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Air-to-air heat pumps – what should I know?

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Air-to-air heat pumps – what should I know?

An air-source heat pump is an environmentally friendly solution for heating a house or apartment by using energy from the outside air and electricity. As a reversible device, it not only allows efficient heating, but can also operate in cooling mode, thus providing savings in operation and high comfort of use.

Why choose to install an air-to-air heat pump?

The decision to invest in an air-source heat pump comes with numerous benefits – both economic and functional.

The most important advantages of air heat pumps are:

·        provide both energy-efficient heating in winter and efficient air conditioning in summer.

·        are an ideal replacement for old heating systems, allowing you to obtain an efficient and economical source of heat in your home and apartment.

·        are distinguished by their high energy efficiency class: A++ in cooling mode and A++ in heating mode, which directly translates into lower heating costs.

·        compared to air-to-water and ground-to-water heat pumps, are cheaper and simpler to install, and do not require additional ground drilling and drainage installation.

·        KAISAI heat pumps are powered by 75% energy extracted from the air and only 25% electricity, making them an ecological and economical solution for both houses and apartments.

Perfect solution for space heating in low outdoor temperatures.

Thanks to advanced technological solutions, the efficiency of air-to-air heat pumps remains high even at very low outdoor temperatures. KAISAI’s available line of KAISAI HOT and KAISAI PRO HEAT units, dedicated especially to the function of heating, is adapted for efficient and energy-efficient operation in heating mode at outdoor temperatures as low as -25 ° C.

What are the costs of an air-to-air heat pump?

Heat pumps contribute greatly to a significant reduction in the cost of operating a home. Also, purchase and installation costs are lower than for other heating systems. When choosing a heat source for your house or apartment, it is worth bearing in mind that the air-to-air pump mostly uses the energy contained in the outside air, and the high energy class of the device allows you to further reduce the level of electricity consumption, which makes the investment in an air-to-air heat pump prove to be very attractive economically.

Feel free to learn more about KAISAI air-to-air heat pumps:

·        KAISAI HOT series

·        KAISAI PRO HEAT series

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WHAT KIND OF AIR CONDITIONING SHOULD BE INSTALLED, DEPENDING ON THE FACILITY?

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WHAT KIND OF AIR CONDITIONING SHOULD BE INSTALLED, DEPENDING ON THE FACILITY?

The wide range of the currently available air-conditioning systems makes it necessary to consider which devices will be suitable for particular facilities, before you actually purchase them. Different types of air conditioner will be suitable for cooling and heating the house, but completely different ones for an office building or a shopping mall.

In apartments, people usually opt for the split-type stationary air conditioner with an indoor unit mounted on the wall. This model is easy to use, quiet, and its installation does not involve significant interference in the room’s structure. In terms of purchase costs, it is also favourable compared to other types of equipment. For more-demanding and aesthetically pleasing interiors, it is possible to use cassette or duct air conditioners, embedded in a suspended ceiling.

If we do not want to or cannot install stationary units, your only choice is portable air conditioners.

On the other hand, central VRF air-conditioning systems, consisting of one unit and up to several-dozen indoor units, are more frequently used in offices or retail and public-utility facilities. The units are usually placed on the roof of a building, while the cooling systems and the indoor units are installed inside the rooms. They are predominantly cassette, duct, or ceiling units, mounted inside or directly below suspended ceilings.

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SELECTING THE CORRECT TYPE OF AIR CONDITIONING

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SELECTING THE CORRECT TYPE OF AIR CONDITIONING

Selecting the correct type and performance characteristics of an air conditioner is a prerequisite for its successful operation. The process of selecting the air conditioner based on the type of facility has been discussed separately. However, it is best to entrust the selection of equipment, in terms of its performance, to specialists with the appropriate knowledge and experience in this field.

However, there are a number of general recommendations and indicators which allow users to pre-define the required power of the device themselves. The most-important parameter is the cubic capacity of the air-conditioned room. It is considered that the required cooling capacity in standard rooms with a height of about 3m is approximately 40 W/m3.

