Air-source heat pump with photovoltaic panels (single-family house)

Air-source heat pump
Heating
Cooling
DHW
Photovoltaic self-consumption
270m2 (2.906ft2) single-family house
Hoyo de Manzanares (Madrid)
Air-source heat pump with photovoltaic panels (single-family house)
+2.900 €
Annual savings
8 years
Payback
108.000 €
Lifespan savings

Starting point

Marisa and Manuel contacted us because they wanted to reduce the heating costs of their house.

At that time, their house had a propane boiler with an integrated DHW accumulator and an underfloor heating system.

On our first telephone contact, they told us that their main concern was not being able to turn on the heating system every time they wanted to have a comfortable temperature throughout the house.

If they did so, consumption would skyrocket since they had a fairly large house, with average insulation and located in a severe climate zone with very low temperatures in the winter.

In this first conversation, they told us that during the last few years they had been using heating as little as possible and exclusively in the areas where they spent time the most. Despite limiting their use to the minimum, they had been paying between 600€ and 800€ per month for gas during the winter season.

Customer doubts and preferences

Marisa and Manuel were clear about it. They wanted to be able to turn on the heating to enjoy a comfortable temperature throughout the house without having to worry about getting a very high bill.

They did not mind making a larger initial investment, but they wanted to be able to enjoy comfort at their home at an affordable price. Something that until now they had not been able to achieve due to their propane gas system.

Our proposal

From the beginning, we understood their situation and frustration since they were still paying between 600€ and 800€ per month in the winter season despite not being able to heat the house whenever they felt like it.

It was not the first time we had encountered such a case: a large house, with average insulation, located in a severe climate zone and using a propane gas system.

So, from the beginning, we knew that a geothermal or aerothermal heat pump system from the Austrian manufacturer iDM would be the most suitable equipment for this case, as they are designed to work in severe climates.

In addition, we proposed that they install a self-consumption system with photovoltaic panels to further reduce consumption.

This way, we would cover the heating and DHW demands with one single piece of equipment. In addition, with this system they could also cool their house in summer, using the existing underfloor heating.

It was clear to us that this system could provide the comfort they were looking for with very low consumption.

The heat pump work requires a small electrical consumption, which could be even more limited by having an electrical production system with a photovoltaic self-consumption system.

In addition, we prepared a complete energy study for the two options we had recommended: geothermal heat pump and aerothermal heat pump.

Thanks to our years of experience, we have found that this study is essential when making the right decision, since it details the initial costs for each system, as well as the estimated savings and consumption. That is why we always include it in our proposals.

Marisa and Manuel were pleasantly surprised when we presented this study. As they told us, it was decisive when it came to choosing the system that would provide them with exactly what they were looking for.

The decision

After analysing both options, Marisa and Manuel opted for the iDM aerothermal heat pump system since it required a lower initial investment than geothermal energy and also had very high yields, even with the low temperatures reached in the area.

In addition, they decided to complement the installation with a photovoltaic self-consumption system. This way, they would have their home heating reduced to a minimum.

This investment was even more profitable because in Hoyo de Manzanares, as in most municipalities in Spain, there are property tax rebates for self-consumption photovoltaic systems.

In this case, this bonus would be 25% for 5 tax periods. To benefit from this rebate, Energanova provided them with a visa report to be submitted to their city council.

The installation

Once we were informed about their decision, we studied the existing installation to get the most out of it. Based on this study, we decided to divide the house into 4 independent control zones, managed directly from the heat pump itself.

To do this, we placed several temperature and humidity probes via radio in different areas of the house. Thus, this family would enjoy greater comfort with reduced consumption, since they could independently regulate the temperature and schedules of the different areas of the house based on their use. No additional investments are required.

Air-source heat pump

The installation has an air-to-water heat pump by the Austrian manufacturer iDM model ML 11-18, whose performance responds perfectly to the climatic needs of the area, as it maintains very good performance even at very low temperatures. Undoubtedly, the best option for this house.

DHW storage tank

In addition, we installed a 300-litres storage tank for domestic hot water (DHW) Enertres model DPSA MAX-300 with a large exchange coil to achieve maximum efficiency of the heat pump.

Heating and cooling buffer tank

For the heating/cooling inertia, we installed an Enertres 500-litres storage tank, model DPI -500F.

While it would not be strictly necessary to install a buffer tank of these dimensions since the heat pump has an inverter compressor that adjusts to the house’s demands, we decided to install one to make the most use of the surpluses.

