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viessmann gas condensing boilers

Gas Condensing Boilers – High-Efficiency Heating

Cutting-edge condensing technology from Viessmann offers optimum energy utilization, resulting in maximum savings for you.

Advanced condensing technology

A gas-fired condensing boiler is one of the most economical and clean ways to heat your home or commercial property, and it can reduce your monthly heating bills and environmental footprint. The Viessmann line of gas condensing boilers offers highly efficient and reliable residential and commercial heating solutions for your home or business.

Our comprehensive product portfolio lets you take energy savings a step further. Reduce your energy costs by integrating domestic hot water production with your boiler, and manage the entire system with one of our control solutions. Or put the sun to work for you by adding a solar thermal package. With the entire system available from a single, trusted source, you don’t have to compromise – total system performance and additional energy savings go hand-in-hand.

Residential gas condensing boilers

Vitodens 100-W

The perfect mix of value, quality and performanc

Vitodens 200-W

Advanced technology and performance

Vitodens 200-WVitocrossal 300 CU3A

Advanced condensing technology

Vitodens 200-W B2HA

Expanded capacity for large homes

Vitodens 222-F

Smart, compact space heating and DHW

Commercial gas condensing boilers

Vitocrossal 200 CI2

Most advanced floor standing boiler with small footprint and high mass water volume

Vitodens 200-W Cascade Systems

Performance and efficiency

Vitocrossal 300 CA3B

Our most powerful gas condensing boiler

Vitocrossal 200 CM2

A versatile solution that’s highly efficient and reliable

Not sure which boiler you need? Try out our Product Finder.

Answer a few short questions and we’ll recommend a boiler that matches your requirements. It only takes two minutes.

Good reasons to update your heating system

Many homes have heating systems that are 20 years of age or older. For most of these older systems, a significant share of energy and money go to waste every year due to outdated technology and an improperly sized system. Along with wasting energy, these boilers contribute to climate change by needlessly releasing harmful CO₂ emissions.

Save money and reduce emissions

By replacing an outdated system with a gas-fired condensing boiler, a homeowner may be able to save up to 30% on their annual heating bills, when using an outdoor reset control with a proper heat loss calculation. In addition to significant cost savings, environmental savings with reduced CO₂ emissions can also be achieved.

Meet the Vitodens and Vitocrossal product families

Enjoy warmth and energy savings with Vitodens

Compact, energy efficient and economical with a reputation for exceptional quality and reliability.

Vitocrossal: The perfect boiler for every application

Vitocrossal boilers boast a range of features including advanced condensing technology, powerful and intuitive controls, exceptional efficiency and low emissions.

How condensing technology helps you save

Condensing technology not only utilizes the heat from the combustion of gas, but also the unused heat that would escape up the chimney with a conventional heating system. Condensing boilers can achieve excellent efficiency of up to 98% by extracting the majority of the heat contained in the flue gases and converting it into additional heating energy. This helps you to save money and reduce your carbon footprint.

To achieve this, Viessmann condensing boilers are equipped with corrosion-resistant, stainless steel heat exchangers, which cool the flue gases before they are routed into the chimney. By doing this, the water vapor contained within the gasses is deliberately condensed, and the additional heat released is transferred into the heating system.
By choosing a condensing boiler, you will not only benefit from reduced energy consumption, but will also make an active contribution towards reducing your carbon footprint and protecting the environment.