New from Rinnai is a comprehensive range of heat pumps plus all ancillary products such as hybrid hot water tanks are now available for direct delivery to site in one complete system consignment. Rinnai Heat Pumps are an integral part of the H3 list of solutions to achieve lower carbon. Rinnai heat pumps are the optimal choice in decarbonising technology that ensures immediate domestic and commercial carbon neutrality.

Rinnai’s range of Monobloc air source heat pumps are available in an assortment of variants, from 4 to 110kW. Rinnai Monobloc air source Low-GWP heat pump technology allows up to seven units to be cascaded together, making the Rinnai heat pump range an ideal choice for any heating or hot water demand. The innovative ability of the system to switch between heating, hot water, and cooling mode ensures that the Rinnai range has flexibility and durability as standard.

The units omit minimum acoustics via an installed ultra-low sound capability making Rinnai heat pumps suitable for any area with prohibitive sound legislation. Rinnai’s range operates within compliance of all stringent sound standards ensuring low-sound functionality.

All Rinnai heat pumps use R32 refrigerant, renowned for reducing electricity consumption by up to 10% and for holding a lower global warming potential (GWP). R32 has a GWP one-third lower than other refrigerants. Rinnai’s HPI heat pump range is ratified with an ERP rating of A +++ and includes an ability to switch between settings of heating, hot water and cooling.

Rinnai’s heat pump range delivers all domestic and commercial requirements whilst negating the release of any harmful toxicants into the atmosphere. Rinnai’s heat pump range maintain a high level of operational performance and can service all domestic and commercial needs.

Rinnai’s H3 LowGWP 55kW Heat Pump/Hybrid Hot Water Tanks with cascaded continuous flow hot water heating units were recently specified at a new development in the heart of the Farringdon district of London. The site is for a luxury hotel plus prestigious office complex and affordable homes.

The site will eventually have a 150+ bedroom luxury hotel, almost 20,000 sq ft of opulent capital city office space and nine new-build affordable residential units. The hotel group already has one other hotel in London with two others planned.

Rinnai products are designed to perform at a high operational level, maintain a robust product lifecycle whilst reducing customer cost and environmental impact across the entire purchase process.

Rinnai’s HPI heat pumps, hybrid formations, electrical formats and hydrogen gas mix powered water heaters are part of the H3 range of products. All new models are designed to reduce decarbonisation, energy efficiency and reduce customer costs by offering practical, affordable and technological solutions to UK customers.



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Rinnai’s H3 range of decarbonising products include 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 pump, solar, hydrogen in any configuration, hybrid formats for either residential or commercial applications. Rinnai’s H3 range of products offer 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.




EnviroVent, one of the UK’s leading ventilation manufacturers, has launched a new MVHR (Mechanical Ventilation Heat Recovery) range, which is Passivhaus certified*.

The Sabik 350 & 500 series has been designed to provide balanced and sustainable ventilation for new and refurbished homes, incorporating modular features, with user-friendly controllability.

Mark Isles, New Build Director at EnviroVent, said: “These high efficiency whole house ventilation systems are a major innovation in ventilation system design, as part of our commitment to helping the new build sector meet increasingly stringent ventilation and airflow requirements. The Sabik 350 & 500 Series includes modular options offering Passivhaus compliance and incorporates key features as standard, including on site unit handing configurations providing installer flexibility, in addition to optimised ventilation, good indoor air quality and reduced overall energy consumption.”

The Sabik 350 and 500 systems have significant airflow capacity of up to 414m3hr** and 601m3hr** respectively, and are suitable for handing airflow directions and drain on site to offer flexibility when it comes to ducting configurations.  These modular units incorporate a range of features as standard, including integrated relative humidity sensor, touchscreen controller and frost protection.

The Sabik 350 unit is Passivhaus certified providing that the modular preheater and enhanced ePM1 70% filter are installed. The Passivhaus concept is the only internationally recognised, performance-based energy standard in construction.

Optional features of the Sabik 350 and 500 systems include a pre-heater, Volatile Organic Compounds (VOC) sensor, wall spacer bracket for tight installations, and constant flow module which provides the ultimate versatility.

