Upgrade to MERV-13 Filters
MERV-13 filters catch up to 95 percent of smoke particles that pass through. Standard 1-inch filters let most smoke through. Check that your unit can handle the added resistance before you upgrade.
Guide
Wildfire Smoke Hvac Sacramento Indoor Air Quality
Sacramento wildfire seasons have grown longer. Your HVAC unit is your first line of defense indoors. Here is how to protect it and your air.
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Protecting Your HVAC from Wildfire Smoke in Sacramento
When smoke rolls into Sacramento from Sierra Nevada fires, your HVAC unit can filter it out or pull it in. The difference comes down to filter rating, intake control, and gear choice. Fresh Air installs MERV-13 filters and whole-home air scrubbers that handle wildfire smoke season.
Close Your Fresh Air Intake
If your unit has a fresh air damper, close it or switch to recirculate mode during smoke events. Drawing outdoor air in during a fire event defeats your filtration.
Replace Filters More Often
Heavy smoke can clog a MERV-13 filter in 30 to 60 days. During wildfire season, check filters monthly. A clogged filter forces your blower motor to work harder and shorten its life.
Steps to Protect Your HVAC During Sacramento Smoke Events
- Switch your thermostat fan to 'on' so air moves through the filter even when the AC is off.
- Close all fresh air dampers and set your unit to recirculate mode.
- Check your current filter MERV rating and swap to MERV-13 if your unit supports it.
- Ask your HVAC contractor if your unit can handle MERV-13 without cutting airflow.
- Consider a whole-home air scrubber at the air handler for ongoing protection.
- Replace filters every 30 days during active smoke events, not every 90 days.
- After smoke clears, clean your outdoor condenser coil to remove ash buildup.
What Fresh Air Installs for Smoke Protection
Fresh Air installs MERV-13 filter housings, whole-home UV air scrubbers, and ionization units that neutralize smoke. These go directly in your air handler, not as plug-in portable units.
Sacramento wildfire smoke has particles under 2.5 microns. Standard filters can't catch them. MERV-13 catches particles as small as 0.3 microns. UV air scrubbers add a second layer by destroying mold, bacteria, and VOCs that ride in with smoke. Fresh Air has served Sacramento since 2009. CSLB license 945361.
Wildfire Smoke Hvac Sacramento Indoor Air Quality FAQ
Will a higher MERV filter hurt my HVAC unit?
MERV-13 filters can restrict airflow in older units with small blower motors. A licensed tech can tell you whether your unit needs a new filter housing or blower upgrade first.
Can I just use a portable air purifier during smoke events?
Portable units help in single rooms. They cannot treat all the air in your home. A whole-home unit tied to your HVAC is more effective for full coverage.
How do I find out if my unit has a fresh air intake?
Look for a damper near your air handler or a pipe coming from outside into the return air side. Your HVAC contractor can find it and show you how to close it.
Upgrade Your Filtration Before the Next Smoke Season
Fresh Air offers free estimates on MERV-13 upgrades and whole-home air scrubber installs across Sacramento, Folsom, Elk Grove, Roseville, El Dorado Hills, and the greater Capital Region. Call (916) 416-8181 or visit /contact/.