Kelda Showers

Conventional ‘aerating’ showers use the Venturi principle to restrict flow and draw atmospheric air into the water through a small hole in the showerhead. In contrast, Kelda’s Air-Powered™ showers use a high-velocity air stream to reduce the flow rate, using less water and less energy to heat the hot water required compared to a standard shower, creating fewer carbon emissions.

The company’s showers have been tested in real-life environments to ensure they can withstand the pressures of high usage, comply with the water supply (water fittings) regulations, feature certified thermostatic mixing valves and meet all building regulations under the proposed Future Homes Standard.

Kelda Showers wanted to apply its technology to the consumer market and wished to gain further assurance and trust for this new market through independent verification.

To ensure its energy saving claims were valid and its product met high energy performance standards, Kelda requested product performance verification from Energy Saving Trust, based on submitted evidence, to provide quantitative statements of water, energy, financial and carbon savings from using the product.

These verified savings would help build assurance in Kelda’s product’s performance within the consumer market. We check verified marketing claims based on the energy performance of their products, helping win consumer trust and highlight their commitment to sustainability.

“It is not only extremely important for manufacturers to design energy efficient products, but they must ensure the technology savings can be demonstrated and verified to consumers. As an independent body Energy Saving Trust has decades of experience verifying results and claims, so  when it comes to energy efficiency and energy savings it’s not just ‘Kelda Showers says this…’ it’s ‘Energy Saving Trust has verified this…’”

– Paul Ravnbo-West, marketing director, Kelda Showers

Our team assessed Kelda Shower’s Air-Powered™ shower relative performance based on a combination of evidence from Kelda Showers, Energy Saving Trust’s existing evidence, assumptions around householder behaviour, and the performance of standard showers and water heating systems.

“It has been a pleasure working with the insights and marketing teams to create the Kelda x Energy Saving Trust Product Performance Verification Report. We hope that through publishing this information, consumers will see the value in higher performing assets and encourage the purchase of more efficient and sustainable products.”

– Paul Ravnbo-West

In our final report, we detailed Kelda’s Air-Powered™ shower’s potential to save water, energy, money and carbon dioxide emissions when used in place of conventional showers.

We have verified the following claims¹ that Kelda Showers can confidently use in communications to its customers.

Kelda aims to become a leading sustainable manufacturer, and this includes the responsibility of its products throughout their life cycle.

“Kelda are pioneers of high-efficiency showers using Air-Powered™ technology. Our aim is to reduce water, energy and carbon emissions from showering while enhancing wellbeing. We hope that we can play our part in creating a more sustainable future.”

– Paul Ravnbo-West

[1] Based on Ofgem’s typical annual energy use for a 4+ bedroom home and 4-5 people: 17,000kWh for gas and 4,300kWh for electricity.

[2] Based on an average kettle electricity consumption of 169kWh/year (source: National statistics) and 1542 uses per year (source: EST).

[3] Based on Energy Saving Trust’s mean household CO2 emissions of 5.51 tCO2e/household of four.

[4] Based on average car emitting 0.276 kgCO2e per mile and a distance of 118 miles.