Belzona for Heating, Ventilation and Air Conditioning
HVAC systems often face significant strain, especially during summer and winter, and are frequently left unmaintained. Without proper maintenance and treatment to address corrosion, erosion, and microbiological growth, systems can suffer from inefficient heat transfer, higher operational costs, and reduced reliability, ultimately leading to costly replacements. Belzona offers a range of composite repair materials and protective coatings designed for the repair, maintenance, and protection of HVAC equipment, including cooling towers, ductwork, and chillers, ensuring long-lasting performance and efficiency.
Repair and protection of cooling towers
Internal corrosion in cooling tower components, such as holding pans, diffuser trays, and the framework, can lead to metal loss and leaks. Belzona 5811 (Immersion Grade) provides corrosion and chemical resistance, ideal for protecting these areas in harsh environments.
For leak sealing, Belzona 1212 bonds to wet or contaminated surfaces, perfect for holding pans and pipework repairs. Belzona 3121 (MR7) is a quick solution for leaking seams and joints, even in emergencies.
Fan blades affected by erosion-corrosion can be reformed with Belzona 1311 (Ceramic R-Metal) and protected long-term with Belzona 1341 (Supermetalglide). Fan shafts can be restored in-situ using Belzona 1111 (Super Metal).
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Restoration and protection of chillers
Belzona’s metal repair materials are commonly utilized to restore chiller components like tube sheets, flange faces, water boxes, and end covers, which are often affected by erosion and corrosion. These include versatile solutions such as Belzona 1111 (Super Metal), Belzona 1311 (Ceramic R-Metal), and Belzona 1121 (Super XL-Metal). For high-temperature applications, Belzona 1511 (Super HT-Metal) can be employed to rebuild heat exchangers that operate at temperatures up to 150°C (302°F).
Belzona epoxy coatings, such as Belzona 1321 (Ceramic S-Metal), are designed to offer long-term erosion and corrosion protection for chiller components. This coating provides superior erosion resistance in continuous immersion at temperatures up to 60°C (140°F). For further details on heat exchanger repair and protection, visit our application page.4o
Solutions for the repair and protection of ductwork
Corrosion in ductwork can lead to significant metal loss and through-wall defects. Belzona's cold-applied metal repair materials provide a quick alternative to replacement, minimizing downtime and eliminating the need for hot work.
Failures in joints and seams can disrupt airflow and allow water ingress. Belzona 2211 (MP Hi-Build Elastomer) offers a flexible, durable repair solution for these areas, while Belzona 3121 (MR7) is ideal for sealing joints and making emergency repairs, especially on HVAC system roofs.
To prevent internal corrosion caused by condensation, Belzona 5811 (Immersion Grade) can be applied as a solvent-free internal coating, protecting air handler parts and ductwork from premature failure.
For insulation, Belzona 3211 (Lagseal) creates a moisture-resistant barrier that can be opened and resealed for inspections, providing seamless protection across complex ductwork shapes like elbows and T-pieces.
Heat Exchangers
Corrosion and erosion in heat exchangers can lead to severe damage, such as thinning and leaks in critical areas like tube sheets, water boxes, and end covers. Belzona’s cold-applied metal repair materials, including Belzona 1111 (Super Metal) and Belzona 1311 (Ceramic R-Metal), provide a quick and effective alternative to replacement, restoring strength and minimizing downtime.
For long-term protection, Belzona’s epoxy coatings, like Belzona 1321 (Ceramic S-Metal), offer excellent resistance to erosion and corrosion, ensuring the continued efficiency of heat exchangers even in harsh conditions. These coatings are ideal for use in areas exposed to high temperatures and aggressive chemicals.
To prevent leaks in seams and joints, Belzona 1212 provides a surface-tolerant solution that can be applied on wet or contaminated surfaces, ensuring a reliable seal. Additionally, Belzona 1593 offers high-temperature resistance, protecting heat exchangers operating at elevated temperatures.
Belzona's solutions not only extend the life of heat exchangers but also reduce maintenance costs by preventing premature failure and minimizing the need for costly replacements.
