BetaTalk - The Renewable Energy and Low Carbon Heating Podcast

Send us a textExpanding Horizons: BetaTalk's New Newsletter and Website!We're thrilled to announce that BetaTalk is growing! In addition to our regular podcast episodes, we're launching a brand new newsletter and an associated website. This expansion will allow us to bring you even more in-depth content, industry news, and valuable insights into the world of heat pumps and sustainable building.Our newsletter, launching shortly, will be your go-to source for the latest industry developments, insightful opinion pieces from the third sector, and crucially, real-world heat pump case studies from experienced engineers in the Guild of Master Heat Engineers. This is an exciting step in our mission to inform and empower.As Chris Stark, former CEO of the Climate Change Committee, remarked about this new venture: "Nathan is one of the UK’s clean heat leaders, so I always watch him closely. This collaborative media venture is an exciting next step. We need positive voices like Nathan’s to help broaden knowledge around retrofit and heat pump installations."Don't miss out! Be among the first to receive our new newsletter and stay ahead of the curve:Sign up now for exclusive content and updates!Episode Notes:Welcome back to BetaTalk! In this fascinating episode, we delve deep into the world of air-to-air (A2A) heat pump systems for domestic properties. We were incredibly fortunate to be joined by two distinguished guests: Es Tresidder, a consultant specialising in Passivhaus design and low-carbon building design optimisation, and Michael Cosham, a seasoned HVAC engineer with 47 years of invaluable experience.Our conversation began by exploring air-to-air systems in general, including Michael's personal experience building an A2A system for his first home on Canvey Island. Es then shared insights into the A2A system installed in his own highly efficient home, providing a real-world perspective on their performance.We thoroughly discussed the numerous advantages of A2A systems in domestic properties, highlighting their efficiency and effectiveness. We also touched upon some perceived disadvantages, but as our conversation unfolded, it became clear that many of these concerns, such as fan speeds, comfort, noise, and even dry skin issues, may be simple to resolve with proper system setup and design. Indeed, with the right configuration, these issues may not even exist. For more on this, and avoiding potential pitfalls, Es has provided these insightful articles:About overheating in low-energy buildings: https://www.highlandpassive.com/do-low-energy-buildings-have-an-overheating-problem/Understanding thermal comfort: https://www.highlandpassive.com/why-do-i-feel-chilly/A key takeaway from this episode was the remarkably low cost of A2A heat pumps, making them an increasingly attractive and accessible option for homeowners looking to embrace sustainable heating solutions.Join us for a truly enlightening discussion that challenges preconceptions and sheds light on the true potential of air-to-air heat pump technology.Support the showLearn more about heat pump heating by followingNathan on Linkedin, Twitter and BlueSky

Send us a textRhiannon and Nathan discuss the recent Installer Show 2025 at Birmingham NEC, covering current trends within the heating industry, including issues related to training.This season is sponsored by Intergas Support the showLearn more about heat pump heating by followingNathan on Linkedin, Twitter and BlueSky

Send us a textIn this episode Nathan chats to his friend Ian Edgeworth, author of the recent books "Wellcome to the Wonderful world of Air source Heat Pumps - What Kept You"  and "The Pocket Guide to Low Temperature Central Heating" You can find the books at New Perspectives.ComListen to Ian's journey into teaching and what he and Nathan think of the current situation regarding heat pump training.This season is being sponsored by Intergas who make the quality xylinder - a heat pump cylinderSupport the showLearn more about heat pump heating by followingNathan on Linkedin, Twitter and BlueSky

