Coating Outdoor HVAC Cabinets in California Plants
Condensing unit housings, rooftop unit cabinets and heat pump panels spend their lives outdoors, exposed to sun, rain and coastal air in some locations. Their coating has to resist corrosion and fading while keeping a consistent appearance across many parts. California HVAC equipment manufacturers need finishing lines that deliver that durability at production volume. Double D Mechanical installs and relocates those lines and services them along with their utility connections.
Discuss your installationPretreatment for Corrosion Resistance
Outdoor cabinets depend on thorough cleaning and conversion coating. A multi-stage washer with good nozzle coverage on formed panels, louvers and flanges sets up the powder for long service life.
Louvered and Perforated Panels
Louvers and perforations create edges and recesses that are harder to coat evenly. Gun placement, booth airflow and part orientation on hooks affect coverage. Faraday cage areas inside louvers need attention.
Cure Oven Balance for Mixed Gauges
Cabinets combine thin panels with heavier base pans and frames. The oven must cure the heaviest part without overbaking the thinnest. Airflow and line speed are set with the full part mix in mind.
- Check cure on both thin and heavy parts
- Adjust line speed for heavy part days
- Monitor oven profile periodically
What to Gather
Part list with gauges and sizes, production targets, coating specifications and building utility information.
Planning a booth or oven project in California
Crews mobilize from Houston; California is roughly 1,350 miles away, so equipment, panels and tooling are staged and shipped ahead of the install crew.
Manufacturing in California is concentrated around Los Angeles, San Francisco Bay Area, San Diego, and Inland Empire (Riverside and San Bernardino). The sectors most likely to be specifying spray booths, blast rooms, powder systems and cure ovens there include aerospace, electronics, food and beverage equipment, and metal fabrication.
Mild temperatures keep heating loads modest; local air-quality districts tend to drive permitting, so exhaust and VOC controls are planned early.
Frequently asked questions
Why is coverage poor inside louvers?
The Faraday cage effect limits powder deposition in recesses. Gun settings and part orientation help.
Can thin and heavy parts share an oven?
Yes, with line speed and airflow set for the heaviest part and checks to avoid overbaking thin parts.
What pretreatment do outdoor cabinets need?
Thorough cleaning and a conversion coating stage, with rinses, ahead of dry-off and powder.
Do you install washers and ovens together?
Yes. Complete lines can be installed with all air and utility connections.