Bridgewater House, built in 1771, is a classic two-and-a-half storey Georgian house designated a Grade II listed building. It is near the lower end of a line of 10 locks leading from the Runcorn basin of the Bridgewater Canal to the River Mersey. Originally built for the use of the Duke of Bridgewater, it has since been used for various purposes and has now been converted into offices by owners, Bridgewater Property Management.

In 2012, the company, alarmed by ever rising fuel bills, asked Runcorn-based heating engineer Dave Winrow, who runs the business with his son Benjamin, to come up with an energy efficient solution for the building’s heating and hot water.

Winrow went to look at the old system that comprised two combis and two boilers. “The archaic boiler system, although very dilapidated was still working, but as it was 10 years old or more and definitely needed replacing with a system that would be easier on running costs.”

Winrow decided to install three Rinnai high efficiency commercial instant water heaters, effectively making up a tri-flow hot water package, teamed with two Rinnai E32 boilers to provide hot water and heating to all floors. The installed system reduced the fuel costs by 200%.

Since then, the units have been serviced every year, without fail. But the units have never, ever had a single part replaced – that’s approaching 14 years of service providing temperature accurate hot water.

Says Ben Winrow, “The Rinnai continuous flow water heaters are a fully modulating 54kW unit that gives constant hot water produced separately from the boiler on secondary return. In summer the boiler doesn’t need to fire up at all. It is a prime example of a modulated unit at its best as the unit’s 50kw capability can modulate down to 6kw. It is very clever because it knows exactly how much gas to use to heat the water due to its multi solenoid burner, so it saves fuel and money. With other water heaters they are either full on or off.”

“The site saw heating and water bills tumble from £4,500 per annum to just £1500 in the first year of installation. Over the 14 years the savings run to over six figures.”

The Rinnai Sensei N series succeeded the HD range and achieved the same standard of durability and longevity. All appliances are manufactured under strict guidelines of ISO 9001 quality management and ISO 14001 environmental management and come with full manufacturers’ warranty.

Rinnai N Sensei Series continuous flow water heaters are designed to provide domestic and commercial access to vast volumes of cost-effective, clean and temperature controlled hot water. Rinnai aim to supply UK customers with practical, economic and technical solutions for water heating and building heat.

The Rinnai Sensei N Series is the first ever continuous flow hot water heating unit manufactured with stainless steel heat exchangers to be available in the UK – this provides a greatly extended working life at optimum performance to each of the four models in the range.

The four models are: the N1600i giving 954 litres per hour; the N1600e (external) also giving 954 litres per hour (at 50 degrees); the N1300i giving 775 litres per hour and the N1300e also giving 775 litres per hours of temperature controlled at 50 degrees. The two 1600s have load profiles of XXL and are water efficiency class A rated, while the 1300s are load profile XL and are also water efficiency class A rated.

Rinnai provide full product availability 24/7 for next day delivery of ALL hot water heating units, including 48-58kW models.

20% REDUCTION of opex cost

30% REDUCTION of initial cost

15% REDUCTION in carbon

75% REDUCTION of space

For more information on the RINNAI product range visit www.rinnaiuk.com