ENERGY SAVING How Cosysense helps
save electricity Matias Acosta, chief executive of Cosysense explains what Cosysense is and how it works with HVAC systems.
Q. Can you explain what Cosysense is and how it was developed?
A. Cosysense helps SMEs and listed buildings cut electricity costs and greenhouse gas emissions from legacy heating, cooling, and air conditioning systems. We solve the most common issue in shared spaces—arguments over spaces being too cold or hot. Our solution retrofits standalone heating or cooling units with a climate control system combining artificial intelligence and sensors. We are an impact venture so we care about making a difference. That’s why we install our technology for free. Clients access their data and automatic control through a subscription with a simple guarantee: they only pay if their savings exceed our fee.
Q. How does Cosysense integrate with existing HVAC systems?
A. Cosysense provides a universal solution for heating and cooling devices outside building management systems. We retrofit 80% of single and multi-split heating and cooling units with manual or infrared controls. In just one hour, legacy units become smart and can be controlled remotely by managers through a simple platform or fully automated through our climate control system. We focus on heating and cooling units outside building management systems because they are the most common devices in hard-to-decarbonise buildings like listed properties and SMEs. These buildings need solutions to comply with energy efficiency regulations. Additionally, large building portfolios often have many heating and cooling units excluded from their building management systems, making our solution suitable for this fraction of their portfolio.
Q. What inspired the creation of Cosysense, and what are its main goals?
A. Right after Covid-19, we spent time working in cafés and coworking spaces. We were often frustrated by spaces that were too hot or cold. Seeing locked thermostats or hearing the usual manager response, “I can’t change the settings,” sparked the idea. We validated that this was a
24 January 2025 •
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L-r: CTO Sebastian Horstmann and CEO Matias Acosta.
L-r: CTO Sebastian Horstmann and CEO Matias Acosta.
Q. How does the AI system use the data from the sensors to optimise heating and cooling?
common issue for users. Facility managers know heating and cooling units are the largest energy consumers. However, many are not aware that each degree away from optimal comfort settings wastes 2 to 15% of energy. Doing a dynamic personalised control of heating and cooling is hard but can provide huge savings, that is when we decided to start the company. In today’s world, buildings waste energy and
generate unnecessary greenhouse gas emissions that leave their occupants uncomfortable. We want to change this. Our ultimate goal is to connect human analytics with buildings’ operational efficiency.
Q. How do the plug-and-play sensors work, and what kind of data do they collect?
A. Cosysense’s sensors measure occupancy, comfort, indoor temperature, humidity, air quality, and the power consumed by heating or cooling units. This data is complemented with outdoor weather, grid emission factors, and electricity prices for reducing costs and quantifying scope 2 emissions. Our automatic control acts as a copilot,
generating savings from day one after installation. Clients see their data in an intuitive web platform and retain the ability to override settings at any time if desired.
A. Our patent-pending control system uses three key algorithms. First, we create a virtual user for each space to understand typical comfort and occupancy patterns. Second, we replicate the operation of heating or cooling units. These models improve over time using data from occupant comfort inputs and sensors. Their outputs feed a third algorithm: a multi-objective optimisation that determines the optimal comfort state with minimised energy consumption. In this way, we can trigger real-time temperature, humidity, and ventilation settings adjustments. While standards are incorporated into our model, dynamic adjustments allow personalised operations for each building zone. Even two identical buildings may have different settings due to variations in occupant needs. This personalised approach enhances comfort while reducing energy bills and emissions compared to other operational strategies.
Q. What are the key benefits of using Cosysense in terms of comfort, energy savings, and CO2 emission reduction?
A. Cosysense ensures reduced electricity bills and scope 2 greenhouse gas emissions while maintaining optimal comfort. Clients see real- time savings with zero upfront costs, paying only a fraction of the realised savings. We typically achieve power savings of 15%
to 30%. We cut electricity bills by £296 and CO2 emissions by 201 kg optimising a single heating
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