Frequently Asked Questions

We resolve most issues remotely thanks to smart controllers that automatically report faults. If an on-site intervention is necessary, our technician usually arrives within 2–3 working days.

We have our own service team stationed throughout the Czech Republic. This allows us to guarantee high quality and speed of service. Servicing is also provided by selected authorized Regulus installation partners.

Yes, our service desk operates 24/7. We usually resolve most issues remotely thanks to smart controllers.

We provide a standard 2-year warranty on most products. For selected equipment, we offer an extended warranty: for example, 5 years for hot water storage tanks and vessels, up to 10 years for heat pumps, and 7 years for solar collectors. The current conditions for the extended warranty can be found here.

In case of equipment failure, you have several options. If you have an active RegulusRoute service, we are already aware of the problem, our technicians are actively working on it, and we will keep you continuously informed. Without an active internet connection or the RegulusRoute service, please fill out the service form or call 244 016 901 (Monday–Friday, 7:30–16:30), where our technicians will assist you.

Simply write or call our technical department. Describe the issue you are dealing with and the specific device. Ideally, attach the model designation or serial number. Our technicians will help you choose the right spare part or component so that everything runs reliably and without complications.

Yes. Thanks to our IR 14 smart controller and the free IR Client app, you can monitor and control the entire system remotely via mobile or computer. And if you have a smart home ecosystem (e.g., Google Assistant, Amazon Alexa, or Apple HomeKit), our devices can be easily integrated. This gives you even greater control, convenience, and operational automation.

All documentation can be found on the pages of specific products or in the Downloads section on our website. Furthermore, materials are available in several languages.

Yes, we provide comprehensive, tailor-made system designs. Our technicians will propose the best solution based on your house parameters and comfort requirements. A different system will suit an older retired couple compared to a young family with children, even if they live in the same type of house. Just get in touch.

Yes, free advice is part of our standard services. Our experts will help you choose the most suitable technology for your home so that it pays off. If we find out that the opposite is true and the investment would not give you a return, we simply won't recommend the system.

First, we assess your house parameters, energy consumption, and comfort requirements. Subsequently, we design the most suitable combination of technologies along with a clear calculation of costs and expected savings. We prepare every solution to measure, based on your real needs.

Yes, we cooperate with a network of proven installation partners across the Czech Republic. All of them regularly undergo training at our training center to ensure that installation is carried out professionally, efficiently, and in accordance with Regulus' recommended procedures.

Yes. We offer a free indicative calculation that shows you how much you can save each year. You can also calculate the savings when switching to a heat pump yourself in our online calculator, or connect directly with our experts for individual advice.

Yes. Since September 1, 2024, a ban on the operation of emission class 1 and 2 boilers, or boilers without a class designation (mostly older than year 2000), has been in effect in the Czech Republic. If you do not replace it, you face a fine of up to CZK 50,000. This fine can be imposed repeatedly. The ban does not apply to stoves, fireplaces, and cookers designed for direct room heating. The most common replacement is a heat pump, for which you can obtain a subsidy. Contact us, we will gladly help you transition to a greener solution.

Our energy-saving solutions can be financed with the support of various subsidy programs, not only for family houses and renovations, but also for apartment buildings, commercial or public buildings. We will gladly help you apply for subsidies and guide you through the entire process. More about subsidies.

Yes, we take care of the entire process, from choosing a suitable program and securing all documentation to submitting the application and communicating with authorities. We arrange everything for you. Just let us know.

Conditions vary depending on the type of system and the program. Generally, however, you must be the owner or co-owner of the house, use it for residential purposes, and have the installation carried out by a certified company. We will gladly assess for free what level of support you can reach.

Regulus has been operating on the market for more than 30 years, since 1992, when it was founded in Prague by Ing. Pavel Kučera and his partners. Since then, we have been dedicated exclusively to energy-saving and eco-friendly technologies for heating, cooling, and water heating.

Yes, we are a purely Czech company with a Czech owner, our own development, manufacturing, and service. We manufacture most of the key components in the Czech Republic or Slovakia and supply our technology to more than 46 countries worldwide.

