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National Chain of Gyms Installs Rinnai Air Source Heat Pumps


One of the UK’s biggest chains of gyms and leisure centres has switched to using products from the Rinnai range of commercial air source heat pumps - and electric cylinders - as a major part of hybrid heating and hot water systems at sites up and down the country. The innovative new range of air source heat pumps utilize R290, a LOW scoring GWP (Global Warming Potential) refrigerant​.

Ease of install was cited as a major reason for the switch away from one of the major heat pump brands.

The installation team was quoted as stating that ‘Setting up was straightforward and simplified, this was owing to the easy navigation through parameters that enabled their part of commissioning to be shortened. When commissioning other brands there were numerous parameters and set points, in fact there are layers and layers of them – this means that if one is set incorrectly then it can lead to extensive, expensive time on site in rectifying a small issue’.

He added, as the Rinnai systems are provided complete with heat pump, controls, cylinders, valves and auxiliary heat sources along with schematics and telephone support the installation was hugely streamlined.

Rinnai’s R290 air source heat pump range is available in 11 different sizes, from 6 kW up to 50 kW. All units arrive with control systems that allows real time programming and customization enabling specific customer requirements to be met.

R290 allows for several operational benefits: energy efficiency is improved by 10%, hot water temperatures of up to 75 degrees Celsius can be achieved and R290 usage provides compliance alongside the European F-Gas Regulation which focuses on phasing down refrigerant environmental impact. 

To preview this exciting new range visit and receive an information pack for all new Rinnai products visit and leave your details.

As well as providing an extensive list of low carbon technologies Rinnai also offers a range of online customer services that assist in customer choice and information. 

Rinnai’s carbon calculation service considers design from a holistic perspective of capital expenditure, operational expenditure, and carbon savings. Rinnai’s carbon calculation service will compare a customer’s current heating or DHW system to Rinnai’s product portfolio of low carbon, high performance, heating systems that are all proven to reduce cost. This feature will enable customers to view proven benefits when investing in a Rinnai system and understand the practical, technical, and economical benefits achievable from Rinnai system specifications.

Rinnai low-GWP range of heat pumps demonstrate Rinnai’s continuous dedication to producing low cost, highly efficient and thoroughly robust appliances that reduces operational expenditure and carbon emissions. 

A hybrid (or dual fuel) heating system combines both a high efficiency continuous flow water heater or a hydrogen blend ready 20% water heater with a renewable heating system such as a heat pump or a Solar Thermal arrangement. 

Widespread use of hybrid heating and hot water systems are increasingly relevant to the heating industry as the UK Government aims to reduce national reliance on fossil fuels. A hybrid system can meet all objectives in terms of being practical, economical and technically feasible. 

A hybrid system would be an ideal option for projects looking to replace or upgrade their hot water system with a more energy efficient and cleaner solution. A hybrid system provides designers, property owners and managers with the familiarity of the continuous flow water heating system and renewable energy generated by a heat pump or solar thermal array.  

Rinnai’s Hybrid solution is market leading technology owing to its ability to conserve energy. This is achieved by each gas fired water heater reading the temperature of the preheated hot water and modulating the gas input to boost required water temperature. This means that the renewable gains are maximised and the use of natural gas or hydrogen in the future is optimised. For more insights on Hybrid systems visit

Consultants, specifiers and contractors should seek manufacturers and suppliers with systems technology that is equipped with smart controls and adjusts performance on a constant basis in the drive to lowering carbon outputs yet retaining the need to create a healthier way of living. 

RINNAI’S H3 Decarbonisation Offers Pathways & Customer Cost Reductions For Commercial, Domestic and Off-Grid Heating & Hot Water Delivery

Rinnai’s H3 range of decarbonising products includes hydrogen / BioLPG ready technology, hybrid systems, and a wide range of LOW GWP heat pumps and solar thermal. Also, within Rinnai’s H3 range is Infinity hydrogen blend ready and BioLPG ready continuous flow water heaters which are stacked with a multitude of features that ensure long life, robust & durable use, customer satisfaction and product efficiency.

Rinnai’s range of decarbonising products - H1/H2/H3 - consists of heat pumps, solar, hydrogen in any configuration, and hybrid formats for either residential or commercial applications. Rinnai’s H3 range of products offers contractors, consultants and end users a range of efficient, robust and affordable decarbonising appliances which create practical, economic and technically feasible solutions. The range covers all forms of fuels and appliances currently available - electric, gas, hydrogen, BioLPG, rDME solar thermal, low GWP heat pumps and electric water heaters.

Rinnai H1 continuous water heaters and boilers offer practical and economic decarbonization delivered through technological innovation in hydrogen and renewable liquid gas-ready technology.

Rinnai’s H1 option is centred on hydrogen, as it is anticipated that clean hydrogen fuels will become internationally energy market-relevant in the future; Rinnai water heaters are hydrogen 20% blends ready and include the world’s first 100% hydrogen-ready hot water heating technology.

Rinnai H2 – Decarbonization simplified with renewable gas-ready units, Solar Thermal and Heat Pump Hybrids.  Rinnai H2 is designed to introduce a practical and low-cost option which may suit specific sites and enable multiple decarbonisation pathways with the addition of high performance.

Rinnai H3 – Low-GWP heat pump technology made easy - Rinnai heat pumps are available for domestic and commercial usage with an extensive range of 4 - 115kW appliances.

Rinnai’s H3 heat pumps utilise R32 refrigerant and have favourable COP and SCOP.

Rinnai is a world-leading manufacturer of hot water heaters and produces over two million units a year, operating on each of the five continents. The brand has gained an established reputation for producing products that offer high performance, cost efficiency and extended working lives.

Rinnai’s commercial and domestic continuous-flow water heaters offer a limitless supply of instantaneous temperature-controlled hot water and all units are designed to align with present and future energy sources. Rinnai condensing water heaters accept either existing fuel or hydrogen gas blends. Rinnai units are also suited for off-grid customers who require LPG and BioLPG or rDME.

Rinnai products are i2HY20 certified, A-rated water efficiency, accessed through multiple fuel options and are available for purchase 24/7, 365 days a year. Any unit can be delivered to any UK site within 24 hours. Rinnai offer carbon and cost comparison services that will calculate financial and carbon savings made when investing in a Rinnai system. Rinnai also provide a system design service that will suggest an appropriate system for the property in question. Rinnai offer comprehensive training courses and technical support in all aspects of the water heating industry including detailed CPD’s. More information can be found on Rinnai’s website and its “Help Me Choose” webpage.