Solar Gas Boosted

Solar systems use the sun’s energy to heat water, so they are much better for the environment and cheaper to run.

Purchase costs

Installation costs

Running costs

CO2 Emissions

Pros

Utilises free energy from the sun

Reduced monthly gas bills

Government incentives can help offset part of the initial investment

Uses a continuous flow unit for a backup booster, which means you will never run out of hot water

Cons

Higher installation cost

Tank takes up more space than continuous flow units (units with roof mounted tanks are also available)

Less efficient in winter

Panels have to be installed on a north facing roof to maximise the efficiency of the sun

Gas storage

Gas Storage hot water units are available in 4 and 5 star. Cylinders can be made from stainless steel or vitreous enamel coated steel.

Purchase costs

Installation costs

Running costs

CO2 Emissions

Pros

Up front purchase costs are usually lower than other types of units

Lower installation costs with no upgrade of gas line required

Delivers hot water faster, as the water is stored ready for immediate use

5 star energy efficient models also available

Cons

Tank size takes up space

Heat loss from the tank, whether the water is being used or not

Not as energy efficient as a solar or continuous flow unit

Continuous flow

Continuous Flow hot water units use industry leading technologies to heat water as required, rather than storing it. This simply means they’ll never run out of hot water.

Purchase costs

Installation costs

Running costs

CO2 Emissions

Pros

Save space with small footprint mounted on your wall

They heat water as you need it, so you will never run out of hot water

Controllers can be installed to accurately deliver required water temperature

Cons

You may need to upgrade your gas line which can add to your upfront costs

Small amount of water (approx 1 to 2 litres) is wasted in initial delivery

No mains pressure

Takes longer to deliver hot water than a storage heater

Heat pump

Heat Pumps are one of the most efficient hot water systems and they are a more environmentally friendly alternative to straight Gas and Electric storage systems.

Purchase costs

Installation costs

Running costs

CO2 Emissions

Pros

Can be connected to extended (16hr) off peak tariffs

Ease of installation as a heat pump uses the similar connections as an electric hot water system and similar footprint

Takes heat from ambient air to heat water

Environmentally friendly

Cons

Can be noisy when operating

Suited to warmer climates

Solar electric boosted

Solar systems use the sun’s energy to heat water, so they are much better for the environment and cheaper to run.

Purchase costs

Installation costs

Running costs

CO2 Emissions

Pros

Utilises free energy from the sun

Reduced monthly electricity bills

Great for climates that receive a lot of sunshine

Government incentives can help offset part of the initial investment

Boosting element

Cons

Higher up front cost for equipment and installation

Less efficient in winter

Panels have to be installed on a north facing roof to maximise the efficiency of the sun

Electric storage

In Electric Storage hot water units, water is heated in an insulated tank by an electric element.

Purchase costs

Installation costs

Running costs

CO2 Emissions

Pros

Same footprint when replacing a like for like unit, saving money on replacement costs

Most affordable unit to purchase

Lower tariffs are often available, which will heat water during off-peak times

Cons

Rates as the highest when it comes to Co2 emissions.

When installed on an off peak tariff, high chance of running out of hot water during heavy load days. Water will not be reheated until over night