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DOMESTIC SOLUTIONS & APPLICATIONS
Opening up the home energy system
Cameron Beech, head of product management & training, Viessmann Climate Solutions UK, explains why open software is a key feature of Viessmann’s new range of monobloc air source heat pumps
T
he transition to fully electrified UK homes is accelerating, but the next challenge is making sure the technologies being installed
can work together seamlessly. A homeowner may initially purchase a heat pump, then later add solar PV, a home battery or an EV charger as budgets allow.
This means home energy ecosystems are
becoming increasingly networked and complex, which has implications for both homeowners and installers. Each individual piece of kit must be able to communicate with all the other system components, regardless of when they’re fitted or which brand they are. After all, choosing a heat pump, solar PV, battery storage or an EV charger should not mean committing to a single manufacturer’s products for years to come.
Open architecture
Viessmann’s new Vitocal 200-A ie (intelligent energy) monobloc air-to-water heat pump has been developed with all this in mind. Launched in June 2026, it was designed around the One Base Intelligence platform. This interoperable, self- learning home energy management system enables easy integration of technologies from different manufacturers. Rather than treating the heat pump as an isolated appliance, One Base Intelligence makes it part of an open, connected home energy system that continuously learns and adapts to the needs of the home. Users can control every linked device, manage individual room settings and monitor energy consumption using the ViCare app.
Meanwhile, automatic over-the-air software updates ensure the system stays current and gains new functions over time. At the heart of this approach is a new Universal
Controller, which can automate operation around time- of-use tariffs, making it simple to respond to dynamic electricity prices and make use of periods when power is cheaper. Crucially for installers, this functionality does not require an expensive external gateway.
UK specific
The design of the hea pump has also been heavily influenced by the British installation environment, with direct input from well-known UK renewable heating specialists. Details such as wiring arrangements and pipe locations have been tailored to the way British homes are actually used. This includes consideration of the space
available in areas such as airing cupboards, where equipment and connections need to be accessible without compromising valuable storage space. The Universal Controller, for example, (which can also be used as a standalone control unit to integrate solar PV or other brands of heat pumps or air conditioners into the ViCare app) measures just 45 x 40 x 13.5cm, making it practical to locate on an internal wall or hot water cylinder. Similarly, the heat pump and electrical heater are
integrated within the outdoor unit. This reduces the amount of work required on site and can simplify installation compared with systems where key components need to be positioned separately. Reduced-noise operation, at around 54-56dB(A), also makes it a highly practical choice for urban
properties and homes with limited space. All this has been achieved at a competitive price point and without any compromise on engineering quality or environmental credentials. The Vitocal 200-A ie uses R290 refrigerant, with a GWP of just 0.02, and has an A+++ energy rating. Transport and handling have also been
considered. The outdoor units are relatively light, at around 90-118kg, and are compatible with Euro pallets, helping to simplify movement from delivery point to installation location. With flow temperatures reaching up to 75°C,
the range covers outputs from 4 to 12kW, making it suitable for an estimated 70-80% of UK homes. However, the system can also be scaled where higher outputs are required, with up to four units capable of being combined for a total output of 48kW. This gives installers scope to apply the same intelligent-energy approach beyond the typical single-home installation.
Connected future
As electrification brings more technologies into the home, compatibility will become an increasingly important part of the installation conversation. An open ecosystem gives installers greater flexibility while allowing homeowners to build their energy system progressively. By combining UK-informed installation design with intelligent tariff management and an approach that is not dependent on a single manufacturer’s wider product range, the heat pump is positioned as a central component of the home’s energy system rather than a standalone heating appliance.
DOWNLOAD THE HVR APP NOW October 2026 27
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