We develop and manufacture key components directly in-house, such as indoor units for heat pumps, pump groups, or control software. Thanks to this, we have full control over quality and functionality. We supplement our range with proven technologies from partners who meet our high demands for reliability, performance, and long service life.

Yes. Alongside systems for family homes, we implement projects for apartment buildings, companies, public institutions, the non-profit sector, and international partners. Thanks to our own development, manufacturing, and technical facilities, we can handle even complex and individual tailor-made solutions. For example, we supplied technology to the Czech pavilion at EXPO in Milan, to an aqua center in Pardubice, or a mountain resort in Kyrgyzstan.

A heat pump can reduce heating costs by 30–70 % compared to conventional sources. For every kWh of electricity consumed, it generates 3–4 kWh of heat because it extracts the remaining energy for free from the surrounding environment. For an average family home, this means an annual saving of CZK 30,000–50,000 on heating and water heating. We will calculate your exact savings based on the parameters of your house.

The investment in a heat pump usually ranges between CZK 200–350 thousand, and it can reduce heating and water heating costs by tens of thousands of CZK per year. The specific saving depends on the original source of heating and water heating. Even without subsidy support, the payback period when replacing an electric boiler is approximately around 5 years. For the replacement of solid fuel boilers, the return on investment is generally longer, but it is balanced by significantly higher operating comfort, automatic operation, and lower environmental impact.

Modern CTC air-to-water heat pumps are designed for Scandinavian conditions and operate effectively even at temperatures down to -25 °C. Ground-to-water and water-to-water systems then work with stable efficiency throughout the year, independently of the outdoor temperature.

For an air-to-water heat pump, the space requirements are minimal. The outdoor unit is comparable in size to an air conditioning unit, and the indoor unit takes up about as much space as a standard refrigerator.

For a ground-to-water system, a horizontal collector requires a free garden area of approximately 300–500 m² (the collector is buried to a depth of 1.2–1.5 m). If you do not have enough space, a borehole can be the solution, taking up minimum space but being more demanding to implement.

During the initial consultation, we will assess your plot and recommend the most suitable solution precisely for your conditions. A correct design is crucial for long-term efficient operation.

Modern air-to-water heat pumps that we offer are very quiet. At a distance of 5 m, their noise level is comparable to a standard refrigerator (around 35 dB). The indoor unit is practically noiseless.

The installation of an air-to-water heat pump itself usually takes 2–3 days. For ground-to-water systems, it is necessary to add time for the implementation of the borehole or ground collector (3–5 days). Everything depends on the specific conditions and the readiness of the building. The installation also includes thorough training of the operator and system setup.

A photovoltaic system for water heating can reduce your hot water costs by up to 60–70 per cent. With conventional solar panels, the savings depend on the size of the system and how the electricity generated is used – typically, 50–70 per cent of a household’s total consumption can be covered. Higher coverage is possible if you have a sufficiently large battery and can make the most of the energy generated.

The most efficient solution is a combination of photovoltaics and a heat pump, where you can achieve savings of up to 80 per cent on your energy costs. We’d be happy to provide you with a precise calculation of the savings for your home during a  no-obligation consultation.

For photovoltaic power stations, the approximate return on investment without subsidy support is usually between 8 and 12 years for standard installations in the Czech Republic. In some cases where self-consumption is high (e.g. when combined with a heat pump or an electric car), the payback period may be even shorter.

Regulus bifacial panels can capture sunlight not only on the front but also on the back. As a result, they can produce up to 30% more energy, depending on the surface beneath the panel. They also utilise half-cut cell technology, which reduces electrical resistance, improves performance under partial shading and increases the panel’s efficiency. Furthermore, the double-glass design ensures greater mechanical durability and a longer service life. Our panels are manufactured in the EU and come with a 30-year performance warranty. Even after this period, we guarantee that they will still deliver 88% of their original output.

Yes, the photovoltaic water heating system is designed to be connected to your existing water heater. The system simply supplements your existing heating system and reduces your energy costs. If you do not have a suitable water heater, we offer a range of our storage tanks with the necessary accessories. The basic system can also be supplemented with a 3 kW electric heating element. Installation is quick and easy – it usually takes just one day.

