Industry
HVAC Controllers
HVAC controllers stay in service for years and often decades. The production line has to support replacement boards, firmware updates over time, and consistent relay and sensor behavior across batches separated by months.
Buyer pains we hear most
- Component obsolescence over a 10 to 15 year product life
- Replacement boards must match installed unit firmware behavior
- Relay specifications and sensor accuracy must hold across temperature
- BACnet or Modbus interop testing is non-negotiable
Typical product traits
- Mains and low-voltage mixed PCBA with isolation
- Relay outputs and protected inputs
- BACnet, Modbus, or KNX communication
- DIN-rail or wall-mount enclosure
Regulatory environment
Low Voltage Directive
2014/35/EU
EMC for residential and light industrial
EN 55014 / EN 61000-6-3
Building automation EMC
EN 50090-2-2
Test plan considerations
- Relay endurance sample test per batch
- Isolation barrier test (hipot) on every unit
- Communication interop test against reference master
- Firmware version traceability for field update support
Frequently asked questions
Do you manage component sourcing?
Yes. We work from your approved vendor list (AVL) or build one with you, including dual-source identification for lead-time risk. We flag obsolete or long-lead parts during DFM review and propose alternates when needed.
What lead times can we expect?
New product introduction takes about 4 to 8 weeks depending on component availability and test fixture readiness. Repeat batches typically run on a 3 to 5 week cadence once tooling and test plan are in place.
Can you load and provision firmware in production?
Yes. In-line firmware loading during functional test and offline programming via dedicated fixtures. We support SWD, JTAG, UART, and USB-DFU interfaces, multi-image programming (bootloader, application, file system), and signed bootloader chains.
Quote hvac controllers
Send your product files and a short description. We respond within one business day.