Why Geyser Maintenance Matters
Your geyser is typically the biggest energy consumer in your home and one of the most expensive appliances to replace. In South Africa, where load shedding and power fluctuations are common, proper geyser maintenance is even more critical.
Here’s how to keep your geyser running efficiently and extend its lifespan.
Understanding Your Geyser
Most South African homes have either:
- 100L or 150L electric geysers (most common)
- Solar geysers (increasingly popular)
- Gas geysers (less common but efficient)
The average lifespan of a well-maintained geyser is 10-12 years. Without proper maintenance, that can drop to 5-7 years.
1. Check the Anode Rod Annually
The sacrificial anode rod prevents your geyser tank from corroding. This is the most important maintenance task and often the most neglected.
What to do:
- Have a professional check the anode rod annually
- Replace it when it’s more than 50% worn
- In hard water areas (common on the South Coast), check every 6 months
2. Manage Temperature Settings
Most geysers are factory-set to 70°C, which:
- Wastes electricity
- Increases wear on the element
- Creates scalding risks
Our recommendation: Set your geyser to 60°C. This:
- Reduces energy consumption by up to 10%
- Still kills harmful bacteria
- Extends element lifespan
3. Flush Sediment Annually
Over time, sediment (especially in hard water areas) accumulates at the bottom of your geyser tank. This:
- Reduces heating efficiency
- Shortens element lifespan
- Creates strange noises
Warning: This should be done by a licensed plumber. DIY flushing can damage the thermostat or create safety hazards.
4. Load Shedding Protection
Frequent power cuts can damage your geyser. Here’s how to protect it:
Install a Geyser Blanket
A geyser blanket:
- Keeps water hot longer during outages
- Reduces reheating time when power returns
- Can save up to 20% on electricity
Consider a Geyser Timer
Automatically switches off your geyser during peak electricity times and during typical load shedding hours.
Install a Surge Protector
Protects against power surges when electricity is restored—these surges can blow elements and damage thermostats.
5. Check the Pressure Relief Valve
The pressure relief valve (PRV) is a critical safety component. It should:
- Release a small amount of water when the geyser heats up (normal)
- Not drip continuously when cold (indicates a problem)
Test monthly: Lift the valve lever briefly. Water should flow out and stop when you release it. If it doesn’t, call a plumber immediately.
6. Insulation Check
Ensure both the hot water pipes and the cold water inlet pipe (first 1.5m) are properly insulated. This:
- Prevents heat loss
- Reduces energy bills
- Protects against freezing (rare but possible in parts of KZN)
Warning Signs That Need Immediate Attention
Call a plumber if you notice:
- Water leaking from the geyser tray
- Unusual banging or popping sounds
- Water not getting hot enough
- Circuit breaker tripping frequently
- Rusty water from hot taps only
Derwent Plumbing’s Geyser Services
We offer comprehensive geyser services across the KZN South Coast:
- Geyser installations (all major brands)
- Geyser repairs and replacements
- Annual maintenance inspections
- Geyser blanket and timer installations
- Emergency geyser services (burst geysers can’t wait)
Contact us:
- Steve: 082 893 1742
- Goan: 076 198 3858
Pro tip: Schedule your annual geyser service in spring before winter demand increases. This ensures your geyser is ready for the season when you need hot water the most.