Quick Checks Before You Call
- Check your power or gas supply. For electric systems, check the circuit breaker and any dedicated safety switch for the hot water circuit hasn't tripped. For gas systems, confirm the gas is actually on and other gas appliances in the house are working.
- Check the pilot light, if you have one. Older gas storage systems have a visible pilot light — if it's out, some models have a simple relight procedure detailed on the unit's data plate. If you're not confident, don't attempt it — call a licensed technician instead.
- Check the thermostat setting. It sounds obvious, but a knocked or incorrectly set thermostat is a genuinely common cause of lukewarm rather than hot water, particularly after any nearby work or cleaning.
- Check whether it's the whole house or one outlet. If only one tap or shower has no hot water, the fault is more likely local to that fixture than the hot water system itself — a different diagnosis to a whole-house failure.
- Check for visible leaks. Look around the base and fittings of the unit for pooling water or visible dampness, which points toward a tank or fitting failure rather than a heating fault.
Common Causes by System Type
| System Type | Common Causes of No Hot Water |
|---|---|
| Electric storage | Failed element, tripped safety switch, faulty thermostat |
| Gas storage | Pilot outage, faulty thermocouple, gas supply issue |
| Continuous flow | Ignition fault, error code, gas or water supply issue |
| Heat pump | Compressor fault, control board error, tripped breaker |
| Solar | Booster element failure, circulation pump fault, controller issue |
Stop immediately — don't operate any switches or appliances. Get clear of the property and call your gas provider and an emergency service. This is not a DIY troubleshooting situation.
When to Call a Professional
If the quick checks above don't identify an obvious cause — or you're not comfortable checking a pilot light, breaker or gas supply yourself — it's time to call. Trying to diagnose an electrical or gas fault beyond a basic breaker check isn't worth the risk, and in South Australia, gas and most hot water repair work legally needs to be carried out by a licensed technician regardless.
What to Tell Us When You Call
- The system's fuel type (gas or electric) if you know it, and brand if visible on the unit
- Whether it's the whole house or a single outlet affected
- Any error codes displayed, for continuous flow or heat pump systems
- Whether you've noticed any leaking, unusual noise or smell
- Roughly how old the system is, if known
That information helps us arrive prepared with the right parts and diagnostic approach, which often means a faster, single-visit fix.
No Hot Water Right Now?
We prioritise genuine no-hot-water callouts for same-day response across metro Adelaide wherever possible.
Call 08 8330 4970 View Hot Water Repairs