What We Do
We manufacture heat pumps. The whole thing. From design through control software to final powder coating — everything is made at our factory in Bolatice, Czech Republic.
We are not an assembly shop putting together someone else’s parts. We design our own refrigerant circuits, program Siemens controllers, bend and braze copper pipes, cut, bend and powder-coat sheet metal. When something doesn’t work, we know exactly why — because we built it ourselves.
Numbers, Not Slogans
- Since 2006 — 20 years in the market
- 28,000+ heat pumps delivered
- 3–50 kW — from small family homes to commercial buildings
- Export to Germany, Austria, Switzerland and beyond
- OEM/ODM — we also manufacture under third-party brands
What’s Inside
We don’t cut corners on components. Cheap parts mean expensive repairs in a few years, and nobody wants that.
- Copeland — scroll compressors with variable speed drive
- Siemens — controllers and regulation units
- Danfoss — expansion valves and control elements
- SWEP — brazed plate heat exchangers
- Ziehl-Abegg / Ebm-papst — fans
- Lu-ve — evaporators and condensers
- Grundfos — circulation pumps
Every component is selected for the specific model and output range. This is engineering work, not catalogue picking.
How We Work
In-house R&D. We design refrigerant circuits ourselves. We write the control software ourselves. When we need to change how the heat pump behaves at -15 °C, we don’t have to call anyone — we open the code and fix it.
In-house manufacturing. CNC sheet cutting and bending, copper pipe brazing, powder coating — all under one roof in Bolatice. There’s no reason to do it elsewhere.
Remote diagnostics. Every heat pump has a built-in webserver. When you call service, the technician can check your unit remotely before even getting in the car.
HOTJET Production Facility
Who We Manufacture For
- Family homes — our most common order, 3–15 kW models
- Apartment buildings and commercial properties — 15–50 kW output, cascade setups
- OEM/ODM partners — heat pumps under your brand, with your design and specifications
- Installers — project support, technical consultations, training
Why Hotjet
Premium quality at Czech prices. We use components on par with Viessmann’s premium line, but with a newer generation of compressors (Copeland YHV) and better sound insulation. The result: A+++ energy class in the 5–20 kW categories — the only ones in comparison tests.
20 years of experience, new tech adopted fast. On the market since 2006, over 28,000 installations. Thanks to our smaller company size, we can adopt new technologies almost immediately — no waiting for head-office approval.
Full transition to R290 propane. Among the first in the Czech Republic to switch to natural refrigerant with a GWP of just 3. Ready for legislation beyond 2027.
Everything under one roof. Peak annual production reached 5,500 heat pumps with turnover approaching half a billion CZK. In-house R&D, manufacturing, powder coating and control programming — all in one place.
Where to Find Us
Production and R&D are based in Bolatice (main factory) and at CT Park in Ostrava-Poruba. We export to Germany, Austria, Switzerland and other countries — often under local brands through OEM/ODM partnerships. If you’re looking for a manufacturing partner to produce heat pumps under your own brand, get in touch.