Cost/Government Rebates

How Much Do Solar Hot Water Systems Cost?

Benefits

Your usage System size System price (after rebate)
Small user 170L heat pump $1,900
Medium user Either 280L heat pump; OR
Solar hot water with 2 collectors and a 315L tank
$2500

$3,500

Large user Solar hot water with 3 collectors and a 400L tank $3,800

These prices are indicative. Additional costs such as tilt frames, power point installation, concrete slab provision, additional pipework, pipe size upgrades and gas to electric circuitry may apply.

  • Free energy from the sun

  • Reduce water heating costs by 15-40%

  • Reliable/dependable hot water 24/7

  • Government Rebates available

  • Lessen your household’s carbon footprint

  • Increase your property value

  • Environmentally friendly

How Much Do Solar Hot Water Systems Cost?

Small user
System size 170L heat pump
System price
(after rebate)
$1,900
Medium user
System size 280L heat pump
or
Solar hot water with
2 collectors and
a 315L tank
System price
(after rebate)
$3,500
Large user
System size Solar hot water
with 3 collectors and
a 400L tank
System price
(after rebate)
$3,800

These prices are indicative. Additional costs such as tilt frames, power point installation, concrete slab provision, additional pipework, pipe size upgrades and gas to electric circuitry may apply.

Benefits

  • Free energy from the sun

  • Reduce water heating costs by 15-40%

  • Reliable/dependable hot water 24/7

  • Government Rebates available

  • Lessen your household’s carbon footprint

  • Increase your property value

  • Environmentally friendly

Types of Solar Hot Water Systems

What Solar Hot Water System to Buy

The type of solar hot water system you buy depends on whether or not you live in a frost prone area, what your budget is and how long a warranty you want.

For those on a budget, not in a frost prone area and who are happy with the standard warranty, we’d definitely suggest a flat panel system. The brands that we’re comfortable recommending are EnviroSun (previously known as Conergy), Chromagen and Dux.

For people who live in a frost-prone area, we’d only recommend an evacuated tube system. The best brands on the market are Apricus, SolarArk and Rinnai.

Apricus and SolarArk come with the longest warranties.

Like with anything you buy, you get what you pay for.

Flat Panel Solar Collectors

Flat panel solar hot water collectors are ideal for those on a budget and in areas that are not affected by frost.

These systems work on copper pipes running through a glass covered collector, sometimes connected to a water storage tank on the roof, though usually the storage tank is on the ground.

The sun heats the copper pipes and the resulting hot water is fed back to the storage tank.

The sun generally provides sufficient heat to give you plenty of hot water for most of the year, but when there are a number of cold days, your system will need a helping hand (most likely in winter).  This is where your electric or gas booster comes in. This heats the water when there’s not quite enough heat in the sun to do the job.

Flat Panel Solar Collector for Solar Hot Water

Flat Panel Solar Collector

Evacuated Tube Solar Collectors

This type of solar hot water system is higher efficiency and better suited to frost-prone areas, as they don’t crack when the temperature drops below freezing.

Evacuated tube systems can extract the heat out of the air on a humid day and don’t need direct sunlight. The total efficiency is higher and they perform better than flat panel systems when the sun is not directly on the collectors. eg. early in the morning or in the late afternoon. As well as being more efficient, they’re also more durable and cheaper to repair.

Evacuated tube solar hot water systems consists of two glass tubes that are fused at the top and bottom. The space between the two tubes is evacuated to form a vacuum. A copper pipe running through the centre of the tube meets a common manifold that is then connected to a slow flow circulation pump that pumps water to a storage tank below. This heats the water during the day. Because the tank is so well insulated, the water stays hot for a number of days.

The sun generally provides sufficient heat to give you plenty of hot water for most of the year, but when there are a number of cold days, your system will need a helping hand (most likely in winter).  This is where your electric or gas booster comes in. This heats the water when there’s not quite enough heat in the sun to do the job.

Evacuated Tube Solar Collector for Solar Hot Water

Evacuated Tube Solar Collector

Water Temperature, Winter and Cloudy Days

Water Temperature

In NSW, the regulation for water temperature in all bathrooms is 50ºC. Your actual tank temperature setting at the thermostat must be set at a minimum of 60ºC (to prevent bacteria and diseases from growing). A tempering valve is usually installed on hot water systems, which mixes your hot and cold water to deliver hot water at the tap at a constant and regulated temperature.

Winter

Unlike solar power systems which work on light, solar hot water systems work on heat. This means that in the depths of winter, you may need to rely on your electric or gas booster to heat the water to your desired temperature. You’ll find the rest of the year, your solar hot water system will run straight from the sun.

Cloudy Days

Yes – though on cloudy days, your hot water system may need a boost. The booster will come on when the temperature of water in the storage tank falls below the thermostat setting and turn off automatically when the water reaches the required temperature.

Important Considerations

What If I Don’t Use a Lot of Hot Water?

If you don’t use a lot of hot water and you want a more environmentally friendly water heater, you may choose to get a heat pump water heater.

A heat pump water heater uses about 75% less energy to heat your water than a conventional electric hot water system.

A heat pump is an efficient type of storage water heater that extracts heat from the air. They are particularly useful if you have limited roof space for collectors/panels, have poor orientation or shading.

Be mindful that heat pumps make a low humming sound similar to an air conditioner so you won’t want to position your heat pump right next to a bedroom.

Heat pump water heater

Who Should I Choose To Install My System?

Just as important as the quality of the components you choose is the quality of the installation, as many corners can be cut by unscrupulous installers.

We recommend having your solar hot water or heat pump system installed by a company that’s been installing systems for at least 5 years and consistently receives good (independent) reviews on solar hot water comparison websites.

Solar Hot Water Quotes

The Energy Experts takes the hard work out of installing solar hot water. Our consultative approach means we understand your current and future needs and properly size and professionally install high-output systems that are guaranteed to outperform and outlast conventional equipment.

We have reputable and experienced solar hot water installation teams in the Illawarra, as well as in Sydney.

Caro and Wes - The Energy Experts Australia

Get Your Free Quote Today – Solar Made Easy!

Request A Quote
1300-516-474