Air Filter Basics

Understanding Carrier Furnace Filter Sizes: Expert Advice on Matching Dimensions to Improve Airflow, Reduce Allergens, and Lower Energy Bills

by
Infographic explaining Carrier furnace filter sizes with icons showing improved airflow, reduced allergens, and lower energy bills on a blue background.

At ThermixHVAC.com, we’ve seen firsthand how often homeowners run into problems simply because their Carrier furnace filter doesn’t match the proper size. It might seem like a small detail, but over the years we’ve diagnosed countless service calls where an incorrect filter was the hidden culprit—restricting airflow, spreading dust and allergens, and forcing the system … Read more

Is a Higher MERV Rating Harming Airflow? Does higher MERV rating restrict airflow and reduce HVAC efficiency?

by
Image showing MERV 8, 11, and 13 air filters with the question “Is a Higher MERV Rating Harming Airflow?” to illustrate the impact of filter ratings on HVAC efficiency.

At ThermixHVAC.com, we’ve seen firsthand how choosing the wrong air filter can quietly strain HVAC systems, especially when chasing higher MERV ratings. While it’s easy to assume that better filtration always means better performance, our technicians have diagnosed countless airflow issues caused by overly restrictive filters. In this guide, we’ll share real-world insights from the … Read more