Key Applications of Belzona Solutions within HVAC Systems

At Industrial Maintenance Solutions, we utilize Belzona’s advanced composite repair materials and protective coatings to address common issues in HVAC systems, providing long-term protection and efficient repairs. Key application areas include:

• Corrosion protection of internal surfaces
• Rebuilding and resurfacing of metallic surfaces
• Repair of mechanical elements such as shafts
• Protection of insulation and external surfaces
• Sealing of joints and seams
• Erosion protection of fan blades

Repair and Protection of Cooling Towers

Cooling tower components are highly susceptible to internal corrosion, leading to metal loss and leaks in areas such as holding pans, diffuser trays, and frameworks. Coating internal surfaces with Belzona 5811 (Immersion Grade) offers excellent corrosion and chemical resistance, designed to withstand harsh cooling tower environments.

For leak sealing in holding pans or pipework, Belzona 1212, a surface-tolerant epoxy composite, allows plate bonding to wet or contaminated surfaces. Additionally, Belzona 3121 (MR7) can be used to repair leaking seams and joints, even in emergency situations, without the need for surface primers or conditioners.

Fan blade leading edges frequently suffer from erosion-corrosion caused by moisture and dust particles. Belzona 1311 (Ceramic R-Metal) can be used to reform damaged blades, followed by a protective coating of Belzona 1341 (Supermetalglide) for long-term erosion and corrosion protection. Fan shafts can also be repaired in situ using Belzona 1111 (Super Metal), restoring them to their original dimensions.

Restoration and Protection of Chillers

Belzona’s metal repair materials are ideal for restoring chiller components suffering from erosion and corrosion, including tube sheets, flange faces, water boxes, and end covers. Solutions such as Belzona 1111 (Super Metal), Belzona 1311 (Ceramic R-Metal), and Belzona 1121 (Super XL-Metal) provide durable, long-term repairs. For high-temperature applications, Belzona 1511 (Super HT-Metal) can be used for rebuilding heat exchangers operating at temperatures up to 150°C (302°F).

For erosion and corrosion protection of chiller components, Belzona 1321 (Ceramic S-Metal) offers reliable erosion resistance in continuous immersion at temperatures up to 60°C (140°F).

Solutions for Ductwork Repair and Protection

Corrosion in ductwork can cause significant metal loss, leading to thin or through-wall defects. Belzona’s metal repair materials provide a cold-applied alternative to replacement, allowing for quick repairs and minimizing downtime.

Failing joints and seams in ductwork can allow water ingress and disrupt airflow, affecting heating and cooling processes. Belzona 2211 (MP Hi-Build Elastomer) provides a flexible and durable solution to restore joints and seams while accommodating movement. Belzona 3121 (MR7) is another flexible membrane ideal for sealing joints and emergency repairs, especially on rooftop HVAC systems.

To combat internal corrosion caused by condensation or water ingress, internal air handler parts and ductwork can be coated with Belzona 5811 (Immersion Grade), a solvent-free coating that prevents future corrosion and extends the life of your ductwork.

For insulation encapsulation, Belzona 3211 (Lagseal) provides a moisture-resistant barrier, ensuring seamless protection across complex ductwork contours, including elbows and T-pieces. This flexible membrane can be cut open and resealed for periodic inspection.