Carrier FB4CNF030 Air Filter
Filters for your Carrier FB4CNF030 are made in lots of styles and sizings, which all depends on your personal choice for how clean you want the air and whether anyone suffers from allergies in the home. The height, length and width of the air filter can not be a choice you make due to the requirement of your system. HVAC specialists suggest the your furnace filter is exchanged for a new one every 90 days or so to maintain the best air quality inside the house.
Clues to watch for to know the primary air filter has very little life left
- When you hold the filter up to the light, it will not shine through the air filter
- Many pros have suggested to replace the filter four times a year to keep the air fresh for the family
- The unit air filter looks very bad and the best thing to do would be to replace it right now
Feel free to download your manual for help.