HEPA filter are more expensive than the normal filter.. .does the additional cost for HEPA worth it ?
Posted 18 June 2016 - 09:35 PM
Posted 18 June 2016 - 10:10 PM
Normal will do. Or normal with carbon to help get rid of smell if your car does not already offer this feature in its AC. HEPA may result in high air flow restriction.
HEPA is commonly referred to as those capable of filtering down to 2.5micron. But there is NO standard/official specification for automotive cabin air filter; unlike some others that may specific HEPA, ULPA etc. Generally, for cabin air filters, manufacturers just claim HEPA (2.5micron) if their cabin air filter has a relatively high filtration efficiency. My personal understanding is, if the filter can reach 80% efficiency at 1 micron, it may be advertised as PM2.5 function filter.
Posted 18 June 2016 - 10:21 PM
Posted 18 June 2016 - 10:22 PM
Posted 16 May 2018 - 06:06 PM
I notice newer car tend to circulate outside air in. thus the filter sure dirtier.
I something let outside to circulate the cooling fin end up the filter very dusty and need replace.
I only change when I smell moldy smell, I think charcoal is good enough no need HEPA, as need more energy to force air through the filter..
Posted 16 May 2018 - 08:11 PM
how often should one replace the air-con filter ?
how often should one replace the engine air filter ?
do you base on time or mileage ?
Timing is better. Imagine it has already filtered out some dirt and bacteria, now you let it sit in the filter for 3 years, that is very gross. I change mine every 6 months, aircon filters are cheap especially if it is easy to change. Most japanese/korean cars should be easy to DIY change.
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