The heat pump in use

The Merki couple

Good collaboration

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How much does a heat pump cost?

Air/water heat pumps install outdoors or indoors. Outdoor units have a pipe that leads inside. Indoor units require two air ducts: one to draw in the air, and the other to release it back into the environment.

Two types of air source heat pumps

Choosing a CTA heat pump means opting for a high-quality, durable product. Even though heat pumps are generally considered low-maintenance, regular servicing and checks are required to maintain their perfect and low-cost performance in the long run. For newly installed heat pumps, our experts recommend taking out a ‘CTAplus’ extended warranty. This comprehensive protection offers cover for up to 12 years after commissioning. Alternatively, or even after your ‘CTAplus’ expires, we offer a flat-rate service contract for all heat pumps. We are a family-run Swiss company with production facilities in Switzerland.

In safe hands

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Refurbishment

Heating their home as sustainably as possible using their own solar power and free energy from nature – this is what the Merki family had in mind. The intelligent coupling of PV system and heat pump allows them to use as much of the solar power generated on their roof as possible.

More self-consumption thanks to a heat pump

Air/water heat pumps install outdoors or indoors. Outdoor units have a pipe that leads inside. Indoor units require two air ducts: one to draw in the air, and the other to release it back into the environment.

Choosing a CTA heat pump means opting for a high-quality, durable product. Even though heat pumps are generally considered low-maintenance, regular servicing and checks are required to maintain their perfect and low-cost performance in the long run. For newly installed heat pumps, our experts recommend taking out a ‘CTAplus’ extended warranty. This comprehensive protection offers cover for up to 12 years after commissioning. Alternatively, or even after your ‘CTAplus’ expires, we offer a flat-rate service contract for all heat pumps. We are a family-run Swiss company with production facilities in Switzerland.

Mr and Mrs Stricker

Visually appealing and quiet

Homeowners can use the CTA heat pump app on their smartphone or tablet to monitor and operate the heating system conveniently while they are out. The app allows you to switch off the heating or lower the temperature when you are not at home. It also lets you turn up the temperature ready for when you get back from your holiday.

App control for your heat pump

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Every heating system needs to be replaced at some point. Heat pumps are no exception. In this detached house, the old heat pump was replaced by a new one. Latest-generation heat pumps are even more energy-efficient and economical.

Heat pump replacement in a 1950s house

The heat pump installed

Air source heat pumps are installed on building exteriors or interiors. External units have a pipe that leads inside. Internal units require two air ducts: one to draw in the air, and another to release it back into the environment.

Choosing a CTA heat pump means opting for a high-quality, durable product. Even though heat pumps are generally considered low-maintenance, regular servicing and checks are required to maintain their perfect and low-cost performance in the long run. For newly installed heat pumps, experts recommend taking out our &laquo;CTAplus&raquo; extended warranty. This comprehensive protection offers cover for up to 12 years from commissioning. Alternatively, or even after the &laquo;CTAplus&raquo; expires, we offer a flat-rate service contract that we, a family-run company with Swiss-based production, offer for all heat pumps.

Peter Zürcher

Very quiet

MFH Bleiken 2

The former Bleiken community centre today houses three rental apartments, a fire station and some school facilities. Its old oil-fired heating system has been replaced with a modern air/water heat pump supplied by CTA.

Air source heat pump in converted building

Groundwater heat pumps are very efficient during operation, as the temperature of the groundwater remains constantly high throughout the year. However, this type of heat pump can only be installed in certain areas of Switzerland. The GIS maps of the cantons show the existing groundwater reserves. If you have one on your property, you must clarify with your canton whether you can use it. The water quality, the flow rate and the usage regulations are all factors that need to be considered. Once these requirements have been met, the construction work can begin: Two wells are drilled down into the groundwater layer a certain distance apart. One well is used for extracting water, and the other for returning it. The heat pump itself is installed inside the house.

