Point of Use Water Heaters

Point-of-use water heaters are designed to supply hot water directly at the outlet, reducing pipe runs, heat loss, and waiting time. Typically installed under or over a sink, these compact units are ideal for offices, retail spaces, commercial washrooms and light industrial environments.

Heatraq supplies a wide range of point-of-use water heaters, including both instantaneous and small storage models. These units are commonly used for hand washing, staff kitchens and utility sinks, offering a practical and energy-efficient solution for localised hot water demand.

FAQs Point-of-Use Water Heaters

What is a point-of-use water heater?

A point-of-use water heater is a compact unit installed close to the outlet (typically under or over a sink) to provide hot water where it’s needed. This reduces pipe runs, heat loss and waiting time, making it ideal for offices, retail spaces and light commercial environments.

What’s the difference between point-of-use and instantaneous water heaters?

“Point-of-use” describes where the heater is installed (at the outlet). “Instantaneous” describes how it heats water (on demand as it flows). Point-of-use heaters can be either instantaneous or small-storage models, depending on the application.

Should I choose an undersink or oversink water heater?

Undersink units are hidden away and feed a dedicated outlet below the counter, while oversink heaters are wall-mounted above the basin/sink and are often chosen where space below is limited or a fast retrofit is needed.

Do I need a vented or unvented point-of-use heater?

Vented (open outlet) models are paired with a compatible open-outlet tap and are commonly used for simple single-outlet installs. Unvented models are sealed and supplied from the mains, typically used where pressure and system compatibility require it. Always match the heater type to the intended outlet and installation method.

What size point-of-use water heater do I need (litres)?

Capacity depends on usage and outlet type. Smaller tanks suit hand washing and light kitchen use, while larger point-of-use storage heaters can support more frequent draw-off at a single outlet. If you’re supplying multiple outlets or higher demand, a larger storage or cylinder-based solution may be more suitable.

Are point-of-use water heaters energy efficient?

They can be very efficient because hot water is generated close to the outlet, reducing heat loss through long pipework and cutting “dead-leg” waiting time. Correct sizing is key—oversizing can increase standby losses on storage models.

Can a point-of-use heater supply more than one tap?

Some models can serve more than one outlet, but performance depends on capacity, recovery rate and simultaneous demand. For consistent multi-outlet use, you may be better served by a larger storage system or a centralised solution.

Are point-of-use water heaters suitable for commercial environments?

Yes. They’re widely used in staff kitchens, utility sinks and wash stations in offices, retail, hospitality and light industrial sites—especially where localised hot water is required without installing a full central system.

Do point-of-use water heaters need specialist installation?

Most require a suitable electrical supply, isolation, and correct tap/valve compatibility (especially for vented/open-outlet models). Installation should be completed by a qualified professional in line with current regulations and the manufacturer’s instructions.