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Questions and answers

Welcome to the information center for air conditioning solutions, where you will find clear answers to your questions. Our comprehensive FAQ section provides in-depth information when it comes to environmentally friendly heating and cooling systems. You can find answers to frequently asked questions relating to topics ranging from how air conditioning systems and heat pumps for the home and business sector work to tips on improving energy efficiency and sustainability in day-to-day life.

Heat pump – questions and answers

Does the heat pump also work in sub-zero temperatures?

Although the efficiency of the system decreases at very low outside temperatures, heat pumps are still able to generate heat even at outside temperatures of -25°C.

How does a heat pump work?

The heat pump uses the refrigerant to extract energy from the outside air and transfer it to a higher temperature that can be used for your heating.

Why is an air-water heat pump the best investment for the future?

An air-water heat pump combines the advantages of low acquisition costs with the lowest operating costs and thus efficiently uses renewable energy.

What can an air-water heat pump be used for?

A heat pump can be used in a variety of ways for heating and cooling, or for hot water preparation in new buildings or renovations with radiators, underfloor heating, wall heating, and for supporting pool heating.

Is a TOSHIBA heat pump eligible for funding?

TOSHIBA heat pumps have all the necessary certificates and requirements to be eligible for subsidies. However, subsidies depend on the state, city, and local electricity provider. A list of possible subsidies can be found at www.waermepumpe-austria.at/foerderungen.

How much does it cost to operate a heat pump?

These depend on various factors such as local conditions, the building's insulation, and personal heating needs. In general, however, heating costs for new buildings powered by air-water heat pumps can be significantly lower than €50 per month.

How loud can a heat pump be?

To ensure peaceful coexistence with neighbors and the community, a noise level of 30 dB(A) should be maintained at the property boundary. This means your TOSHIBA heat pump can be installed as little as 6 meters away from the neighboring property.

What does JAZ stand for?

The JahresArbeitsZahl (annual performance factor) represents the efficiency of heating systems operated with heat pumps. It reflects the relationship between the energy supplied (electricity) and the heat actually generated over a period of one year and serves as a key indicator for economic efficiency calculations.

What is the life expectancy of a heat pump?

An LW heat pump has the same service life as other conventional heating systems, which is ensured by regular maintenance and guaranteed 15-year spare parts availability.

How much space do you need for a heat pump?

The transfer station takes up a space of (HxWxD) 93x53x36cm, so the heat pump can be used even in the smallest rooms.

What is electric auxiliary heating needed for?

The certified heat pump partner will design the TOSHIBA heat pump for your building so that the electric auxiliary heating is only necessary to support heating at the lowest outside temperatures.

Is it possible to combine a heat pump with a solar system or photovoltaics?

Integrating solar energy in combination with your heat pump is possible and can contribute to increased efficiency.

Can I cool with a heat pump?

In winter, you heat with your underfloor heating, and in summer, you can use it to regulate the temperature in your room. Active cooling is possible with fan coil units.

How efficient is the heat pump in summer when I only need hot water?

Since heat pumps work even more efficiently at higher outside temperatures, they can perfectly and cost-effectively produce hot water temperatures of up to 55°C at outside temperatures of up to 35°C.

Up to what flow temperature does it make sense to operate a heat pump?

The lower the flow temperature, the more energy-efficient the heat pump is. Flow temperatures of up to 60°C are possible, but for radiators, 50°C is usually sufficient if they are operated continuously.

How do you determine the correct power size of a heat pump?

The correct design determines the efficiency of the heat pump, which in our systems is carried out using the performance table in order to be able to guarantee the necessary heating output of your building down to the standard outside temperature without the aid of auxiliary heating.

What can I control with the heat pump?

The heat pump has an intelligent control logic that independently regulates the heating temperature of the radiators, the underfloor heating and the hot water depending on the outside temperature.

How easy is commissioning?

Thanks to pre-defined installation diagrams and associated commissioning parameters, commissioning is a stress-free and quick process for the specialist. With the step-by-step instructions in the appendix/manual or app, every parameter can be adapted to individual needs.

What do I need to connect the heat pump to a building management system?

External control or integration into a building management system via KNX or MODBus is possible using additional boards.

Who should I contact if I have questions?

Should a malfunction or problem occur with your system, the certified heat pump installer will be available to provide you with advice and assistance.

What does nominal power mean?

Nominal power is the device power at a given operating point.

What does heating limit temperature mean?

The daily average temperature at which a building must be heated. Days on which the daily average temperature is below the heating limit temperature are considered heating days.

What does standard outside temperature mean?

The average lowest expected outside temperature for which your heating is designed.

What is COP?

COP stands for Coefficient Of Performance and indicates the ratio between electrical energy consumed and heat energy received at a specific operating point.

ErP directive

Why does air conditioning technology fall under the ErP Directive?

Air conditioning systems have long since become established in the home. More and more homeowners and apartment owners are relying on the comfort of pleasant coolness.

Thanks to innovative technologies, many of the air conditioning units on offer, such as those from TOSHIBA, are highly efficient. The new ErP directive makes it even easier to differentiate between room air conditioning units based on their cost-effectiveness.

Providers of inefficient units will lose market access.

What energy classes are there?

Since January 2013, the energy efficiency class A scale has been expanded to include classes A+, A++, and A+++.
In addition, noise emissions (sound power levels of the indoor and outdoor units) were also taken into account in the classification.

What does the new energy efficiency label look like?

What do the new SEER and SCOP metrics mean?

Previously, only the EER (Efficiency Rating in Cooling Mode) and the COP (Efficiency Rating in Heating Mode) were specified. These values ​​were based exclusively on a single point.

The new SEER and SCOP indicators define multiple measurement points, all of which are included in the classification. The "S" stands for "Seasonal."

Measurement points in the cooling range:

These are at 20°C, 25°C, 30°C, and 35°C outside temperatures. For cooling mode, the climate data from Strasbourg was used as a representative for the whole of Europe.
The measurement points were weighted differently according to the temperature trends.

Measurement points in the heating range:

No uniform temperature profile was created for heating mode across Europe. Instead, a division into three climate zones followed: Northern, Central, and Southern Europe with different load profiles.
The measurement points are uniformly at 12°C, 7°C, 2°C, and -7°C outside temperatures.

Why three climate zones for evaluating heating efficiency?

Climatic conditions have a significant impact on the performance of air conditioning systems in heat pump mode. Therefore, three zones have been defined within the EU:

Blue: Northern Europe: cold

Green: Central Europe: medium

Orange: Southern Europe: warm

 

Since when does the new ErP Directive apply?

The ErP Directive for room air conditioners (Lot 10) came into force on 1 January 2013 and applies in all EU countries without national transition periods.