However, there are exceptions to this assumption. This value can change if, for example, there is a particularly large area of windows in the room, which also face south or west, the walls of the room have poor thermal insulation, or there is a roof directly above the air-conditioned room. The number of people present in the air-conditioned room is also important, and whether there is any equipment generating additional heat, e.g. computers, monitors or refrigerators.

It is worth remembering that the factor increasing the required cooling capacity of an air conditioner is the presence of mechanical ventilation in the room, which should be taken into account when selecting the appropriate air conditioning system.

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THE OPERATING PRINCIPLES OF SPLIT-TYPE AIR CONDITIONING SYSTEMS

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THE OPERATING PRINCIPLES OF SPLIT-TYPE AIR CONDITIONING SYSTEMS

Each split-type air conditioner is comprised of two components – an outdoor unit and an indoor unit, the latter of which, depending on the applied method of installation, can be wall-mounted, floor-standing, duct (installed inside the suspended ceiling space and connected to the ductwork), cassette (installed in rooms with a suspended ceiling), or convertible (a general-purpose unit for installing both on the floor and under the ceiling).

The operating principle of this type of air conditioner is based on the physical properties of the refrigerant, which – in the case of KAISAI air-conditioning systems – is the eco-friendly R32 refrigerant. This agent can condense or evaporate inside the indoor unit, depending on the air conditioner’s operating mode. In the cooling mode, the refrigerant evaporates inside the indoor unit and absorbs heat from the surroundings, which is then transferred to the outdoor unit and there extracted outside by condensation. When the unit is switched on in the cooling mode, pleasantly cool air is supplied from the indoor unit, and hot air is blown out from the outdoor unit, through the processes occurring inside the air conditioner. Additionally, any moisture contained in the air condenses on the cold heat exchanger, and it must be drained into the sewage system.

In the heating mode, both the indoor and outdoor units swap roles. This time, the air supplied from the indoor unit is warm, and can effectively heat up an office or an apartment, for example.

It should be remembered that the temperature of the outside air is the limiting parameter for the effective space heating. Since the performance of the unit usually drops significantly when below -15°C, it should not be used at such low temperatures.

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THE CORRECT INSTALLATION OF AN AIR-CONDITIONING SYSTEM

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THE CORRECT INSTALLATION OF AN AIR-CONDITIONING SYSTEM

Air-conditioning units must be installed by a qualified installation team. Contractors should have personal refrigeration certificates (F-Gas certificates) and electrical certificates. Portable air conditioners are the only type of equipment the user may install personally. However, the instructions provided in the accompanying instructions manual must be followed during installation.

The installation of other types of air conditioner requires the use of specialist tools, such as a vacuum pump, pressure gauges, refrigerant bottles, an electric meter, a flare tool, and also professional equipment for drilling holes. The cooling connections between the units are comprised of copper pipes, which are protected by thermal insulation with the correct thickness. It should be remembered that water condenses inside the indoor unit during cooling, and it must be drained into the sewage system, or directed outside the room. The best method of extraction is by gravitation, i.e. the pipes for draining condensate must be inclined. Sometimes, this is technically impossible, however, which necessitates using an additional condensate-extraction pump. The outdoor unit of an air conditioner is usually placed on the balcony or the façade, or on the roof of a building. During installation, be sure to provide service access and maintain the appropriate distances from the walls and barriers specified in the installation instructions. 

Remember to carry out periodic technical inspections of the installed air conditioners (preferably twice a year). Moreover, some units should be registered on a special database, i.e. the Central Register of Operators, in which mandatory inspections are also recorded, depending on the amount of refrigerant. Information on the equipment required for registering on this database should be provided by qualified technicians installing air-conditioning units.