Yes, photovoltaic systems generate electricity even in winter – and often more efficiently than expected. Lower solar radiation is partly offset by lower temperatures, as solar panels perform best in cool conditions. Thanks to bifacial (double-sided) cell technology, they can also capture light reflected from snow or light-coloured surfaces, which boosts their output.

With a vertical east–west orientation, it is possible to achieve more consistent generation throughout the day – even when the sun is low in the sky. Modern panels are also more efficient in diffuse light, so they produce energy even on overcast days.

And although the winter months do not yield as many kilowatt-hours as the summer months, when combined with battery storage, water heating or a heat pump, the system remains beneficial all year round.

A photovoltaic system is virtually maintenance-free. Double-glass panels have high mechanical resistance and are naturally cleaned by rain. In the event of heavy soiling (such as pollen or dust during a prolonged dry spell), it may be advisable to wash the panels with water, which will restore their efficiency. The electronic components do not require regular maintenance. To ensure the system operates at maximum efficiency, we carry out regular inspections on request, although these are optional. Overall, maintenance is minimal and does not require any specialist knowledge.

Yes, and it is the most efficient way to make full use of solar energy. A heat pump powered by electricity from a photovoltaic system operates at an efficiency of up to 400 per cent – it produces 3–4 kWh of heat from 1 kWh of electricity.

To ensure the system works as efficiently as possible, we have developed smart control software that adjusts the heat pump’s output to match the current output of the solar panels. Surplus energy is stored in a special HSK PV storage tank, so it can be used in the evening or during periods without sunshine. Thanks to government grants, this combination is more affordable than ever and can significantly reduce your energy costs.

Definitely. Although a south-facing orientation with a pitch of 35–40° is ideal, our solar systems work efficiently even when facing east–west or on a flat roof. Thanks to the bifacial technology of our panels, we achieve good results even under less than ideal conditions. We can also install panels vertically (on fences, façades) or on canopies and pergolas. Every house has its own specific conditions, which is why we always carry out an individual assessment and propose the optimal solution.

Installing a photovoltaic system for water heating takes 1–2 days; for larger systems designed to generate electricity, it usually takes 2–4 days, depending on the size and complexity of the installation. The impact on the building’s structure is minimal – mounting brackets are securely anchored to the roof’s supporting structure, and any penetrations through the roof covering are installed to be watertight.

Electrical wiring is routed through cable trays or concealed within the plaster; the inverter and, where applicable, the battery storage unit are located in the utility room. With a professional installation, the structural integrity of the roof is not compromised and there is no risk of leaks. After installation, the system is connected to the domestic distribution board and subsequently approved by the electricity distributor.

With high-quality panels, such as those from Regulus, performance declines only very slightly. We guarantee that even after 10 years, they will retain at least 92 % of their original output, and after 30 years, still at least 88 %. The annual decline in output is only around 0.5 %, which is significantly less than for standard panels. This gradual decline is already factored into the return on investment.

The entire system typically lasts 30 years or more. You should only expect to replace certain components – the inverter (after around 10–15 years) or the battery (15–20 years), if the system includes a battery storage unit.

In the Czech Republic, approximately 950–1100 kWh of solar energy falls on 1 m² of surface area per year. A typical solar system for a family of four, with a collector area of 6 m², can generate 2500–3000 kWh of thermal energy per year, which covers 60–65 % of the annual hot water demand. During the summer months, the system covers 100 per cent of hot water requirements; in the transitional seasons, 50–80 per cent; and in winter, 10–30 per cent.

For an average family (3–4 people), the optimal collector area is approximately 4–6 m², which corresponds to 2–3 flat-plate collectors. A rough rule of thumb is: 1 m² of collector area per person. The best location is on the south-facing side of the roof with a pitch of 35–40°, but south-east or south-west orientations also work well.

Collectors can be installed on top of the roof covering, mounted on a flat roof using a support structure, fitted to the façade, or placed freestanding on the property. A single collector weighs approximately 40 kg; the load on the roof is not usually a problem, but the roof’s load-bearing capacity should be checked, particularly in older buildings.

During the winter months or when there is a lack of sunlight, a supplementary heat source takes over. Switching between solar heating and supplementary heating takes place entirely automatically. The solar system is connected to your existing heat source (boiler, heat pump) via a storage tank, which acts as a reservoir for thermal energy. We recommend a combined storage tank with a built-in hot water tank, which enables the various heat sources to work together efficiently. This allows you to use solar energy not only for water heating but also for supplementary heating.

