How and what?

On this page you will find all information about the operation of the Triple Solar® system.

To get started, read the Introduction page to get in and learn about all the benefits.

How does it work?

Watch the animation and get a first impression of how it works.

What is a Triple Solar®-system?

The Triple Solar® system consists of Triple Solar® PVT heat pump panels in combination with a PVT heat pump.

The panels act as a source for the heat pump. The panels extract energy from the outside air, sun and daylight.

How does energy extraction work?

The panel has a heat exchanger at the rear that consists of aluminum fins with a copper pipe. A coolant: glycol (a type of antifreeze) flows through the copper pipe of the exchanger. It absorbs the surrounding heat and conducts it to the heat pump in the home. The heat pump converts heat into usable heat for heating and hot tap water.

Because the heat pump panel is also equipped with a solar panel, it is possible to supply a building not only with heat and hot tap water, but also with electricity.

How is the PVT heat pump panel constructed?

The front of the PVT heat pump panel (also called PVT panel) consists of solar cells (PV) that convert sunlight into electricity. The back is a heat exchanger (T) that provides the source energy for the special PVT heat pump. The PVT panel extracts energy from the outside air, sun and daylight.

The whole has the appearance of a normal solar panel, without edge or clamps.

Triple Solar PVT warmtepomp paneel

In winter there is not enough sunlight to heat, is it?

Triple Solar® heat pump panels do recover heat from sunlight, but especially from the outside air. The panel extracts heat from the outside air down to – 7 ° C. If the temperature drops lower, the heat pump also has an electrical back-up. On an annual basis, this happens on average only 43 hours during the night (Dutch climate). New-build homes are so well insulated that the indoor temperature barely drops in such a case. Even if the heat pump is switched off for a while.

The heat pump

Why a heat pump?

In addition to offering a fossil free energy solution, a heat pump has several advantages:

High efficiency:

A heat pump has an efficiency of approximately 400 to 500%. This means that 4 to 5 kWh of heat is produced from every kWh of electricity.

In other words: the heatthe heat pump extracts from the environment via the PVT heat pump panels is converted into usable heat for a home using a limited amount of electricity.


Low CO2 emissions:

The CO2 emissions by heating with a heat pump are significantly lower – about 60% – compared to heating by natural gas.

More living comfort and ease of use:

With a heat pump, it is no longer necessary to lower the thermostat when you go to sleep or when you go out. A heat pump keeps a home constantly at the right temperature, actually like the automatic climate control in cars. The device is also easy to use.

Silent and reliable:

A PVT heat pump, also known as a brine / water heat pump, is quiet and maintenance-free and always works – even when it freezes.

What kind of heat pump belongs to the heat pump panels and is Triple Solar® also a producer of this?

Triple Solar® is manufacturer of heat pump panels that can work together with a number of heat pump brands. Triple Solar® often works together with NIBE or alpha innotec heat pumps. It is up to you which brand of heat pump you ultimately choose. Triple Solar® or your installer will help you with an advise.

The operation of the heat pump

The heat pump in question is an electric compression heat pump (brine / water). The principle of operation of this type of heat pump is easiest to explain by its parts – the evaporator (verdamper), compressor and condenser, linked to three phases:

Phase 1: Extracting the heat

There is an evaporator (verdamper) in the heat pump. This evaporator contains a so-called transport liquid, which already evaporates at a low temperature. The ambient heat from the source (the heat pump panels) causes the liquid in the evaporator to heat up, and as a result evaporate.

Phase 2: Compression

The electric compressor in the heat pump then compresses the released vapor. This process causes the pressure in the heat pump to rise and the temperature to rise.

Phase 3: Releasing the heat

Thanks to the expansion valve (expansieventiel), the vapor is given space again in the condenser. As a result, the pressure decreases and the vapor turns back into (transport) liquid. Heat is released during this process. This heat is then sent to the heating system of the building. The temperature of the heat released is considerably higher than the temperature of the originally absorbed heat and can now be used for heating and hot tap water. The transport liquid then flows back to the evaporator, after which the process starts again.

