HOW DOES A HEAT PUMP WATER HEATER HEAT WATER AND COOL ROOMS AT THE SAME TIME? 

The operating principle is simple yet highly efficient: 

1. Warm air intake: The heat pump draws in warm, humid air from a room (e.g. basement, laundry room, or storage area). 
2. Heat transfer: It extracts the heat from this air and transfers it into the domestic hot water tank. 
3. Cool air return: The system releases cooled, dehumidified, and comfortable air back into the room. 

Instead of needing two separate devices (a boiler and an air conditioner), you get one system that does both—at just a fraction of the usual cost. Cooling is completely free, since it’s a by-product of water heating, which the pump would be running for anyway. 

• No extra energy consumption for cooling: Conventional air conditioners run separately and consume additional electricity just for cooling. With KRONOTERM domestic hot water heat pumps, cooling is integrated into the process. 

• No more summer boiler firing: Forget about oil or gas boilers that must be switched on during hot summer months only to provide hot water. With a heat pump water heater, there’s no combustion, no emissions, and no unnecessary heat generation—just smart energy use. 

• Sustainability and savings: The system runs on renewable air energy, meaning lower heating and cooling costs and a reduced environmental footprint. 

This system is especially effective in areas where heat and humidity accumulate, and where cooling significantly improves comfort: 

• Basements & storage rooms: Eliminate dampness and musty odors. 

• Laundry rooms & drying rooms: Keep the air cool and dry while washing and tumble-drying. 

• Garages: Maintain an optimal temperature in your workshop or storage area. 

• Technical rooms: Cool spaces with boilers, motors, or other heat-emitting equipment. 

Additionally, the system produces condensate water, similar to distilled water. Instead of draining it away, you can reuse it for watering plants, in irons, or for cleaning—further reducing potable water consumption and increasing sustainability. 

KRONO-FLEX is a unique extension that takes your KRONOTERM heat pump water heater to the next level. It allows you to decide where the heat pump draws air from and where it releases cooled air, maximizing free cooling and adapting it to your needs. 

Two installation options for maximum efficiency 

• Room installation: The heat pump takes air in and returns it to the same room. Perfect for basements or storage spaces where heat and moisture accumulate. The result: efficient dehumidification and pleasantly cooled air. 
• Ducted installation: The pump draws air from one room (e.g. the laundry room) and, through ducts, directs the cooled air into another space (e.g. a basement for food storage). 

Unlike standard heat pumps that only cool the room where they are located, KRONOTERM systems with KRONO-FLEX enable targeted and efficient cooling. You can place the unit where it’s least intrusive, and direct the cooled air exactly where you need it. 

Find the right solution for your home – get in touch with our experts today.