Nu-Calgon 6107-00 (Previously 61070) ClenAir HVAC Odor Block XL – Whole Home Odor Eliminator for 3 Ton Systems, Air Handler & Return Duct Install, Removes Mold, Smoke & Musty Odors, Lasts 6 Months

Nu-Calgon 6107-00 ClenAir HVAC Odor Block XL is a whole-home HVAC odor elimination solution designed to neutralize airborne odors at the source as air circulates through the system. Unlike sprays, perfumes, or fragrance masks, the ClenAir formula molecularly reacts with odor-causing compounds to eliminate them rather than cover them up, helping improve overall indoor air quality. The unique self-feeding, vented package installs directly inside the air handler, blower compartment, or return duct. As system air moves through the HVAC equipment, the Odor Block slowly evaporates into the airstream, treating all circulated air throughout the home or building. The XL Residential version is designed for systems up to 3 tons and provides extended performance for up to 6 months, making it ideal for long-term odor management and seasonal HVAC maintenance. Eliminates odors caused by:Mold and mildewBacteriaPets and animal danderSmoke and fire damageMusty air and water damagePaints and chemical fumesGarbage areas and sewer gasesOrganic decay and skunk odorsEasy installation: Remove plastic wrap, place the Odor Block back into its vented box, and position near the air filter, in the blower compartment, or within the return duct. For stronger odor treatment, the box lid may be left slightly open. Compliance note: This product is not classified as hazardous and is not regulated as dangerous goods for transportation (DOT/IATA/IMDG). :contentReference[oaicite:0]{index=0} Ideal for residential HVAC systems, air handlers, furnaces, rooftop units, and fan coil units requiring system-wide odor control.

• 🏠 Eliminates unpleasant odors throughout the home by treating the air directly through the HVAC system rather than masking smells.
• 🧪 Uses a true odor-neutralizing formula that molecularly reacts with airborne odor-causing compounds to remove odors at the source.
• 🌬️ Designed for residential air conditioning and heat pump systems up to 3 tons without affecting airflow or system performance.
• 🐾 Effectively targets common household odors including musty smells, mold and mildew odors, pet odors, smoke, stale air, sewer gas smells, and moisture-related odors.
• 🔧 Simple, tool-free installation using a self-feeding, vented package that installs near the air filter, blower compartment, or inside the return duct system.
• ⭐ Trusted by HVAC professionals and homeowners, delivering reliable, low-maintenance odor control using proven Nu-Calgon quality standards.