From the Field
4 Seasons Tips
Tips and observations from the owners, updated regularly.
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Air Duct Cleaning
Negative Air vs. Rotary Brush
Two companies can quote the same house and be describing very different work. Here's how the two duct cleaning methods actually compare.
Air Quality
Is Duct Fogging Safe?
Some duct cleaners upsell fogging as a disinfection service. Here's what's actually in those chemicals, what the EPA says, and why Four Seasons doesn't offer it.
Natural Cleaning
The Legend of Thieves Cleaner
Why does your home smell like cinnamon after we clean? There's a 600-year-old story behind the plant-based solution we use on every single job.
Home Maintenance
Air Exchanger Maintenance
Most homeowners forget their air exchanger exists — until it's packed with dust, leaves, and mold. Here's how to clean it yourself in about 20 minutes.
Air Quality
Wildfire Smoke & Your Home's Air
When smoke rolls in from western wildfires, your HVAC system is your first line of defense — if you're running the right filter. Here's what actually works.