The units offer flexible commissioning methods to ensure easy install and commissioning which includes the use of the modular constant flow control.

Available in two sizes to suit different properties, the systems benefit from minimal noise levels thanks to reduced air leakage, as well as offering energy efficiency benefits which help to save on annual heating costs.

The range’s mechanical summer bypass function provides an improved comfort level in warmer weather and can be controlled manually or automatically.

When connected to an AirSens® sensor, the Sabik 350 and 500 systems react automatically to changes in air quality, instantly increasing the extraction rate to maintain a healthy environment when needed.

EnviroVent has been a ventilation solutions provider to UK housing for 35 years, working with developers, consultants and specifiers.  The company often works with architects and consulting engineers at early stages of design, to ensure the ventilation strategy meets Building Regulations, SAP requirements, environmental conditions or Passivhaus requirements. EnviroVent’s technical and customer service teams, area specialists and engineers deliver support and expertise at each stage of a project cycle and aftercare, integrating seamlessly with all project stakeholders.

For more information on ventilation solutions from EnviroVent, visit the website or call 0845 27 27 810.

For more information on the Sabik 350 and 500 please visit









H1 – Hydrogen / BioLPG ready – H2 – Hybrid Solar Thermal and heat pump – H3 LOW-GWP heat pumps

THE informed CHOICE


Chris Goggin argues that when logically thinking of current UK national energy legislation, Rinnai’s range of H3 products can deliver all commercial, domestic and off-grid properties heating and hot water solutions. Rinnai’s H3 range is well placed to deliver heating and hot water to all UK sites that are interested in low-cost decarbonisation.




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UK customers of energy and energy related products are presently experiencing increased levels of financial turbulence. UK energy policy stipulates that fossil fuels will be gradually withdrawn from power options and renewable energy alternatives being used in replacement.

The UK government views renewable sources of energy as cost-effective and sustainable. When thinking of investing in a heating or hot water system for a domestic or commercial property it is worth pausing to consider current and future legislative direction.

As fossil fuels are targeted for actively being phased out of circulation, seeking a decarbonising heating and hot water system has become a prominent issue to UK customers. UK customers must now think logically when considering future energy and energy related products.

Current domestic UK policy is keen on expanding on and offshore wind farms for electrical generation. Construction of on and offshore wind farms are continuing with several beginning operations soon, or have already started production, such as Triton Knoll and Hornsea 2.

Only recently wind farms across the UK have set a record for secondary power generation. National Grid ESO said that during a 30-minute period on the 2nd of November, wind farms accounted for 53% of Britain’s electricity. The previous record was set last week when 19,936MW of electricity was provided towards national demand by on and offshore wind farms in a half hour period.

UK acceptance of renewable wind farms has been gradually growing since initial introduction in the 1980s. Communities strongly opposed plans to install wind farms as they were viewed as distorting natural scenery and therefore potentially affecting house prices.

Since the 1980s a climate emergency has been imposed and energy costs have reached exorbitant levels. A survey taken by RenewableUK demonstrates that the UK public now overwhelmingly supports the installation of new solar, wind (on and offshore) and wave power facilities to tackle on-going issues relating to the cost-of-living crises and energy costs.

RenewableUK gathered the following results when asking if the public was in favour of renewable energy installations that reduce electricity bills: 81% were in favour of solar energy, 76% of people backed offshore wind, 74% in favour of onshore wind and 72% support tidal and wave power.

To protect UK customers against market volatility and enhance domestic energy security, the UK government must seek alternative and sustainable methods of energy cultivation. As a result, renewable sources of energy will be steadily introduced into the UK domestic energy mix.

Public support and relaxed legislation will see renewable energy production and dispersal become widespread. Rinnai hold a selection of products capable of fulfilling any UK customer requirements regarding the purchase of a decarbonising heating and hot water system.

Rinnai’s H3 range includes all mainstream varieties of renewable energy alternative options including, solar thermal, heat pumps, Bio LPG water heaters and boilers and solar thermal tube collectors. All options focus on decarbonisation and reducing customer cost across all stages of product life cycle.