Efficient solution where groundwater is available

Choosing a CTA heat pump means opting for a high-quality, durable product. Even though heat pumps are generally considered low-maintenance, regular servicing and checks are required to maintain their perfect and low-cost performance in the long run. For newly installed heat pumps, experts recommend taking out our &laquo;CTAplus&raquo; extended warranty. This comprehensive protection offers cover for up to 12 years after commissioning. Alternatively, or even after your &laquo;CTAplus&raquo; expires, we offer a flat-rate service contract for all heat pumps. We are a family-run Swiss company with production facilities in Switzerland.

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Modernisation

There is a large groundwater reserve of extremely high quality in the Aare Valley, between Thun and Bern. Part of the Münsingen community is built on this groundwater area. One neighbourhood in this community features a single-family home that uses the energy from this groundwater for heating.

Groundwater Heat Pump in a Single-Family Home

The nano-cooperative

Andreas Weber

Ideal for terraced neighbourhoods

Further information (in German)

Could a nano-cooperative be a solution for you and your neighbours? Or are you an installer interested in offering nano-cooperatives in your region?

Interested in the nano-cooperative?

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In a terraced house in Basel, a nano-cooperative is providing heat. This neighbourhood cooperative provides 90% of heating from renewable energy, instead of the previous 33%. This is despite the fact that gas-fired heating systems are still fitted in two of the three residential units.

Mini-neighbourhood heating cooperative

<ul>
<li>Heating output range (product range): 8.7 - 25.1 kW</li>
<li>Very energy efficient</li>
<li>Quiet in operation</li>
<li>Space-saving compact design</li>
</ul>

Air source heat pumps are installed on building exteriors or interiors. External units like this one in "Les Rives de Bramois" have a pipe that leads to the inside. Internal units require two air ducts: one to draw in the air, and another to release it back into the environment. &nbsp;

Two types of air source heat pump

Choosing a CTA heat pump means opting for a high-quality, durable product. Even though heat pumps are generally considered low-maintenance, regular servicing and checks are required to maintain their perfect and low-cost performance in the long run. For newly installed heat pumps, experts recommend taking out our &ldquo;CTAplus&rdquo; extended warranty. This comprehensive protection offers cover for up to 12 years from commissioning. Alternatively, or even after the &ldquo;CTAplus&rdquo; expires, we offer a flat-rate service contract that we, a family-run company with Swiss-based production, offer for all heat pumps.

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Neubau

Eleven buildings with a total of 110 flats. This is "Les Rives de Bramois" in Sion. Remarkably, the buildings only account for 20% of the site area. The remaining 80% are sustainable green spaces and places for non-motorised traffic.

Living in and with nature

Martina und Toni Frei

A never-ending energy source

Air source heat pumps are installed on building exteriors or interiors. External units have a pipe that leads to the inside. Internal units require two air ducts: one to draw in the air, and another to release it back into the environment.

Choosing a CTA heat pump means opting for a high-quality, durable product. Even though heat pumps are generally considered low-maintenance, regular servicing and checks are required to maintain their perfect and low-cost performance in the long run. For newly installed heat pumps, experts recommend taking out our “CTAplus” extended warranty. This comprehensive protection offers cover for up to 12 years from commissioning. Alternatively, or even after the “CTAplus” expires, we offer a flat-rate service contract that we, a family-run company with Swiss-based production, offer for all heat pumps.

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Owing to his job at Swisshaus, the owner had already established an interest in heating technology as part of the energy transition. Now, he’s also taken this home with him. The oil heating system gave way to an external air source heat pump from CTA.

Oil tanks are out; air source heat pumps are in

Silvretta Therme

Heat recovery as a key component

<ul>
<li>2 Optialtum OA I HT 2-66e water/water heat pumps</li>
<li>3 Optipro 230ed water/water heat pumps</li>
<li>4 Optipro 230ed brine/water heat pumps</li>
</ul>

The heat pumps on site

Über welches anstehende Projekt dürfen wir mit Ihnen fachsimpeln?

Treten Sie mit uns in Kontakt

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New building

The Silvretta Thermal Baths in Ischgl set new standards, both in terms of the experience it offers and in terms of building technology. The construction and its operation should be as energy-efficient and sustainable as possible. CTA’s heat pumps also play an important role.

