Your vision. Our engineering. A shared product.
You’re not just looking for spare manufacturing capacity. You’re looking for a partner who understands heat pumps down to the last detail – and can turn your idea into a certified, series-producible product. From the first calculation to the packaging of the finished unit – everything under one roof. And yes, under your brand.
For 20 years, we’ve been developing and manufacturing heat pumps in Bolatice. Over 28,000 installations across Europe. Some count years in the market; we count working systems in the field.
The team that designs, calculates, and brings your product to life
Mechanical engineering: Young engineers with full ownership
Our mechanical engineering department is a bit different from what you’d expect. The oldest engineer is around thirty. The others? Late twenties. And yet – or perhaps because of that – each of them is trusted to take a product from the very beginning. From the first thermodynamic calculations, through 3D models in SolidWorks, to the physical prototype they build and test themselves.
Every machine that comes to life here has its “parent” – an engineer who guides it from sketch to serial production. Do they treat it like their baby? Maybe a little. But that’s exactly why every detail fits.
This level of personal responsibility at such a young age is not common in the industry. It is at Hotjet. And our people are rightfully proud of it.
Electrical engineering: From practice straight into design
This is where it gets really interesting. Our electrical engineers don’t come from academia. They come from technical support – the place where they solved real problems for end customers every day, trained installers, commissioned equipment, and designed heating systems.
What does that mean in practice? The people who design the electronics and control systems of your heat pump know exactly what happens after installation. They know where installers make mistakes, what end customers struggle with, and which design choices prevent future complications. The connection between practice and design isn’t a catchphrase here – it’s daily reality.
Software & controls: A proprietary brain in every unit
We write the control software for our heat pumps ourselves. Our team has historically specialized in developing control algorithms optimized specifically for our machines. No generic third-party solution – everything is custom-made and fully under our control.
Today, we also support the entire development process with AI tools – from code optimization through operational data analysis to predictive diagnostics. AI doesn’t write the software for us – but it amplifies our capabilities in ways that would have been unthinkable just two years ago.
R&D and development: Engineering without guesswork
We don’t draw pretty pictures. We engineer. We perform advanced simulations and calculations – from thermodynamics through hydraulics to structural analysis. We say “we calculate nearly everything” and we mean it. Potential problems are caught in the digital environment before the first sheet of metal is bent.
The result? We turn your idea or rough sketch into a fully functional prototype in record time. And that prototype already carries the DNA of serial production.
In-house manufacturing technology: Control over every detail
We manufacture key components ourselves. We’re not dependent on subcontractors, which means we control both timelines and quality. Our machine park handles rapid prototypes just as smoothly as continuous serial production.
Sheet metal processing
Precise shaping and cutting on modern CNC punching machines and press brakes.
Tube processing
In-house tube benders ensure perfect precision for hydraulic circuits without unnecessary and risky welds.
Custom insulation
In-house cutting plotter for precise insulation cutting – top-tier thermal and acoustic properties.
Powder coating
In-house coating line, any color shade. Your brand, your colors – an extremely durable finish without waiting for external suppliers.
Design & surface finishing: Your brand, your identity
We don’t force you into catalog compromises. Specific bevels, unique perforations, atypical dimensions? We’ll flexibly adjust the shape precisely to your requirements. The product must perfectly match your corporate identity – and we understand that.
Assembly & commissioning: From sheet metal to smart unit
Semi-finished products don’t leave our facility. We deliver fully functional units ready for immediate installation. Complete assembly, servo drives and pump installation, smart electronics wiring, measurement and control. The customer doesn’t need to coordinate any additional suppliers.
Cooperation levels: Choose what suits you
Every project is different. That’s why we offer several levels of cooperation – from a simple modification of an existing product to green-field development.
Ready-made product or its refresh
We use an already proven product from our portfolio. Optionally, we modify an older model – design refresh, minor adjustments, your colors and logo. The product fundamentally works and is largely tested. The fastest path to a finished product.
Custom development to your specification
Tell us what you need: performance, dimensions, features, colors, installation space. We’ll design and develop a heat pump to your exact specification. From a blank sheet to a certified product.
Taking over and innovating your existing product
Have a product you no longer want to manufacture? One that needs updating to the latest technologies? Or one whose supplier stopped delivering? Bring it to us. We’ll analyze what you have and propose how to bring it up to current standards – including transition to modern refrigerants like R290.
In the final phase, we can also transfer certifications from our product to a derivative – for example, in the case of a simple design modification, color change, or market adaptation. This saves you months and significant costs.
How long does it take?
| Project type | Description | Estimated timeline |
|---|---|---|
| Existing product refresh | Design update, colors, logo, minor technical changes to a proven product | 1–2 months |
| Existing model modification | Major parameter adjustments, adding features, adaptation for another market | 2–3 months |
| Development from scratch to prototype | Complete design of a new heat pump to your specification | approx. 3 months |
| Product takeover & innovation | Analysis of existing equipment, technology modernization, new certification | 2–4 months |
| Certification transfer | Derived product from a certified base (design modification, colors, market) | depends on scope |
Timelines are approximate and depend on project complexity. We’ll provide a detailed schedule based on your specific brief at the first meeting.
Case studies
White-label heat pump for the Scandinavian market
Complete development and manufacturing of an air-to-water heat pump adapted for extreme Nordic conditions under the partner’s brand.
Product line refresh for a German distributor
Design modernization and transition to R290 refrigerant for an existing product line. New look, new electronics, retained certification.
Production takeover after supplier exit
Analysis, reverse engineering, and production restart of a heat pump whose original manufacturer ceased delivery.
Custom industrial heat pump development
Development of a large custom heat pump for an industrial waste heat recovery application.
Quality and certifications: No promises, hard data
Your brand on our product means our full responsibility. And we take that seriously.
ISO 9001
Standardized quality management across the entire company.
PED Certification
We handle even the strictest pressure equipment standards. Your most complex hydraulic systems are safe with us.
Certified personnel
From welders to electrical installation experts – only certified professionals work on critical positions.
100% output testing
Spot checks don’t exist here. Every single unit goes through our test lab. We physically test pressure tightness, full system functionality, and electrical safety.
Looking for a manufacturing partner who understands heat pumps?
Send us your project, drawing, or just a basic idea. Our engineers will propose the optimal path to realization. And if you come with your own box that needs new life – even better.