David Hall | Hybrid Heat Pumps for Retrofit & Fuel Poverty Relief | Net Zero Scotland Conference

David Hall, Business Development Director at Intergas Heating, introduces a powerful and pragmatic retrofit heating solution — the Extend Hybrid System — at the 2025 Net Zero Scotland Projects Conference. Hall outlines how combining existing boilers with heat pumps can provide immediate carbon savings, solve fuel poverty, and work for even the hardest-to-heat homes. 🏘️🔥

💡 Key Topics Covered:
• Intergas is a Dutch-owned brand under RE, with global reach in sustainable hot water and heating
• Heat pumps are essential for net zero, but insulation challenges persist in older homes
• Intergas’s hybrid solution allows use of existing boilers alongside a 5kW heat pump
• System intelligently switches between heat pump and boiler based on temperature (e.g. below -2°C)
• Extend hybrid system can be installed with minimal disruption and pipework changes

📱 Tech and User Experience:
• Smartphone QR setup: scan to download and configure the unit
• System noise only 34 dB — quieter than a refrigerator
• Especially suited for dense housing estates and social housing projects
• Comes with remote monitoring and smart thermostat via service dashboard

🔧 Key Features & Applications:
• Retrofit-friendly: works in listed properties where windows can’t be changed
• Handles distances up to 25 metres between units
• Improves insulation compatibility for heritage or older buildings
• Saves up to 82.5% in gas usage and drastically cuts carbon footprint
• Can optimise energy usage based on lowest tariff windows

📌 Main Takeaway:
Hybrid systems like Intergas Extend provide a realistic, scalable, and cost-effective path toward decarbonising homes — especially when full heat pump installation isn’t feasible.

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📺 Watch Key Moments:
• 00:36: Intro to Intergas and RE group
• 01:06: Heat pumps and Scotland’s insulation problem
• 01:39: How hybrid system works – Extend explained
• 02:12: Heat pump + boiler logic and usage
• 02:43: Simple smartphone setup via QR code
• 03:16: Ultra-low noise and dense housing suitability
• 03:49: Remote dashboard control and smart stat
• 04:22: Works with existing pipework, cuts emissions
• 04:55: Flexible installations — up to 25m range
• 05:28: Heritage home case study on Stornoway
• 06:29: Gas and carbon savings in hybrid systems
• 07:02: Final energy savings & install benefit summary

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