Benefits of InduroPro on HVAC Systems

• Stops corrosive attack (salt, acids, industrial pollutants): Forms a thin, durable barrier that isolates metals from chloride salts, sulfur compounds, fertilizer/ammonia, acid rain, and cleaning residues.

• Prevents galvanic corrosion: Dielectric film separates dissimilar metals (e.g., copper tubes ↔ aluminum fins; stainless hardware ↔ aluminum frames), cutting galvanic cell formation.

• Hydrophobic & soil-shedding: Water beads and drains instead of wetting the coil, reducing moisture retention, salt crystallization, and dirt loading—coils stay cleaner longer.

• Maintains coil capacity over time: Proper thin-film application has negligible impact on heat transfer, while fouling and oxidation are slowed—so seasonal performance stays closer to “like-new.”

• UV/chemical resistance: Resists UV chalking and common rooftop/plant contaminants (bleach, solvents, disinfectants), extending component life.

• Reduced cleaning frequency & gentler methods: Typically enables rinse-only or mild-detergent maintenance—less labor, less downtime, less fin damage from harsh acids/pressure.

• Fewer repairs & replacements: Slows pin-holing of copper/aluminum, pan rust-through, and frame/base corrosion—extending intervals between coil changeouts and pan swaps.

• Lower total cost of ownership: Fewer emergency calls, parts, and cleanings; improved uptime; easier PM planning and budgeting.

• Looks & branding: Dark, uniform finish hides oxidation and staining—equipment presents “well-kept” for customers and inspector.

Where HVAC Units Corrode First (and How InduroPro Protects)

Outdoor Air-Cooled Equipment (RTUs, condensers, heat pumps)

1. Condenser fins & tube hairpins/U-bends
   • Risk: Salt spray, acid rain, fin edge oxidation; tube hairpin pitting.
   • Protection: Ultra-thin, conformal coat wets into fin packs and around hairpins, sealing edges and micro-crevices; dielectric barrier reduces galvanic couples.
2. Coil endplates, headers, brazed joints
   • Risk: Crevice corrosion and flux/chemical residues.
   • Protection: Continuous film seals crevices; chemical resistance shields residuals and airborne acids.
3. Base rails, coil guards, fan guards, fasteners
   • Risk: Standing water, chipped paint, dissimilar metal hardware.
   • Protection: Thicker film on structural steel; isolates fasteners from aluminum and resists under-film rust creep.
4. Drain pans & cabinet seams
   • Risk: Ponding water, microbial growth, and edge rust.
   • Protection: Hydrophobic surface improves drainage; barrier stops undercutting at cut edges and seams.
5. Electrical enclosures & terminal lugs (external)
   • Risk: Salt fog/condensation on exposed lugs/straps.
   • Protection: Targeted dielectric spray on external metallics reduces oxidation (avoid coating moving/heat-sensitive electrical internals).

Indoor AHUs / DX Coils / Chilled-Water Coils

1. Evaporator fins & tube sheets
   • Risk: Condensate dwell time, cleaning chemical residues.
   • Protection: Hydrophobic, inert surface reduces dwell and residue binding; allows gentler coil care.
2. Stainless/aluminum drain pans & P-traps
   • Risk: MIC (microbially influenced corrosion), chlorides.
   • Protection: Smooth, non-porous film limits biofilm anchoring; isolates chlorides from metal.
3. Support frames, slide rails, access doors
   • Risk: Condensate splash and chemical overspray.
   • Protection: Tough barrier resists abrasion/chemicals; reduces paint touch-ups and rust transfer.

Piping & Ancillaries

1. Exposed copper, aluminum, and dissimilar unions
   • Risk: Pitting at solder/braze joints; galvanic pairs.
   • Protection: Dielectric isolation across dissimilar joints; moisture barrier.
2. Coastal/industrial sites—intake hoods & louvers
   • Risk: Direct chlorides and airborne acids.
   • Protection: Coated louvers/hoods reduce upstream corrosion and contaminant loading on coils.