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Efficient gas condensing technology for the single-family house

Sustainable living comfort with gas condensing technology

Fulfilling expectations, complying with regulations

When building new family houses, the basic task is always the same: the heating system must be fit for the future, a sound investment, state-of-the-art and simple to operate. And ideally, eligible for subsidy.

Because many residential areas have a gas connection, making for comparatively low investment costs, a gas condensing solution is often the best option. In the planning process, however, it is becoming more and more difficult to find the perfect balance between technical and economic feasibility.

We live in an increasingly complex world in which ambitious energy-saving targets lead to stricter legal regulations. One result is that, in Germany, gas condensing technology can no longer meet the requirements of the Energy Saving Ordinance (EnEV) without sustainable system extensions. This poses the question of whether gas has any future in new buildings.

The future of gas: integrated solutions

Gas can be used highly efficiently in new construction: in combination with good building insulation and solar heating, modern gas condensing systems work extremely economically and reduce heating costs over the long term — without compromising comfort.

The addition of controlled living space ventilation with heat recovery not only enhances air quality and residents’ wellbeing, but also protects against mould formation, thus helping to maintain the value of the property. With the right combination of gas condensing technology, solar heating and ventilation, it is even possible to fulfil the standards required for a German ‘KfW Efficiency House’.

Your advantage: everything from a single source

Planning a modern gas heating system for a family home is a complex task. That is why Vaillant gives you everything from a single source: the latest gas condensing boilers and storage cylinders, sustainable solar heating, comfortable ventilation systems, intelligent regulation technology and connectivity as well as comprehensive support for your new construction project.

Always included: services for you and your customers

We support you as a partner, from the initial planning phase to ongoing maintenance. For example, planSOFT will assist you in laying out your solar or ventilation systems. And our warranty provides you with a persuasive case for a long-term maintenance agreement to present to your customers: increased safety and an extended product guarantee.

Using gas and solar energy with system solutions from Vaillant

Sustainable efficiency: ecoTEC exclusive and auroSTOR exclusive

State-of-the-art gas condensing technology and complementary solar heating: with this combination, gas remains fit for the future. Its high-performance heart is a gas condensing system of the latest generation. With ist high modulation range, the ecoTEC exclusive wall-mounted gas condensing boiler guarantees low consumption rates and offers smart interconnection.

For hot water comfort, you can additionally use the energy of the sun. The auroSTOR exclusive solar cylinder offers up to 500 litres holding capacity and impresses with its excellent insulation and digital temperature indicator. It draws the necessary thermal energy via the auroTHERM plus flat plate collectors — your customers’ efficient and premium-quality entry into solar energy.

Sustainability label: green iQ

We’re known for sustainability and connectivity. The ecoTEC exclusive and the auroSTOR exclusive bear the Green iQ label, which we award to environmental and intelligently interconnected products. Strict standards apply to the issuing of the label: high recyclability, energy-saving operation, long-lasting quality, efficiency class A or higher, and intelligent system technology.

Important in gas solutions in new buildings

  • Compact, space-saving gas condensing solutions
  • Simply meet German EnEV requirements through controlled ventilation of living space
  • Supporting solar systems to meet all needs
  • Eligible for KfW funding

A boiler with all the options: auroCOMPACT

Because every additional square metre in a new building means high costs, utility space is often kept to a minimum. Such situations call for compact solutions. The auroCOMPACT is a modern, compact and highly efficient gas condensing boiler. With its integrated stratified tank for heating water, it can also be easily be made into a fully-fledged solar thermal system: all the necessary solar components are already integrated. This makes the auroCOMPACT attractive to homebuilders seeking flexibility in financing.

Supported by either two or three flat plate collectors, the system can provide up to 68% of the energy needed for water heating, without additional cost. As a drain-back solar system, the auroCOMPACT VSC D with auroTHERM classic flat plate collectors can achieve especially high efficiency. Even in summer, these function stagnationfree, thus considerably reducing maintenance costs.

Energy-saving fresh air system: recoVAIR

Controlled living space ventilation fulfils strict German EnEV requirements while also offering you greater choice in building insulation. Our central ventilation system recoVAIR gives you full flexibility in air duct installation, saves energy through heat recovery and can be easily combined with other Vaillant components.

Multifunctional living comfort: multiMATIC 700

The multiMATIC 700 system controller, now also available in a wireless version, lets your customer control the entire system — via the VR 920 internet communication module and, for remote use, the free multiMATIC app.