Send us a textThe latest episode of BetaTalk dives deep into a topic of critical importance for the future of skilled trades and green technology: the intricate world of Vocational Training Qualifications (VTQs) and how they stack up against General Qualifications (GQs).Host Nathan Gambling, always at the forefront of heating and skills discussions, explores a key differentiator in VTQs: the expectation that ALL learning outcomes must be truly mastered for a qualification to be awarded. This isn't just about passing an exam; it's about demonstrating genuine competence.What makes this particularly "interesting," as Nathan highlights, is the unique assessment model. Unlike GQs, the assessment for VTQs is largely devolved to the training centre, rather than solely residing with the awarding organisation (AO). However, here's the kicker: the AO remains fully responsible and accountable for the quality and integrity of the qualification itself.This creates a fascinating dynamic. On one hand, it makes it incredibly straightforward to independently assess whether individuals have genuinely mastered every single learning outcome. If something's amiss, it's very easy to trace accountability back to the awarding organisation.This conversation takes on even greater significance when we consider the millions of taxpayer pounds currently funding crucial qualifications, such as those for heat pump installations. With significant public investment, ensuring that these qualifications genuinely produce competent professionals is paramount.Tune in to the latest BetaTalk episode to understand the implications of this assessment model, the responsibilities of AOs, and why robust VTQs are essential for building a skilled workforce, especially in vital sectors like renewable heating.This season is sponsored by IntergasSupport the showLearn more about heat pump heating by followingNathan on Linkedin, Twitter and BlueSky

This discussion reveals an innovative approach to heat recovery that captures waste heat from refrigeration to produce hot water, significantly boosting energy efficiency. Hear intriguing examples from food processing facilities, gyms, and even bakeries that showcase the potential of this technology. The hosts tackle challenges in adoption and the importance of education in the sector. They explore how advancements like ammonia and CO2 refrigerants are revolutionizing heating and cooling systems, making a compelling case for sustainability in various industries.

Send us a textJoin Nathan's guests David & Rob from Fornax and dive into the nitty-gritty of the Boiler Upgrade Scheme (BUS) consultation and explore how third-party finance could be the key to unlocking widespread domestic heat pump adoption. We'll break down the "finance gap challenge," look at what makes third-party ownership work, and dissect the pros and cons of different financing models.In this episode, we discuss:The Finance Gap Challenge: Why current BUS grants alone aren't enough for mass market adoption and how existing loan products fall short for consumers and installers.The Power of Third-Party Ownership: How it dramatically increases heat pump installations by offering: Superior consumer protection: If the system fails, customers stop paying, and the financer is responsible for resolution.Risk alignment: Financiers are incentivized to ensure proper installation and ongoing performance.Better affordability and accessibility: Eliminates large upfront capital requirements.Support for installer businesses: Creates sustainable, predictable maintenance income.What Works: Consumer Hire vs. What Doesn't:Consumer Hire agreements: The only commercially viable third-party ownership model under UK regulation. Subject to robust FCA Consumer Duty protections—not "lightly regulated."Consumers have clear and simple mechanisms to keep their system; providers don't want them back!Why Hire Purchase models are problematic: Despite being highlighted in the consultation, they remain commercially unworkable due to existing financial regulations.Consumer Protection Reality Check:Consumer preference surveys don't equal deliverable products—regulatory constraints matter.Consumer protection isn't free: Every additional measure either limits access to affordable heat pumps or makes them more expensive/unworkable. Duplicative measures unfairly penalize consumers.Repossession rights are fundamental to risk pricing; removing them increases costs for all consumers (e.g., mortgages).Maximum term limits would reduce affordability and increase financial exclusion.Many proposed duplicative requirements (e.g., Ofgem doing things the FCA already does) deter small businesses and hinder independent installers.Innovation vs. Prescription Risk:Over-prescription risks stifling innovation just as the market gains momentum.Standard contract requirements could recreate past failures like the Green Deal/Green Homes Grant.THIS SEASON IS BEING SPONSORED BY INTERGAS Support the showLearn more about heat pump heating by followingNathan on Linkedin, Twitter and BlueSky

