Premium Guard PUREFLOW HEPA Cabin Air Filter PC99273HX for Kia Niro & Hyundai Ioniq (2017-2022) — HEPA + Activated Charcoal

Premium Guard PUREFLOW PC99273HX is a HEPA-grade cabin air filter engineered to trap fine airborne particles and reduce cabin odors for Kia Niro, Niro EV and Hyundai Ioniq models listed.

This PUREFLOW cabin filter replaces factory cabin filters in select 2017–2022 Kia Niro and 2017–2019 Hyundai Ioniq vehicles, and the 2019–2022 Niro EV. It combines HEPA-grade media with an activated-charcoal layer to capture particles down to 0.3 microns while helping to control traffic and environmental smells. Designed as an aftermarket upgrade to improve in-cabin air quality, the PC99273HX balances filtration efficiency with compatibility for OEM housings and climate systems.

How does this filter improve the air inside my car?

The PUREFLOW PC99273HX uses high-efficiency HEPA-grade media to capture very fine particles such as pollen, dust and smoke aerosols. A separate activated charcoal layer helps adsorb odors and volatile compounds from traffic or nearby pollutants. Together they reduce particulates and smells that can otherwise circulate through the HVAC system.

• HEPA-grade media targets particles down to 0.3 microns for finer filtration.
• Activated charcoal layer reduces strong odors from traffic and the environment.
• Multilayer construction helps protect HVAC components from debris buildup.

Will this filter fit my Kia Niro or Hyundai Ioniq?

PC99273HX is designed to fit the cabin filter housings in 2017–2022 Kia Niro (including Niro EV models from 2019–2022) and 2017–2019 Hyundai Ioniq 1.6L models. It replaces Carquest Premium part numbers 93970 and 93970P, but you should still verify fitment by checking your vehicle’s filter lookup or owner’s manual before purchase.

• Direct fit for listed model years and engine types when matched to vehicle lookup.
• Replaces Carquest Premium 93970 and 93970P compatible parts.
• Simple, drop-in installation in the OEM cabin filter housing.

Does this filter affect airflow or HVAC performance?

Because the PC99273HX uses high-efficiency HEPA-grade media, it can present slightly higher airflow resistance than standard paper filters. In most vehicles this difference is minor and does not impair the climate control system, but it’s normal to notice a small change in fan load at the highest settings. The design aims to balance filtration efficiency with acceptable airflow for everyday driving.

• High-efficiency media may cause slight, normal airflow restriction.
• Engineered to work with existing HVAC blower motors without modification.
• Helps reduce debris reaching evaporator core, supporting system longevity.

How often should I replace the PUREFLOW PC99273HX?

Replacement intervals depend on driving conditions: city traffic, heavy pollen seasons, or smoky environments may require more frequent changes. As a general guideline, inspect the cabin filter every 12 months or 12,000–15,000 miles and replace sooner if visibly dirty or if cabin air quality declines. Regular replacement keeps filtration performance high and helps maintain HVAC efficiency.

• Inspect at least annually or every 12,000–15,000 miles under normal conditions.
• Replace sooner in high-pollution, dusty, or wildfire-prone areas.
• Visual inspection of filter media helps determine replacement need.

Who is this for: The Premium Guard PUREFLOW PC99273HX is intended for Kia Niro and Hyundai Ioniq owners who prioritize improved in-cabin air quality and odor reduction beyond standard filters. It’s a good option for drivers in urban, pollen-heavy, or smoky environments who want HEPA-grade performance in a direct-fit aftermarket product. Always confirm vehicle compatibility before ordering and follow manufacturer guidance for installation and replacement intervals.