Heat pumps
+ photovoltaics
Asset 31
Heat pumps
+ photovoltaics
Asset 31
Heat pump combined with photovoltaic installation. Does it pay off?
Combination of heat pump and PV installation is currently the cheapest way to heat your home. In the long run, this set generates the greatest savings.
Remember that the expected lifetime of photovoltaic panels and pumps is 20-25 years.
Proper selection of equipment and the size of the PV installation, can reduce electricity bills by up to 90%, while eliminating other costs associated with heating the house.
With this duo you can get almost free, CLEAN HEAT.

The Renewable Energy Sources Act, which allows surplus electricity produced by PV panels to be returned to the grid in summer and 80% of it in winter (installations up to 10 kWp) without additional costs, has made the use of heat pumps in combination with photovoltaic installation the most economical and ecological source of heat.

In summer, when the output of the PV installation is at its highest, the surplus is ``stored`` by the utility company so that it can be taken back in winter when the demand for heat is highest.

How much PV capacity is needed to meet the electricity demand of the NETSU pumps?
The selection of PV installation is a key factor so that the user does not have to worry about heating costs. It should also take into account the additional 20% of energy that will be dedicated to prosumer dropouts (30% for installations over 10 kWp).
The energy consumption of NETSU pumps is dependent on many factors such as the energy class of the building, the size of the house, the required indoor temperature, the number of people using the DHW, the mode of operation and many other components.

However, you can zoom in on an example of a detached house in Lodz, Poland, in a nutshell.
The house was built in accordance with current regulations in 2021.
Detached house with attic with usable area of 130 m2
Number of inhabitants 4.
Ventilation system with recuperation.
Assuming the above parameters, the recommended NETSU pump is NET-06-1PH

Approximate demand for electricity for the pump alone is about 4000 kWh/year.

After adding the average energy consumption of domestic appliances, at 3000 kWh/year, taking into account self-consumption and prosumer rebate system, the suggested power of photovoltaic installation is 7.5 kWp.

Asset 30
How do heat pumps work with PV installation? What is SG Ready about?
The SG Ready label can only be used by manufacturers of heat pumps that have a special controller for smart grid integration.
Heat pumps with SG Ready designation are able to realize four states of operation, depending on the signal at the input to the device.

Thanks to this it is possible to control the device so that during the overproduction of electricity, coming from the photovoltaic installation, it is possible to increase the temperature of the domestic water or to heat up/cool down rooms.

The functionality of the NETSU SG Ready heat pumps allows the partial use of electrical energy from the sun, to accumulate it as thermal energy.

Analyzing the technological development of a wide range of household appliances and consumer electronics, it is certain that in the near future most of them will have the opportunity to be connected to the smart grid.

Such an option will allow interoperability of devices and the ability to control by the user, to optimize the use of electricity.


The “Clean Air” programme is the government’s flagship programme in the fight against smog.

The subsidy is addressed to owners or co-owners of single-family houses or premises separated from them.

The subsidy is earmarked for replacing old and inefficient solid fuel heat sources with modern heat sources that meet the highest standards, and for carrying out the necessary thermo-modernisation work on the building. Thanks to the program, it is possible to obtain funds both to replace the old stove and to create your own micro-power plant.

By replacing the so-called “kopciuch” with a NETSU heat pump you can apply for a subsidy of up to 25 thousand PLN, and additionally installing a photovoltaic system you can increase the amount to as much as 30 thousand PLN.

For beneficiaries eligible for the increased level of subsidy, these amounts are respectively 32 thousand zlotys and 37 thousand zlotys.

The increased energy efficiency class of NETSU heat pumps (A++/A+++), with the basic level of subsidy, allows to obtain from the above-mentioned governmental program the refund of actually incurred costs at the level of 45%. This is the highest assumed level of co-financing for air-to-water heat pumps.

Devices in energy efficiency class A+/A++ mean reimbursement of the costs incurred at the level of 30%.


The Green Appliances and Materials List was introduced so that the beneficiaries of the “Clean Air” programme could be sure that the devices on it meet the technical requirements specified in the programme.

According to the website czystepowietrze.gov.pl, ultimately it is planned that in 2021 in the “Clean Air” only materials and devices included in the “green” list will be qualified.

NETSU brand guarantees the delivery of proven, ecological solutions, which is confirmed by the entry of our products on the List of Green Devices and Materials supervised by the Institute of Environmental Protection.


Support from the National Fund for Environmental Protection is not the only one aimed at eliminating solid fuel heat sources and improving air quality. Additional funds may also be obtained under municipal and communal programs.

Many local government units mobilize their residents and remind that the ban on using non-class boilers will appear at the end of 2023, while for class 3 and 4 boilers the replacement deadline expires at the end of 2027, so they refinance the purchase and installation of NETSU heat pumps from their own budgets.

In addition, under the thermal modernization relief, during the annual tax return, you can get a partial refund of tax.

Thanks to these programs, the amount of investment is significantly reduced, and by combining heat pumps with photovoltaic installation, you can obtain ecological and almost free in use heating of the building.