Rinnai can offer multiple avenues of cost reducing decarbonisation across various energy vectors. To create a healthier way of living, Rinnai is offering customer choices in hot water provision as well as heating domestic and commercial buildings through a wide range of renewable energy systems.

Rinnai’s solar thermal water heating systems are a decarbonising commercial option. Rinnai’s Solar thermal VirtuHOT units are designed and manufactured in conjunction with Naked Energy. Core design values of VirtuHOT has benefited from multiple workshops with experienced installers, whose valuable insights have been integrated into design and innovation. VirtuHOT saves up to 3.5x more carbon per m2 compared to conventional solar technology.

Rinnai’s H3 range of decarbonising products include commercial and domestic heat pumps that contain a variety of features: the HPIH range of commercial heat pumps is suited towards schools, restaurants and small retail outlets. Rinnai’s HPIH Monobloc Air Source Heat Pumps – 21, 26, 28 & 32kW range can allow for up to seven units to be cascaded together or operate alone as one unit. Once joined together – can serve increased demand for heating and hot water.

The HPIH series includes a range of controls and system peripherals which ensures that all technical machinations can be monitored. Rinnai’s HPIH commercial heat pumps also deploy the refrigerant – R32, which contains a low GWP. The HPIH use maintains an ERP rating of A++ making this range of heat pumps an ideal economic and environmental option for refurbishment projects.

Rinnai’s HPHP series of domestic heat pumps arrive with the ability to save up to 25% of power input, enhancing efficiency and operational performance. State-of-the-art technology added in the injection process outperforms gas compression technology and ensures that even with outside temperatures of –25 Celsius, heating and hot water of up to 60 + Celsius can still be delivered.

Rinnai’s HPI SL range models perform with ultra-low sound capability ensuring compatibility with areas that hold strict sound compliance standards. All units operate in three different modes: heating, cooling and DHW. All three models include specific system programmes that enhances product performance in all modes.

UK energy policy is aimed towards long term renewable energy production that is sustainable and free from outside malign market influences. Logical thinking infers that the UK customer must begin considering investing in decarbonising renewable heating and hot water provision. For more information and details contact


Rinnai’s product and service offering is based on H3- Hydrogen, Heating and Heat Pumps – which allows any site in either residential or commercial sites to maximise the energy efficiency and performance in striving for NetZero and Decarbonisation. Additionally, Rinnai is developing and introducing electrical formats to all existing product ranges within the next few months. Rinnai’s new “H3” range of products includes a wide selection of commercial heat pumps as well as hydrogen blends-ready and hybrid hot water heating systems.

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

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

Rinnai units are UKCA 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. System design services are available if needed and cost comparison services are accessible to all customers who require further cost detail.

Rinnai’s Innovation Manifesto clearly outlines the path to carbon neutrality and maintains a pledge to fully decarbonize company operations by 2050. Rinnai will further support the global clean energy transition by introducing a wide variety of domestic heating options across multiple energy vectors.

Rinnai is committed to decarbonisation. Rinnai’s water heating products are all hydrogen-blends ready NOW including the world’s first 100% hydrogen powered water heater. Rinnai products also accept BioLPG capable of delivering NetZero carbon emissions. Rinnai offer comprehensive training courses and technical support in all aspects of the water heating industry. More information can be found on Rinnai’s website and its “Help Me Choose” webpage.

CLICK HERE For more information on the RINNAI product range



Ariston has launched its brand new ONE Series range of high performance condensing gas boilers and controls. Comprising three A-rated boiler models – the E-Combi ONE, Clas ONE and Clas Net ONE – the new range combines modern, Italian design with the latest materials and a user-friendly interface. Intelligent, robust and efficient, these are also the quietest units Ariston has ever produced.

The technologically advanced ONE Series boilers boast a patented stainless steel, continuous coil XtraTechTM heat exchanger. With 142% wider waterways than previous models, it allows water to pass through quicker and more effectively – ensuring less risk of blockages from debris. The component is exceptionally robust and operates well in a wide range of pH values, providing resistance to corrosion and prolonging the lifespan of the boiler.

