The background is coloured in dark blue and on the right side is the heat-meter from ista depicted.

Wireless heat metering solutions by ista.

Effortlessly track your heat consumption with our advanced heat meters, which provide both accurate data and convenient wireless monitoring.

Integrated wireless interface for remote readings

Automatic data transmission on fixed dates

Automatic malfunction detection

Compact design

Extra-long-lasting battery

Thanks to their built-in radio interfaces, our third-generation heating and cooling meters integrate seamlessly with MBUS, LoRaWan and ista Radio systems, saving your tenants the inconvenience of in-person meter reads.

This means you can manage your properties conveniently online, safe in the knowledge that you can rely on immediate and accurate readings for transparent, easy-to-understand heating bills.

The Future of Heat Metering.

Equipped with the latest electronic measurement technology, our heat meters offer precise, real-time readings, so that you get a transparent, easy-to-understand heating bill. With their flexible design, these meters can be easily integrated and replaced within existing systems.

ultego® III heat meter offers a sophisticated, versatile solution for commercial heating systems, combining a calculator, flow sensor and temperature sensors in one compact device. It provides precise and reliable measurements, ensuring accuracy even for the lowest flow rates. Its design ensures stable long-term performance with minimal wear and tear, making it highly reliable.

Record even the lowest energy consumption

Thanks to ultra-fast response times.

Compliant with all Energy-Efficiency Directive (EED) requirements

Meeting all requirements for measurement and distribution technology.

Seamless replacement

Thanks to the istameter® principle and easy integration into your current smart building systems.

The picture shows a modern office building on a sunny day. The building is in the centre of the picture and takes up most of the frame. It has a glass and metal façade that reflects the daylight. The structure of the building consists of several rectangular glass windows separated by vertical and horizontal metal struts. The metal struts are in different colours, giving the façade a lively and modern look. In the foreground, at the bottom right of the picture, you can see a tree whose green leaves are brightly illuminated by the sunlight. The leaves partially cover the bottom right corner of the building. The sky is clear and blue with only a few small clouds in the top left of the picture. The sun's rays create lens effects that can be seen as bright, circular reflections in the picture. In the upper left area of the picture, at the edge of the building, a few plants can be seen on a roof garden, bringing a touch of nature into the otherwise urban picture.

Experience unmatched efficiency and accuracy with ista's submetering service.

Get started now and drive sustainability in your commercial properties.

Discover more

How does it work

Our heat metering system operates using advanced ultrasonic technology to provide precise measurements of heat consumption. These devices feature integrated wireless interfaces that allow for remote data transmission and reading, eliminating the need for in-person meter checks. Data is automatically transmitted on predetermined dates, ensuring timely and accurate heat consumption records. The compact, durable design includes an extra-long-lasting battery, making it ideal for sustained, maintenance-free operation. These meters seamlessly integrate into existing smart building infrastructures, facilitating effortless energy management and compliance with European measurement directives.

Technical features

Ultrasonic technology for high precision
Autonomous operation with a 10-year battery life
Stores the last 24 months of data
Capable of measuring low consumption rates
Remote reading capability allows for convenient data access