Efficient overall solutions with high-performance individual components

Solar gas condensing system: auroCOMPACT

The auroCOMPACT offers state-of-the-art condensing technology and up to 190 litres storage capacity, with a footprint of just 0.41 m2. Available for either pressure-regulated or drain-back solar thermal systems.

  • 14 kW, 20 kW output
  • Stratified solar tank 150, 190 liter
  • Up to 68% provided by solar thermal system
  • Output as needed, up to NL 2.0
  • Energy efficiency class: heating A / hot water A

Solar cylinder: auroSTOR exclusive

The new auroSTOR exclusive is a pure water tank with high-quality, highly efficient, removable insulation — awarded the Green iQ label.

  • 3 tank sizes: 300, 400, 500 liter
  • Removable vacuum insulation cladding
  • Integrated external power supply anode
  • Digital display with temperature indicator
  • Energy efficiency class: A

Gas condensing boiler: ecoTEC exclusive

The wall-mounted gas condensing boiler ecoTEC exclusive offers a broad output range and a very wide modulation range for energy cost savings of up to 30% with solar support.

  • 15, 21, 24, 27, 32 kW output
  • Modulation range up to 1 : 13
  • Self-adapting all-gas system
  • Awarded the Green iQ label
  • Energy efficiency class: A

System controller: multiMATIC 700

Solar system, gas condensing boiler, ventilation or buffer tank: the weather-sensitive multiMATIC 700 can control all components of the system.

  • Also available as wireless solution
  • Modularly expandable, VR 70 or VR 71
  • Free multiMATIC app with VR 920
  • Intuitive start-up assistant
  • Integrated humidity sensor

Central ventilation: recoVAIR

With its pollen filter, humidity sensor, intelligent energy saving functions and modulating bypass, the recoVAIR central living space ventilation system guarantees maximum living comfort.

  • 260, 360 m3 air flow / hour
  • Up to 98% heat recovery
  • Ducted air system for all requirements
  • Enthalpy heat exchanger optional
  • Energy efficiency class: A

Flat plate collectors: auroTHERM plus and auroTHERM classic

The auroTHERM classic VFK 140 VD was developed specially for drain-back solar thermal systems, the auroTHERM plus VFK 155 for pressure-regulated solar thermal systems. With their solar yields, both collectors guarantee substantial heating cost savings.

  • Efficient back and side heat insulation
  • Laser-welded serpentine absorber
  • Keymark certified and eligible for funding
  • Anti-reflective glass, 96% transmission


The quality of your work and the attractive service packages you offer are the basis for your long-term customer relationships. With our warranty, your customers benefit from an extended service agreement — and from your close cooperation with the Vaillant factory customer service.

  1. Individually and energy-efficiently adjusted system
  2. Trust-based relationship: close cooperation with Vaillant factory customer service
  3. Highest safety and reliable product quality
  4. Ease of use thanks to service record and service ID
  5. product warranty

Software: planSOFT

The planSOFT program now also supports you online in the standardised layout and calculation of Vaillant heating systems. Additionally, it quickly and reliably generates the ErP label for products and systems.

  • Certification of ventilation concept in accordance with DIN 1946-6
  • Air volume calculation for building and individual rooms
  • Duct network dimensioning and hydraulic balancing
  • Panel dimensioning for fast adjustment of system at start-up

Internet communication module: VR 920

Thanks to the VR 920, your customers can control the entire system via the multiMATIC app, from the comfort of their sofa or while on the go. Your advantage: you can integrate the profiDIALOG remote diagnostics portal.

  • Heating control via app
  • EEBus ready

Heating homes today with the technology of tomorrow: Vaillant Green iQ

Vaillant develops heating systems that promote the convenient use of renewable energy sources. The Ecodesign Directive ErP, which became binding in September 2015, defines the minimum requirements for energy-relevant products. It informs consumers about the efficiency of products and systems through the energy efficiency label. As a pioneer in energy-saving and environmentally friendly heating technology, Vaillant goes even further.. We use the Vaillant Green iQ label to designate products which not only use very little energy but are also intelligently networked – such as the ecoTEC exclusive and the auroSTOR exclusive. This means that you can plan and develop an individual heating system for your clients, which already meets the requirements of the future.

Learn more

Find even more inspiration and information for your project: In Pavilion B2 at ISH 2017

Visit us from 14 to 18 March in Frankfurt am Main at ISH 2017, in Hall 8, Stand B93. There you will find everything you need to know about gas condensing boiler heating solutions in new family homes. Experience our intelligent system solutions for new single-family homes and discuss your projects with our expert advisers. We look forward to seeing you in Frankfurt!

More about ISH 2017