A solar thermal system is often the simplest and cheapest way to reduce the cost of water heating or, where applicable, space heating. The return on investment is usually within the range of 8–10 years, although it tends to be significantly faster for properties with higher hot water consumption.

Solar thermal systems convert solar radiation directly into heat with an efficiency of up to 70 per cent and are primarily designed for water heating and supplementary heating. Photovoltaic systems convert solar radiation into electricity with an efficiency of 15–20 per cent. For water heating, a solar thermal system is significantly more efficient – at the same output, it takes up 3–4 times less space than a photovoltaic system with electric heating. However, the two systems can complement each other well – solar thermal for water heating and supplementary heating, and photovoltaics for powering household appliances and, where applicable, a heat pump. Further information can be found here.

High-quality Regulus solar collectors have a lifespan of over 25 years without any loss of performance. They are made from durable materials (aluminium, copper, special solar glass) and tested under extreme conditions. Maintenance is minimal – we recommend only a regular check of the system pressure (once every 1–2 months), an annual service inspection and a change of the heat transfer fluid every 8–10 years.

Preparing and designing the system usually takes a few days; for more complex installations, it can take weeks. The actual installation of the collectors and wiring of the system generally takes 3 days. This is followed by commissioning and training, which we can complete in a single day. Most of the work takes place outdoors, without any disruption to your home’s interior.

A solar system is particularly worthwhile for owners of detached houses with high hot water consumption, a roof suitable for installing collectors, and a supplementary heat source that is less efficient in summer (a gas boiler) or more labour-intensive to operate (a solid fuel boiler).

Buildings with no installation restrictions (such as listed buildings or unsuitable roofs) are ideal. Conversely, a solar system is not worthwhile for houses with significant shading on the roof or properties with minimal hot water consumption. Get in touch with us – we’ll give you honest advice on whether a solar system is a  suitable investment for you.

Definitely yes. With current energy prices, the savings are even more significant than before. Heat loss through ventilation accounts for around 30–40% of total heat loss in standard homes, so the savings are considerable. What’s more, the payback period is getting shorter due to rising energy prices – it currently stands at between 6 and 8 years. For new-builds with nearly zero energy consumption, heat recovery is practically a necessity.

You’ll notice it in the quality of the air in your home. Problems with damp and condensation will disappear without you having to open the windows. Our units allow you to measure and display current readings for temperature, humidity and air quality, so you always have a clear picture of the environment you’re living in.

This is a common myth. High-quality heat recovery units with a properly configured system actually help to maintain optimal humidity levels in the house. Thanks to automatic humidity-based control, the ventilation rate is adjusted to suit current conditions. Furthermore, modern heat recovery units can also be fitted with an enthalpy exchanger, which is capable of recovering not only heat but also moisture from the exhaust air, thereby preventing the interior from becoming too dry during the winter months.

Our heat recovery units are among the quietest on the market. Depending on the ventilation mode selected, their noise level is approximately 20 dB(A), which is equivalent to the ticking of a watch. Furthermore, it is possible to set a night mode with lower output. When properly designed and installed, including the use of sound dampeners, the heat recovery system will not disturb you even at night.

Maintenance is minimal and very straightforward. It mainly involves regularly changing the filters, which you can do yourself – you only need to change the filters 2–3 times a year. A set of filters costs 500–1,000 CZK, depending on the type of unit. Once a year, we recommend a preventative service by a technician (approx. 1,500–2,000 CZK), who will check that the system is working properly, clean the heat exchanger and carry out any further maintenance as required. The total annual running and maintenance costs are therefore approximately 2,000–4,000 Kč, which is a fraction of the amount you’ll save on heating thanks to heat recovery.

Our heat recovery units are fitted with an automatic summer bypass. This means the system simply filters the air and feeds it into the house, without any heat exchange. What’s more, you can take advantage of night-time cooling – at night, when it’s cooler outside, the system automatically increases the ventilation output to help cool the house down. The unit’s intelligent control system ensures that air only passes through the heat recovery exchanger when it is beneficial to do so.

