• April 9, 2014 - Domestic Renewable Heat Incentive Released - Solar Thermal has got the great government funding through the Domestic RHI which it deserves! Solartwin Solar Thermal panels have just become not only a cost cutting and very green option to heat your water but now you will receive additional... More →
  • November 6, 2013 - Notice to Solartwin customers - Letter's from Stenfield & Co - A number of Solar Twin Ltd customers have been in touch this week to query a letter they have received from legal firm Stenfield & Co. - The content relates to Solar Twin Ltd's liquidation, and claims that customers "undoubtedly paid more than... More →
  • July 12, 2013 - Renewable Heat Incentive Updated - Solar Thermal to have Heavy Support - The Government have today released the Renewable Heat Incentive: The first step to transforming the way we heat our homes. If you are looking to buy a SolarTwin System contact Genfit. "the scheme will be open to anyone in these groups who installed... More →
  • May 27, 2013 - DECC announce they are doubling the RHPP grant for solar thermal from £300 to £600 - Solar Thermal Panels Receive Huge Renewable Heat Premium Payment - Solar Thermal has received a huge boost, it's a great time to buy a Solartwin Product. - Greg Barker tweeted about the scheme - - Big uplift for #RHPP Vouchers to put a shot in the... More →
  • February 14, 2013 - Solartwin DIY reviews - SolarTwin Reviews from Reviewcentre - "Review Centre is a community of real people, just like you, sharing their product and service experiences. - Our community of reviewers are a passionate bunch who want to help you discover what's right for... More →
  • January 17, 2013 - Crackdown on aggresive solar selling - YouGen, a leading consumer body serving the renewable and energy efficiency sectors, is calling for a change in the law after a review by the Office of Fair Trading revealed unscrupulous selling tactics by solar and other energy efficiency... More →

Solar water heating systems = Solar panels + solar energy. Solar thermal: solar power & solar hot water. RHPP and renewable heating premium payment

Solar Energy Panels plumbing summary

‘How to install solar heating panels – almost as easy to plumb in as a washing machine’

Solar plumbing diagrams showing how Solartwin’s freeze tolerant solar panels are so easy to install…

Click here to view and interative simulation of Solartwin

We invite you to the three solar panel plumbing diagrams which follow. The first shows a conventional low pressure hot water system – with no solar panels. The next two diagrams show very different solar installations. The conventional solar water heating installation is complicated! By contrast, the last solar installation diagram simply shows how Solartwin solar panels requires very little extra plumbing, which takes up very little space in the house and is quick and easy to install.

1. Conventional low pressure hot water system with no solar

Basic plumbing for a normal low pressure hot water system - no solar

2. Conventional solar thermal system with pre-heat & antifreeze

Conventional solar system with pre-heat & antifreeze

  • This is one of several “traditional solar panels” plumbing options used in conventional (indirect) solar water heating systems.
  • It consumes a lot of space, takes longer to install and is expensive. It also carries a risk of Legionella growth in the solar cylinder in winter.

3. The Solartwin solar panel system

The Solartwin system

For a working demonstration of the Solartwin solar panels ystem click the image above. Please note: Your browser must have the latest java plug-in to view this demonstration. (The applet may take up to 1 minute to load.)

  • The Solartwin solar panel system is simply a 2.8 square metre (approx) solar water heating collector panel on the roof, plus an “intelligent” solar energy powered water pump and two strong, thin, flexible supply pipes.
  • From the outside, Solartwin looks like most conventional solar water heating panels: a black sheet of metal in a double glazed box. Like all solar water heaters, this absorbs solar energy and heats up.
  • Because the Solartwin solar panel system is freeze-tolerant, it now collects the solar energy heat from using ordinary water, rather than using antifreeze. Also, because it uses a photovoltaic (solar electric) panel to power the pump, the Solartwin solar panels system is zero carbon: totally solar.
  • The solar pump responds intelligently to reduced levels of sunlight by pumping slower. As a result, unlike most solar panel systems, it provides roughly the same water temperature increase all the time, even if is sunny or overcast.
  • It delivers your solar hot water directly into your existing hot water storage cylinder along simple to install, flexible pipes. The solar hot water floats on top of the colder water in the storage cylinder, waiting to leave first, when you want to use it.
  • Installing Solartwin is simple and relatively cheap. As you can see it requires minimal plumbing.
  • Solartwin installation also requires fewer technical skills. Only a single full skill is required in the installer: the skill of working on a roof. The need for plumbing skills is minimised although not completely removed since two simple “tee” connections need to be made to your existing plumbing. The remainder of the plumbing involves simply laying and clipping flexible pipes. No mains electrical skills are needed whatsoever because the system runs on low voltage solar electricity.

Solartwin solar-heating means minimum disruption when installing solar-panels, and then is as equally easy to un-install and load in a van when moving house.

For speed, and for the sake of the environment, Solartwin offer feasibility checks and fixed price solar quotes by phone.
Unique in the world, Solartwin's phone survey now also uses online aerial photographs of your roof in most urban areas!

Unlike most solar surveys, our instant surveys and quotes are completely free and with no obligation.
Click here to request a survey

Or Call us on

0344 567 9032

Domestic Renewable Heat Incentive Released

Solar Thermal has got the great government funding through the Domestic RHI which it deserves! Solartwin Solar Thermal panels have just become not only a cost cutting and very green option to heat your water but now you will receive additional funding too! The Domestic RHI rates – Released April 2014 Ofgem have produced a […]

Read More | Archives

Notice to Solartwin customers – Letter’s from Stenfield & Co

A number of Solar Twin Ltd customers have been in touch this week to query a letter they have received from legal firm Stenfield & Co. The content relates to Solar Twin Ltd’s liquidation, and claims that customers “undoubtedly paid more than you should have and it is highly likely that you will have been […]

Read More | Archives

Renewable Heat Incentive Updated – Solar Thermal to have Heavy Support

The Government have today released the Renewable Heat Incentive: The first step to transforming the way we heat our homes. If you are looking to buy a SolarTwin System contact Genfit. “the scheme will be open to anyone in these groups who installed an eligible technology since 15th July 2009” so if you have a […]

Read More | Archives

DECC announce they are doubling the RHPP grant for solar thermal from £300 to £600

Solar Thermal Panels Receive Huge Renewable Heat Premium Payment Solar Thermal has received a huge boost, it’s a great time to buy a Solartwin Product. Greg Barker tweeted about the scheme – Big uplift for #RHPP Vouchers to put a shot in the arm of the market ahead of full Domestic #RHI tinyurl.com/ktxz3o2 — Greg […]

Read More | Archives

Solartwin DIY reviews

SolarTwin Reviews from Reviewcentre “Review Centre is a community of real people, just like you, sharing their product and service experiences. Our community of reviewers are a passionate bunch who want to help you discover what’s right for you.” (Review Centre) We are well rated on review centre, this shows the excellent product quality of […]

Read More | Archives


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