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Heat pump

Heat pump

The silent force behind sustainable and economical living
Comfort, savings and sustainability in one system

Cooling and heating

Do you want to heat your home energy-efficiently while preparing it for the future? Then a heat pump is a smart choice. With minimal consumption, you extract maximum heat from the air around your home. The result? A stable indoor climate, a lower energy bill and a home fully aligned with the energy standards of tomorrow.

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CLEYS

Why a heat pump from Cleys?

  • Tailored advice for your home and consumption
  • Choice of air-to-air and air-to-water system
  • Perfectly compatible with solar panels and home battery
  • Experienced in-house installers
  • Neat finish and custom installation
  • Ready for the 2050 energy standards
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What is a heat pump?
Road to the future

A heat pump heats your home in an energy-efficient and environmentally friendly way by extracting heat from the outside air and converting it into comfortable indoor warmth. It is a smart alternative to a traditional boiler and works optimally in combination with underfloor heating or low-temperature radiators. If you combine your heat pump with good insulation, for example after façade or roof works, you maximize the efficiency of your installation. With a heat pump, you need less gas, or you can go completely gas-free. That’s good for the climate and also means you’ll save money on your energy bill, while taking a big step towards the sustainable, future-proof home of tomorrow.

For permit applications for new builds and rebuilds, a natural gas connection has been prohibited in Flanders since January 1, 2025. From July 1, 2025, when replacing a gas boiler, you will pay 21% VAT instead of 6%, while VAT on heat pumps will remain at 6% for both new builds and renovations.

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What are the benefits?

  • Much more efficient than a traditional boiler
  • Compatible with underfloor heating
  • Low energy cost with good insulation
  • Ecological and comfortable solution

Which heat pump suits my home? There are many different types of heat pumps. At Cleys, we choose the Bosch Compress 3400i series. These are available in different versions from 6.9 to 20.7 kW, which means that regardless of your home or preferences, you can always choose the most ideal solution that fits your needs.

BOSCH Compress 3400i AWS 6 ORM-S (6 kW): for well-insulated new-build homes or smaller houses with low heat loss
BOSCH Compress 3400i AWS 8 ORM-S (8 kW): ideal for an average family home and well-insulated houses
Bosch Compress 3400i AWS 10 ORM-S (10 kW): for average family homes with standard insulation
BOSCH Compress 3400i AWS 12 ORM-S (12 kW): for average family homes with standard insulation
BOSCH Compress 3400i AWS 14 ORM-S (14 kW): for larger homes or houses with less efficient insulation

How does a heat pump work?
Operation

A heat pump extracts heat from the environment (such as air or water) and raises it to a higher temperature level so you can heat your home with it. It uses a little electricity, but what you get in return is impressive: with 1 kilowatt-hour of electricity, a heat pump produces an average of 3 to 5 kilowatt-hours of heat. By comparison, with electric heating it’s simply 1 to 1. A heat pump is therefore a smart, energy-efficient and sustainable way to heat, and sometimes even cool. At Cleys, we offer 2 types of heat pumps.

Air-to-air heat pump
Cooling and heating.

With an air-to-air heat pump, the system actually works like a reversed refrigerator. The outdoor unit extracts heat from the outside air and transfers it indoors through indoor units. This type of heat pump is often used as an air conditioner with heating function.

  • You need multiple indoor units in the rooms you want to heat or cool
  • Works best for individual rooms or floors
  • Relatively quick to install
  • Interesting as a supplement to existing heating or in renovations without underfloor heating

The advantage here is that you can also cool in summer. Convenient for bedrooms or living spaces that heat up quickly.

Air-to-water heat pump
full-fledged replacement

The air-to-water heat pump also extracts heat from the outside air, but transfers it via a buffer tank or boiler to your central heating system (underfloor heating or radiators).

  • Only one central unit in your home
  • Heats your entire house and domestic hot water
  • Ideal for new-build homes or major renovations with underfloor heating
  • Higher efficiency and more comfort
  • Higher investment, but also greater savings in the long term

This version is a full-fledged replacement for your traditional heating system and is also eligible for subsidies from the Flemish Government.

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Reviews
(203 Reviews})
Herman Fistels (Edegem) - “Highly professional installation of facade insulation at a competitive price. Rarely have I seen so much effort made to minimize disruption and tidy up so thoroughly after the work. Top-notch work!”
Johan Bergmans (Deurne) - “Cleys bv professionally insulated our rear facade and made it presentable again with crepi.”
Isabel Nuyttens (Sint-Niklaas) - "This company has many strengths: Speed: communication, site visit, quotation, and delivery. Communication: friendly and quick response to questions via email. Focus on a personal approach and customer service. Reliability and solid quality. Simplicity: the quote is clearly laid out, options can be easily adjusted, and they give clear advice about the materials and options. Customer friendliness: all staff are very sympathetic and take your wishes into account. Payments: are transparent and made in installments. This company is the right choice if you prioritize good communication, clear agreements, sustainable, long-term solutions, and quality without any headaches."
Christine Heremans (Ghent) - “From quotation to delivery, everyone provided perfect support... friendly... helpful with our questions... a top company... the end result is superb, thanks to everyone.”
Laurent Peeters (Edegem) - “Insulation of apartment facade, more than satisfied with this company! From quotation to completion: professional approach, always willing to provide more information. The installation team works extremely punctually and competently.”
Ellen Van Landeghem - “Very satisfied with this ‘young’ company. After visiting the site, we received a very clear and accurate quote. Excellent value for money. They respond very quickly to emails. The work was carried out very smoothly. Hats off to the team that came to work for us. The site was also left very tidy afterwards. We definitely recommend Cleys!”
Anke Decoster (Kruibeke) - “Very satisfied with this company, very quick, friendly, and personal contact, our side wall was sprayed with cork in record time.”
Thomas De Baets (Gent) - "Cleys exceeded all expectations with the renovation of our terraced house's facade! We appreciated the smooth communication with everyone involved, the manager, site supervisor, and craftsmen, as well as the accurate planning. Diego, our site supervisor, doesn't sell empty promises, but sound advice based on practical experience."
Greet Debusschere - “We had our facade insulated and covered with crepi. We are very satisfied with our collaboration with Cleys. A professional team from quotation to delivery. Everything was cleaned up nicely at the end of the work. Good guidance from site manager Diego. And a fantastic end result. Thank you, everyone.”
Bert De Hertogh (Beveren) - "We would like to express our sincere thanks and admiration for the CLEYS team. From the first contact to the final finish, the collaboration went smoothly. They carried out both our facade renovation and roof renovation with the utmost care and craftsmanship, and the end result is simply beautiful! The CLEYS team excels in professionalism and customer focus. They kept us informed of every step in the process and always worked according to plan, without delays. What's more, we immediately noticed how meticulous and detailed their work was. Their eye for detail made all the difference and ensured a finish that exceeded our expectations."