Resources

A smiling woman holding a pleated air filter in a bright, clean living room, featuring a graphical overlay that demonstrates how the filter traps microscopic virus particles from the air. MERV 13 Air Filter for Viruses – Breathe Safer, Cleaner Air Today.

MERV 13 Air Filter for Viruses – Breathe Safer, Cleaner Air Today

Chealu del Castillo / April 18, 2026

A MERV 13 filter captures 85% of respiratory droplets in the 1-to-3-micron range. That one fact is why ASHRAE recommends MERV 13 for home HVAC systems, and why, in our IAQ assessments, it’s almost always the highest-impact upgrade we see homeowners skip. No, it isn’t a HEPA filter. Yes, individual virus particles are smaller than […]

Horizontal infographic for IndoorAirWise.com featuring 3D icons for thermostat optimization, air filter replacement, and sealing window leaks to reduce winter heating costs.

Resources

Big Bill? Winter HVAC Guide: Save Energy & Cut Heating Costs

Chealu del Castillo / April 17, 2026

The average U.S. household sends 43% of its annual energy budget straight to heating and cooling, according to the U.S. Department of Energy. That number is surprisingly movable. Three variables control most of the cost in a typical winter: thermostat schedule, filter condition, and duct integrity. All three drift quietly over time. None of them