Energy-efficient leisure experience at the Silvretta Thermal Baths

Stefan Wanner

Quiet, compact, urban compatibility

<ul>
<li>Aeroheat Inverta SCI (AH SCI 25a) air/water source heat pump</li>
<li>For new builds and heating system replacement</li>
<li>Quiet operation</li>
<li>Extremely energy efficient</li>
<li>Space-saving, compact design</li>
<li>Heat output range (product range): 8.7 - 25.1 kW</li>
<li><a href="https://cta.ch/en/private/products/ah-i-sci-aussen">Further info&nbsp;</a></li>
</ul>

The heat pump on site

Air source heat pumps are installed on building exteriors or interiors. External units have a pipe that leads to the inside. Internal units require two air ducts: One to draw in the air, and another to release it back into the environment.

Choosing a CTA heat pump means to opt for a high-quality, durable product. Even though heat pumps are generally considered low-maintenance, regular servicing and checks are required to maintain their perfect and low-cost performance in the long run. For newly installed heat pumps, experts recommend taking out an extended “CTAplus” warranty for comprehensive cover for up to 12 years from commissioning. Another option or a feasible follow-up on “CTAplus” is the flat-rate service contract our family-run company with Swiss-based production facilities offers for all heat pumps.

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The new, quiet, high-performance heat pump from CTA is an ideal fit for the linear architectural style of this new apartment house with view over Lake Thun.

Air source heat pump for an apartment house

Verena und Silvio Schenini

We feel we are in good hands

<ul>
<li>Optiheat All-in-One brine/water heat pump (OH 1-11es)</li>
<li>For heating and domestic hot water</li>
<li>Heating capacity range (product range): 5 - 17.8kW</li>
<li>Space-saving</li>
<li>Hardly audible</li>
</ul>

The heat pump used

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Renovation with ground-source heat pump

The Schenini family lives in a sustainably inhabited house. Sustainable, because this timber-framed building has allowed people to live here for generations. It is now also heated sustainably: the old oil-fired heating system has been replaced by a CTA ground-source heat pump.

Renewable heating in a heritage-protected building

<ul>
<li>Villa Cassel: CTAexklusiv air/water source <a href="/en/private/heatpumps">heat pump</a> with a 89.5&thinsp;kW output and a coefficient of performance (COP) of 2.36 at A-5/W55</li>
<li>Chalet Cassel: CTAexklusiv air/water source heat pump with a 28.7&thinsp;kW output and a COP of 2.28 at A-5/W55</li>
<li>Haus Bellevue: Aeroheat Inverta All-in-One air/water source heat pump with an output of 2.7-7&thinsp;kW and a COP of 4.1 at A2/W35</li>
</ul>

The installed heat pumps from CTA

Villa Cassel conversion project

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Redevelopment

Can a building at more than 2,000 metres above sea level be heated in a CO₂-neutral way? The Pro Natura Aletsch Centre in Riederalp puts this to the test and proves that it can. Air/water source heat pumps from CTA play a key role in this process. The power comes from a self-powered photovoltaic system.

CO₂-neutral at 2,100 metres above sea level

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In this farmhouse, the existing oil-fired heating system was replaced with two interconnected air/water source heat pumps using the natural refrigerant propane. The building owner is now happy to be able to heat the farmhouse using sustainable energy and an environmentally friendly refrigerant.

Harvesting air as a pair

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Using a clever redevelopment strategy, the owner of the “Alte Schmitte” development in Lohn-Ammannsegg replaced the power-hungry electric heaters of the 1980s with efficient and economical geothermal heat pumps from CTA. Each flat now has a heat pump that is roughly the size of a wardrobe. For heating and hot water, these use heat from a geothermal probe field common to each building.

12 opinions, one solution

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In 2018, a 40-year-old family home was entirely renovated to Minergie-standard. The major components for the completely new building services include an air/water source heat pump, a roof-integrated photovoltaic system and comfort ventilation.

