Summer Is Here

Jason Advantage - Friday, December 13, 2013

Canberra Plumber

Summer is well and truly here, so lets take advantage of all that sunshine and talk about solar hot water systems

At Laser Plumbing Canberra we always use and recommend Endless Solar Evacuated Tube hot water systems for anyone wanting to make the switch to solar hot water. But why you may ask? What makes the evacuated tube solar hot water system so much better than the options on the market? Lets take a look at the two main types of systems available to help you make an informed decision.

Evacuated tubes or flat panels? Lets compare:

Endless Solar Evacuated Tubes

Flat Plate Panels


More efficient than flat plate panels. Are able to capture sunlight at all angles.

Less efficient than evacuated tubes. Capture

most of the energy when sunlight is perpendicular to the panel.


Generally 10-15 years

Generally 5-7 years

Roof direction

Suitable to be situated on North, East or West facing roofs.

Best to be situated on a North facing roof.

Frost tolerance

Naturally frost tolerant. They can withstand very low temperatures without the need for an anti-freeze fluid (e.g. glycol).

May require anti-freeze fluid (e.g. glycol) when installed in frost prone areas, which

requires ongoing maintenance.

Heat loss

Better at retaining the sun’s energy due to the vacuum (i.e. experiences minimal heat-loss).

Susceptible to higher heat-loss especially during cooler periods of the year.


Will still operate normally with one or more tubes removed. Each tube is affordable and easy to replace.

Can be quite costly to purchase and replace panels. If a panel is damaged, the entire panel may need replacement.

Required roof space

Requires less roof space (generally around 5m2).

Require more roof space (generally around 8m2).


Generally higher initial investment than flat panels.

Generally less upfront cost than evacuated tube systems.

But why should you choose solar?

  • Water heating accounts for approximately ⅓ of a household’s electricity bill so with the cost of power on the rise it makes sense to save money where you can.

  • By installing solar hot water people generally save up to 90% off their water heating costs on an ongoing basis. Obviously this depends on your climate and the type of system you have, but the savings potential is huge

  • Conventional hot water systems emit an incredible amount of greenhouse gases along with the electricity requirements to power them. A solar system conserves our natural resources and reduces household carbon pollution by more than 2,000kg per year.

If you would like to learn more about the Endless Solar Evacuated Tube system, or solar in general, please get in touch with our team today.