The Biawar OSKAR series delivers reliable, instant hot water for residential and light commercial plumbing projects. Designed with installers in mind, these single-phase electric flow water heaters offer straightforward mounting, compact footprints, and consistent performance. Whether you are fitting a kitchen sink, a bathroom basin, or a shower setup, the OSKAR lineup provides a practical, code-friendly solution that saves time on the job and keeps end users happy.

Compact Under-Sink Solution: OP-5C

The OP-5C is a pressure-rated, under-sink electric flow heater built for tight spaces. Its compact design slides easily under standard cabinetry, while the pressure-resistant construction ensures safe operation on closed plumbing systems. Installers appreciate the clear inlet and outlet markings, quick-connect fittings, and straightforward single-phase wiring. It delivers instant hot water on demand, making it ideal for kitchen sinks and small bathroom basins where space and reliability matter.

Versatile Over-Sink Design: OP-5U

The OP-5U is a non-pressure, over-sink electric flow heater that mounts directly above the basin. This design eliminates the need for complex under-sink routing and works perfectly in locations where cabinet access is limited. The unit features a simple wall-mount bracket, easy electrical connections, and a durable heating element that handles daily use without overheating. It is a go-to choice for washbasins, utility sinks, and retrofit jobs where quick installation and steady flow are priorities.

Dedicated Shower Heater: OP-5P

The OP-5P is a non-pressure, shower-specific electric flow heater engineered for consistent temperature and reliable performance. Its streamlined housing fits neatly on shower walls, and the single-phase design keeps electrical requirements simple. Installers benefit from the straightforward plumbing connections, built-in safety features, and a flow-activated heating system that only turns on when water is running. It is an excellent upgrade for existing shower setups or new bathroom builds where instant hot water is needed without heavy electrical upgrades.

Why Installers Choose Biawar OSKAR

The OSKAR series stands out for its installer-friendly design, durable components, and consistent heating performance. All models run on standard single-phase power, reducing the need for complex electrical work. The compact sizes fit into tight spaces, while the pressure and non-pressure options cover a wide range of plumbing configurations. With easy mounting, clear labeling, and low maintenance requirements, the Biawar OSKAR series helps professionals complete jobs faster, reduce callbacks, and deliver reliable hot water solutions to homeowners and contractors alike.