Natural refrigerants are increasingly used in heat pumps because they do not deplete the ozone layer and they are not greenhouse gases (F-gases). This is in contrast to their counterparts, the synthetic refrigerants. In addition to CO2, propane (R-290 with a GWP of only three) is also booming. It is used in these five heat pumps.
Wolf CHA
This air-to-water heat pump for heating and cooling has an output of 7, 10, or 16/20 kW. The monoblock immediately stands out with its modern and stylish design that graces the home. Without the help of an electric element, a supply temperature of 70 °C is possible. By the way, there is an integrated heating element of 9 kW to bridge prolonged cold periods. In the 16/20 kW version, this can be omitted if necessary.
A fan with slowly rotating paddle-shaped blades (owl wing design) and several other design details should ensure quiet operation. The Wolf CHA monoblock can be combined with a Wolf CHC heat pump center. This exists in two variants and includes an integrated buffer tank.
Look here for more information about the Wolf CHA
Weheat Blackbird
The Blackbird from the Dutch company Weheat immediately stands out because of its unique horizontal design. This allows this monoblock to be installed unobtrusively on flat roofs and other flat surfaces. It requires about two square meters and that includes thirty centimeters of free space around the heat pump.
The air blown upwards, the protective grille and a special hood prevent, for example, leaves from entering the unit. The specially designed housing also contributes to noise reduction.
The capacity of the heat pump is 8 kW and, for now, this is the only type of heat pump designed, developed and manufactured by Weheat. Installation is left to licensed installers. The maximum supply temperature is 70 °C and the heat pump operates down to an outside temperature of -10 °C. The hybrid variant can be transformed into an all-electric version via a software update, the installation of additional pipes and the installation of a boiler tank.
Look here for more information about the Weheat blackbird
Viessman Vitocal
Up to an outdoor temperature of -10 °C, this monoblock delivers a supply temperature of 70 °C. Again, this outdoor unit looks stylish and requires just over half a square meter of installation space. The fan is acoustically optimized and also uses speed control for the lowest possible noise level (35 dB, measured at a distance of four meters).
The Vitocal 250-A with an output of 2.6 to 13.4 kW is specially designed for renovation projects, as existing (HT) radiators can continue to be used. In addition to heating, this unit can also cool. Mounting can be done on a simple base (metal frame), but there is also a design base available in the same style. This design base seamlessly connects to the outdoor unit, making it optically one unit.
The Vitocal 252-A has about the same power output and specifications. This time, the indoor unit has an integrated 190-liter hot water heater.
See here for more information about the Viessman Vitocal 250-A and 252-A
Nibe S2125
A modulating air/water heat pump available in capacities of about 8 and 12 kW and which can be combined with different indoor units and separate control units from Nibe. This monoblock can be installed both all-electric and hybrid (all-electric ready) and can both heat and cool. A variant is available for 230 volts and 400 volts. The maximum power (the last few kW) is achievable through the use of an electric element.
The maximum supply temperature for heating water and tap water is 75 °C at an outside temperature of 15 °C and higher. Below that, a still nice 70 °C is achieved down to -7 °C. There is a silent mode to allow the heat pump to produce as little noise as possible. As a result, the outdoor unit can potentially be placed as close as two meters (model S2125-8) or three meters (model S2125-12) from the property line.
Look here for more information about the Nibe S2125
Acond Pro
The Acond Pro monoblock with infinitely variable scroll compressor capable of heating and cooling is available in two variants. The Pro R is primarily intended for larger homes and has an output of 3.5 to 18 kW. While the Pro N with an output of 1.5 to 9 kW is specifically intended for smaller homes.
Conveniently, two heating lines can be used, such as low-temperature heating on one floor and high-temperature radiators on another floor.
Up to an outside temperature of -15 °C, both the Pro R and Pro N deliver a water temperature of 70 °C for both heating and domestic hot water. At an outside temperature of -22 °C, this is still a very tidy 65 °C. The noise level at full power is only 32 dB at three meters away, compared to 49 dB at one meter.
Look here for more information about the Acond Pro. Eco2All is the importer