This was possible because the heat pump has a Navigator 2.0 control system, which integrates a photovoltaic function.

This function makes it possible to use the photovoltaic surplus and store the energy in the buffer tank in both summer and winter.

If this surplus is produced in winter, it is stored in the form of hot water for heating; while if it is produced in summer, it is stored in the form of cold water for cooling.

This thermal use of the photovoltaic surplus is a very effective way to get the most out of the photovoltaic panel installation, and therefore turn it into a more profitable investment at any time of the year.

Regulation and control

For the control of the installation, we placed humidity and temperature sensors in 4 zones of the house,

which can be controlled independently with the Navigator Pro control system integrated into the iDM equipment.

In addition, the system can also be controlled remotely and free of charge thanks to the Austrian manufacturer’s app.

Photovoltaic self-consumption

The photovoltaic self-consumption installation consists of a photovoltaic kit of 3.24 kW of peak power (12 panels * 270W) with a hybrid inverter Kostal Plenticore model. This inverter would also allow them to integrate lithium batteries in the future if they wish to do so.

The photovoltaic production potential is estimated at around 4,000 kWh per year. However, in the case of this installation we estimate that the actual production will be lower since the orientation and inclination of the panels are not ideal.

The best energy is the one transmitted by our customers

  • All
  • Professionalism
  • Reliability
  • Saving
  • Quickness of response
M

The geothermal installation plus photovoltaic panels was a success. The comfort and energy consumption that we were guaranteed was fulfilled, and despite our initial distrust towards this type of renewable energy, now we can only say that we recommend it 100%.

Marco Vaq
16 March 2021
S

Excellent company. You contact them and they quickly go to your home to decide what its ideal installation could be, solving any questions you may have. They have better prices compared to other renewable energy companies. Fast and well-executed installation. In my case, I asked for the Inega subsidy, and as an authorized installation company they take care of everything, being the first to get it so that you do not run out of it. If I had to do any other installation, I would contact them without hesitation.

Sandra
07 May 2021
E

We were delighted with the installation. We wanted thermal emitters for our village house and everything went perfectly, they work very well. The installation was very simple and fast, fulfilling perfectly with what they offered us. They are very professional and attentive. We will work with them again.

Esther Aguín Martínez
05 August 2021
B

I am going to tell my experience with this renewable energy company. First of all, I must say that I have always considered myself a ‘difficult’ person as a customer, who demands seriousness and professionalism in all the services I hire, especially for my house. Well, I have to say that on this occasion my satisfaction is maximum and I want to congratulate the whole Energanova team for its professionalism through this review. Nowadays it is not easy to find companies that do things well, and I must tell you that this company does them very well.

Begoña Romero
15 February 2021
D

I installed the air conditioning of my house with a geothermal heat pump (iDM), underfloor heating, and photovoltaic panels with Energanova. We are very satisfied with the result. As a company they are very serious and professional, they advised me at all times. With this installation, the house is very comfortable and the consumption is reduced. It is a 100% recommended company.

Da Pereira
15 September 2020
J

Pincheiro AT, our apartment complex in A Pobra do Caramiñal, bets on renewable energies, especially geothermal and photovoltaic technology. We can assure you that Energanova has greatly fulfilled all our expectations. We can confirm, and this is difficult, the honesty of this company since what was budgeted at the beginning corresponds reliably to what we have been invoiced. We can only say on the part of Pincheiro AT that we feel in good hands both for what has been done on-site and in terms of the timely follow-up being performed.

José Barroso Castro
02 October 2021
P

After wanting to invest in photovoltaic technology, I started to search the Internet for companies that could give me an estimated cost, until I found Energanova. From the start, Javier assisted me as a customer wants to be assisted, with patience and respect, because not everybody knows what a solar panel, an inverter, etc… is. Energanova is worth it; they are trustworthy. Thank you.

Poery
13 August 2020
C

Great company and quick installation. We renewed our old geothermal machine for one of the best in the market. The savings are impressive, and the electricity bill has fallen radically, but for me, the best thing is the after-sales service. You can obtain assistance at any time, both by telephone and face-to-face. Great job!

Carlos Vallejo
03 February 2021
C

Quick response and excellent professionals, I recommend them with no doubt.

Cova Charlin Villanueva
01 October 2021
J

Finally, a company that gave me what it offered. It is difficult, but if in the end you find a company like this with great professionals, the result is very satisfactory.

José Antonio Sánchez González
15 May 2020
P

Very professional!

