EcoDuct Insights 07 October 2026

Complying with Part O (Overheating) regulations in high-rise residential developments presents a tough balancing act for Project Stakeholders. Restricted window openings, high airtightness (Part L), and urban heat islands make thermal compliance, comfort, and energy efficiency increasingly difficult to deliver.

When openable windows aren't enough, relying on mechanical ventilation (MVHR) and cooling becomes essential. But traditional ducted systems often bring leakage, ineffective insulation, thermal bridging, tight space constraints, and high energy penalties.

Key High-Rise Part O Compliance Roadblocks:

 🪟 Restricted Passive Cooling: Noise, acoustic constraints, pollution, and safety concerns limit openable window areas in high-rises.

 📐 Strict Compliance Routes: The Simplified Method imposes rigid glazing limits, while Dynamic Thermal Modelling (CIBSE TM59) demands precise, high-volume airflow performance.

 📦 Tight Voids & Space Constraints: Low ceiling heights and cramped risers create coordination headaches for multi-trade installs.

How EcoDuct Mitigates Part O Risks: EcoDuct’s non-metallic, pre-insulated phenolic ductwork system gives M&E teams a competitive edge:

💨 Superior Airtightness & Airflow Efficiency: unrivalled Class D leakage rating at 2,500 Pa ensures reliable air delivery with low pressure drops, offering up to 45% HVAC energy savings.

❄️ Exceptional Thermal Performance: Low thermal conductivity (0.022–0.023 W/m·K) prevents heat gains/losses, eliminating thermal bridging and    the need for secondary insulation.

🚀 Space & Weight Savings: Up to 85% lighter than steel with low-profile shapes, cutting installation times by up to 60% via single-fix installation.

🌿 Sustainability Aligned: Lower embodied carbon (up to 75% reduction), low/zero VOCs, and full alignment with BREEAM, LEED, NABERS, UK Net Zero Carbon Buildings Standards and WELL targets.