What To Do About A Leaking Hot Water System
Few home maintenance issues are as inconvenient, worrying, and potentially expensive and even dangerous as a hot water system leaking. You’re no doubt concerned about how serious the issue might be and whether it’s going to leave you with a hefty repair bill or a cold shower – or both!
The good news? While a leaking hot water system can sometimes indicate a serious problem, in many cases it might just be a normal part of operation or an issue that’s easy to resolve. Let’s dive into the details to help you understand what’s going on and what steps to take next. And if all else fails, don’t worry—our skilled and affordable Melbourne plumbers, Canberra plumbing experts, and Geelong plumbing specialists at Fix-It Right Plumbing are just a call away.
Identifying the leak: Is it normal or serious?
Before you panic, it’s essential to identify where the leak is coming from and what might be causing it. Different types of hot water systems have unique features, and leaks can occur for various reasons. Let’s break it down:
1. Electric hot water systems
Electric hot water leaking? These systems are the original and still the most common in Australian homes, but leaks can occasionally occur.
NORMAL LEAKS: A small amount of water dripping from the temperature and pressure relief (TPR) valve is often normal. This valve releases water to prevent excess pressure buildup. If you have a hot water system leaking from release valve only occasionally, it’s likely functioning as it should.
POTENTIAL PROBLEMS: Continuous or excessive leaking from the TPR valve might indicate that the valve is faulty or there’s too much pressure in the tank. Additionally, leaks around the tank itself could suggest corrosion or a crack, which may require a replacement.
2. Gas hot water systems
Gas systems offer quick heating but are not immune to leaks.
NORMAL LEAKS: As with electric systems, small drips from the TPR valve can be normal.
POTENTIAL PROBLEMS: If you notice water pooling around the base of the tank or dripping from connections, it could be due to a faulty pipe, rust, or even a failing tank. Gas leaks are also a potential risk, so always stay alert for the smell of gas and act quickly if you notice it.
3. Instant hot water systems (Tankless)
Tankless systems are modern, good-looking, compact and efficient – but leaks are still possible.
NORMAL LEAKS: Minor condensation or moisture buildup might not be an issue.
POTENTIAL PROBLEMS: Leaks around the water connections, internal components, or heat exchanger could indicate wear and tear or improper installation. These leaks often require professional repair.
4. Solar hot water systems
If your solar hot water system is leaking, the cause can vary based on its design.
NORMAL LEAKS: Occasional water discharge from the solar collector might occur as part of the system’s operation.
POTENTIAL PROBLEMS: Persistent or significant solar hot water leaking from panels or storage tanks could signal:
- A cracked panel
- Faulty seals
- Or corrosion.
Address these issues promptly to maintain efficiency and avoid costly repairs.
5. Heat pump hot water systems
Heat pumps are known for superb energy efficiency, but they can experience leaks too.
NORMAL LEAKS: Condensation is common and usually harmless.
POTENTIAL PROBLEMS: Water leaking from connections, the tank, or the pump itself could indicate a mechanical issue or worn components. These should be assessed by a professional.
Common causes of hot water system leaks
Here are some typical reasons why your hot water system might be leaking:
- Temperature & pressure relief (TPR) valve issues: This valve is designed to release excess pressure. If your hot water system is leaking from the release valve, it might be due to a faulty valve or high pressure within the tank.
- Loose or worn fittings: Over time, connections and fittings can loosen or wear out, causing leaks. These are often quick and inexpensive to fix.
- Corrosion & rust: Corrosion inside the tank or on external components can lead to leaks. Rust often signals that the tank is nearing the end of its life.
- Cracks in the tank or panels: Physical damage to the tank or solar panels can cause leaks. Cracks are usually irreparable, requiring replacement of the affected component.
- Excessive pressure: High water pressure in the system can cause leaks. Installing a pressure-limiting valve might help if this is a recurring issue.
What you can do to fix a leaking hot water system
Before your hot water headache gets any worse, here are some steps you can take to address the issue right away:
1. Turn off the water supply
Locate the isolation valve near your system and shut off the water to prevent further leaking.
2. Turn off the power or gas
For electric systems, switch off the power at the circuit breaker. For gas systems, turn off the gas supply.
3. Inspect the system
Check for visible signs of damage, such as:
- Rust
- Cracks
- Loose connections.
4. Try a DIY fix
If you’re confident, tighten any loose fittings or replace a faulty TPR valve – but be certain you’re not affecting your warranty or insurance. For condensation or minor leaks, ensure the area is well-ventilated.
5. Call a professional
If the issue persists or seems serious, it’s time to call in the experts. Attempting complex repairs without proper knowledge can lead to further damage.
Don’t wait to address a leaking hot water system
A leaking hot water system – whether it’s an electric, gas, instant, solar, or heat pump model – should never ever be ignored. While some issues are easy to fix, others may require professional attention to prevent further damage or danger.
If you’re unsure how to fix leaking hot water system models or need some additional advice, the team at Fix-It Right Plumbing is always right around the corner to help. Whether it’s a quick Melbourne hot water repair, a Canberra hot water maintenance, or a full Geelong hot water replacement, we’ll ensure your hot water is flowing again in no time. Get in touch today to book your service and enjoy peace of mind knowing your hot baths and showers are in good hands.