Yes, a heat recovery system is the ideal solution to problems with damp and mould. Thanks to controlled ventilation, it ensures optimal air exchange and circulation throughout the house, removes excess moisture and prevents condensation on walls and in the corners of rooms. Our units are also fitted with humidity sensors that automatically adjust the ventilation intensity to suit current conditions.

It depends on your needs and the building’s specifications. Local heat recovery units are indeed a cheaper option and may be a suitable solution for flats or individual problem rooms. However, their efficiency and control options are limited and do not match the comfort provided by a  centralised system.

For detached houses, we recommend a central heat recovery system, which ensures comfortable air exchange throughout the house, high heat recovery efficiency and the option of advanced control. Furthermore, it allows air filtration at a single point, which simplifies maintenance.

High-quality Regulus heat recovery units have a service life of at least 15–20 years. The only components that need to be replaced regularly are the filters (2–3 times a year). Fans with EC motors have a service life of 10+ years; after this time, they may need replacing (not the entire unit). The heat exchanger has a virtually unlimited service life; it just needs cleaning from time to time.

Combining a heat pump with solar panels is the most efficient solution for your home, offering potential energy cost savings of up to 80 per cent. The heat pump utilises electricity from the solar panels with an efficiency of 300–400 per cent (it produces 3–4 kWh of heat from 1 kWh of electricity), which maximises the use of solar energy. We’d be happy to provide a calculation of the savings for your specific home during a  no-obligation consultation.

Heat pumps and photovoltaic power stations complement each other very well. In most properly designed installations, the investment pays for itself quickly, within approximately 7–10 years, depending on the size of the system and how the electricity generated is used. The service life of the key components of both technologies is significantly longer than the payback period itself.

A heat pump system with photovoltaics is designed for maximum comfort. Maintenance is therefore minimal. Solar panels are virtually maintenance-free; they are cleaned naturally by rain, whilst the heat pump is checked once a year during a routine service. Thanks to our continuous online monitoring, we can also resolve most issues remotely without you even noticing.

Yes, some of our heat pumps allow for active cooling during the summer months as well as heating. The system therefore operates all year round – heating in winter and cooling in summer. This is a major advantage over conventional heating systems. What’s more, thanks to solar panels, you have plenty of electricity to power the cooling system during the summer months when there is the most sunshine, which further increases the efficiency of the whole solution.

In most cases, yes, especially if the system is well designed. A combination of a heat pump and photovoltaics usually covers up to 70 per cent of the energy required for heating, cooling and hot water. For a typical household, this means total electricity savings of up to 80 per cent; for low-energy and passive houses with a battery, we can achieve savings of up to 90 per cent. However, every house has different requirements, which is why we always design a bespoke system to suit your lifestyle and budget and deliver the greatest possible savings.

The system is designed to last for decades. Regulus photovoltaic panels have a guaranteed lifespan of over 30 years and will retain at least 88 per cent of their output even after this period. Heat pumps can last for 20–25 years, and we provide a warranty of up to 10 years on them. The storage tank can last for more than 30 years without needing to be replaced.

You should expect some components to be naturally replaced over time. The inverter is typically replaced after 15 years, and the batteries in the storage system after 8–12 years. Thanks to the modular design, everything can be easily replaced or the system expanded with new technologies without disrupting its operation.

As a comprehensive supplier of the entire system, we also provide comprehensive warranties and servicing. You can benefit from an extended warranty of up to 5 years on Regulus heat pumps and up to 10 years on the compressor. We offer a 20-year warranty on manufacturing defects and a 30-year performance guarantee on photovoltaic panels.

Throughout the system’s lifetime, we provide servicing via our own service engineers across the whole of the Czech Republic (not through subcontractors), which guarantees a rapid response and high-quality service. We also offer 24/7 service support and remote monitoring, which allows us to detect any potential problems before you even notice them.

Although the initial investment is higher than for traditional heating systems, the investment pays for itself relatively quickly thanks to significant savings on running costs and the possibility of obtaining grants. What’s more, you’ll enjoy several other benefits: the comfort of a pleasant indoor climate all year round, independence from energy suppliers, increased property value and environmental friendliness. What’s more, as energy prices rise, your savings will become increasingly significant.

