Common Hot Water Problems in SA Homes and How to Fix Them

Feb 19, 2025By Daryl Akers
Daryl Akers

Insufficient Hot Water Supply

One of the most common issues homeowners in South Africa face is insufficient hot water. This problem often arises due to an undersized water heater or increased household demand. To resolve this, consider upgrading to a larger water heater or installing a tankless system for an on-demand hot water supply.

water heater upgrade

Checking the Thermostat

Sometimes, the issue may be as simple as an incorrectly set thermostat. Ensure that your water heater's thermostat is set between 50°C and 60°C. If adjusting the thermostat does not resolve the issue, it might be faulty and require replacement.

Leaking Water Heater

A leaking water heater can cause significant damage if not addressed promptly. Leaks often originate from a faulty valve or excessive pressure buildup. First, check all connections and valves for signs of wear and tear. If the leak persists, it may be necessary to call a professional plumber to assess and fix the damage.

plumber fixing leak

Pressure Relief Valve Issues

The pressure relief valve is a crucial component that prevents excess pressure from building up inside the tank. If the valve is malfunctioning, it can lead to leaks or even tank bursts. Regular maintenance and inspections can prevent such problems from escalating.

Strange Noises from the Water Heater

Hearing strange noises like popping or rumbling from your water heater is not only annoying but also indicative of potential issues. These sounds are often caused by sediment buildup at the bottom of the tank. Regularly flushing your water heater can help eliminate these sediments and extend the life of your appliance.

sediment buildup

Flushing Your Water Heater

To flush your water heater, turn off the power supply and attach a hose to the drain valve. Allow the tank to empty completely before refilling it. This simple maintenance task can significantly improve your water heater's efficiency and longevity.

Inconsistent Water Temperature

Fluctuating water temperatures can be frustrating and are typically caused by a failing heating element or thermostat issues. Testing and replacing faulty components can restore consistent water temperature. In some cases, sediment build-up might also affect performance, necessitating a thorough cleaning.

thermostat adjustment

Professional Inspection

If you are unable to diagnose or fix the problem yourself, it may be time to contact a professional. Regular inspections by certified technicians can prevent minor issues from becoming major headaches, ensuring your hot water system operates smoothly year-round.