Combine the best of both worlds with hybrid heating.

What is a hybrid heating system?
The dynamic duo: that’s hybrid heating.
A hybrid heating system combines at least two different heating technologies to deliver efficient and reliable warmth for your home. The most recognised hybrid system consists of a gas boiler with a heat pump, but it can also pair an oil or gas boiler with a solar thermal.
In the setup with a heat pump and a gas or oil boiler, the heat pump efficiently manages most heating needs during milder weather. When temperatures drop, the boiler provides the extra warmth needed. This dual approach, often used for older less insulated homes, ensures your home stays cosy all year round, adapting seamlessly to varying energy demands and external conditions.
Advantages of hybrid heating systems
Why go hybrid? The benefits await.
- Smart savings.
Hybrid systems can significantly reduce your running costs by always selecting the most efficient heat generator.
- Reduced carbon footprint.
By utilising less gas and leaning more on renewable energy, you can significantly lower your home's carbon emissions.
- Uninterrupted comfort.
With the ability to switch between heating sources, hybrid systems ensure consistent warmth throughout the year.
- Effortless adaptability.
These systems adjust to varying heating demands, making them ideal for homes with lower insulation levels.
How hybrid heating systems work
The smart logic behind hybrid heating.
- Bivalent-parallel operation
- Bivalent-alternative operation
- Tariff-controlled (trivalent) operation

Parallel operation at peak times.
One way of operating a hybrid heating systems is to switch both heat generators on in parallel and at the same time for heating or hot water. The heat pump, as an eco-friendly device, continuously provides the base heat. The crucial setting is the outdoor temperature at which the gas boiler is switched on or off to support the heat pump. This point is called the bivalence point and is calculated and defined by a technician specifically for your house and your system.


The right choice for your home
Find out if hybrid heating is your perfect match.
If you live in a property with high heating demands or poor insulation, a hybrid heating system might be the perfect solution. It delivers efficient heat even on colder days without requiring extensive refurbishments, offering a climate-friendly alternative when a heat pump alone isn't sufficient. Ideal for those seeking greater independence from fossil fuels, these systems enable a gradual shift to renewable energy, reducing gas consumption and running costs while enhancing energy efficiency over time.
Transform your home with expert installation.
Installing a hybrid heating system requires careful planning and consideration of your home's unique requirements. Factors such as the existing heating system, property size, and insulation levels will influence the installation process. It’s essential to consult with qualified installers who can provide tailored solutions and ensure optimal performance. With our best-in-class service network, we can help you find skilled installers nearby, making your project a success from start to finish.


Costs of a hybrid heating system
Investing in comfort: what costs to expect.
The purchase price of a hybrid heating system depends on factors such as the presence of a modern condensing boiler and the need for an additional storage to meet hot water demand. Evaluating your home's heating needs and any required conversion work with a professional heating expert is crucial before planning.
In addition to the purchase price, installation costs must be considered and can vary based on several factors. These include the type of gas boiler, the need for a new flue system, the type of heat pump and its installation complexity, and any other upgrades to your home's infrastructure.
Efficient heating solutions for modern homes
Imagine your home with an integrated hybrid heating system from Vaillant.
- 1/5Air-to-water heat pumparoTHERM plusOur most efficient air/water heat pump reduces operating costs.Get more details

Efficiency in its most flexible form.
- Our most efficient air/water heat pump reduces operating costs.
- Our quietest air/water heat pump with 28 dB(A) for a peaceful neighbourhood
- Maximum freedom of positioning thanks to uniquely minimal protective zones.
- Elegant design in black grey
- Including free 5-year guarantee
The new standard: Our new aroTHERM plus heat pump always finds its place. This is because our safety concept, which is unique in the industry and minimises the necessary distances. Equipped with the natural refrigerant R290, it is our most efficient air-to-water heat pump and generates up to five parts heat* from one part electricity. Available in output sizes from 3 to 12 kW, it is ideal for one-family houses - even with existing radiators, of course.

- 2/5Wall-hung boiler gas, condensing, combiecoTEC plusIdeally suitable for replacements in existing buildings.Get more details

Ideally suitable for replacements in existing buildings.
- Automatic adaption to fluctuating gas types and qualities
- Future-proof sustainability ready for up to 20% of hydrogen
- Extendable with renewables like solar, thermal, or photovoltaics for even more efficient heating
- Easily connected to myVAILLANT connect internet gateway via plug and play for smart heating
- Handy monitoring with our new design and operating concept
Especially in existing buildings with gas grid connections, our ecoTEC plus boilers are a swift and the most popular solution to replace old gas boilers ecologically and efficiently: Made of a material that's 80% recyclable, they're easily installed using the given connections, provide reliable quality and can even utilise up to 20% of hydrogen for outputs of 10-30 kW – making it a future-proof choice that can reduce consumption and operating costs.

- 3/5Domestic hot water cylinderuniSTOR plusHot water cylinder for different requirements.Get more details

Hot water cylinder for different requirements.
- Flexible: The right choice for many applications
- Can be combined with heat pumps, boilers and solar
- Efficient hot water comfort
- Hot water volumes for families of 3 to 10 people
- Reliable and durable cylinder made in Germany
It doesn't matter whether you're talking about detached houses, apartment buildings or commercial premises: The uniSTOR plus VIH domestic hot water cylinder with a capacity of 200 to 500 litres is the solution you're looking for. It fits perfectly with various heat sources such as heat pumps, gas condensing boilers and solar thermal systems. Hot water production is efficient because the cylinder's heat exchanger is matched to the characteristics of the connected heat generator, thus maximising its performance. In addition, the cylinder insulation is firmly connected to the cylinder, reducing heat loss. And last but not least, the high-quality materials ensure safe operation over a long period of time.

- 4/5AccessoryHybrid connection setThe compact hydraulic knot in hybrid systems.Get more details

The compact hydraulic knot in hybrid systems.
Hybrid connection sets bring perfect harmony to your home. They seamlessly balance the heat flows from your heat pump and boiler, delivering smooth heating, cooling, and hot water production.
- Space-saving design: Fits directly under the boiler, leaving more room for your home.
- Compact and complete: Includes everything needed for safe and high-performance operation.
- Optimised efficiency: Maximises your heat pump’s potential, often replacing the need for a buffer.

- 5/5Weather-Compensated ControlsensoCOMFORTOur most refined control, ready for the most advanced systems.Get more details

Our most refined control, ready for the most advanced systems.
- Easy handling of the whole heating system for perfect individual comfort
- Ready for smart home integration with different voice assistants
- Effortless integration of renewables from heat pumps to ventilation
- Full control over complex systems with our sensoCOMFORT
- Modern control design perfectly blends into today's living spaces
The best thing about our ever more advanced heating systems? Their increasingly simple handling – with sensoCOMFORT: Our most elaborate weather-compensating system control for easy management of up to 9 heating circuits, hot water production, photovoltaics, solar thermal and ventilation.





