DIY Fix for Underfloor Heating Dead Zones

TOPDON Thermal Imaging Cameras ▶ https://amzn.to/4i9pkji Ask us a question ▶ https://skill-builder.uk/send _____________________________ Guide: Fixing Dead Zones in Underfloor Heating This guide provides a step-by-step approach to diagnosing and resolving dead zones in an underfloor heating system. Step 1: Identifying the Problem To detect cold spots in your underfloor heating system, walk barefoot over the flooring to sense any uneven warmth. For a more precise identification, use a thermal imaging camera, such as a plug-in device for phones, to map the pipe temperatures visually. Step 2: Diagnosing Airlocks Airlocks often cause inconsistent heating in one or more circuits. These issues are more likely to occur in systems with manifolds installed at uneven levels. To prevent airlocks, position the manifold higher than the underfloor circuits if possible, and ensure the system is vented properly during installation. Step 3: Flushing the System Locate the manifold valves to prepare for flushing. The fill valve, usually at the top, introduces water, while the drain valve at the bottom expels air or debris. Attach a garden hose to the fill valve for high-pressure water input and a drain hose to the bottom valve to flush out debris. One at a time, flush each circuit to clear any airlocks or sediment. Step 4: Using Boiler Pressure Open the boiler's fill valve to pressurize the system as an efficient alternative to using hoses. Close off all circuits except one, and let the water flow through that circuit. Repeat the process for all circuits to ensure they are completely debris-free. Step 5: Adjusting Flow Rates After flushing, restore balance in your heating system by resetting the flow rates for each circuit. Consult your recorded flow rate settings and adjust the valves to achieve a consistent flow rate of approximately 2 litres per minute per circuit or as specified for your system. Step 6: Maintenance Tips To maintain your underfloor heating system, flush it every few years to remove buildup and sediment. After flushing, add an inhibitor solution to prevent corrosion and sludge formation. Regularly monitor the flow meters to ensure consistent heating across all circuits. ========================================== #homeimprovement #underfloorheating #plumbing 📪 Newsletter: http://skill-builder.uk/signup https://www.tiktok.com/@skillbuilder https://www.facebook.com/skillbuilderchannel https://www.instagram.com/skill_builder https://twitter.com/skillbuilderuk 🔗 Skill Builder Link Tree: https://linktr.ee/skillbuilder 🛒 As an Amazon Associate, we earn from qualifying purchases 🎬 Video library: https://www.youtube.com/skillbuilderchannel/videos 💧 We Support Charity Water: https://www.charitywater.org ◾ Out of respect to our sponsors and followers, we'll remove comments that do not follow expected standards of politeness and decency.