Our commercial condensing gas continuous flow water heaters commonly known as gas instantaneous water heaters are designed to deliver energy efficient and reliable hot water for a variety of commercial applications including commercial showers, wash basins, commercial washrooms, hot water taps, industrial processes and much more.

The high flow rates and advanced technology of Rinnai gas fired instant water heaters ensure that optimal performance in terms of energy usage and the delivery of copious amounts of water can be achieved for a wide range of commercial properties.

Find out more about how Rinnai gas fired instant water heaters have been reducing energy consumption for commercial hot water requirements at Case Studies: Commercial Water Heating Solutions | Rinnai UK

The Rinnai hot water heaters are globally respected for their energy efficient performance, optimising water usage and reliability. The Rinnai corporation produce over two million commercial instantaneous water heaters per year, making Rinnai the number one choice for hot water heaters globally.

These tankless water heaters use advanced condensing water heating technology, which extracts additional heat from the exhaust gases, achieving efficiencies of up to 97%. The Rinnai commercial hot water heaters boast the highest efficiencies on the market, making them the water heaters of choice for energy aware consumers.

The Rinnai gas fired water heater range has proven to save up to 30% in energy when compared to conventional water heaters. The primary reason for these significant energy savings comes from the inherent water heating technology. As Rinnai tankless water heaters operate on a hot water on demand basis, energy is only used when the building's hot water services are in operation - in other words power consumption and energy consumption only occurs when heated water is needed.

Rinnai are the specialists in hot water heating solutions and we offer a wide range of water heating options, from our award winning N series commercial continuous flow water heaters, domestic gas instant water heaters, hybrid heating and hot water solutions, instant electric water heaters, electric storage water heaters, LPG water heaters, solar thermal water heating, solar water heaters and low-GWP R290 heat pump technology. We have a wide range of product options with varying power outputs to suit the hot water and central heating demand of a range of commercial buildings.

Internally or Externally Mounted

The Rinnai range of tankless water heaters are available in both internally and externally mounted hot water units, making them versatile and a simple solution for different building installation requirements. The externally mounted instant water heaters are installed outside, freeing up internal plantroom space. The internal N series gas fired continuous flow water heaters have advanced turbo-fan systems ensuring that the Rinnai range have market leading flue runs of over 45 metres.

Large or Small Capacity

Rinnai continuous flow water heaters have a wide range of products ensuring that there will be a large or small capacity water heater for a wide range of building demand scenarios. Rinnai water heaters are on-demand water heaters, therefore unlike storage water heaters as long as a cold water supply and gas supply are constant within the commercial setting then the Rinnai water heaters will deliver a constant supply of heated water.

Temperature Accurate

Another innovative feature of Rinnai instant water heaters is that they can deliver hot water temperatures at the precise temperature required from a mains supply. Inbuilt micro-processors within the advanced gas instant water heaters control systems guarantees that heated water will be delivered at the correct hot water supply temperature accurate to plus or minus one degree of the hot water temperature set point.

This feature is inbuilt across the full range of water heaters which is a significant benefit in terms of user comfort, safety and legionella prevention when compared to conventional water heaters, as heated water is not stored needlessly in the hot water storage tank.

Convert to LPG

The wide range of Rinnai gas fired instant water heaters come pre-set as LPG water heaters or natural gas water heaters, making the selection of products simple. As standard, Rinnai gas fired water heaters contain a conversion kit which is available to convert the natural gas water heater to an LPG instant water heater within several easy steps.

Hydrogen Ready

Rinnai continuous flow water heaters are also ready for alternative energy as our commercial and domestic water heaters are certified as I2HY20, meaning that they are ready for 20% hydrogen blending. This certification is a UK first for commercial instant water heaters ensuring reliable performance whatever the future energy mix.

Advanced R&D developments with the LPG water heater categories of product mean that Rinnai tankless propane water heaters are ready for alternative fuels such as Bio-LPG and renewable liquid fuels. This makes Rinnai modern water heaters an excellent option for off-grid water heating.

For advice on selecting the optimum water heater for your next commercial project, contact us today at Help me choose a product :: Rinnai UK