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USING INVERTER CONDENSING UNITS

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USING INVERTER CONDENSING UNITS

Inverter condensing units are used as sources of cooling or heating for heat exchangers installed in air-handling units. The automation systems supplied with the units allow smooth control of the unit’s performance.

It is necessary to transmit a current signal in the range of 0-10V, which is usually related to the air temperature inside the air-handling unit for return or supply air, in order to ensure the adjustment of the cooling capacity. Unlike the older on-off technology, the inverter compressors applied in air-handling units maintain a stable supply-air temperature and ensure energy efficiency.

The condensing units from KAISAI are characterised by quiet and efficient operation in the cooling capacity’s range of 5-16KW.

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ENERGY LABELS – THE CLASSIFICATION OF ENERGY EFFICIENCY

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ENERGY LABELS – THE CLASSIFICATION OF ENERGY EFFICIENCY

Energy labels are affixed to every electrical appliance for domestic use sold within the territory of the European Union. This is regulated by a special EU directive. That directive also covers air conditioners below 12kW. Labels inform the user about the quality of the product, predominantly taking into account its energy efficiency. Thanks to the label, everyone can compare which device will have the lowest cost in use, before purchase. The assessment of energy efficiency, also referred to as the energy class, is indicated by letters. In the case of air conditioners, a scale from G (the lowest) to A +++ (the highest) is used.

When assessing savings in energy consumption for air conditioners, the following energy efficiency factors are also taken into account: SEER for cooling and SCOP for heating.

These factors determine the ratio between the cooling/heating capacity achieved by the air conditioner and the electrical power drawn by the unit from the mains, throughout the heating and cooling season, e,g. units with SEER=8, which corresponds to class A++, are capable of generating an average of 8kW of cooling energy from 1kW of electricity per season.

The inverter air conditioners from KAISAI feature the best energy class (A), while some of them even reach the maximum level A+++.

The biggest campaign in the history of the KAISAI brand is launched

The biggest campaign in the history of the KAISAI brand is launched

At a 100-square-meter booth located in Hall 4A of the modern NürnbergMesse complex, the Klima-Therm Group presented the latest air conditioning, ventilation and heating solutions from its own brands KAISAI and Klimor.

Klima-Therm has launched the biggest campaign in its history to promote KAISAI air conditioners and heat pumps. The nationwide campaign, aimed at a mass audience, combines traditional media - radio and outdoor - with a broad presence on the Internet and in social media. Intensive advertising activities have been planned until the end of 2022.

The main objective of the latest KAISAI campaign is to build brand awareness among end customers - potential users of air conditioners and heat pumps - and to redirect interest in the products to points of sale.

In March, the KAISAI commercial can be heard on the radio - ultimately on the airwaves of as many as seven radio stations of the RMF Group, Eurozet and Polskie Radio. The intensity of the radio campaign will be measured by several thousand emissions of sponsorship spots accompanying the most popular programmes, broadcast at peak listening times, which will translate into reaching as many as 13 million viewers from the so-called commercial target group with the brand's message.

In April, the Internet will be included in the media plan, with significant participation of the Wyborcza.pl portal and Polskapresse group websites, comprising several dozens of information and announcement services - both national and local. The KAISAI brand will also be a partner of "Onet Rano" - a live broadcast of Onet.pl. KAISAI sponsorship billboards will appear in several dozen episodes of the videocast, generating a total of over 200 million views. KAISAI brand activity on the Internet will also include a Google AdWords sponsored links campaign in the form of sets of graphic and test ads, and remarketing. All online activities will be complemented by communication in social media such as Facebook, LinkedIn and YouTube.

The third pillar of the biggest campaign in the history of the KAISAI brand will be the outdoors, which Klima-Therm will use in its marketing communication for the first time on such a large scale. Advertising of KAISAI air conditioners will be exposed in June and July on dozens of 12x4m boards. For the campaign, KAISAI's prestigious advertising panels have been selected on the main thoroughfares connecting Poland's biggest cities, including those located on key routes in the context of increased weekend and holiday traffic. According to estimates, KAISAI's outdoor advertising will generate over 20 million potential contacts.

