Engineering + Manufacturing,
Together.
So your products stay ahead
We co-design and manufacture the electronic subsystems at the heart of your product — the drives, controllers, and custom electronics your customers will judge you by. Since 1972, motor, fan, pump, and HVAC manufacturers across Europe and the US have trusted KELD to deliver the reliability, traceability, and flexibility their brands demand.
THE CHALLENGE WE SOLVE
Your electronics are not just a component.
They are the performance core of your product.
When your drive fails, your motor fails. When your controller underperforms, your equipment underperforms. When regulations change, you need a partner who adapts — not a supplier who disappears. The electronic subsystem inside your product is what your customers experience — even if they never see it.
KELD exists because OEM manufacturers of motors, fans, pumps, compressors, HVAC systems, and refrigeration equipment need more than a box. They need an engineering partner who manufactures with discipline, traces every unit, and evolves the product throughout its lifecycle.
Co-Engineering That Accelerates
Co-Engineering That Accelerates
We do not just build to spec. We co-design for manufacturability, testability, and cost efficiency — reducing your qualification cycles and ramp-up risk from day one. Your R&D and product teams get a direct channel to electronics engineering expertise, turning product ideas into production-ready reality faster than with any catalog supplier.
See How We Work
Flexible Manufacturing, Uncompromising Quality
Flexible Manufacturing, Uncompromising Quality
Multiple product families. Varying batch sizes. Different clients, same day. Our production model is built for the complexity of custom OEM electronics — without sacrificing traceability or standards. Whether you need 200 units or 20,000, every batch runs through the same quality-governed process.
Explore Quality
A Partnership That Grows With You
A Partnership That Grows With You
The first project builds the foundation. From the second onwards, everything accelerates: faster response to changes, proactive cost optimization across production runs, and continuous product improvement informed by manufacturing insights. Our longest-standing clients have been with for over several decades — and the scope of what they entrust to KELD keeps expanding.
Discover Why KELD
Innovation Enabled by Electronics
Innovation Enabled by Electronics
Custom electronics open a door that off-the-shelf components cannot: proprietary control algorithms, connectivity features, user interfaces, and performance levels your competitors cannot replicate. Your product roadmap is not limited by what’s available on the market — it’s enabled by what we engineer together.
Explore SolutionsThe electronic core of your product — engineered for your application
Variable Speed Drives
The drives at the heart of motors, fans, pumps, and compressors. Co-engineered for your motor type, your load profile, and your performance targets — not a generic inverter with adjusted parameters.
HVAC & Temperature Control
Intelligent controllers and thermostats for heating, cooling, refrigeration, and climate systems. Purpose-built for your equipment architecture, your compliance requirements, and your end users.
Custom OEM Electronics
When your product needs electronics that don’t exist on the market: from concept to series production, with the engineering depth to differentiate your product and the manufacturing discipline to sustain it.
50+ years designing and manufacturing custom electronics.
In-house design, manufacturing, and test — one facility, full control.
INDUSTRIES WE SERVE
Trusted by manufacturers who cannot afford to fail
KELD partners with OEMs who build the products that keep industries running: electric motor manufacturers, fan and air movement OEMs, pump and compressor builders, HVAC system integrators, and refrigeration equipment makers.
We also serve thermostat distributors who need a reliable, flexible supply partner. In every case, our electronics sit at the heart of their product — and we treat that responsibility accordingly.
Ready to discuss your next project — or improve an existing one?
Whether you are starting a new design, looking to re-source an existing electronic subsystem from a supplier that no longer meets your standards, or exploring how custom electronics could differentiate your next product generation — our engineering team is ready to listen, evaluate, and propose a path forward.