Proyectopía La vivienda modular a tu medida
25 July 2021
J

They are great professionals, punctual, scrupulous with the work, and very serious. I will hire them again for another project. Thank you.

Jesús González
20 August 2021
M

Excellent value for money. The installation carried out has been more than cost-effective, both economically and in terms of comfort at home!

Marcos
21 May 2020
S

Good experience, good work, meeting deadlines, and everything running smoothly. We are very happy and now even more with the rise of light prices! They have also facilitated the cumbersome process of applying to Xunta de Galicia’s subsidies. I encourage people to choose this company!!! Good choice.

Silvia Jenuario
27 October 2021
K

We have had an excellent experience with Energanova. They have complied with the deadlines, the staff was very professional, and the work was clean and very fast for both geothermal energy and photovoltaic panels. We applied for the grants of the Xunta de Galicia and they were in charge of managing it completely. We are very pleased with our choice, both for the treatment and the result of the installation.

Karla Álvarez
06 October 2021
P

I am very satisfied with this company. They have advised and informed me throughout the project in a very professional manner, they are very good technically speaking, and you can tell they have a lot of experience. Aesthetically, they have taken care of every detail so that the installation was integrated into the house and the wiring was as concealed as possible. I had other more economical proposals at first, but in the end, they even got me a grant that covered a good part of the budget. In short, ENERGANOVA 100% recommended.

Pablo Rubal
16 October 2020
V

We have had at home an air-source heat pump and a photovoltaic system installed by the company Energanova for a few months. As regards savings, at the moment our electricity bill has decreased by 70% and we no longer have to order diesel! If someone is encouraged to install renewable systems, I recommend that they look for a professional company. We are very happy with our choice.

Victoria Pérez
08 January 2021
F

Energanova is a serious company, which at all times explained and helped us in everything related to the photovoltaic installation, which is perfect. They have looked for specific solutions for a much reduced space. 100% recommended.

Fernando Mejuto García
01 June 2021
J

Excellent treatment, great professionalism, and a team dedicated to finding the best technical and economic solutions for the client.

José Luis Santamaría
05 October 2021
C

I can say that they are a company in which at all times both the technical advice and professional treatment were according to my needs. If you are thinking about installing a heating/air conditioning system, do not hesitate to consider them as an option, because they are undoubtedly a solvent and serious company, which in these times is often difficult to find. Thank you Energanova!

César González
18 July 2020
A

I have worked with Energanova in the rehabilitation of a house and I am very happy with my choice. It is a close and professional company. They have a great team that explains in detail to the architect, technical architect, and builder as well as to the property the benefits of everything before, during, and after the work. Highly recommended!

Alba Balmaseda
23 April 2021
R

The company works well. They offer different alternatives after studying your problem, answering and clarifying all the doubts you may have. They provide a fast and efficient response. They are good professionals that have adequate documentation and information about the operation of the facility. They take care of all the administrative procedures, including subsidies. We are very satisfied!

Román Lago
17 July 2020
G

Excellent: great professionalism, both in the administrative work to obtain permits and subsidies, as well as in the technical work to install the equipment. They are always paying attention to the correct operation of the installation and any incidence.

Gabriel Gijarro
19 February 2021
C

We contacted Energanova because we wanted to change our old gas boiler for a more efficient and environmentally-friendly system. It is noticeable that they are specialists in this type of work since they have proven to be very professional at all times.

Carlos Martín
19 September 2020
A

Great and very fast after-sales service!!

Alberto López
06 March 2021
M

I have been advised and informed throughout the project in a very professional manner, as well as helped in the management of the subsidies. They provide customized attention and follow-up after the installation to get the most out of it. I think this is the way to switch to renewable energies, by overcoming the stress and insecurities that we may have. ENERGANOVA 100% recommended!!!!

María Soliña Opera
05 August 2020
T

Excellent service. The advice they offer is outstanding, with very professional execution. Highly recommended.

Tony Doval
23 June 2021
L

We have been collaborating for a long time with the company Energanova in all our projects involving geothermal and air-source heat pump systems, combined with photovoltaic technology. They show experience, professionalism, and seriousness from the initial drafting of the project to the final installation. They have a great technical and commercial team that advises you in each of the phases towards the best energy solution, always transferring their extensive knowledge to you. They work with the best brands and put great care into design and aesthetics. We will continue collaborating with them and of course recommending them to every person or company that needs to carry out any renewable energy installation.

