New fresh look for Rytons website

New fresh look for Rytons website

Rytons WebsiteRytons Building Products is pleased to announce the launch of a fresh new look for their Rytons website Featuring specially commissioned images throughout, the website is lighter, brighter and has simplified menus for even easier navigation.

Fully responsive for desktop, tablet and mobile, is a hub of information. Without registration or log-in technical data sheets, product guides, NBS Plus specifications and BRE acoustic test reports are available immediately as required.

Knowing that the industry is not 9 to 5 Rytons ventilation calculators are also freely accessible on their website. There are five calculators covering stoves, open-fires, gas appliances, sub-floors and background room ventilation. Available anytime and anywhere they’re great for planning in the evenings and at weekends and being mobile friendly can also be used when out and about.

When standard ventilation just doesn’t fit the bill take a look at the tailor-made by Rytons page. As experts in bespoke ventilation this page details the services available and showcases just some of the tailor-made items Rytons has already produced.

Take a look around Rytons fresh new website today – visit

For latest industry news check out the HETAS News pages.

Technical Q&A

Technical Q and A

CAT InviteIn association with The Centre for Alternative Technology (CAT), HETAS will be holding an installer technical question and answer session on the 16th August.

The technical Q and A session will take place on Thursday 16th August from 4:30pm to 7pm and will provide you with the opportunity to pose your burning questions to HETAS Training and Technical Manager Mike Harvey. From the new HETAS Unsafe Situations Procedure, misleading headlines on banning stoves through to your technical installation questions, Mike will be able to answer your questions.

The event is free to attend and there is no need to book in advance. For further details contact the CAT team directly on 01654 704963.

The event will also provide you with an opportunity to view the facilities available at this unique location.


Based in beautiful Mid Wales, the Centre overlooks the Snowdonia National Park, renowned for its stunning scenery and outdoor activities.

CAT is an education and visitor centre demonstrating practical solutions for sustainability. We cover all aspects of green living: environmental building, eco-sanitation, woodland management, renewable energy, energy efficiency and organic growing.  The site is a unique and valuable practical demonstration centre, a living laboratory with an enormous range of live examples of sustainable solutions. CAT has the largest range of installed renewable systems anywhere. These include:

  • Photovoltaics
  • Solar thermal
  • A micro-grid
  • Off-grid and grid-connected systems
  • Biomass combined heat and power (CHP)
  • Hydro
  • Air source heat pumps
  • A community heat main
  • A range of small to medium wind turbines
  • They also have two reed bed systems, our own off-mains water supply, and extensive organic gardens.

Click here to visit the CAT website.

Installation Sub Committee

Installation Sub Committee Formation

Installation Sub CommitteeThe HETAS Installation Sub-Committee (HISC) has been formulated as a mirror group to the HETAS Technical Committee (HTC), to allow for the discussion, evaluation and progression of installation specific technical issues, challenges and projects, and to help form resolutions, as well as increase communication and support between HETAS and its registered installers, retailers, maintenance engineers and chimney sweeps.

The HISC aims and objectives are to always promote the safe design, installation and use of solid fuel and biomass appliances through;

  • Discussion and development of resolutions to common installation issues experienced through industry stakeholder activity and allow HETAS to best target its resources
  • Undertake a more focused discussion on installation specific activities and develop better means to allow industry to carry out installation works safely and competently.
  • Continue to update members on current and any future changes to legislations which may impact industry and ensure members’ voice is heard.
  • Use meeting outcomes to influence future standards, consultations and regulation development, ensuring installers can carry out works in both a safe and realistic matter with today’s most up-to-date and verified installation methods
  • Feed meeting discussions into the wider HTC format amongst Appliance & Chimney Manufacturers, Test Houses and Fuel Producers
  • Use meeting to drive consumer awareness and education so that one standardised position is relayed and attainable

The group encompasses input from a wide variety of industry expertise from its stakeholder base, ensuring an open forum of discussion can be had, to continually promote industry activity and to support HETAS in providing effective guidance and clarification back to its stakeholders undertaking solid fuel installation works.

HETAS is always looking to continually work with, and better engage with its membership to promote effective change of the industry and its practices, and the HISC forms an integral part of this pushing for better quality standards and regulations, as well as being seen to be offering a more secure and safe route to meeting current and future Building Regulation compliance for its membership.