- "The campaign has a typical consumer character. It is aimed at building awareness and image of the KAISAI brand in close connection with the product category," says Ewa Pilarska, Marketing and PR Director at Klima-Therm Group, and adds: - This is the biggest advertising project of this kind that we have carried out so far. Its core is radio - a medium in which we have been present regularly since May 2020, as the largest advertiser in the HVACR industry. We have also been running an online and social media campaign for several years. This time we decided to strengthen communication by intensifying advertising spending and adding new channels and formats. The biggest novelty of this year's activities is outdoor, which is supposed to strengthen the visual message of the brand and increase its memorability. I am confident that a campaign planned in this way will not only be noticeable, but most importantly will translate into increased interest in our equipment and support sales.”

The campaign of KAISAI air conditioners and heat pumps - an own brand in Klima-Therm's portfolio - started on March 14 with the emission of the first sponsored radio spots on Radio ZET and Antyradio, and will be carried out continuously for more than nine months, until the end of 2022.   

New KAISAI Website

New KAISAI Website

At a 100-square-meter booth located in Hall 4A of the modern NürnbergMesse complex, the Klima-Therm Group presented the latest air conditioning, ventilation and heating solutions from its own brands KAISAI and Klimor.

We are pleased to present to you a new website for the KAISAI brand. The site has a new graphic design, emphasizing the global nature of the brand and several solutions aimed at intuitive operation, thus increasing user comfort.

The website has been optimized in terms of speed, and thanks to RWD (responsive web design) technology, it displays well both on large screens and mobile devices.

A new search engine with segmented results has been implemented, as well as intuitive filters in the "Where to buy" tab, which allows to find sales, service and installation points efficiently and quickly.

New solutions were applied for the presentation of the systematically expanded range of devices.  On the one hand, these are numerous arrangement pictures, showing the devices in their natural environment, on the other hand - the introduced option of 360° view, reducing the distance between the real and online experience of the presented devices.

The website has been developed in eight languages to meet the next challenges in the development of KAISAI brand international business.

We wish you a pleasant use!

A SUNNY TRIP TO CRETE WITH KAISAI

A SUNNY TRIP TO CRETE WITH KAISAI

At a 100-square-meter booth located in Hall 4A of the modern NürnbergMesse complex, the Klima-Therm Group presented the latest air conditioning, ventilation and heating solutions from its own brands KAISAI and Klimor.

In October, the Klima-Therm Group invited several dozen KAISAI brand business partners on a joint week-long trip to the largest Greek island – Crete. The all-inclusive trip was a reward for the highest air conditioner sales in 2020-2021.

During the trip, participants discovered the charms of East Crete, famous for its extraordinary views of the beautiful Mirabello Bay, the sunken ancient port of Olous and the enchanting town of Agios Nikolaos with its picturesque port and Lake Voulismeni. Highlights included a cruise to the islet of Spinalonga and a tour of the impressive fortress built by the Byzantines. The beautiful sandy beaches, lively resorts and charming corners of the island provided exceptionally favourable conditions for blissful relaxation.

“We would like to thank our partners for their contribution to the development of the KAISAI brand, as well as for the time spent together during the trip and the opportunity to share the experience of exploring new and interesting places,” summarises Arkadiusz Oracki, Deputy Head of KAISAI Commercial Department, and adds “Just like our previous trips, this year’s trip also turned out to be a unique opportunity to build relationships in an attractive setting and beautiful scenery. We hope that the next events we will plan will also meet the expectations of the participants, provide a lot of positive impressions and remain in our memories for a long time.”

The trip to Crete took place between 3 and 10 October and the participants included several dozen representatives from almost 20 awarded companies in Poland. In previous years, the Klima-Therm Group invited business partners working with the KAISAI brand on joint trips to Prague, Scandinavia and China.