Category: Hot Water Advice

There is no single hot water system that suits every property. Gas, electric and heat pump systems each have different installation requirements, running characteristics and space needs. The best choice depends on the property, household and available services.

For more detail on the service itself, see our hot water systems page.

Gas hot water

Gas systems can provide strong recovery and may suit homes with an existing gas supply. Installation requirements depend on the type of unit and where it can be located.

Electric hot water

Electric storage systems are familiar and relatively straightforward in many homes. Tank size, electrical supply and installation space all need to be considered.

Heat pump hot water

Heat pumps use electricity to move heat from the surrounding air into the water. They can be efficient, but installation location, airflow, noise and climate should be considered.

Compare the household demand

The number of occupants, shower habits and simultaneous hot water use are more useful than simply replacing an old system with the same size.

Look at the property, not just the unit

Available gas, electrical capacity, space, drainage and access can affect which systems are practical to install.

Think about replacement timing

If an existing system is failing, choosing the replacement before it stops completely gives more time to compare options rather than making an emergency decision.

Get advice based on the installation

A plumber can assess the existing services and help narrow the options that actually suit the property.

Related plumbing services

You may also find these related service pages useful: hot water systems, gas hot water systems, heat pump hot water systems.

Need help with this type of plumbing?

If you are planning this work or dealing with a problem now, see our hot water systems service page for the relevant plumbing options and next steps.

Hot water systems often show warning signs before they fail completely. Some problems can be repaired, while others indicate that replacement is becoming the more practical option. The first step is identifying what has changed.

For more detail on the service itself, see our hot water repairs page.

1. You are running out of hot water sooner

Reduced capacity can point to heating, thermostat, valve or internal system problems depending on the type of unit.

2. The temperature keeps changing

Water that swings between hot and cool should be investigated, especially if the behaviour is new.

3. You can see water around the unit

Leaks can come from valves, fittings or the tank itself. Water around a hot water system should not be ignored because the source affects whether repair is possible.

4. The system is noisy

Popping, rumbling or other unusual sounds can indicate internal issues or sediment in some systems.

5. The unit needs repeated repairs

When separate faults keep appearing, it may be worth comparing further repair costs with replacement rather than fixing one component at a time.

6. Hot water pressure has changed

Pressure problems can involve valves, pipework or the hot water system. A plumber can test the system and isolate the cause.

7. The system is clearly deteriorating

Visible corrosion, recurring leaks or significant age-related wear can indicate that the unit is approaching the end of its practical service life.

Repair or replace?

The answer depends on the fault, condition of the unit, availability of parts and whether the existing system still suits the household. A proper assessment is more useful than guessing from age alone.

Related plumbing services

You may also find these related service pages useful: hot water repairs, hot water replacement, hot water systems.

Need help with this type of plumbing?

If you are planning this work or dealing with a problem now, see our hot water repairs service page for the relevant plumbing options and next steps.