Sune Nightingale of Firepower Heating, who attended the first meeting comments: “It was a really productive first meeting. For me the most important thing was that we clearly saw that we needed to connect better with you, the installers on the ground. After all you are the ones who have to use the guidance which HETAS and the Technical Committee (the HTC) come up, you are the ones who see new issues as they crop up first, you are the ones that know whether a system is workable or not. We also thought it would be a good opportunity for you to get to know the people who make up HETAS and the things that they do.

“As far as I am concerned I take part in these committees to try to improve safety and at the same time keep things practical and doable. The other members are experts in their fields and so it is a pleasure and an honour to be part of them. Did you know that the members donate their time? We do get lunch and coffee.

“Over the coming months you should see HETAS start the ongoing conversation with you to invite feedback and suggestions. I will also be reaching out to the installers and engineers that we work with. It will of course take time, but I hope that you start to notice a difference in the general approach. Our industry is changing fast and faces new challenges: tightened legislation, new standards, EcoDesign, we have work to do to improve on emissions and we have to keep pace with new building methods. It’s a time where we very much need to be working together.”

Follow the HETAS newsletters for further updates from HETAS and the Installation Sub-Committee. Head over to the HETAS Technical Area to view all of our newsletters and Bulletins.

HUSP goes live

HUSP goes live

HUSP goes liveOver recent months, HETAS has been looking at the ways in which it can support its stakeholders further when identifying installations that may pose a significant risk to either the properties occupants or ongoing fire safety of the buildings structure and we are pleased to announce that HUSP has now gone live.

 Calvin May, Technical Standards Manager at HETAS introduces the new HETAS Unsafe Situations Procedure (HUSP) to aid identification of risks with a re-commissioning checklist.

What is HUSP?

 The HETAS warning label process is currently available to identify scenarios that pose an immediate risk, however there are certain circumstances whereby the installation does not follow the current Building Regulation guidelines or will pose a significant risk under continued use of the appliance that requires a further assessment and decision on what protocol to follow.

With this in mind, HETAS has gone on to develop an industry recognised “Unsafe Situations Procedure”, to formulate a new process in which to identify all areas of potential risk within an installation following UK Building Regulation guidelines and requirements of UK applicable standards.

The procedure will allow for the engineer to identify and take the appropriate action where required to negate the area of risk and appropriately report their findings to either relay to the consumer or evidence as a means of carrying out further remedial works. As with most assessments, the procedure works on the basis of using the engineer’s competence, experience and training to identify potentially hazardous scenarios, however provides effective tools in which to make judgement and evidence the reasoning behind these judgements, and to record with written consent from the consumer.

HUSP encourages an appropriate assessment to be made in all cases, and appropriate action to be taken defined against three classification categories:

  • Assessed Risk Low – typically categorised as those installations that have installation techniques that fall outside the current scope of Building Regulation guidelines and relevant standards, however can be seen to have been working correctly without risk for a number of years.
  • Assessed Risk High – installations that at the current time of assessment have been assessed and deemed to contain risk but not immediate risk. However continued use of the appliance over time will result in danger to the occupants and/or the property.
  • Immediately Dangerous – as written within the current Warning Label process, a dangerous appliance or installation which poses an immediate danger to the occupant of the property at the time of assessment.

To aid installers further, the procedure provides some additional guidance of some of the more common installation scenarios, as well as a guided risk category score in which to make judgement against, and will be continually developed as new situations and innovation advances over time.

HUSP Guidance

What does the assessment cover?

The assessment covers the 5 main areas of the Building Regulations J1 to J5, including ventilation, dispersion of products, CO activation and protection of building, as well as some of the caveats contained within BSI installation standards BS8303 and BS EN 15287-1. The assessment will also need to consider the characteristics of the property and whether any energy efficiency changes have been made over the years (improved insulation, cavity wall, and draught excluders), so communication with the consumer, visual checks and appropriate testing are essential to formulate the required point of action.

The assessment form available is a simplified reference point on what to look out for when at the property in compliance with Building Regulation guidelines, as well as the appropriate re-commissioning checks to carry out and signed declaration of the results. All installations would need to be left in safe circumstances through confirmation of the appropriate smoke test, flue draught extraction tests and spillage tests, all guidance of which to perform and carry out this testing is contained within the electronically supplied document.

