General Questions

Q: Where can I buy FreshenOPT cabin air filters?

A: You may order it on our official website We offer delivery or in-store pickup. If you need assistance in changing cabin air filter, you are welcome to visit our local store. We do free installation for customers.

Q: Where is FreshenOPT cabin air filters offline store?

A: We've opened our first offline store at

Unit 20, 401 Alden Rd,
Markham, Ontario, Canada,
L3R 4N4

Local customers are welcome to visit our store for in-store pickup and free installation.

Q: How to install a cabin air filter?

A: The cabin air filter is typically located behind the glove box, the corner of the foot-well, under the hood or dashboard on most modern vehicles. We have instructional videos on our Youtube channel & installation page. 

Q: What’s the function of FreshenOPT cabin air filter?

A: The primary purpose of cabin air filter is to help clear the air that enters into your vehicle through the air conditioning system, keeping the air inside your vehicle clean and fresh.We have detailed information on our features page.

Q: How often should I change a cabin air filter?

A: FreshenOPT recommend changing cabin air filters when driving 10,000km or a year. To ensure all drivers & passengers away from mold, bacteria, dust & other kind of harmful contaminants from the air entering to the cabin.

Q: What happens if I don't change cabin air filter?

A: If you don't change your cabin air filter, the filter will become more clogged with dirt and debris and the efficiency of the filter and your car's HVAC system will be compromised. The air volume into your passenger compartment will be continually reduced which will lead to the issues of foul odors & bad air quality inside your car.

Q: How do you know if your cabin air filter is bad?

A: Another symptom of a bad or failing cabin air filter is an unusual odor coming from the vehicle's interior vents. An excessively contaminated filter may produce a dusty, dirty, or musty smell. The smell may become more pronounced when the AC system is turned on and may make the cabin uncomfortable for the drivers & passengers. 

Q: What happens if your cabin air filter is dirty?

A: When your air filter is dirty, your engine is forced to work harder, resulting in poor fuel economy, higher emissions and, possibly, a loss of engine power. In turn, as a worst-case scenario, a clogged cabin air filter can lead to under-performance of the A/C system, causing weak air flow from the cabin vents.

Q: Can I drive without cabin air filter?

A: You should not run without the cabin air filter. Not only does it prevent all those particles from being breathed in by you and your passengers, but it also prevents particles from getting into and damaging the fan and ducting mechanisms in your HVAC system.

Sweet Note:

  • Cabin air filters are consumables which require periodic inspection and annual replacement. 

  • The accumulation of dust and objects on the cabin air filter will not only reduce the air volume, but also cause the excessive burden of the blower, which may cause an increase in fuel consumption.

Shipping Questions

Q: How long will the delivery take?
  • United States and Canada shipments: 2-4 business day (Standard Shipping).
  • International shipments: 7-12 business days (Standard Shipping).
  • If you wish to have express shipping service, please contact directly to Please note it may need the extra fee.

Q: What’s the delivery cost?

A: We offer FREE standard shipping to Canada and United States in orders equal or over $50 CAD. We charge a flat fee of $5.95 CAD for orders less than $50 CAD.

We offer FREE Intl' standard shipping in orders equal or over $200 CAD. We charge a flat fee of $27.95 CAD for orders less than $200.

Q: What to do if I cannot find my country on the online order form?

A: Please contact us directly at We will try our best to solve the problem for you.

To learn more, please see our shipping & return policy

Custom Duty

Every country has varying tariffs and customs duties for importing air filters, and we have no control over this. If order pass through customs, FreshenOPT is not liable for any additional costs it may arise. 

Exchange/Return Questions

Q: How to do if I order the wrong products?

A: Our customer representatives will help you to process an exchange/return. Please contact directly at or message us via facebook messenger. 


Other Inquiry Questions

Q: What to do if I have other questions?

A: FreshenOPT Team is always standby for you. Please contact us directly at or message us via facebook messenger.