The Nu-Calgon 6107-00 ClenAir HVAC Odor Block Residential XL is a true odor neutralizer engineered to eliminate airborne odors at the molecular level — not simply mask them. Unlike perfumes or cover-up sprays, the ClenAir formula reacts with odor-causing compounds and neutralizes them as air circulates through the HVAC system.

Designed for residential systems, the XL size provides extended treatment coverage of up to 2,500 square feet for up to 6 months, making it ideal for homes with persistent or recurring odor concerns.

As the HVAC system runs, the specially vented package allows the product to slowly and continuously evaporate into the return air stream, treating all conditioned air throughout the home.

Key Features

• Eliminates odors and improves indoor air quality

• Molecular odor neutralization – not a masking agent

• Unique self-feeding package for easy installation

• Treats up to 2,500 square feet

• Lasts up to 6 months

• No power source required

• Ideal for residential HVAC systems

Eliminates Odors Caused By

• Mold and mildew

• Bacteria

• Pet odors

• Smoke and musty air

• Water or fire damage

• Paints and chemicals

• Garbage areas

• Sewer gases

• Animal decay

• Skunk odors and more

Applications

Use in:

• Air conditioning units

• Furnaces

• Rooftop units

• Fan coil units

• Air handlers

• Return duct systems

Simply place inside the blower compartment or anywhere with access to the return duct system to treat all system air.

Activation & Installation (Residential XL – 6107-00)

1. Use a utility knife to cut away the inside plastic from the oval vents on each side of the box. The product remains inside the box.

2. Place the odor block package in the blower compartment or anywhere there is access to the return duct system.

3. For faster treatment or severe odors, open the box top, remove the block in plastic, remove plastic wrap, return the bare block to the box, and close the top.

4. Replace after 6 months or when fully shrunk/dried.

Product Specifications

• Brand: Nu-Calgon

• Product Name: ClenAir HVAC Odor Block Residential XL

• Part Number: 6107-00

• Size: 4.25 lb

• Coverage: Up to 2,500 sq ft

• Treatment Duration: Up to 6 months

• Application: Residential HVAC systems

Why Choose Nu-Calgon HVAC Odor Block XL?

Nu-Calgon is a trusted manufacturer of professional HVAC chemicals and indoor air quality solutions. The 6107-00 Residential XL Odor Block provides long-lasting, whole-home odor elimination without complicated installation or maintenance. It is ideal for homeowners and HVAC professionals looking for a simple and effective solution to persistent indoor odors.

Available Sizes

Other sizes are also available for different system capacities, including:

• Residential HVAC Odor Block – 6106-00

• Commercial HVAC Odor Block – 61061

Links to additional sizes can be added for easy cross-navigation.

Improve your indoor air quality and eliminate unwanted odors at the source with Nu-Calgon 6107-00 ClenAir HVAC Odor Block Residential XL. Ideal for homeowners, contractors, and property managers seeking long-term HVAC odor control.