The Smartest Eco Home Investment
Jun 15, 2026 · 33 min · 9 segments
When people think about building an energy-efficient home, they usually focus on heat pumps, solar panels and insulation. But there’s one part of the process that often gets overlooked: ventilation…
When people think about building an energy-efficient home, they usually focus on heat pumps, solar panels and insulation. But there’s one part of the process that often gets overlooked: ventilation. In this episode of the Self Builders Podcast, Jack sits down with Mandip from Solarcrest to break down why modern airtight homes need properly designed ventilation systems, what MVHR (Mechanical Ventilation with Heat Recovery) actually does, and why “build tight, ventilate right” has become such an important principle in modern self build design. The conversation explores how ventilation impacts everything from comfort and running costs to condensation, mould, air quality and long-term building performance. Mandip also explains why so many self builders leave ventilation decisions too late, and the expensive consequences that can create later in the build. This episode covers: - What MVHR actually is in simple terms - Why modern homes need ventilation systems - The relationship between airtightness and energy efficiency - Why ventilation should be planned early - Common mistakes self builders make - The hidden costs of retrofitting systems later - Why not all MVHR systems are equal - The importance of fabric-first design - Heat pumps, insulation and whole-home performance - How to create a healthier, lower-running-cost home You can find out more about Solarcrest here: https://solarcrest.co.uk/ PLUS, Solarcrest are one of the expert businesses that contribute to Mayflowers' Self-Build Savers Solution, meaning you get a discount with them, when you work with us. 📞 Book a call with Mayflower Mortgage here: https://www.mayflowermortgage.co.uk/booking 📘 Download our FREE Self-Build Resources: https://www.mayflowermortgage.co.uk/free-self-build-resources #SelfBuild #SelfBuildMortgage #SelfBuildUK #SelfBuildProject The views and information discussed in this video/podcast are intended for general informational purposes and do not constitute regulated mortgage or financial advice. Mortgage recommendations depend on a full assessment of an individual’s needs, objectives, and financial situation. Before making any decisions, please ensure you obtain personalised advice from a suitably qualified and authorised mortgage adviser.
When people think about building an energy-efficient home, they usually focus on heat pumps, solar panels and insulation. But there’s one part of the process that often gets overlooked: ventilation…
