Why indoor air quality matters in summer
More time indoors with windows closed = more buildup of dust, pollen, and pet dander
Wildfire smoke can drift into the valley and linger in your home without proper filtration
Dry Montana air can irritate sinuses and make allergies feel worse
Simple steps to improve IAQ in Helena, MT
Change your HVAC filter regularly
Use at least a MERV 8–11 filter (or as recommended for your system)
Check monthly; replace every 1–3 months in summer
Schedule a professional AC/duct check
Make sure your system is clean and moving air properly
Ask about duct inspection if you notice dust, musty smells, or uneven airflow
Control humidity
Ideal indoor humidity is around 35–50%
A whole-home humidifier/dehumidifier setup can help balance Helena’s dry air
Consider IAQ upgrades
High-efficiency air cleaner or media filter
UV light or air purifier to reduce certain bacteria, mold spores, and some odors
Keep pollutants in check
Use exhaust fans when cooking or showering
Avoid heavy indoor chemical use (strong cleaners, aerosols) on hot, closed-window days
During wildfire smoke events, keep windows closed and run your system on “auto” or “circulate” with a good filter
If you’re in the Helena area and want to improve your home’s air quality this summer, we can:
Check and service your AC for cleaner airflow
Recommend the right filter, purifier, or humidification for your home and budget
Call us at 406-442-368 or visit www.allseasonheating-air.com to schedule an indoor air quality and cooling check before summer heat and smoke settle in.