Absolutely! All our products have three standard modes with different water temperatures: normal mode, economy mode and comfort mode. In addition, you can temporarily activate an extra hot water function, which can also be scheduled if you wish.

The temperature of your home is a key element in providing you with the comfort you desire. Using the house's heating curve, you can easily meet your temperature needs.

There are two values that determine the temperature, the slope of the curve and the curve adjustment. The installer will help you set these values. If you need to adjust later, you can use the following method:


If it is too cold indoors:

# If the outdoor temperature is lower than zero degrees: increase the value at curve inclination a few degrees. Wait a day to see if further adjustment is needed.

# If the outdoor temperature is higher than zero degrees: increase the curve adjustment value by a couple of degrees. Wait a day to see if further adjustment is needed.

If it is too hot indoors:

# If the outdoor temperature is lower than zero degrees: decrease the value at curve tilt a couple of degrees. Wait a day to see if further adjustment is needed.

# If the outdoor temperature is higher than zero degrees: decrease the value at curve adjustment by a couple of degrees. Wait a day to see if further adjustment is needed.

All our heat pumps are designed for reliable operation with a long service life. If your heat pump alarms, it may in some cases be something you can fix yourself. In our manuals there is information on troubleshooting and appropriate measures. If you do not have your own manual, you can find it on our collection page for manuals, search for the product name in the search box.

It may also be that an installer needs to be consulted. 

At CTC we do not sell individual parts to private individuals. Please contact your dealer/installer for assistance.

Most energy-related products (including heat pumps, refrigerators and light bulbs) must have an energy label so that consumers can easily compare energy efficiency and other basic facts. Energy labeling is law in the EU. New labels can be printed here.

On our website there is a clear map with all installers and dealers marked. Type in the name of your city and all the nearby ones will appear.

We have a large network of installers to help with the installation. 

It is also the installer you should primarily turn to if you have any questions once the installation is done.

The serial number is useful to have at hand when contacting insurance companies, installers or us at CTC. Where to find it depends on the product you have.

In the vast majority of cases, this is fine. We notice that many people are interested in keeping their old wood boiler. Not because it will be used continuously with the new boiler, but more as a security in case something happens.

For example: If it is a cold month and the air/water heat pump does not provide as much energy as you want, you can use your wood boiler instead of buying electricity.

At CTC, we ensure that this option is available through various accessories. The installer then arranges a docking system so that the systems can run together.

There are a few exceptions, but sometimes the rules of the Swedish Energy Agency put a stop to it. If the boiler is too poor, it should not be docked with a new system. If you have specific questions about your situation, contact your installer.

All heat pumps have parts to be recycled. You can ask your installer for help with this, or you can go to the recycling station yourself. It is important that the pump's refrigerant, compressor oil and electronics are properly recycled. CTC's other products should also be recycled, contact an installer if you are unsure how.

At CTC, we have a network of installers and dealers who handle sales. You can get a free home visit and receive tailored recommendations based on your individual needs.

When it comes to service and warranty issues, you should primarily talk to your installer. The installer is the one who knows your particular heating system and can give the best advice.

Choosing the right size is important for your satisfaction and to save as much money as possible. Several factors come into play, including the size and layout of your house, the indoor temperature you want and where you live.

Want to know what's best for you? Book a free home visit by an installer. 

Several factors come into play, including your current energy system and how much electricity you use in a year. This is combined with the price of electricity, of course.

The placement of the heat pump should be done so that the house is not damaged and the condensation water can easily drain into the ground.

Our manuals contain easy-to-understand instructions on how to prepare the ground in the best possible way. 

Information on the age of your CTC product can be found in the serial number. The four middle digits indicate the year and week, e.g. the product 7310-1304-1212 was manufactured in week 4 of 2013.

And how do you find the serial number? It is located in different places depending on the product.

When we are asked this question, we ask two counter-questions: What are your hot water needs? What kind of heating system do you have? Because that's what determines which option is most suitable.

The CTC EcoZenith i350 is an indoor module with very high hot water capacity. The product is equipped with a diverter valve instead of a shunt valve. In simple terms, this means that the water flow from the heat pump either goes directly to the house's heating system or to the hot water tank. This means that you always get a very high hot water capacity.

The product is best suited for those who have a large hot water requirement and in most heating systems on the market. If you have a smaller floor heating system or single pipe system, CTC EcoZeith i250 is more suitable.


