The key features and benefits of DELTA electric boilers include:
- Low carbon heat source: Electric boilers provide a low carbon heat source, making them ideal for 'all-electric' buildings where there is no gas connection.
- Consistent, stable flow temperature: DELTA electric boilers provide flow temperatures up to 95°C as standard, ensuring a consistent and stable heat output.
- Optimised, modulating output: The boilers use multiple elements to modulate the output from maximum down to a single stage of operation, matching the site's heating demand.
- Integration with other heat sources: DELTA electric boilers can be integrated with other heat sources, such as heat pumps, to form hybrid energy centres.
- Flexibility for new build and retrofit: DELTA electric boilers are suitable for both new build and retrofit installations into existing buildings.

DELTA electric boilers provide peak capacity and system resilience to support heat pumps in hybrid energy centres. This minimises the capital cost of the heat pump installation and reduces the external footprint required for an air source heat pump. By providing the peak capacity, the heat pump can be sized more optimally, reducing both the CAPEX and OPEX costs.

Key statistics of DELTA electric boilers include:
- Available in 25 models ranging from 31 to 1400 kW
- Large turn-down ratio, modulating down to a single stage of operation
- Minimises CAPEX as heat pumps do not need to be sized to peak capacity
- Overcomes heat pump capacity and flow temperature shortfall
- Adds system resilience with flow temperatures up to 95°C as standard
- Available in 400V 3-phase, with 690V also available on some models
- Packaged plate heat exchanger (PHE) option for network pressures over 6 bar

DELTA electric boilers can be used to balance the electricity grid by reacting to tariff and carbon signals and quickly turning surplus low-cost renewable power generation into stored hot water. This helps to stabilise the grid and make the most efficient use of available renewable energy sources.

In an all-electric energy centre, DELTA electric boilers provide cost-effective peak capacity to support an optimised heat pump installation. The electric boilers' ability to turn down to a single stage of operation and modulate in small increments allows them to top-up the output from the heat pumps as required. Boiler capacity can be large, but its share of the overall energy use should be minimised to maintain a low carbon footprint and low operating costs. Additionally, as the electric boiler operation is designed to be intermittent or as a standby plant, long-term safety and reliability are important considerations.