Water Heating

How Long Should a Water Heater Actually Last?

Tank, tankless and hard water all change the answer. What to expect and the signs yours is near the end.

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5 min read

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September 9, 2025

How Long Should a Water Heater Actually Last? article cover image
A dripping faucet or a running toilet is usually a fair DIY project. A parts store and twenty minutes will often solve it. But plumbing problems escalate quickly once water finds a path it should not be taking, and the line between "fixable this weekend" and "call someone now" is not always obvious.

A dripping faucet or a running toilet is usually a fair DIY project. A parts store and twenty minutes will often solve it. But plumbing problems escalate quickly once water finds a path it should not be taking, and the line between "fixable this weekend" and "call someone now" is not always obvious.

A dripping faucet or a running toilet is usually a fair DIY project. A parts store and twenty minutes will often solve it. But plumbing problems escalate quickly once water finds a path it should not be taking, and the line between "fixable this weekend" and "call someone now" is not always obvious.

1. Water pressure drops suddenly

If you notice a gradual decrease in pressure over several months, it typically indicates mineral buildup. However, a sudden drop in pressure throughout your entire home suggests a more serious problem, such as a hidden leak, a malfunctioning pressure regulator, or a blockage in the main line. Simply tightening a fitting won't resolve these issues.

2. You smell sewage indoors

A blocked vent stack or a dried-out trap is usually the culprit behind unpleasant odors. This situation is not just bothersome; exposure to sewer gas poses health risks. Addressing the issue often requires a thorough diagnosis of the vent system rather than just focusing on the fixture closest to the smell.

Plumbing work illustrating How Long Should a Water Heater Actually Last?

3. Water heater is making noise

Popping or rumbling sounds usually mean sediment has built up at the bottom of the tank. Left alone, this reduces efficiency and can shorten the unit's life significantly. A flush is a simple fix — but repeated noise after a flush suggests the tank itself is failing.

If you hear popping or rumbling sounds, it usually means there’s sediment building up at the bottom of the tank. If you ignore it, it can hurt efficiency and even shorten the unit's lifespan. Flushing it out is an easy fix, but if the noise comes back after that, it might mean the tank is on its way out.

4. Multiple drains are slow at once

One slow drain is a local clog. Several slow drains at the same time usually means the problem is further down the line, in a section shared by multiple fixtures. Chemical drain cleaner will not reach it, and repeated dosing can damage older pipe.

"Before you decide to cut into a wall or a slab for repairs, it's wise to seek a second opinion. You might discover alternative solutions that could save you time and money."

5. You have already tried twice

If the same repair needs doing again within a few months, the underlying cause was never addressed. That is the clearest sign it is time for a proper diagnosis rather than a third attempt at the same patch.

If you find yourself needing the same repair again in just a few months, it’s a clear sign that the real issue wasn’t tackled. That’s when you know it’s time to get a proper diagnosis instead of just trying to patch it up again.

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Pipewise Team

Field notes from licensed technicians

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FAQ

Questions, answered

Everything you need to know before booking your plumbing service.

Do you offer emergency plumbing services?

Yes — we run a 24/7 emergency rota, so there is always an engineer on call. Burst pipe at two in the morning or no hot water in a rental, ring the emergency line and a person will answer.

How quickly can a plumber arrive?

For emergencies we aim to have a technician with you within 60 to 90 minutes. Standard bookings are usually scheduled for the same day or the next working day, depending on your preferred time slot.

Do you provide upfront estimates?

Yes. We assess the job first and give you a fixed price before any work begins, so there are no surprises once the invoice arrives.

Do you work with residential and commercial properties?

We do. Our team handles everything from single-bathroom repairs in family homes to drainage and pipework upgrades across offices, restaurants and retail units.

Can I schedule a service online?

You can. Fill in the request form on this page with your preferred date and time and we will confirm the appointment by phone or email.

Which areas do you cover?

We cover the whole metro area and the towns within about thirty miles of it. Just outside that ring? Call anyway — we can often fit you in around a nearby job.

Plumber drilling a pipe fitting

Get in Touch

Have a question, need a repair, or dealing with an urgent plumbing issue? Reach out to our team and we’ll help you find the right solution.

Plumber drilling a pipe fitting

Get in Touch

Have a question, need a repair, or dealing with an urgent plumbing issue? Reach out to our team and we’ll help you find the right solution.

Plumber drilling a pipe fitting

Get in Touch

Have a question, need a repair, or dealing with an urgent plumbing issue? Reach out to our team and we’ll help you find the right solution.

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