The picture shows a woman sitting on a couch and reading the ista heating bill. She has long blonde hair and is wearing black glasses. Her top is a blue shirt and she is wearing brown trousers. While she holds the heating bill in her left hand, her right hand rests on her chin. She looks directly into the camera. The beige couch on which she is sitting stretches across the entire lower third of the picture and has a white blanket draped over the back on the left with a yellow cushion leaning against it. In the background are various pieces of furniture that suggest a living room: A floor lamp and a shelf can be seen on the right, and in the centre an open two-part door leading into another room with bookshelves. The entire background is blurred.
Smart heat cost allocation

One and done. We make heat billing simple, accurate and transparent.

Say goodbye to complex calculations and on-site visits. Our smart, all-in-one solutions take care of everything.

Get in touch with us

Why choose smart heat cost allocation?

Be compliant with regulations

Be energy efficient & cut costs

Be eco friendly & reduce CO₂ footprint

Accurate & transparent individual billing

No more on-site visits with remote metering

Your one-stop solution for heat billing.

Allocating heating costs doesn't have to be complicated. At least not anymore. Our intelligent heat allocation system provides accurate billing, ensuring fairness and compliance, while reducing disagreements and administrative workload.

We understand that accurate heat allocation is essential for all parties involved. By making tedious manual processes and on-site visits a thing of the past, our automated system allows landlords to simplify their operations, while residents benefit from clear, fair bills that reflect their actual consumption.

Another factor that has added complexity to consumption-based and transparent heating cost billing in recent years is its growing legal requirement in many countries. One key regulation is Article 9c of the amended Energy Efficiency Directive (EED) 2012/27/EU, which mandates that newly installed meters and heating cost distributors must be remotely readable and sets deadlines for the retrofit of existing meters. At the national level, these regulations must be implemented into national law. Similar policies for heat billing are also being adopted in many countries outside the EU.

Simply put: With us, heating cost billing is done in minutes. Easy to understand for anyone. And encourages energy-saving habits.

We make compliant heat cost allocation transparent and easy. For everyone.

Residents

Gain control over your energy costs with real-time insights.

Property managers

Save time and increase operational efficiency for your properties with automated billing.

Faster & fairer. Upgrade to smarter heat billing with ista.

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Ok, but how does it really work?

Heat cost allocation might seem complicated, but it's actually a well-structured and efficient process designed to ensure fairness for everyone.

New climate change legislation and energy regulations have made the process more complex and time-consuming for landlords, while residents continue to expect accurate and easy-to-understand bills.

Whether you’re a property owner, manager, or resident, our solution delivers the clarity, accuracy, and compliance you need. With smart technology and automated billing, you gain full transparency, saving both time and money. No more guesswork, no more disputes – just precise, automated billing.

Data-based heat cost allocation: How we turn a tedious process into a user-friendly experience.

Real-time monitoring & easy data access.

Exact heat cost allocation starts with precise consumption tracking. Smart metering devices, such as heat cost allocators and heat meters, automatically measure individual usage in each unit and wirelessly transmit data to a central system at regular intervals. This eliminates manual readings and ensures real-time accuracy.

All residents can easily access their consumption data through a user-friendly app or receive detailed reports by e-mail. This transparency not only helps them track their monthly usage but also identify potential savings—making heat billing simpler, fairer, and more efficient for everyone.

Fast, transparent, and compliant heat billing.

At the end of the billing period, the total heating costs are divided into fixed and consumption-based costs. Fixed costs, which typically account for 30-50% of the total, include maintenance, fuel and system operation. The remaining costs are allocated fairly based on actual consumption.

Once the data is processed, each unit receives an easy-to-understand and detailed bill that combines individual usage with shared fixed costs. Each bill is legally compliant, ensuring full transparency and allowing tenants and owners to easily understand their costs.

100% easy

Find your solution with us.

100% digital

Always and everywhere informed.

100% sustainable

We give houses a future.

Good to know: The heating bill also enables accurate and transparent billing of hot water consumption. This gives residents a clear overview of their costs, while property managers and owners benefit from a simple and legally compliant overall solution. Our experts are happy to tailor all billing arrangements to your specific needs during a personal consultation.

Residents

The collected data is visualised in the MYista app, allowing them to track their monthly consumption in real time, monitor usage trends and identify potential savings. This ensures full transparency and encourages more responsible energy use.

Owners and managers

Also benefit from our web portal, which allows them to manage all their property information centrally. With just a few clicks, invoices can be verified and legal requirements met.

Faster & fairer. Upgrade to smarter heat billing with ista.

Get an offer Request a free consultation

Facts & Figures

6,300
Employees

Icon: In einem Kreis in der Farbe lime Grün befindet sich eine abstrakte Darstellung der Erde.

20
Countries

3.7 mil.
t CO₂ emissions avoided

43 mil.
Radio devices

14 mil.
Utilisation units

Frequently asked questions

Discover more innovative solutions to transform your property.

Our custom solutions are designed to help our clients reduce their environmental impact, improve health and safety in their buildings, and save energy costs.

The picture shows a modern residential complex with several white, multi-storey residential buildings standing on the left and right side of a paved path. The buildings have balconies with dark railings, and some balconies are decorated with plants and furniture. A wide, paved footpath stretches between the buildings and continues into the distance. On the left side of the path are lush green areas and colourful flowerbeds that embellish the space between the buildings. On the right-hand side of the path, young trees are planted at regular intervals, forming a green avenue together with manicured lawns. Other buildings can be seen in the background, completing the urban surroundings of the residential complex. The sky is clear and blue, indicating a sunny day. Overall, the picture conveys a calm and pleasant living atmosphere in a modern, well-maintained environment.

Heating optimisation

Optimise heating systems for enhanced efficiency and savings.

Debicasso

Outsource the entire billing process of energy costs to ista.