Every XtraTechTM heat exchanger also benefits from an improved condensing surface and increased hydraulic performance, which combine to provide a better transfer of heat. Plus, it has been independently certified for safety, quality and usability by renowned European technical testing organisation TÜV Rheinland, offering reassurance to installers and end users alike.

Ease of installation

Lightweight and straightforward to install, with easy frontal access to all components and more room inside the casing, the new boilers have been designed to aid with commissioning, servicing and repair. The chassis is strong and durable, with no sharp edges, while installation is further aided by simple-fit connections, wiring and flue. Plus, not only are the new units fully compatible with the current range of accessories, they also have all connections in the same places – enabling an easy retrofit in place of an existing Ariston boiler.

Fitting controls is made even more straightforward, thanks to a unique colour coding system, which matches parts to a corresponding slot. All major components are also Ariston branded to highlight their authenticity and provide complete confidence in quality.

Enhanced controllabity

ONE Series boilers are fully compatible with the Ariston NET smart heating control, while BusBridgeNet® technology allows communication with other Ariston products. This simplifies integration with a range of devices and heat sources, optimising energy consumption. The remote diagnostic capabilities of Ariston NET also ensure any faults are identified immediately, followed by precise remedial advice.

A brand new suite of controls has also been introduced to allow quick and easy access to Ariston NET. Both the Cube S NET Wi-Fi thermostat and Cube room sensor boast many advanced functions, including energy management, internet weather monitoring and a weekly scheduler programme, as well as holiday and override modes. Thanks to wired and wireless zone management kits, it is also possible to manage up to six heating zones with these controls,

In addition to these controls, all ONE Series boilers include a built-in ‘AUTO’ function, which monitors the ideal temperature for the heating system. This reduces peaks and fluctuations in flow temperature, ensuring the boiler consumes less gas and electricity, while avoiding on/off cycles.

Ariston’s ONE Series range of boilers and accompanying suite of controls will be available from UK merchants and stockists nationwide from 1st November 2017. E-Combi One boilers will have a 2-year warranty, Clas ONE models an 8-year warranty and the Clas Net ONE will benefit from a 12-year warranty.

Installers keen to learn more about the features and benefits of the new products can discover more at

Rinnai has launched new products into the commercial gas-fired boiler marketplace with an initial introduction of three condensing models.

The new boilers, German-manufactured to high specification in materials, build and components are built to last and offer high quality construction and engineering alongside top of the range energy efficiencies.

The Rinnai Infinity condensing boiler range is available for natural gas and LPG operation and comes with innovative controls maximizing energy efficiencies through class-leading weather compensation technology.

The Infinity boiler is A rated under the ErP directive, meaning customers can make an informed decision when purchasing.

The Rinnai Infinity condensing boilers come in 50kW, 75kW and 100kW versions and are both maintenance and installer friendly. The appliances are accessed from the front and require minimal space for installation, thus helping to reduce cost and time required on site. Some of the units also feature a fully removable pivoting heat exchanger and burner for easy inspection and cleaning.

New combustion control technology also imbues the units with the capability to self-calibrate so avoiding manual setting and automatically adapts to suit the gas quality.

The boilers also offer a range of ancillary options including pressurisation units, manifold pipework assemblies, mounting frames, heating system separators, boiler and water heater combination packs, ancillary control options, external temperature sensor
and advanced boiler controls.

The 50kW, 75kW and 100kW versions all have an efficiency of 93%. The CGB-50 measures 855mm x 440mm x 393mm, while the CGB-75 and CGB-100 both present at 1020mm x 565mm x 548mm.

For more details on RINNAI products visit

Leading British Manufacturer Keston Boilers has supplied three 55kW Heat Only twin flue boilers and a Frame and Header Kit to Lancing College in Lancing, West Sussex, which have been installed as part of a refurbishment project to improve the reliability of the heating system in one of the accommodation blocks and reduce overall running costs.

