Elk Grove HVAC firm urges homeowners to prep for wildfire smoke before it hits

One Hour Heating & Air Conditioning of Elk Grove is telling Sacramento-area homeowners to choose indoor air filtration now, before wildfire smoke drives up demand and limits supply. The guidance leans on EPA and California rules that favor CARB-certified devices, proper filter selection and safe DIY options.

Why it matters: - Wildfire smoke can quickly overwhelm home air systems and leave popular filtration products hard to find. - The right setup can lower indoor particle levels and reduce exposure for families, especially sensitive groups. - Poor filter choices can damage HVAC equipment or fail to remove smoke effectively.

What happened: - One Hour Heating & Air Conditioning of Elk Grove urged Sacramento-area homeowners to settle their indoor air filtration plan before the next smoke event. - The message comes during wildfire season, when smoke can linger and store shelves can empty fast. - The company pointed to EPA guidance that recommends choosing a home filtration option before smoke arrives.

The details: - A central HVAC filter, also called an in-duct air cleaner, can clean air throughout a home. - Portable air cleaners and do-it-yourself units work for a single room. - EPA says two or more well-placed portable or DIY air cleaners can perform as well as running a central system continuously with a high-efficiency filter, and may cost less to operate. - Higher-efficiency central filters restrict airflow more than the lower-cost filters many systems ship with. - Not every HVAC system can handle a much higher-rated filter. - Reduced airflow can hurt performance and damage equipment. - A technician should confirm what a system can support before a high-rated filter is installed. - CARB advises checking filters frequently during smoke conditions and replacing them more often than usual. - In California, only air cleaners on CARB’s certified list can be sold because they meet ozone-emission limits. - EPA guidance for smoke recommends only CARB-certified devices. - EPA does not recommend electronic air cleaners, including ionizers and electrostatic precipitators, for smoke removal. - EPA says those devices may not effectively remove smoke particles and may produce ozone. - EPA also does not recommend photocatalytic oxidation devices, hydroxyl generators or ultraviolet-light-based units for smoke removal. - EPA says those devices are not designed to remove particles and may produce ozone or other harmful pollutants. - CARB recommends a mechanical air cleaner with a HEPA filter. - CARB says HEPA filtration captures very small particles well without emitting ozone and can cut indoor particle levels by more than 90% in some cases. - A charcoal filter can also help reduce some gases and odors from fire smoke. - For units that combine HEPA with an ionizer or UV component, CARB advises checking that the product appears on the certified list. - CARB also publishes a homemade air cleaner option for households that cannot buy a commercial unit. - The setup uses a MERV 13 or higher filter attached to the back of a box fan, with the filter arrow pointing toward the fan. - Windows and doors should stay closed while the homemade unit runs. - CARB says only box fans made in or after 2012 should be used because those have a fused plug that can reduce fire risk if the unit tips over. - An older fan should never be left running unattended or while people are sleeping. - Return-side duct leakage can undermine filtration by pulling unconditioned attic air into the airstream. - Sealed ducts can improve the value of a better filtration setup. - With heating season approaching, one visit can cover a filtration assessment, duct inspection and heating check. - One Hour Heating & Air Conditioning of Elk Grove answers calls 24 hours a day at (916) 382-2027.

Between the lines: - The advice is as much about timing as technology: the best time to buy and install smoke-readiness tools is before people are competing for them. - The emphasis on CARB-certified products reflects California’s stricter ozone rules, which narrow consumer options compared with other states. - The warning about duct leakage suggests filtration alone is not enough if the HVAC system is pulling dirty air from unsealed pathways.

What's next: - Homeowners heading into peak smoke season are likely to see the most benefit from choosing a filtration strategy now, not after an alert is issued. - Households with central systems may need a technician visit to confirm compatible filter ratings before upgrading. - Families that cannot buy a commercial purifier still have a lower-cost backup option with the box-fan method, if they follow the safety guidance.