Modern heating using environmental heat

Single-family house modernisation

The couple currently heats with gas. The basic conditions for using renewable energies are good in the house, which was built in 2008.
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Christiano and Sofia do not want to compromise and want to further improve the technology of their heating system. Therefore, they are looking for an efficient heat pump heating system that does not use refrigerants that are harmful to the climate. They also want to avoid extensive renovation work.
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Ideal conditions for renewable energies

Christiano and Sofia live in a residential area on the outskirts of Hamburg with their two children. They want to reduce the CO₂ emissions of their house by using renewable energies.

An investment in the future

If Christiano and Sofia tackle a job in their house, they do it right – even it takes time and money. Apart from the environmental aspect, they want their new appliances to save them money and make the house fit for the future. To this end, they are not only planning to replace their old gas heating system with a modern system, they are also looking for further ways to optimise their building services in this regard.

Project challenges

The new renewable heating system works best with low flow temperatures. As Christiano and Sofia’s house is already equipped with low-temperature radiators, they can continue to use them for the new heating system. They do not need to convert to an underfloor heating system.

For this reason, and because the insulation is already of a very good standard, they can simply retrofit a heat pump heating system. However, only a small range of compact and efficient appliances run on refrigerants such as propane (R290: GWP 0.02 according to IPCC AR6).

Reasons for choosing a new, modern heating system

The couple chose a heat pump system for their building project. They also decided to install a decentralised mechanical ventilation system as part of the overall building services concept.

03. Highly efficient system

The heating system uses environmental heat so it consumes no fossil fuel and therefore emits no CO₂or particulate matter. Likewise, modern controlled mechanical ventilation systems are very efficient. In this way, the couple can significantly reduce their long-term energy consumption. However, the heating appliance is powered by electricity, so the CO₂ emissions depend on how that electricity is generated. Christiano and Sofia could prevent this by using electricity from renewable sources. A refrigerant with a low global warming potential in the new heating system reduces its climate impact further.

04. Healthy indoor air around the clock

They also decide to install a ventilation system. It supplies all rooms of the home with fresh, clean air all day long. This is good for the health and improves wellbeing. The couple wants to install a decentralised solution that does not require as many major modifications as a central system.

Product solutions for Christiano and Sofia

When researching their project, Christiano and Sofia came across WOLF products time and time again. They were particularly impressed by the excellent quality and five-year guarantee.

CHA monoblock heat pump

They select the CHA monoblock. This compact and powerful appliance has an output of 7 kW and, as desired, uses the natural refrigerant R290 (GWP 0.02 according to IPCC AR6). They are less bothered about how the product looks but are nevertheless pleased with its modern design.

CWL-D-70 mechanical ventilation unit

The CWL-D-70 meets the family’s demands as it is a decentralised system. It purifies the air using high-performance filters, generates an air flow with an even temperature and can contribute to passive cooling in the summer.

Holistic solution

The building services solution selected by Christiano and Sofia is modern and economical. In the next step, the couple plan to install a photovoltaic system to cover their own electricity requirements. They will then be able to run the heating system at almost no cost by using the electricity produced in their own home.

Support for Your Home Project

Choosing a heating, ventilation or energy system for a home can involve a range of technical and project-related considerations. WOLF provides information and planning resources to support the assessment of different system options and project requirements.