This page provides convenient reminders for important routine maintenance required for certain Therma-Stor products. For complete instructions regarding your Therma-Stor product, please refer to your product's manual
Standard Filters (MERV 11):
These filters can be vacuumed cleaned on a regular basis. However, they should be replaced about every 6 months.
High Efficiency Filters (MERV 14):
These filters can be vacuumed cleaned on a regular basis. Because it is a secondary filter to the standard MERV 11 filter, you should replace it every 2 - 3 years. How often you need to replace your filter(s) will vary by application.