La I Desing
07 October 2021
A

I have carried out with ENERGANOVA a geothermal installation with photovoltaic technology and we are very satisfied with both the execution and the consumption achieved. mos. Especially, since electricity is currently skyrocketing and we only pay 20€ per month. 100% recommended company in all aspects.

Alejandra González
11 September 2021
Y

They are good professionals and very agile. I have installed photovoltaic panels with them and I am delighted.

Yago Lorenzo
19 May 2020
M

We only have good words regarding the solution provided by Energanova. In our case, it was an air-source heat pump and solar panels. Our house is finally warm in winter and cool in summer with a monthly cost much lower than what we were previously paying. I strongly recommend Energanova as a solution to your needs.

Manuel Vera
06 May 2020
C

We contacted Energanova because we wanted to change our old gas boiler for a more efficient and environmentally-friendly system. It is noticeable that they are specialists in this type of work since they have proven to be very professional at all times.

Carlos Martín
19 September 2020
P

Very professional!

Proyectopía La vivienda modular a tu medida
25 July 2021
D

I installed the air conditioning of my house with a geothermal heat pump (iDM), underfloor heating, and photovoltaic panels with Energanova. We are very satisfied with the result. As a company they are very serious and professional, they advised me at all times. With this installation, the house is very comfortable and the consumption is reduced. It is a 100% recommended company.

Da Pereira
15 September 2020
L

We have been collaborating for a long time with the company Energanova in all our projects involving geothermal and air-source heat pump systems, combined with photovoltaic technology. They show experience, professionalism, and seriousness from the initial drafting of the project to the final installation. They have a great technical and commercial team that advises you in each of the phases towards the best energy solution, always transferring their extensive knowledge to you. They work with the best brands and put great care into design and aesthetics. We will continue collaborating with them and of course recommending them to every person or company that needs to carry out any renewable energy installation.

La I Desing
07 October 2021
T

Excellent service. The advice they offer is outstanding, with very professional execution. Highly recommended.

Tony Doval
23 June 2021
G

Excellent: great professionalism, both in the administrative work to obtain permits and subsidies, as well as in the technical work to install the equipment. They are always paying attention to the correct operation of the installation and any incidence.

Gabriel Gijarro
19 February 2021
E

We were delighted with the installation. We wanted thermal emitters for our village house and everything went perfectly, they work very well. The installation was very simple and fast, fulfilling perfectly with what they offered us. They are very professional and attentive. We will work with them again.

Esther Aguín Martínez
05 August 2021
B

I am going to tell my experience with this renewable energy company. First of all, I must say that I have always considered myself a ‘difficult’ person as a customer, who demands seriousness and professionalism in all the services I hire, especially for my house. Well, I have to say that on this occasion my satisfaction is maximum and I want to congratulate the whole Energanova team for its professionalism through this review. Nowadays it is not easy to find companies that do things well, and I must tell you that this company does them very well.

Begoña Romero
15 February 2021
J

Pincheiro AT, our apartment complex in A Pobra do Caramiñal, bets on renewable energies, especially geothermal and photovoltaic technology. We can assure you that Energanova has greatly fulfilled all our expectations. We can confirm, and this is difficult, the honesty of this company since what was budgeted at the beginning corresponds reliably to what we have been invoiced. We can only say on the part of Pincheiro AT that we feel in good hands both for what has been done on-site and in terms of the timely follow-up being performed.

José Barroso Castro
02 October 2021
J

Finally, a company that gave me what it offered. It is difficult, but if in the end you find a company like this with great professionals, the result is very satisfactory.

José Antonio Sánchez González
15 May 2020
S

Good experience, good work, meeting deadlines, and everything running smoothly. We are very happy and now even more with the rise of light prices! They have also facilitated the cumbersome process of applying to Xunta de Galicia’s subsidies. I encourage people to choose this company!!! Good choice.

Silvia Jenuario
27 October 2021
J

They are great professionals, punctual, scrupulous with the work, and very serious. I will hire them again for another project. Thank you.

Jesús González
20 August 2021
M

I have been advised and informed throughout the project in a very professional manner, as well as helped in the management of the subsidies. They provide customized attention and follow-up after the installation to get the most out of it. I think this is the way to switch to renewable energies, by overcoming the stress and insecurities that we may have. ENERGANOVA 100% recommended!!!!

María Soliña Opera
05 August 2020
P

I am very satisfied with this company. They have advised and informed me throughout the project in a very professional manner, they are very good technically speaking, and you can tell they have a lot of experience. Aesthetically, they have taken care of every detail so that the installation was integrated into the house and the wiring was as concealed as possible. I had other more economical proposals at first, but in the end, they even got me a grant that covered a good part of the budget. In short, ENERGANOVA 100% recommended.

