Centralise your billing

A specialized solution for billing water heating.

We offer a comprehensive service for settling the costs of domestic hot water and central heating within a single, transparent system.

Your benefits at a glance:

Compliance with regulations

Accurate and transparent billing

Energy savings and cost reduction

Acting responsibly towards yourself and the planet

No more on-site visits thanks to remote measurement

Integrated heat energy billing – convenience, transparency, savings.

Thanks to the ista billing system, all data relating to heat consumption is presented on a single, transparent bill. Residents have full insight into their consumption and can easily control their costs.

In accordance with applicable regulations, in multi-unit buildings, there is an obligation to settle water heating costs together with central heating costs, as both heat sources are usually supplied from a single metering system. This is due to the provisions of the Energy Law and the Regulation of the Minister of Climate and Environment of December 7, 2021, which impose an obligation to settle heat costs individually based on actual consumption.

Find out how to switch to water heating billing with ista.

Take control of your water heating bills with our simple solution.

Discover the advantages of joint heat energy billing (central heating + water heating).

Facts & figures

6,300 employees

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20 countries

3.7 mil. t CO₂ emissions avoided

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43 mil. radio devices

14 mil. utilisation units

Frequently asked questions

Discover more innovative solutions that will transform your property.

Our customized solutions are designed to help our customers reduce their environmental impact, improve health and safety in their buildings, and lower energy costs.

Heat cost allocation

Consumption-based billing with ista optimises and automates the process of heating cost billing and provides residents with an accurate and easy to understand billing.

Heating optimisation

Optimise heating systems for enhanced efficiency and savings.

The image depicts a man sitting at a round table in a well-lit office space. There is a glass of water and a small espresso cup on the table, adding to the professional yet comfortable atmosphere. The man is smiling and engaged with the water consumption billing from ista on his laptop, taking notes in a notebook. He is wearing a blue button-down shirt and glasses. The background features a flip chart, potted plants, modern furniture, and large windows allowing natural light to flood the room.

Water consumption billing

We offer a range of services including water submetering, billing, and data analysis, which can help you to optimise water usage and reduce costs for your property.