Split system air conditioners circulate air in a room but do not bring in fresh air. Most home air conditioners are split systems.
If you have a split system, keep it on, but keep a window, vent or door open too to bring in fresh air.
Increased 'density' is the buzzword of governments trying to solving the rental affordability crisis.
With increased density comes a lack of ventilation or fresh air.
Use a fan or a 'Personal Air Circulator'
There is a difference between the $10 desktop fan and a quality brand like the Vernado Personal Air Circulator (image above).
- It will not rust
- Low noise
- Fits in a window
You can also redirect air flow of a split system air conditioner. Just bringing in a small amount of fresh air is effective because the split system will help circulate that air.
Passive House
This approach uses high levels of insulation, airtightness, double or triple glazing, and shading to create stable indoor environments with minimal energy use.
source: ABC Anthony Burke's by design - How your home is silently affecting your health
Retrofitting
For existing housing and rentals, improvements can include installing shutters, maintaining roof integrity, and ensuring heating/cooling filters are clean.
2026 Mitsubishi Electric Split System Range — Now Available
MSZ-LN Series — Premium designer, 19dB(A) ultra-quiet, Plasma Quad Plus Filter, pearl white / ruby red / onyx black
MSZ-EF Series — Contemporary style, Nano Platinum filter, natural white / matte silver / glossy black
MSZ-AP Series — Best all-rounder, 2.0–7.8kW, Blue Fin Condenser for coastal homes, up to 6 ZERL stars
MSZ-AS90 — 9.0kW for large open-plan living, 12 metre Long Airflow operation