Lancing College is an independent boarding and day school, providing education for boys and girls aged 13-18 years. The boilers have been installed in Gibbs House, an accommodation block providing boarding facilities for 650 boys. Like all the buildings at Lancing College, Gibbs House is over 170 years old and the old heating system had previously been served by a central boiler room located in the main building over 50 metres away. The old boilers were not only unreliable and less energy efficient, but the long external pipe run resulted in excessive heat loss, as did the five inch cast iron pipework delivering the hot water to the radiators in the building, all of which contributed to high fuel bills.

The new Heat Only Boilers were installed on Keston’s Frame and Header Kit, which was delivered in prefabricated modules that were then quickly and easily assembled on site by Chris Smith, Heating Engineer. The system was installed in a new plant room within the building, eradicating the need for a long pipe run, and serves 60 radiators. Around 200 yards of new 67mm copper piping runs along four foot high tunnels located throughout the building, ensuring they are out of sight and retain the character of the school.

There are around 30 Keston boilers installed throughout Lancing College and this installation was the first that utilised the new range of Keston boilers, which were launched in 2013. Chris Smith commented, “The Keston Heat Only boilers were very straightforward to install, especially with the Frame and Header kit as supplied by Keston. They have been running perfectly since their installation and the increased energy efficiency has meant a large reduction in running costs for the school.” He added, “The flexible flueing options offered by Keston twin flue boilers were perfect for our needs, as they allow us to hide the flues so they do not affect the character of the buildings by emerging from the original flintwork.”

The Keston Heat Only condensing boiler range includes 45kW and 55kW outputs and it is the only dedicated boiler on the market for domestic or light commercial applications that combines twin flue capabilities with a fully modulating Energy related Products (ErP) approved pump built into the framework of the appliance. Continuing to make boiler efficiency easy for customer and installer alike, the Keston Heat-Only range is also supplied with integrated weather compensation and an outside sensor as standard. Weather compensation is instantly activated when the outside sensor is installed, creating a simple ‘plug and play’ solution with no intricate programming required.

Keston’s boiler range for both domestic and light commercial applications, manufactured in Britain and launched in 2013, includes system, combi and heat-only boilers, all of which incorporate market-leading twin flue capabilities that are highly adaptable, offering the perfect solution for awkward installations. All boilers in the range offer a high SEDBUK efficiency rating, are Energy Saving Trust endorsed and also feature on the Energy Technology List (ETL), qualifying them for inclusion in the Government’s Enhanced Capital Allowance (ECA) scheme.

For more information on Keston’s condensing boiler ranges, visit, email or call 01482 443005.

Rinnai, designer and manufacturer of the Infinity range of continuous flow gas fired water heaters, welcomes the implementation of the Energy Labelling Directive on 26 September as it scores ‘A’ ratings on all its water heaters.

“Energy labelling of product offers transparency to specifiers and end users who will now have a clear guide for choosing the most efficient units available,” said Chris Goggin, Associate Director of Rinnai UK.

“Rinnai brings to market the most extensive range of ‘A’ rated appliances with load profiles ranging from small domestic models to XXL sized industrial units,” said Goggin.

“The ‘A’ rating applies to when a unit is in use – i.e. when fuel is being used, and as an ‘A’ rated Rinnai unit only uses fuel when water is being drawn the energy label crystallises our reputation for efficiency, as continuous flow water heaters suffer no standing losses with storage counterparts”.

When Rinnai water heaters are paired with solar thermal and the latest intelligent controls are used for ultimate heat recovery, even higher efficiencies can be achieved, he added.

Rinnai is also set up to offer installers expert help with system labelling. Installers will be responsible for creating the labels for those installations that combine a water heater with renewables, for example.

On 26 September 2015 The Energy Related Products (ERP) Directive, incorporating Ecodesign and Energy Labelling Directives for water heaters (Lot 2) come into force, meaning that water-heating products sold in the UK will need to meet minimum energy performance criteria in order to be legally placed on the market, and will require an energy label.

For more information on the RINNAI product range visit