Ventilation systems built around your building.
Specialist MVHR design, supply, installation and commissioning for Passive House and high-performance homes across South Australia.
MVHR duct installation
Intello Plus airtight membrane
What a well-designed system provides
Continuous fresh, filtered air
Supply terminals deliver fresh outdoor air to bedrooms and living areas around the clock. Extract terminals remove stale, humid air from bathrooms, kitchens and utility rooms.
Heat recovery up to 90%
A counterflow heat exchanger transfers warmth from outgoing air to incoming fresh air — without mixing the two streams. Up to 90% of heat is recovered.
Moisture and condensation control
Balanced ventilation maintains relative humidity within healthy limits, protecting structure from interstitial condensation and reducing mould risk.
Filtration — clean incoming air
Incoming air passes through fine filters (G4/F7 or equivalent) before entering living spaces, removing pollen, dust, particulates and allergens.
Acoustic comfort
A properly designed MVHR system operates at inaudible levels in habitable rooms. Duct sizing and routing are the critical design variables.
Passive House compatible
MVHR is mandatory in certified Passive House buildings. We design to Passive House Institute standards and work with certifiers and PHPP modellers.
Designed for your building — not a generic install
MVHR performance depends almost entirely on design quality and installation standard. A poorly designed system — undersized ducts, poorly located terminals, unbalanced airflow — will underperform regardless of the unit specification.
We provide full ductwork drawings to your builder before installation begins, coordinate on site during construction, and commission every system with measured airflow verification at every terminal.
- Centralised ducted systems and decentralised through-wall units
- Zehnder, Aerofresh and Lunos — brands we know and trust
- Suitable for new builds, renovations and Passive House projects
- Commissioning reports provided for certification and handover
Retrofitting an existing home? A full duct network isn’t always practical. See our guide to decentralised, single-room heat recovery ventilation.
Planning under NCC 2022 in SA? See our guide to ventilation, airtightness and condensation requirements for South Australian homes.
Worried about overnight air quality? See how much CO₂ builds up in a closed bedroom — and what MVHR changes — with our Bedroom CO₂ Calculator.
Zehnder ComfoAir Q350
Centralised
Zehnder ComfoSpot 50
Decentralised
Airtight duct penetrations — ComfoTube system
Ceiling coordination — pre-plasterboard
Installed across South Australian high-performance homes
Mount GambierDecentralised MVHR Retrofit — Mount Gambier
Zehnder ComfoSpot 50 decentralised MVHR installed and commissioned in a limestone home, with a false wall and building membrane to prevent moisture issues.
Wynn ValeHigh Performance Home — Wynn Vale
Zehnder Q350 MVHR commissioned and balanced. Reclaim Energy CO₂ heat pump supplied and installed.
MiddletonHigh Performance Home — Middleton
Sabik MVHR unit designed, supplied and commissioned. Built by 35 Degrees South, 2025.
ThebartonPassivhaus — Thebarton
Zehnder ComfoAir Q350 MVHR and Reclaim Energy CO₂ heat pump with 315L tank supplied and commissioned.
Mount BarkerPassivhaus Plus Display Home — Mount Barker
Certified Passivhaus Plus. Zehnder ComfoAir Q350 and Reclaim Energy 315L CO₂ heat pump supplied and commissioned.
Torrens ParkPassivhaus — Torrens Park
Sabik 210 MVHR designed, supplied and commissioned. Reclaim Energy CO₂ heat pump hot water system supplied. Commissioning data provided for Certified Passivhaus PHPP.
YankalliaPassivhaus — Yankallia
Zehnder ComfoAir Q350 MVHR designed, supplied and commissioned. Reclaim Energy CO₂ heat pump hot water system supplied. Commissioning data provided for Certified Passivhaus PHPP.
ThebartonBlower Door Test — Thebarton Renovation & Extension
Baseline result: 19.78 m³/(h·m²) @ 50 Pa including the lean-to; ≈12.2 m³/(h·m²) @ 50 Pa with the lean-to excluded — a clear baseline to compare against once the renovation and new MVHR system are complete.
From design to aftercare
Design consultation
Review of plans, airtightness targets and heating strategy. Unit selection and ductwork approach agreed before any drawings are produced.
Ductwork design
Full duct layout with supply and extract terminal positions, coordinated with your architect or builder before construction.
Supply & installation
We supply all components and install the system during fit-out, with on-site coordination at each relevant stage.
Commissioning
Every terminal measured and adjusted. Commissioning report issued with all values versus design targets.
Handover & aftercare
System walkthrough, user documentation and filter replacement schedule. Annual servicing available.
MVHR design & installation by region
Explore how MVHR applies to homes in your part of South Australia — each guide covers the local climate, housing styles and design considerations we see in the region.
Adelaide
Metro new builds, custom homes and volume-builder estates — no regional travel charge.
MVHR in Adelaide →Adelaide Hills
Cold winters, bushfire-rated construction and condensation control.
MVHR in Adelaide Hills →Barossa Valley
Stone and high-thermal-mass homes, hot dry summers.
MVHR in Barossa Valley →Fleurieu Peninsula
Coastal salt air, holiday homes and intermittent occupancy.
MVHR in Fleurieu Peninsula →Mount Gambier
Limestone homes, decentralised retrofits and a cooler, wetter climate.
MVHR in Mount Gambier →Riverland
Extreme summer heat, dust and evaporative-cooling legacy.
MVHR in Riverland →Frequently asked questions
Specify MVHR for your project
Engage us at design stage — the earlier we’re involved, the better the result. We work directly with architects, builders and Passive House consultants.