Pablo Rubal
16 October 2020
P

After wanting to invest in photovoltaic technology, I started to search the Internet for companies that could give me an estimated cost, until I found Energanova. From the start, Javier assisted me as a customer wants to be assisted, with patience and respect, because not everybody knows what a solar panel, an inverter, etc… is. Energanova is worth it; they are trustworthy. Thank you.

Poery
13 August 2020
F

Energanova is a serious company, which at all times explained and helped us in everything related to the photovoltaic installation, which is perfect. They have looked for specific solutions for a much reduced space. 100% recommended.

Fernando Mejuto García
01 June 2021
A

I have worked with Energanova in the rehabilitation of a house and I am very happy with my choice. It is a close and professional company. They have a great team that explains in detail to the architect, technical architect, and builder as well as to the property the benefits of everything before, during, and after the work. Highly recommended!

Alba Balmaseda
23 April 2021
J

Excellent treatment, great professionalism, and a team dedicated to finding the best technical and economic solutions for the client.

José Luis Santamaría
05 October 2021
C

I can say that they are a company in which at all times both the technical advice and professional treatment were according to my needs. If you are thinking about installing a heating/air conditioning system, do not hesitate to consider them as an option, because they are undoubtedly a solvent and serious company, which in these times is often difficult to find. Thank you Energanova!

César González
18 July 2020
M

The geothermal installation plus photovoltaic panels was a success. The comfort and energy consumption that we were guaranteed was fulfilled, and despite our initial distrust towards this type of renewable energy, now we can only say that we recommend it 100%.

Marco Vaq
16 March 2021
K

We have had an excellent experience with Energanova. They have complied with the deadlines, the staff was very professional, and the work was clean and very fast for both geothermal energy and photovoltaic panels. We applied for the grants of the Xunta de Galicia and they were in charge of managing it completely. We are very pleased with our choice, both for the treatment and the result of the installation.

Karla Álvarez
06 October 2021
M

We only have good words regarding the solution provided by Energanova. In our case, it was an air-source heat pump and solar panels. Our house is finally warm in winter and cool in summer with a monthly cost much lower than what we were previously paying. I strongly recommend Energanova as a solution to your needs.

Manuel Vera
06 May 2020
C

Great company and quick installation. We renewed our old geothermal machine for one of the best in the market. The savings are impressive, and the electricity bill has fallen radically, but for me, the best thing is the after-sales service. You can obtain assistance at any time, both by telephone and face-to-face. Great job!

Carlos Vallejo
03 February 2021
V

We have had at home an air-source heat pump and a photovoltaic system installed by the company Energanova for a few months. As regards savings, at the moment our electricity bill has decreased by 70% and we no longer have to order diesel! If someone is encouraged to install renewable systems, I recommend that they look for a professional company. We are very happy with our choice.

Victoria Pérez
08 January 2021
A

I have carried out with ENERGANOVA a geothermal installation with photovoltaic technology and we are very satisfied with both the execution and the consumption achieved. mos. Especially, since electricity is currently skyrocketing and we only pay 20€ per month. 100% recommended company in all aspects.

Alejandra González
11 September 2021
M

Excellent value for money. The installation carried out has been more than cost-effective, both economically and in terms of comfort at home!

Marcos
21 May 2020
Y

They are good professionals and very agile. I have installed photovoltaic panels with them and I am delighted.

Yago Lorenzo
19 May 2020
A

Great and very fast after-sales service!!

Alberto López
06 March 2021
S

Excellent company. You contact them and they quickly go to your home to decide what its ideal installation could be, solving any questions you may have. They have better prices compared to other renewable energy companies. Fast and well-executed installation. In my case, I asked for the Inega subsidy, and as an authorized installation company they take care of everything, being the first to get it so that you do not run out of it. If I had to do any other installation, I would contact them without hesitation.

Sandra
07 May 2021
C

Quick response and excellent professionals, I recommend them with no doubt.

Cova Charlin Villanueva
01 October 2021
R

The company works well. They offer different alternatives after studying your problem, answering and clarifying all the doubts you may have. They provide a fast and efficient response. They are good professionals that have adequate documentation and information about the operation of the facility. They take care of all the administrative procedures, including subsidies. We are very satisfied!

Román Lago
17 July 2020

Find out how much you can save with a photovoltaic self-consumption system with heat pump

No initial investment. You will pay for it with the savings generated.