Appropriate Action

HETAS will continue to make its warning label available, which can be attached to the appliance should any situations be found to contain risk of an immediate nature, advising the consumer not to operate the appliance further until required remedial works have been undertaken. The form will now contain details of the assessment undertaken, defects identified and outcomes in which to discuss with the consumer to ensure an understanding of what needs rectifying is discussed and agreed.

Further Information

Further information and supporting documentation as always can be found in the Technical Area of the HETAS website, or call the HETAS technical helpline on 01684 278194 (please have your HETAS Registration number to hand).


Ban on wood stoves? The truth of it all

Ban on wood stoves? The truth of it all

Ban on wood stovesNo doubt you will have all seen some misleading headlines in recent months about a possible ban on wood stoves. Here, we identify the truth behind the headlines and what you can tell customers who might have seen the headlines.

On the 22nd May the Environment Secretary Michael Gove published a Clean Air Strategy which aims to cut air pollution and save lives, backed up through new primary legislation. What does the strategy say and how will it impact you and your customers?

The new strategy, which is out for consultation until the 14th August, is a key part of Defra’s 25 Year Plan to leave our environment in a better state than we found it. HETAS, Woodsure and The Stove Industry Alliance have all been consulting with Defra for some time now and once again Defra has clarified they are not looking to implement a ban on wood stoves.

No ban on wood stoves | The key points

The strategy summarises actions to reduce emissions from domestic burning, clearly identifying there is no intention to ban wood burning stoves. Here are the key points:

  1. Legislate to prohibit sale of the most polluting fuels.
  2. Ensure that only the cleanest stoves are available for sale by 2022.
  3. Give new powers to local authorities to take action in areas of high pollution, bringing legislation into the 21st century with more flexible, proportionate enforcement powers.
  4. Work with industry to identify an appropriate test standard for new solid fuels entering the market.
  5. Ensure that consumers understand what they can do to reduce their impact from burning.

The strategy also suggests Defra will give local authorities powers to go further in areas of high pollution, for example exploring what further steps government can take to enable local authorities to encourage ‘no burn days’ during high-pollution episodes.


The strategy identifies a number of voluntary initiatives that industry has undertaken to address concerns over air pollution from wood burning. These include Woodsure’s Ready to Burn, The SIA Ecodesign Ready scheme (administered by HETAS) and the Burnright campaign.

HETAS will continue to work with Defra and industry to drive forward policy and reduce air pollution from wood burning stoves. Defra would like your views on the actions being proposed to reduce air pollution and its effects, and to hear whether you have any further suggestions. Make sure you have your say at

Back in June we summarised the Clean Air Strategy in more detail. Click here to read the article.

Stay tuned to the HETAS website, newsletters and social media channels for regular updates. Click here to get in touch with the team.

Sweep Safe Signs Up

Sweep Safe Signs Up

Sweep Safe Signs UpFor a number of years HETAS has recognised three chimney sweeping associations as a route for chimney sweeps to become HETAS Approved. In June we formally welcomed a fourth association as Sweep Safe signs up with HETAS.

HETAS has a long standing relationship with three chimney sweep associations, APICS, Guild of Master Chimney Sweeps and National Association of Chimney Sweeps. Having worked with these associations we have verified their association’s processes from assessment and induction through to terms and conditions, enabling their members to become HETAS Approved Chimney Sweeps. In June HETAS welcomed a fourth association, Sweep Safe.

Sweep Safe was conceived in April 2018 as a new type of chimney sweep association for the UK and Ireland. Sweep Safe works to build a recognisable consumer brand, a powerful identity (Logo, name, colours and presence) in the market place and ensure their certified chimney sweeps are the prime beneficiary from this brand power. The association is highly digital and marketing driven, both to promote its members to consumers and promote itself in the industry. Sweep Safe requires prior experience working in the industry before acceptance of membership. For more information on Sweep Safe visit or visit the Sweep Safe website.

HETAS offer the H003 training course or the H009 training course, and attending one these courses is a pre-requisite towards registration, but not the only criteria. If you wish to become a HETAS Approved Chimney Sweep you must apply to us as a registered member of one of our nominated trade associations. Click here to find out more.

Going Direct

Going Direct

HETAS has developed a simplified technical guidance document which covers the relevant direct air assessment and commissioning procedures that installers can refer to in conjunction with any manufacturers requirements.

