St Austell, Cornwall

Elfofresh Evo2 MVHR with Radial Ducting System

We supplied and supported the installation of a Clivet Elfofresh Evo2 MVHR system with a radial ducting network in a new build 4-bedroom detached property in St Austell, Cornwall.

---

THE REQUIREMENT

As with many modern homes, Kempen House was built to very high standards of insulation and airtightness. While this improves energy efficiency, it also means the home relies on a mechanical ventilation system to ensure healthy indoor air quality, control humidity and provide year-round comfort.

The client wanted a solution that would:

• Provide continuous fresh, filtered air
• Recover heat efficiently to reduce heating demand
• Help prevent overheating in summer
• Control humidity and reduce risk of condensation and mould
• Deliver comfort all year round with minimal energy use

---

THE SOLUTION

The Clivet Elfofresh Evo2 was specified as the ideal solution for this project. Unlike conventional MVHR units, the Elfofresh Evo2 combines mechanical ventilation with active thermodynamic heat recovery, using an integrated heat pump to recover, transfer and, when required, add or remove heat.

This provides:

• Continuous ventilation with high levels of heat recovery
• Active cooling in summer to help prevent overheating
• Humidity control for a healthier indoor environment
• Quiet operation and low energy consumption
• A single integrated unit to ventilate, heat and cool the home

---

DUCTING DESIGN & INSTALLATION

A radial ducting system was used throughout the property, with each supply and extract run designed to ensure balanced airflow to every room.

The installation included:

• Pre-insulated supply and extract ducts to minimise heat loss/gain
• Radial layout for even airflow distribution
• Low profile ducting routes through floor and ceiling voids
• Fully sealed and tested ductwork to maintain system performance

---

 

RESULTS & OUTCOMES

Since commissioning, the Elfofresh Evo2 system has delivered outstanding results for the homeowners:

• Excellent indoor air quality with continuous fresh, filtered air
• Comfortable temperatures all year round, with cooling in summer and warmth in winter
• Effective humidity control, eliminating condensation and musty odours
• Reduced energy bills thanks to high levels of heat recovery and efficient operation
• A quiet, unobtrusive system that blends seamlessly with the home environment

---

PROJECT SNAPSHOT

Project: Kempen House

Location: St Austell, Cornwall

Property Type: New Build – 4 Bedroom Detached Home

System: Clivet Elfofresh Evo2 MVHR

Ducting: Radial Ducting System (Pre-insulated)

Completion: 2024