Available for three Toyota models — Corolla Altis, Innova Crysta, and Fortuner — each cut to the exact OEM dimensions of that vehicle's HVAC housing. Housing sizes differ meaningfully across the three models, so select your model and year at checkout to get the correct unit.

Depends on how often you use the vehicle and your local air quality. The Innova Crysta and Fortuner are frequently used for long runs and family travel, while the Corolla Altis sees heavier daily city use — all of which put different loads on the filter at different rates. Place a Prana Air monitor inside the cabin and run the AC — if PM2.5 stays elevated, the filter needs replacing regardless of when it was last changed.

Weak vent pressure across fan speeds, a stale or dusty smell with the AC running, and slower windshield clearing are the common indicators — especially in the larger Fortuner and Innova Crysta where the HVAC works harder to fill the cabin volume. The Prana Air filter is rated up to 99% efficiency against PM2.5 — use a pm2.5 air quality monitor with the AC running to measure cabin PM2.5 before and after installation to verify performance in your actual driving conditions.

Yes. Toyota's OEM filter is reliable for particulate filtration but lacks an activated carbon layer on standard configurations, leaving exhaust gases, highway VOCs, and diesel particulates — common on Fortuner and Innova Crysta runs — to pass through into the cabin. The Prana Air filter adds HEPA-grade media plus an activated carbon layer, covering the full pollutant spectrum that Toyota owners encounter on Indian roads.

Yes. On the Corolla Altis and Innova Crysta, the filter is behind the glove box — press the side clips, lower the compartment, and swap the filter with the airflow arrow pointing toward the blower. The Fortuner follows the same access method. All three are tool-free installs. The Fortuner and Innova Crysta filters are larger than sedan units — ensure the replacement seats fully flush before closing. Under 15 minutes for all three models.

The filter is a consumable and does not carry a performance warranty, as lifespan depends on driving frequency and local air quality conditions. However, if your filter arrives with a fitting issue or any physical damage at the time of delivery, we will replace the unit at no charge. Please inspect it upon receipt and contact us immediately if there is any concern.

There is a marginal decrease in airflow due to the high-efficiency filter media inside. We have designed this filter to provide the optimal balance between maximum air purification and consistent AC/heater performance.