For self-certification of direct external air supply appliances, it is imperative that the installer understands the relevant safety provisions. Where a copy of the manufacturer installation instructions can be obtained this must be read and understood before work begins. If there is no information saying that the appliance can be used with a direct air supply and there is no air supply kit specified, HETAS recommends that the appliance is not fitted with a direct air kit. Alternative ventilation must be provided if required.


The following considerations should be taken into account:

  • Whether the manufacturers’ instructions confirm that the appliance can be safely installed in this way and the manufacturer has provided clear guidance on installing the appliance and air kit together.
  • Whether the dedicated air kit used meets the manufacturer’s requirements and the appliance is fitted in accordance with manufacturer’s instructions.
  • The installer must assess the installation and commission the appliance in accordance to manufacturer’s instructions and ensure HETAS commissioning and risk assessment guidelines are adhered to and evidenced correctly.
  • If at commissioning stage the appliance cannot be confirmed as operating safely, it should be disconnected from the chimney and placed somewhere that it can’t be used.
  • In some cases where spillage testing indicates poor flue performance, it may be that an ADJ vent is the only solution to supplying additional air for safe and correct operation. In this case the consumer should be advised of this compliance requirement and changes made to make the installation safe.

As well as manufacturer installation guidelines, it is essential that there are relevant assessments of the installation environment. These will involve assessment of the constructional attributes of the property, including any previous heat loss improvement measurements (cavity wall insulation, draft proofing etc.), as well as the current method of providing habitable and combustion ventilation, appliance type and the installation design providing efficient operation of the appliance.

Property Type

Properties built after 2008 are likely to incorporate more stringent energy efficiency measures, and as a result have more airtight construction characteristics; these will need to be factored in during any assessment of the installation. Careful consideration should therefore be taken to confirm the type of appliance selected is suitable for installation and operation under roomsealed conditions, and verified by the manufacturer as taking 100% of its air for combustion directly from outside.

Appliances verified by the manufacturer as non-roomsealed may require additional permanent ventilation in the room to ensure continued draw on the flue, especially under conditions of refuel. In these cases it is important to reference the applicable installation instruction guidance or seek further clarification from the appliance manufacturer on appropriate size and positioning of this additional ventilation requirement.

As well as constructional characteristics of the property, ventilation interference should be carefully considered, particularly in cases where mechanical and heat recovery extract systems are incorporated into the dwelling. When operated, these may cause depressurisation in the room or adjoining rooms in which the appliance is installed. Assessing these areas and carrying out appropriate spillage tests during initial light up and refuel phases allows for confirmation and sign off of the safe operation of the appliance during both extraction and non-extraction scenarios.

Installation Design

The final area of assessment is in relation to installation design. It is imperative at this stage for the installer to follow manufacturer specifications for the design of the air supply duct to the outside atmosphere, paying particular attention to the following areas:

  • Minimum diameter or cross sectional area of the external air duct
  • Maximum total length of the duct
  • Maximum number of bends permitted
  • Specification of the air inlet terminal
  • Measures to be taken to prevent the air supply becoming blocked by debris, flooding, insect habitats etc.

The area designated by the hearth dimensions is a non-combustible zone, and any material used for the duct within this area must be of a non-combustible material and not affected by heat. It is advised to only install a dedicated external air kit supplied or specified by the manufacturer of the appliance who will have taken this into account, ensuring the product can be installed in a way that is deemed compliant.

Additional Guidance

To aid installers further, HETAS have issued a Direct External Air Supply (DEAS) technical note for guidance on the installation, risk assessment and commissioning of solid fuel batch fed appliances. A copyof the document can be obtained from the HETAS Technical Area.

Get in touch

To discuss this article or any other technical related questions contact the HETAS Technical Helpline on 01684 278194.

Hearth and Home time

Hearth & Home time!

HETAS at Hearth and HomeIt’s that time of year when the HETAS team head up to Harrogate for the annual Hearth & Home exhibition. You’ll find HETAS and Woodsure in our usual position in Hall C. Come and meet the team and pick up the latest Technical Bulletin which will be hot off the press.

Hearth & Home Exhibition 2018 brings together all sectors of the hearth industry, providing an exciting environment that offers trade professionals the opportunity to network and meet each other. Visitors can expect to see industry leading demonstrations, new innovations and product launches, while exhibitors benefit from a valuable and enthusiastic audience of industry professionals.

