Key Information
- 150-litre capacity — ideal for apartments, family homes, and modern properties
- Internal overflow design — no external overflow connection required
- Indirect thermal store design — incorporates a primary coil for alternative heat sources
- Open-vented thermal store — not subject to Part G Building Regulations
- 14-bar rated primary coil — suitable for district heating and higher-pressure applications
- Fast pre-heat capability — heats from a boiler in as little as 10 minutes
- Mains pressure hot water — delivers strong and consistent performance
- ErP B energy rating — supports efficient energy usage
- Low standing heat loss — only 1.12kWh per day
- Compatible with off-peak electricity tariffs — helps reduce running costs
- Suitable for use with solar PV systems — maximises renewable energy generation
- Reduced legionella risk — supports improved water hygiene
- 5-year warranty — added peace of mind
What's Included
- Harlequin HeatStream Electric Plus 150L Indirect Mains Hot Water System Internal Overflow - HS150EPLUS-IOF
The Harlequin HeatStream Electric Plus 150L Indirect Mains Hot Water System Internal Overflow combines efficient hot water delivery with the flexibility of an integrated internal overflow system. Designed for apartments, family homes, and modern properties, it provides a dependable supply of mains pressure hot water while eliminating the need for a traditional external overflow connection.
With a 150-litre capacity and the ability to connect to an alternative heat source, it offers a practical and versatile solution for modern households seeking reliable hot water cylinders.
Internal Overflow for Greater Installation Flexibility
The HS150EPLUS-IOF features a fully internal overflow design, making it ideal for properties where routing an overflow externally or to a low-temperature waste pipe is difficult or impossible. This added flexibility can simplify installation while maintaining safe and reliable operation.
As an open-vented thermal store, it is not subject to Part G Building Regulations or the discharge requirements associated with traditional unvented systems, removing the need for G3-qualified installation.
Indirect Heating with Fast Recovery
The Electric Plus range incorporates a primary heating coil, allowing the system to utilise an alternative heat source such as a boiler or district heating network. The 14-bar rated primary coil can pre-heat the store in as little as 10 minutes, helping ensure hot water is available quickly when required.
Large-surface-area stainless steel corrugated coils further improve performance by delivering exceptionally fast heat transfer throughout the system.
Energy Efficient Operation
With an ErP B energy efficiency rating and low standing heat losses of just 1.12kWh per day, the HS150EPLUS-IOF is designed to minimise energy waste. It can also help maximise the benefits of off-peak electricity tariffs and solar PV systems, helping homeowners reduce running costs where suitable energy sources are available.
This makes it a highly efficient option among modern thermal store cylinders.
Durable and Low Maintenance
The outer casing is manufactured from durable polyethylene to help protect against accidental damage, while the inner tank is constructed from non-corrosive polypropylene, making it particularly suitable for areas with challenging water conditions.
With very few moving parts, minimal servicing requirements, and a simple six-monthly top-up, ongoing maintenance is kept to a minimum. The design also helps reduce the risk of Legionella, supporting improved water hygiene.
Ready to Upgrade Your Hot Water System?
If you're looking for efficient hot water cylinders that offer flexible installation, fast recovery times, and compatibility with alternative heat sources, the Harlequin HeatStream Electric Plus 150L Internal Overflow model is an excellent choice. Order today from PlumbNation and discover the benefits of modern thermal store cylinders designed for dependable and energy-efficient hot water performance.
