Quote:
Originally Posted by Justputt
I used a UV system in North TX because of my son's substantial allergy issues. We noticed a difference. We punted on installing a system for a year in TV until I noticed what appeared to be mold or some non-dust contaminate on the air filter on the 1st couple of changes. We put the UV system on and now only see modest dust each change. The higher the MERV rating the more you restrict air flow, increase energy cost, and wear on the blower motor. Here's a site the explains: MERV 8 vs MERV 11 vs MERV 13 Air Filters: Complete Comparison Guide
– Atomic Filters |
I would just add that I have been using MERV 11 filters for over 2 years, and I can really notice the difference in the dust level in my house. The airflow seems fine. Also, I wouldn't worry about the blower motor because it will probably not be affected, and it is one of the cheapest components in your HVAC system. I think the builder and HVAC technicians use MERV 8 filters because they are cheaper. But, Carrier doesn't recommend against the MERV 11 filters.
Your comment about less dust with the UV system doesn't seem to track with what I have read. UV systems kill organisms, but they are not designed to have any effect on reducing dust. The air filter reduces dust.