Case Study: Grosvenor Road Passive House – Lindfield, NSW

A high-performance home designed for comfort, health and efficiency.

Set in the leafy streets of Lindfield, this certified Passive House on Grosvenor Road showcases the future of healthy, energy-efficient living. Combining contemporary architecture with world-class building performance, the home delivers exceptional comfort all year round — powered behind the scenes by a finely tuned mechanical ventilation and dehumidification system. Our role was to supply, install, balance, and commission the indoor air quality systems that allow this level of comfort, efficiency, and airtightness to be achieved.

A Contemporary Passive House Built With Precision

The home’s striking façade combines brickwork, steel accents, and modern glazing. Behind the architectural finishes lies a meticulously crafted thermal envelope — airtight, highly insulated, and engineered for low-energy living. To support this level of performance, we designed and installed a complete whole-home mechanical ventilation and dehumidification solution tailored specifically for the Passive House standard.

Fresh Air, Always: Dantherm HCV460P2 HRV System

At the heart of the home is the Dantherm HCV460P2 Heat Recovery Ventilation (HRV) unit, positioned neatly within the services area. This high-performance unit ensures a continuous supply of filtered, tempered fresh air — maintaining healthy indoor conditions with minimal energy demand.

Premium Components Installed

• Dantherm HCV460P2 HRV with HCP11 controller
• Enthalpy heat exchanger
• EPP insulated ductwork, distribution and plenum boxes
• KNT100 supply air grilles, KWO100 extract grilles, KHA100 jet grilles where required

Every part of the system was installed with airtight connections and Passive House-appropriate detailing, ensuring long-term durability and optimal performance.

Moisture Control for Sydney’s Climate: Microwell DRY400

Sydney’s humidity presents unique challenges for airtight homes — which is why this project includes a Microwell DRY400 ducted dehumidifier. This system works in tandem with the HRV to maintain healthy indoor relative humidity year-round, preventing condensation, mould risk, and discomfort, supplying dry conditioned air to the living, dining, rumpus and all bedrooms.

Airtight Rangehood Solution

To preserve airtightness — often compromised by conventional kitchen exhausts — we installed a fully sealed system for the Qasair Eastmore undermount rangehood, including 300mm airtight dampers, 240V actuators, an external wall vent, and a make-up air system with insulated ducting. This ensures powerful kitchen extraction without depressurising the home.

Outcome: Comfort You Can Feel, Quality You Can’t See

This Grosvenor Road Passive House now enjoys constant filtered fresh air, stable indoor humidity year-round, extremely low energy use, whisper-quiet operation, a fully airtight mechanical system, and superior indoor air quality — a high-performance building that sets a benchmark for residential sustainability in Sydney.

Project Highlights

• Systems Installed — Dantherm HCV460P2 HRV, Microwell DRY400 ducted dehumidifier, Qasair Eastmore airtight rangehood, and EPP insulated ductwork.
• The Challenge — Achieve Passive House-level fresh air, humidity control and airtightness in a certified high-performance home.
• The Outcome — Constant filtered fresh air, stable year-round humidity, whisper-quiet operation and extremely low energy use.