You can start with the technology that is currently most beneficial to you and gradually expand the system. Even when designing the first stage, we consider future expansion and size the components so that the system can be easily upgraded. Most often, customers start with a heat pump or solar panels and add other technologies later.

The Regulus comprehensive solution is suitable for both new-builds and older homes. In the case of renovations, it can deliver even greater savings. We design bespoke solutions for every type of house – for older houses, we often recommend insulation first, followed by the selection of a suitable heat pump. For new-builds, on the other hand, ventilation with heat recovery is almost standard, significantly improving air quality. We’ll assess your house as a whole and propose the optimal combination for maximum effect.

The initial consultation is completely non-binding and free of charge. You can contact us by telephone or via the contact form on our website. During the consultation, we will discuss your needs and expectations, the basic specifications of your home and your current energy costs. Based on this information, we will prepare an initial proposal, including an estimate of potential savings and available grant options. We will then refine the proposal following an on-site inspection of your home.

A heat pump has an outdoor unit measuring approximately 1 × 1 × 0.5 m, which is installed next to the house. In the utility room, you will need around 2 m² for the indoor unit and the storage tank. Photovoltaic panels are installed on the roof and require an area of 20–50 m². Solar thermal collectors take up approximately 2–6 m² of roof space, depending on the household’s needs. The heat recovery unit requires minimal space in the loft or utility room.

The whole system is designed so that you hardly have to worry about it at all. Everything is controlled by an intelligent IR controller, which automatically optimises operation according to current conditions. You can easily adjust the basic settings via the mobile app or web interface. Thanks to remote monitoring, we keep a constant eye on the system and can resolve most potential issues ourselves remotely, without the need for service call-outs.

A heat pump can reduce heating costs by 30–70 % compared to conventional sources. For every kWh of electricity consumed, it produces 3–4 kWh of heat, as it obtains the remaining energy free of charge from the surrounding environment. For a typical family home, this means annual savings of 30,000–50,000 Kč on heating and hot water. We’ll calculate your exact savings based on your home’s specifications.

Thanks to 24/7 remote monitoring, we can detect and often resolve most issues before you even notice them. Should physical intervention be necessary, we have a nationwide network of our own service engineers who can repair faults on site, usually within 3 days. We provide above-standard warranties on all our products and ensure service throughout the entire lifespan of the equipment.

With a  high-quality heat pump, you can expect a service life of more than 20 years. The key to a long service life is correct installation and regular servicing. We stand by the quality of our heat pumps, which is why we provide a 10-year warranty. We also have a service network covering the whole of the Czech Republic and, thanks to remote monitoring, we can detect any potential problems before you even notice them – thus preventing unexpected costs.

We understand that the initial investment in a comprehensive solution can be substantial, which is why we offer several financing options. In addition to grants, we can recommend banks with loan programmes offering favourable terms. We also offer the option of phasing the project into several stages according to your financial circumstances – for example, you could start with a heat pump and add solar panels later. Our aim is to make energy-saving technologies accessible to as wide a range of customers as possible.

Solar thermal collectors convert solar energy into heat with an efficiency of up to 80% and are primarily designed for water heating, swimming pool heating and supplementary heating. Photovoltaic systems convert solar radiation into electricity with an efficiency of around 20 per cent. For water heating, a solar thermal system is significantly more efficient – it requires much less surface area than a photovoltaic system with electric heating.

Yes, solar thermal and photovoltaic systems complement each other. Solar thermal is most effective for water heating and supplementary heating, whilst photovoltaic systems cover household electricity consumption. By combining both systems, you can achieve maximum energy self-sufficiency and savings.

The payback period for a solar thermal system is usually 8–10 years, and for photovoltaics 8–12 years. The specific payback period always depends on the building’s hot water and electricity consumption, current energy prices, the quality of the design and installation, and the extent to which consumption is optimised.

Yes, but with lower efficiency. Even in cloudy weather, collectors and panels still generate energy, although output does decrease. A well-designed system takes these fluctuations into account and makes efficient use of the available energy.

Yes, we provide both warranty and post-warranty servicing throughout the Czech Republic. We have our own service network, so we won’t keep you waiting long. If an intervention is necessary, a technician will usually arrive within 3 days.