Smart heat meters

Shape the future of thermal energy

Making homes and buildings energy efficient requires the ability to measure heating/cooling consumption, with accuracy. As pioneers of ultrasonic measurements, Landis+Gyr brings precision insights on thermal energy measurements through its portfolio of ultrasonic meters for residential, district heating/cooling and sub-metering applications.

District heat and cold measurement


T450 – the universal thermal energy meter. Applicable in building services and district heating – precise, reliable, flexible and with a high degree of economic efficiency, the ULTRAHEAT®T450 is a compact and flexible ultrasonic meter suitable for the most demanding of application and operating conditions. Robustness, easy installation, on-site configurations, retrofitting of communication modules, sensors or power supply – are few of the features that distinguish the T450. The new electronic design enables power supply via M-Bus and thereby an almost unlimited service life. The unique calibration logbook makes it possible to change the installation location, sensor type and energy unit at any time.

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The smart ULTRAHEAT®T330 combines the proven technologies of ULTRAHEAT meters and thus covers a wider range of individual consumption metering in apartments, local heating or building technologies. The extremely compact design of the T330, as well as the rotatable and detachable calculator simplify the installation of the meter and facilitate reading. The T330 has a full-metal measuring unit without moving parts in the measuring channel and is equipped with the special internal profile DuraSurface™. This makes it insensitive to soiling and ensures failure-free operation with constant measuring accuracy over many years.

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The smart ULTRAHEAT®T230 is a next generation ultrasonic heat or cooling meter especially developed and optimized to meet all residential needs. Lightweight, robust and good economic efficiency and user-friendliness, the T230 has significantly lower pressure losses, which simplify the dimensioning of the meter and economize expensive operating current year by year. With the huge dynamic range of 1:1000 all flow rates can precisely be measured, even the smallest. The hard-coded starting value amounts only a few liters per hour and wouldn´t be affected by soiling or abrasion. The T230 works with the proven ultrasonic measurement technology of Landis+Gyr giving the highest accuracy, no maintenance and stable measurement for many years.

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The Landis+Gyr ULTRAHEAT®T550 (UH50…) heat, cooling or combined heat/cooling meter has been designed specifically for the varied applications of heat and cold measurement: It meets the special requirements of district heating and cooling, local heat and building installation. Whether for a detached house, apartment building or special tariff customer – the dimension and the specific scope of the T550 are always right. Modularity and flexibility of individual software settings permit ideal adaption to your requirements and applications.

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Heating and cooling meter software

UltraAssist Software

UltraAssist is a parameterization service and read out software for the heat & cooling and flow meters: 2WR5, T150, T230, T330, T350, T450 and T550. 

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UltraAssist App

The Landis+Gyr UltraAssist App allows you to use your Android phone or tablet for meter readings, data transfer or parameterization of communication options, instead of a laptop/PC. The simple and intuitive user interface guides you through the individual options. Meters can be put into operation with little effort, data can be read out and sent by e-mail.

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Web configurator

The Landis+Gyr Web-Configurator allows you an easy and fast configuration of heat meters or cooling meters. The web configurator helps you select the right meter for your needs and simplifies ordering. The intelligence and product-based rules of the configurator only allow configurations that are technically possible. This eliminates ambiguities and queries. You can configurate your individual thermal energy meter 24 hours a day.

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WZU-485 Configuration Tool

The Landis+Gyr WZU-485 Configuration Tool is used to configure the WZU-485E communication modules for Modbus and BACnet.

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