Master Therm has been a regular participant at the ISH trade fair — an event focused on energy-efficient heating, air conditioning technologies, bathroom equipment, and smart home systems — since 2009. This year was no exception, and from March 17–21, the company once again exhibited in Frankfurt am Main.

It presented the new AquaMaster 45 Inverter P heat pump, expanding its latest line of modern, eco-friendly heat pumps using R290 (propane) refrigerant. It’s a ground-to-water type with a heating capacity of 35 kW. The showcased model featured a unique ventilation casing, ensuring safe propane exhaust in case of a leak. Visitors had the opportunity to take part in a live demonstration of the system in action.

Our complete AquaMaster propane heat pump lineup, ranging from AquaMaster 17 IP to 90 IP, now covers a capacity range from 1 to 70 kW.

Key Benefits of the AquaMaster Series

• Cascade connectivity: Total heating output exceeding 1100 kW for large buildings and industrial facilities
• Full serviceability: All internal components are replaceable, reducing operating costs and enabling easy maintenance
• Optional passive cooling: Passive cooling function available as an option
• Online control and monitoring: Internet connectivity for remote access (monitoring and data logging), Modbus/BMS, integrated MID-certified electricity meter or heat meter, communication with photovoltaic inverters, batteries, and smart grid systems
• High-temperature output: Hot water temperature up to 75 °C
• Legionella protection: Automatic protection system without the need for an auxiliary electric heater

We also presented the BoxAir 26 Inverter P heat pump — a popular air-to-water model widely used in family home installations.

The fair was also a wonderful opportunity to meet with our sales representatives from the United Kingdom, Ireland, the Netherlands, Belgium, Italy, Poland, Norway, and other countries. We also established new partnerships, especially with visitors interested in our ground-to-water heat pump solutions with capacities of 35 kW and higher.

This year's ISH welcomed 2,183 exhibitors and 163,157 visitors. The next edition will take place from March 15 to 19, 2027.