ClenAir™ HVAC odor block is not a perfume mask or cover up. The unique ClenAir™ formula molecularly reacts with the airborne odor causing compounds and eliminates them and other indoor pollutants leaving clean, fresh, air behind. The HVAC heating block makes it easy to remove odors and improve the indoor air quality in the entire home or building by treating the air through the HVAC system. Eliminates odors caused by mold, mildew, bacteria, pets, smoke, musty odors, water damage, fire damage, paints, chemicals, animal decay, stale air, garbage areas, sewer gases, skunks and more.

Nu-Calgon Residential HVAC Odor Block, Solid, Gel Form, White, Composition: Ethanol

• Eliminates odors and improves indoor air quality
• Unique self-feeding package installs in air handler or return duct
• A true odor neutralizer, not an odor mask or cover-ups
• Residential HVAC heating block treats up to 3 ton systems for two months
• Residential HVAC heating block XL treats 2500 sq-ft for six months
• Commercial HVAC heating block treats 10 to 15 ton systems for 4 months
• Residential HVAC heating block treats up to 3 ton systems for 2 months and the XL will treat up to 2500 sq-ft for six months