For commercial organisations the mandate to decarbonise is clear. In commercial settings, domestic hot water can account for up to 30% of a building’s daily energy consumption. To meet peak demands and strict anti-legionella regimes, operators often feel trapped between costly, oversized heat pump installations or high-operating-cost direct electric systems.
Adveco’s FUSION TW/TWplus offers a packaged, pre-sized hybrid approach that slashes emissions while bypassing the complexities of bespoke design. An alternative for newbuilds and gas-to-electric retrofits, it harnesses a hybrid architecture rather than relying on a single large, expensive heat source. By offsetting primary heating with a low-carbon alternative, it reduces grid demand, driving savings superior to gas and standard direct electric systems. At the heart of the FUSION TW/ TWplus is the integration of an ADV-Wseries air source heat pump (ASHP) and the ARDENT electric boiler. These units work in tandem with a 750-litre ATST twin-coil cylinder to create a highly efficient indirect water heater. The TWplus incorporates an additional backup immersion for assured operation with no single point of failure.
A common pitfall in commercial HVAC is the drop-off in efficiency when heat pumps are forced to work at high temperatures. To reach +55°C, heat pumps must work harder, drawing more energy and increasing costs. Adveco, in partnership with Midea, developed the ADV-W range to solve this. These monobloc units maintain high seasonal efficiency while delivering a continuous 60°C output. This ensures a consistent pre-heat, allowing the top-up heating to easily reach the +65°C required for legionella protection.
The use of R32 refrigerant reflects a commitment to safety and the environment. R32’s lower Global Warming Potential enabled a compact, single monobloc outdoor form factor which is lower cost to purchase, install and operate. Supporting the ASHP is the ARDENT electric boiler. Unlike traditional immersion systems prone to limescale, the ARDENT operates in a sealed ‘primary loop’ configuration. By recirculating a finite amount of water through a heat exchanger, it eliminates scale issues, extending the lifespan and reducing maintenance callouts.
New enhancements, including a larger primary heating coil within the cylinder means even greater power, up to 24kW, is now available from ARDENT in the same compact 400 and 580 litre form factors. This makes it possible to meet instantaneous draw off demands of up to 225 litres or maintain continuous flow rates of up to 855 litres/hour for demanding applications.
The greatest risk in a hybrid system is where two sources work against each other. FUSION uses smart control to deploy intelligent climate curves, adjusting water temperatures based on external conditions. The system maximises the heat pump’s contribution before blending in the ARDENT boiler. adveco.co