A: Yes, they include a high-quality, custom fit pre-filter.

A: Under typical conditions, with a clean pre-filter and correct CFM, a Phresh® Filter will last approximately 2 years. Use our Phresh® Filter calculator to determine the right filter for you.

A: Yes - temperatures over 95° F and humidity over 75% will reduce the filter life.

A: The carbon we use is Australian RC-48 carbon derived from coal. It is widely known as the best carbon for air filtration. This carbon is far superior to carbon derived from coco in its ability to collect particulates and odors. Due to the density and increased surface of the RC-48 particulate carbon we can use less carbon in the filters. Pelletized coco carbon cannot match the performance of our carbon so competitors increase the amount of carbon and wall thickness in their filters to compensate. This makes them much heavier.

A: Not recommended, the max CFM is rated on the filters. If you go over this amount it will not give the passing air enough "contact time" with the carbon and the filter will not be able to do its job as effectively. Further, it will diminish the life of your filter.

A: Yes, but not recommended. After-market carbon will most likely not be RC-48 carbon. Your filter will not be as effective with a locally purchased replacement carbon. Also, you will not have access to the complicated, heavy-duty machines used to compress the carbon inside the filter. It will simply not work like a new Phresh® Filter would.

A: Simply put, this filter is half the weight, will last twice as long and is more effective than other brands.

A: Yes, one is included with each new filter. Yes, you need to use the pre-filter. If you do not use it, the life of your filter will be significantly reduced.

A: Yes - it is recommended that they be cleaned or replaced every 6 months. They are machine washable. Replacement pre-filters should be available from the retailer where you purchased your Phresh® Filter.

A: Both will work fine. Do what is best based on the layout of your room. Set it up with the least possible restriction (i.e. fewest bends in ducting & shortest distance of duct).

A: You can do either. Please consult your local indoor gardening retailer for guidance depending on your application.

A: Nothing other than it will last longer.

A: Use the carbon in your outdoor garden soil. Take the steel and aluminum to a recycling center or metal scrap yard.

A: You can use any high-quality inline (centrifugal) fan that has CFM's matching the filter. Eco-Plus, Vortex, Can and Elicent are all excellent fans.

A: Yes - see below: