water, so leave it to a technician.