Taking place at the Harrogate Convention Centre there are three halls of new products and services. David Spencer, exhibition director comments “The halls will be packed with the very latest the industry has to offer. Whether you are an independent retailer, installer, builder, architect, interior designer, chimney sweep, distributor or agent, a trip to Harrogate is a valuable opportunity to stay one step ahead of the competition by seeing the latest trends and ordering new product lines, exclusive exhibition deals and offers.”

HETAS is pleased to be exhibiting at Hearth & Home once again and you can catch up with the team in Hall C in our usual position. We will be supported by Amanda from Woodsure who will be discussing the Defra supported Ready to Burn initiative.

Latest Technical Bulletin

HETAS registrants can pick up the latest Technical Bulletin which will be hot off the press at the exhibition and the technical team will be on hand to talk through your technical questions. We will also be discussing the recently announced Clean Air Strategy and what this means for our industry.

Don’t forget to bring along their ID cards for a chance to win in our registrant raffle. We’ve been picking up prizes from across the industry, but you must have your ID card available to enter!

Find out more

Doors to the exhibition open on Sunday 10th June at 10am. For more details visit

Click here to sign up for free tickets.


Finding the right insurance for you

Finding the right insurance for you

Finding the right insurance for youHETAS Insurance regularly review the products we offer to ensure the polices we arrange continue to meet your needs. We are delighted to tell you that with effect from renewal all existing policies will be transferred to our new policy provided by RSA.

This new policy contains a number of changes that are focused around our desire to continually enhance the cover provided as well as reducing the administration burden on you.

Benefits include:

Cover for broader business descriptions.

The new product can accommodate much broader business activities and there is no longer a requirement that solid fuel installations make up 50% of your work. The product accommodates trades such as plumbing, gas work, and structural building work. This means that if you are a new HETAS member with an existing trade and are diversifying into solid fuel installations you can arrange cover via this policy. Existing HETAS registrants that are looking to expand into additional trades can also be covered under this policy.

More flexible package

The RSA product is made up of optional covers meaning it can be more easily tailored to your individual needs.

Depending on your individual circumstances this could result in a premium saving as you only pay for the cover you need.

Simplified approach to work at height.

Work at height can now be covered as standard up to ten metres with flexibility to cover work at greater height.

No more lengthy height work questions.

Reduced escape of water excess

Escape of water excess is £250 even if wet works are undertaken (plumbing etc.)

Competitive prices

Insurers set their prices based on the level of risk they believe a particular sector is exposed too. We are confident that RSA’s understanding of the sector will result in competitive prices for HETAS members.

The updated policy is available for all existing customers with effect from renewal. For more information please get in touch with your HETAS Insurance team.



HETAS Insurance Services is a trading name of Jelf Insurance Brokers Ltd, which is authorised and regulated by the Financial Conduct Authority (FCA). Not all products and services offered are regulated by the FCA.  Registered in England and Wales number 0837227. Registered Office: Hillside Court, Bowling Hill, Chipping Sodbury, BS37 6JX. FP18.221


Maincor gets Listed

Maincor gets Listed

Maincor Gets ListedMaincor is pleased to introduce their HETAS Listed range of pre-insulated pipes. The range includes both heating (PexFlextra) and hot water (SaniFlextra) pipe solutions

Established in 2007 as Maincor Ltd and based in Lutterworth, Leicestershire, they supply customers throughout the UK, Ireland and Channel Islands.

Maincor is an independent UK company, part of the wider Maincor family based in Germany who manufacture and supply pipe systems for plumbing, heating, underfloor heating, as well as specialist pipe products for boiler and white goods manufacturers. Visit to find out more about Maincor.

The heating (PexFlextra) and hot water (SaniFlextra) pipe solutions are ideal for connecting buildings to external renewable heat sources such as biomass boilers and heat pumps. The extremely low heat loss of both types of Flextra pipe means that the hot water or heating water can be supplied into the buildings from the heat source, maintaining the water temperature and ensuring a high level of energy efficiency and money saving on running costs.

Pipe is available in single or twin internal pipe configurations. The corrugated outer casing has a built-in anti-aging diffusion barrier (EVOH) to maintain the heat retention efficiency of the Flextra Pipe system throughout the entire service life.

Click here to view the Flextra Pipe system in the HETAS Guide.

Click here to get in touch with Maincor directly.