CTC EcoZenith i250 is an indoor module that works with a shunt valve instead of a gear valve. This means that the product constantly works with the volume of water in the product's accumulator tank and in the house's heating system. The product produces hot water at the rate of water consumption.

This means that the product is best suited for those with normal hot water needs and virtually all heating systems. It is also perfect for smaller underfloor heating systems or houses with single pipe systems.

The clever thing about an air-to-water heat pump is that it harnesses the renewable solar energy in the outdoor air and sends it into the home's hydronic heating system. In this way, the heat pump converts outdoor air into hot shower water and heated radiators.

The technology behind an air-to-water heat pump is advanced and, in short, involves stretching the laws of thermodynamics. The outdoor air sucked into the air/water heat pump's outdoor unit is used to create hot gas that helps to heat the water in the home.

Sub-zero temperatures and snow make extra demands on your heat pump. Follow our five tips to take the best care of it.

1. Check the grilles to ensure that snow or leaves do not block the airway on the outdoor unit.

2. Make sure that snow and ice do not fall from the roof of the house and hit the heat pump.

3. Check that snow does not build up around the heat pump.

4. There can be a lot of condensation water and melt water when defrosting. Make sure that a pile of ice does not form under the heat pump.

5. Make sure that condensation and melting water does not form an ice street in the garden that you risk slipping on.

Heating the house and hot water with a heat pump is attracting more and more Swedes.* The main reason for the increase in heat pumps is to reduce the operating costs of the house. Other reasons are that it is convenient and that it is good for the environment. Especially those who already have a wood boiler state that they want to change for reasons of convenience.

Switching to a heat pump can provide a saving of up to 80 percent compared to if you have waterborne electricity or an oil boiler. With us at ctc you can make a simple calculation and see how much you can save with a heat pump from CTC. 

*According to the Swedish Energy Agency, the number of single-family homes with heat pumps has increased by over 50 percent since 2009. Today, just over one million single-family homes have at least one heat pump. At the same time, the use of oil for heating has fallen by more than 80% in the last ten years.

It basically always works. A heat pump from CTC always comes with a function we call EnergyFlex, which means that the customer can connect different heat sources (solar heat, extra tanks, water-coated stove and wood, electric, pellet and gas boilers) to their heat pump.

There are some exceptions, but sometimes the Swedish Energy Agency's rules put a stop to this. If the old boiler is too bad, it should not be docked with a new system. If you have specific questions about your situation - contact your installer.

Compared to heating a pool with electric heating, using a heat pump saves you on average 65 to 80% of the heating costs. All you need is to connect a heat exchanger that transfers the heat from the pump to the pool. You also need a hydronic system for it to work.

It is usually estimated that a normally sized heat pump raises the temperature of the water by around two to three degrees per day. If you want to heat the pool with your existing heat pump or are planning to install a new heat pump, you can contact your nearest CTC dealer who will help with everything from sizing to installation.

As a rule, the CTC heat pump does not need to be serviced. It will let you know if something is not working optimally.

When you are going to invest in a new heat pump, there are some different factors that affect. For example, what heat source you have today and what your heating system looks like, where in the country you live, how big the house is, what the floor plan looks like and how much electricity consumption you have today.

You are welcome to contact us with any questions. We also recommend that you talk to an installer who can help with expert advice. It is primarily the installer you will have contact with in the future for any adjustments or new purchases that are linked to your heat pump.

CTC has a large number of ground source heat pumps with different list prices and suitable for different types of households. In total, there are 17 models and sizes.

One thing that affects the price a lot is what the installation costs. The cost of drilling the holes for the ground source heat pump differs between different municipalities. It depends, among other things, on the quality of the rock and whether one hole is enough or whether you have to drill two. Therefore, it is good to contact an installer to find out your specific conditions together. You can find your nearest installer here.

It is available in two models to suit everything from the average home to slightly larger properties. GSi 12 has an output range of 2.5 to 12 kW and GSi 16 has an output range of 4 to 16 kW.

Installing ground source heating takes place in several stages, starting with a notification to the municipality. Then a drilling company comes to you and makes a borehole between 100 and 200 meters deep on your land.

Hoses are inserted into the hole and connected to the outer wall of the house where the heat will enter. Some homeowners choose to do the work themselves, in which case this is agreed with the installer.

Then the garden is restored and the installer starts the work of running pipes between the heat pump and the outer wall where the drill hoses come in.

An electrician installs sensors and connects the heat pump to the villa's electrical center. After that, you get information on how to use your heat pump and together you fill in the warranty and insurance papers and register the product.