FOCUS ON COIL PROCESSING
HVAC CASINGS
Pivatic’ s solution for an HVAC casings production line.
FROM COIL
Finnish manufacturer, Pivatic Oy, has refined its casing production lines from coil or sheet for HVAC( heating, ventilation and air conditioning) units. The industry sector has enjoyed strong growth in recent years.
HVAC system in a technical area.
“ For a manufacturer, the total volume for HVAC unit casings equates to hundreds of thousands per year and product models change every five to ten years.”
Heating, ventilation and air conditioning systems control the temperature, humidity and purity of the air in residential and commercial buildings. They also include water heating and circulation systems. Sheet metal is used for both outdoor and indoor products due to corrosion resistance, durability and repeatability in the process. The sector is growing due to rapid urbanisation, improvements in the standards of living and energy-saving programmes in the construction business. There are high fluctuations in demand throughout the year.
Products for the HVAC sector include air heaters; water heaters; ventilation fans and channels; fire dampers; chilled beams; fan coils and air conditioners. The different types of sheet metal products in air-conditioning systems consist of box-type appliance units that provide heating, cooling or humidity control. Fresh air is blown or drawn inside through a heat exchanger of an air handler, fan coil unit, heat pump, air condenser or other type of outdoor AC unit. The fan motor speed in these units is used to partly control the desired heating or cooling output for a building or a room.
The main sheet metal parts in these products are the HVAC unit casing, fan coil ends, brackets and internal parts with duct passages.
Casing systems can be produced from coil and sheet on systems designed by Finnish manufacturer, Pivatic Oy( part of the Vaski Group). Pivatic celebrated its 200th anniversary last year. Pivatic designs, manufactures and markets punching, shearing and bending machines for sheetmetal fabrication, as well as automated production lines.
Example of an HVAC casing / enclosure.
HVAC casing challenges
The HVAC units that have an outer sheetmetal casing are typically outdoor units or those that are stationed in a buildings’ technical area, along with the main electrical cabinet and water flow control. They contain several electrical devices, such as heat exchangers or blower motors, and are connected to the air flow ducts.
Demand for HVAC products is seasonal and rising due to increasing changes in the climate, so suppliers need to be prepared with their manufacturing process.
Production process
“ For a manufacturer, the total volume for HVAC unit casings equates to hundreds of thousands per year and product models change every five to ten years. High production speed means an automated production line to handle the casing manufacturing and assembly process throughout. A series size for a blank punching process varies from 100-500 pieces, or a single blank pile, to be fed directly to the
48 | ismr. net | ISMR April 2026