Second Wind

Second Wind has manufactured ultraviolet air purification equipment since 1990, building a reputation in residential and commercial indoor air quality equipment from its base in Novi, Michigan. The company introduced dual-wavelength UV lamp technology to the category and later added photo-catalytic oxidation air purification, combining germicidal UV with odor-reducing chemistry in later product generations.

Product Lines

SupplyHouse carries Second Wind's Zephyr Air Purifier line, which combines UVC, UVV, and PCO technology in a single duct-mounted unit, along with Dual HO Lamp purifiers built for extended continuous operation. The Air/Coil Clean Purifier line directs germicidal UVC light onto evaporator coil surfaces to limit biological growth on the coil itself, and the brand's catalog includes replacement UV lamps compatible with its own 2000, 5018, and 9000 Series units as well as Aprilaire 1910 and 1930 Series purifiers.

Why Contractors Specify Second Wind

HVAC technicians installing indoor air quality equipment look for UV products with documented certifications, and Second Wind units carry ETL listing along with an FDA Class II certification on its UV air purifier line. Coil-mounted UVC purifiers in particular address a recurring service call: biological growth on evaporator coils that reduces airflow and creates odor complaints over time. Offering replacement lamps that cross over to Aprilaire-branded units also gives technicians servicing mixed-equipment systems a single lamp source rather than chasing down a manufacturer-specific part.

How to Choose Second Wind Products

Selection depends mainly on what problem the system needs to solve: whole-duct air purification calls for a Zephyr or Dual HO Lamp unit mounted in the supply or return duct, while persistent coil fouling calls for an Air/Coil Clean unit aimed directly at the evaporator coil. Lamp replacement should follow the rated lamp life rather than waiting for a visible drop in performance, since UV output declines gradually before a lamp fails outright. Matching the replacement lamp to the exact unit series, whether a Second Wind model number or a compatible Aprilaire series, keeps output and fit correct.

Frequently Asked Questions

What does the PCO technology in a Second Wind purifier do?

Photo-catalytic oxidation combines UV light with a catalytic surface to break down odor-causing compounds in the airstream, working alongside germicidal UVC to address both pathogens and odors.

How often should a Second Wind UV lamp be replaced?

Lamp replacement should follow the manufacturer's rated lamp life, since UV output drops gradually over the lamp's service life even though the bulb may still appear to glow.

Can a Second Wind replacement lamp be used in an Aprilaire unit?

Yes, certain Second Wind replacement lamps are built to fit Aprilaire 1910 and 1930 Series purifiers in addition to Second Wind's own unit series.

What is the difference between a duct-mounted purifier and a coil-mounted purifier?

A duct-mounted purifier treats the entire airstream passing through the duct, while a coil-mounted purifier focuses UVC light directly on the evaporator coil surface to limit biological growth at that specific location.

Are Second Wind air purifiers certified for safety?

Second Wind UV air purifiers carry ETL listing, and the brand's UV air purifier line holds an FDA Class II certification.