Send us a textJoin us for a fascinating conversation with Mike Costain, the Managing Director of The Installer Show! In this special episode, we pull back the curtain on the UK's leading event for heating and plumbing professionals, exploring what's new, what's next, and how the show is expanding its horizons internationally.But that's not all! Mike also shares his invaluable personal experience as a homeowner, detailing the installation and performance of his own heat pump system. He opens up about the common misconceptions and knowledge gaps within the building industry that can hinder heat pump adoption, particularly among builders who may not fully grasp their efficacy.Crucially, you'll hear about the unique connection to this installation, as our very own host Nathan had the pleasure of arranging the engineer for Mike's heat pump installation. We delve into the journey from initial curiosity to a fully operational, energy-efficient home heating solution.Looking ahead to this year's Installer Show, Nathan will be at the forefront of innovation, helping to run The Installer Show's groundbreaking AI platform – a first-of-its-kind initiative for the event. Mike also offers exclusive insights into the exciting developments at the show and its ambitious plans for international expansion.In this episode, you'll discover:Behind the Scenes at The Installer Show: What's new, what's hot, and what to expect from the UK's premier heating and plumbing event.The MD's Personal Heat Pump Journey: Mike shares firsthand insights into living with a heat pump system, its benefits, and any surprises along the way.Tackling the Knowledge Gap: A candid discussion on how a lack of understanding among builders about heat pump functionality can impede installations.The Inside Story of Mike's Install: Hear how our host played a direct role in connecting Mike with the skilled engineer for his heat pump installation.Revolutionising the Show: Our host's role in pioneering The Installer Show's never-before-seen AI platform.The Installer Show Goes Global: Mike's vision for the show's international expansion and what that means for the industry.This season is being sponsored by IntergasSupport the showLearn more about heat pump heating by followingNathan on Linkedin, Twitter and BlueSky

Send us a textIn the fourth episode of the Heat Pump Ready special bulletin series, Nathan talks to three Heat Pump Ready projects to discuss the topic of ‘Improving the customer journey’. Nathan is joined by Jack Jarvis from EDF, Gareth Robertson from Thermly and Lucy Fairchild from Oxford City Council to discuss.Support the showLearn more about heat pump heating by followingNathan on Linkedin, Twitter and BlueSky

Send us a textIn this episode, Nathan invites Mick Wall, his 'expert consumer,' back to have a discussion with the lads from Havenwise, a company dedicated to helping with quality heat pump installations. Havenwise runs an API which optimizes the weather curves on the heat pump, as well as looking at time-of-use tariffs. You can choose to use various functionalities. For example, Mick only uses the optimizer for his space heating. Nathan likes what Henri and Alex at Havenwise are trying to achieve. Take a listen...it's a very enjoyable one!This season is being sponsored by Intergas Heating Solutions. Support the showLearn more about heat pump heating by followingNathan on Linkedin, Twitter and BlueSky

Send us a textJoin host Nathan Gambling as he journeys to Intergas HQ alongside legendary heat pump engineer Steve Webster to get the inside scoop on their high-quality stainless steel hot water cylinders, specifically designed for heat pump systems. Steve shares his firsthand experience testing these cylinders on recent installations, highlighting their exceptional build quality and resilience during transportation – a welcome change from the damage often encountered with other brands.In this insightful episode, Nathan, Steve, and Intergas's Dave Hall delve into:The Intergas Manufacturing Process: Get a behind-the-scenes look at how these robust stainless steel cylinders are crafted, emphasising the quality and attention to detail that sets them apart.Unboxing Success Stories: Steve recounts his positive experiences with the cylinders arriving on site in perfect condition, a significant advantage for installers.Heat Pump Industry Evolution: Dave and Steve, both early pioneers in UK domestic heat pump systems, share their perspectives on the significant changes and advancements they've witnessed over the years.Anti-Freeze Valves: A discussion on the necessity of anti-freeze valves in heat pump installations.Future of the BUS Scheme & A2A Systems: Thought-provoking discussion around the potential inclusion of Air-to-Air (A2A) systems in the Boiler Upgrade Scheme (BUS) and the concerns about a potential influx of low-quality, mass installations.Key Takeaways:Intergas's stainless steel cylinders offer superior build quality and are designed to withstand the demands of heat pump systems.Reliable delivery and undamaged products on site save time and hassle for installers.The heat pump industry has evolved significantly, and understanding the nuances of system design and regulations is crucial.The potential inclusion of A2A in the BUS raises questions about installation quality and long-term efficiency.Support the showLearn more about heat pump heating by followingNathan on Linkedin, Twitter and BlueSky