Triple Solar uitleg warmtepomp

The frequently asked questions

What is the influence of the sun and how important is the orientation to the south?

Although the Triple Solar® system is not dependent on the sun for heat because the heat pump panel is also able to extract heat from the outside temperature and daylight, it does of course benefit from sunlight. The sun creates a higher source temperature, therefor the heat pump needs less electricity to ultimately deliver usable heat. During the day and in the summer, the heat pump therefor works more efficiently than at night and in the winter.

As far as electricity is concerned, it goes without saying that more sun is more electricity.

What requirements should my home meet and what preparations should I make for installation?

Installing the Triple Solar® system is easy and quick to realize. However, your home must meet a number of requirements and, depending on your home, some preparation is required.


The best return is achieved if the house complies with current insulation standards. This naturally applies automatically to new builds; for existing buildings, the house must have at least a proper energy label. A house with this label may not yet be called “green”, but the most important energy-saving measures have been taken: cavity wall insulation, roof insulation, floor insulation and double glazing.

The system needs some space. A heat pump is larger than a gas boiler and requires approximately 1 square meter at a height of 2 meters. Furthermore, the floor must be strong enough to withstand the weight of the heat pump, approximately 500 kg (including the 180 liter water).


The roof construction must be strong enough to support the PVT heat pump panels.

For a pitched roof, take 20 kg / m2 into account

For a flat roof take into account 25 kg / m2 (because of the ballast)

Fuse box:

The fuse box must be adapted to 3x25A. Request from the  energy provider.

Delivery system:

Underfloor heating works best. If there is no underfloor heating, the existing radiators are replaced by special low-temperature convectors, with a supply temperature of 35 to a maximum of 45 degrees.

The installation

Watch the video: how to make a house fossil free with PVT panels

Watching is more fun than reading!

In the video below you will be taken step by step through the process of replacing the old gas boiler with a heat pump with PVT panels.

De montage van de PVT-panelen

The Triple Solar® PVT heat pump panels are, just like regular PV solar panels, as standard placed over the roof tiles with the help of a mounting system.

We make the necessary pipes in stainless steel, so that they never have to be replaced. A proper roof gland is of course essential.

Watch the video below for the explanation:


The next step

I want to continue with the Triple Solar® system. What now?

The Triple Solar® system needs to be installed by a specialized installer with experience in heat pump installations. We help you select a suitable company. This can of course be your own trusted installer or one of our partners.


To help the installer get started, it is useful to fill in the project application form.

It is also useful to take photos of:

  • The location where the heat pump is to be placed
  • The fuse box cupboard
  • The house with the view of the roof
  • The radiators  in the living room and the kitchen

We will of course help the installer with the necessary instructions for a successful installation of the Triple Solar® system.

Installing the heat pump

As can be seen in the video above about making the house fossil free, the heat pump is installed, connected and adjusted. Important is the “putting into service’ of the heat pump. This is usually carried out when the heat pump has been running for about ten days. Then a specialized Triple Solar® technician will come and check the installation and settings. The warrantee form will be completed together with user.


What does the system cost?

The costs of the Triple Solar® system depend on the size of the house. For a typical Dutch semi-detached house, the installation costs approximately € 28,000.

Check your local government for subsidies.

Background information

Where is the Triple Solar® heat pump panel produced?

The Triple Solar® PVT heat pump panels are produced in the Netherlands. The panels are assembled in our own factory in Friesland. The solar cells are produced by Bisol. Triple Solar® obtains all components exclusively within the European Union to guarantee high quality.

Because we source all parts in Europe, the PVT panel has a low carbon footprint.

TNO certification

In 2009, 2016 and 2017, the Triple Solar® heat pump panel was tested by TNO and certified as the panel that has the best properties to act as an energy source for the PVT heat pump.

Declaration of Equivalence

The Triple Solar® system has a declaration of equivalence. This statement shows that the Triple Solar® heat pump panels, together with the heat pump as a source, perform very well according to the existing standards in the Building Decree. See the registration in the database of BCRG, the Bureau Central Registration of Equivalence Declarations.


If you have further questions and have not found the answers above, please email us at [email protected]