Why Your Hot Water Has Gone Cold – And How to Fix It
- Sarah Martin
- Aug 15
- 2 min read
Ever stepped into the shower expecting warmth… only to be met with an icy wake-up call? Before you blame the kids for using all the hot water, here’s what might really be going on — and how Martin Plumbing can help.
1. Your Hot Water Cylinder Is Feeling Its Age
Most hot water cylinders last between 8–12 years. Over time, rust, sediment build-up, and worn parts can mean less heat, lower efficiency, and shorter showers. If yours is approaching its golden years, it may be time for a check-up or replacement.
2. The Heating Element or Burner Has Stopped Working
Electric systems: A failed heating element can mean no hot water at all.
Gas systems: A faulty burner or gas flow issue can cause the same problem.
Both issues are fixable — but the sooner they’re diagnosed, the less likely you are to face a full system failure.
3. Thermostat Trouble
A broken thermostat can leave you with lukewarm water, even if your system thinks it’s doing its job. This is one of the most common (and easiest) fixes we handle.
4. Leaks in the System
If there’s a leak in a pipe or the cylinder itself, your hot water may never reach the tap. Even small leaks waste water and can cause long-term damage to your property.
5. Your System Is Too Small
If your household has grown — more family members, extra bathrooms, or higher water usage — your current hot water system might simply be undersized.
Pro Tip from Martin Plumbing
💡 Strange noises, rusty water, or sudden temperature changes? Don’t wait. Small fixes now prevent big, expensive breakdowns later.
How Martin Plumbing Can Help
We provide a full range of hot water services across Auckland, including:
✔ Testing and replacing faulty elements or thermostats
✔ Flushing out sediment to improve efficiency
✔ Repairing leaks and fixing pressure problems
✔ Recommending and installing the right-sized system for your needs
Discover how to keep the hot water flowing smoothly and pick the perfect cylinder for your home:
Learn how household size, energy source, and flow needs influence which cylinder fits best—a small tank or a solar-ready option tailored to your situation.
Explore cylinder types—from compact direct-electric units to solar-compatible and high-pressure mains systems—and find out which suits your space and wallet.
Get practical tips on saving space, staying efficient, and balancing upfront cost with long-term value.
Book Your Hot Water Check Today
Don’t let another chilly morning ruin your day. Contact Martin Plumbing now to get your system checked before it fails — and enjoy the comfort of a warm, reliable shower every day.
📞 Call us on 09 570 2052 or email us info@martinplumbing.co.nz.
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