Making new from old

<ul>
<li>Two Aeroheat CS air source <a href="/en/private/heatpumps">heat pumps</a></li>
<li>200 m2 photovoltaic system with a 30 kWp output</li>
<li>Hotel with 15 rooms (mainly summer operation)</li>
<li>Virtually self-sufficient energy supply at 2,164 m above sea level</li>
</ul>

In brief

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To generate sustainable energy and heat, the Hotel Grimsel Passhöhe relies on an air/water source heat pump from CTA, which operates using power from the hotel’s own roof-mounted photovoltaic system and thus uses virtually 100 percent of the heat from renewable energies.

A good solution in the Alpine region

<ul>
<li>New built single-family house</li>
<li>Geothermal heat pump Optiheat All-in-One with Free Cooling</li>
<li>Photovoltaic system</li>
<li>Heat pump boiler for hot water production</li>
</ul>

Heat pumps and photovoltaic systems make a strong team when combined correctly. The increasing use of both technologies offers homeowners the opportunity to organise their energy supply sustainably and cost-effectively.

Integration of the heat pump into the PV system

Choosing a CTA heat pump means opting for a high-quality, durable product. Even though heat pumps are generally considered low-maintenance, regular servicing and checks are required to maintain their perfect and low-cost performance in the long run. For newly installed heat pumps, experts recommend taking out our «CTAplus» extended warranty. This comprehensive protection offers cover for up to 12 years from commissioning. Alternatively, or even after the «CTAplus» expires, we offer a flat-rate service contract that we, a family-run company with Swiss-based production, offer for all heat pumps.

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This single-family home on the southern foot of the Jura mountains was skilfully crafted to suit the wind and weather conditions. With the geothermal heat pump, a photovoltaic system and a building that is deliberately adapted to the local weather conditions, natural energy is expertly used all year round to ensure comfortable room temperatures.

Smart energy concept with heat pump and photovoltaics

Owner of the

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New build

The new apartment building in Wilen on Lake Sarnen should be simple, economical, and low-maintenance. Thanks to building processes, an air/water source heat pump and energy-efficient appliances, this goal was achieved.

Low-maintenance and economical

<ul>
<li>Minergie A timber new build</li>
<li>Energy reference area of 186 m2</li>
<li>Optiheat all-in-one geothermal <a href="/en/private/heatpumps">heat pump</a> with free cooling</li>
<li>Heat pump boiler for hot water with 270-litre storage volume</li>
</ul>

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When an architect and a building services technician build their own home, the result is a modern construction using the best possible building technology. Overall, the family needs a lot less energy for living. And what they do need is fully sourced from nature.

Maximum comfort with less energy

<ul><li>New-build, Minergie-standard apartment building</li><li>An Optiheat Inverta Economy geothermal heat pump with free cooling, that heats a 1,000-litre domestic hot water tank and a 500-litre buffer storage tank, and also heats four out of five residential units.</li><li>An Optiheat Inverta TWW geothermal heat pump heats one of the residential units and also provides hot water using an integrated boiler.</li><li>A wine cellar split air conditioning unit provides the ideal storage temperature for fine wines.</li><li>The apartment building’s roof-mounted photovoltaic system</li></ul>

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The building services for this new-build apartment building are designed in such a way that more solar power is generated than is required for the heat pump. Room temperatures are even more comfortable thanks to comfort ventilation and “free cooling” during the summer.

Excellent energy balance

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Two apartment buildings are heated and supplied with hot water by a shared heat pump (geothermal probe). Constant geothermal probe temperatures make the system very energy-efficient during both the summer and winter.

One heating system for two apartment buildings

Head over to our private customer section and find out more about heating your single-family or multiple-family home with a heat pump. 

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Are you a private property owner interested in domestic heat pumps? 

From the single-family home to large buildings, computer centres and heat networks: in cooperation with you as a trade partner, CTA ensures the right room temperature in many different places. See for yourself and delve into our application examples. 

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CTA products in use 

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