The new Wilo-Isar BOOST5 pressure tank is suitable for universal use in domestic water supply systems and ensures constant water pressure at all times and at every draw-off point. Read the article and find out more!

Thanks to the efficient hydraulic system and acoustic insulation, the system works quietly and almost silently. Due to the modern and compact design, it integrates perfectly with the residential environment. The efficient hydraulic system and operation in line with demand make the device energy and cost effective.
Check out Wilo products in the Onninen store
Wilo-Isar BOOST5 offers the user even more comfort: its installation is completely hassle-free, thanks to the ready-to-connect Plug & Pump system. The LED display and buttons ensure ease of use. Integrated protection functions ensure safe operation. The pump unit, made of high-quality plastic, guarantees a long service life.
Wide range of applications for the Wilo-Isar BOOST5 hydrophore
Wilo-Isar BOOST5 is a domestic pressure boosting system that combines an electric pump, electronics, frequency converter, non-return valves and a control panel for quick and easy installation.
It can be used effectively in a wide variety of residential applications where there is a need to increase water pressure. This includes residential water distribution, irrigation system supply, and collection and distribution of water from tanks or rainwater tanks.
Wilo-Isar BOOST5 includes a frequency converter to maintain a constant water pressure according to the actual needs of the user. This also ensures particularly quiet operation, which is suitable for installation inside the apartment.
The flexibility of the system and the ability to adapt to user requirements make it also effective in terms of reducing energy and water consumption.
Check out Wilo-Isar BOOST
Wilo offers 2 Wilo-Isar BOOST models, both with a maximum delivery head of 8 m and a maximum operating pressure of 10 bar:
- Wilo-Isar BOOST5-E-3 – maximum flow 5 m³/h, nominal power PS 0.75 kW,
- Wilo-Isar BOOST5-E-5 – maximum flow 7 m³/h, nominal power PS 1.1 kW.
Stable pressure, that's how Wilo-Isar BOOST5 works
When the pressure sensor detects a drop in system pressure caused by opening one or more draw-off points, the electronics activate the pump to restore the system pressure to the set value.
The inverter varies the motor speed, modulating hydraulic output according to specific system demand.
Once pressure is restored, the flow sensor will detect no water flow and stop the pump until the next system start.
The system also provides dry-running protection, thermal protection of the motor and inverter against overheating, and electrical protection against sudden changes in voltage and current.
Working modes
Working with suction. Wilo-Isar BOOST5 is factory-set as a device dedicated to operation in the mode of sucking water from a well or tank in which the water level is below the pump nozzle.
Working with the influx. For installations supplied from storage tanks or water mains, it is recommended to switch the device to the inflow mode. This will additionally reduce the noise level.
Wilo-Isar BOOST5 summary, or product features in short:
- Easy installation thanks to the ready-to-plug design.
- Perfect integration into the customer environment thanks to a compact, modern design.
- Quiet operation thanks to sound-absorbing covers.
- Built-in frequency converter for convenient constant pressure regulation and soft start
- Low energy consumption thanks to demand-driven supply.
- Safe operation thanks to extensive, integrated protection functions.