HVAC
HVAC & Refrigeration Electronics Design Services | HVAC Embedded & IoT Systems
As HVAC systems become more connected and complex, manufacturers and OEMs need a technology partner who can minimise risks while accelerating development — and that’s where Promwad comes in.
- Design for tomorrow, not today. Build HVAC systems that balance upfront investment with long-term performance, using digital twins, advanced modelling, and value engineering.
- Embed intelligence to every component. Integrate IoT sensors, smart control systems, and predictive algorithms for automation, remote monitoring, and better air quality management.
- Ensure complete product lifecycle. From rapid prototyping and HVAC electronics design to lean manufacturing and after-sales optimisation — streamline performance at every step.
Roman Shuliankou,
Head of Industrial Automation Unit at Promwad
Discover Our Expertise
Heating Equipment
Gas-fired furnaces | Electric & infrared heaters (baseboard, duct, radiant floor) | Heat pumps & hydronic boilers | Unit heaters (gas/electric) & oil-fired systems | Thermostats
Cooling & Refrigeration Systems
Chillers & evaporative coolers | Rooftop HVAC units & split-system air conditioners | VRF/VRV systems & commercial refrigeration (reach-in, walk-in) | Adiabatic & precision air conditioning (data centres) | Packaged terminal air conditioners (PTAC) | Compressors | Measuring controllers
Ventilation & Air Quality Equipment
Supply, exhaust, & inline ventilation fans | HRVs & ERVs | Humidifiers & dehumidifiers (steam, ultrasonic, refrigerant) | HEPA & MERV filtration systems, air purifiers (UV-C, ionisation) | Duct silencers & demand-controlled ventilation | Air handling units (AHUs)
Control & Automation Systems
Programmable thermostats & BMS/BAS | Motor control solutions & actuators | Temperature, humidity, & air quality sensors | Pressure sensors & switches | Variable frequency drives (VFDs) & soft starters | PLC controllers & I/O modules
Our Services
Explore Our Projects
Programmable Logic Controller
We developed a PCB and embedded Linux BSP for an industrial board that was used as a part ​of a programmable logic controller (PLC).
Key features:
- ​Operating temperature range: −40 to +85˚С​
- TI Sitara AM3358 SoC​
- 256MB DDR3 | 256MB Flash​
- 256KB MRAM​
- 4 x 10/100 Ethernet via Micrel switch ​
- RS-232​
- MicroSD​
- Linux kernel 4.x
Energy Management IoT Platform
We developed a hardware platform with a BSP for a smart building energy management system. Integrating this platform into serial devices has elevated our client's standing as a market leader in IoT solutions for smart buildings.
Key features:
- AM3352 processor by Texas Instruments
- 200-pin SO-DIMM connector
- Cortex-A8 NEON SIMD coprocessor
Building Management System
We developed a building management system, a convenient and fast tool that combines elements of the building's digital infrastructure. The system is comprised of several parts combined in a shared environment for AI data analysis. It helps to optimise energy consumption based on the data obtained, which can be visualised and analysed in a format that suits the user.
Programming languages, technologies and tools:
- Node.js
- HTML, CSS
- PostgreSQL
Control Platform for Electronics Devices
Key features:
- TM32H7 MCU by STMicroelectronics
- OS — FreeRTOS
- LIN & CAN interfaces
- Touch screen UI designed with TouchGFX
Variable Frequency Drive (VFD)
We designed a variable frequency drive for the new range of ventilation systems. Our solution includes designing hardware, developing software, and preparing everything necessary to make the prototypes and launch mass production.
Electric motor control:
- Scalar control (V/f)
- Vector control (field-oriented, direct torque, sensorles field-oriented, direct torque with switch table)
- Modbus TCP/IP (Ethernet)
- Modbus RTU (RS-485)
- 0-10V
- 4-20mA
- DI/DO functional purpose
- Safe Torque Off (STO)
- Galvanic isolation for the control board
- Current sensing
- Over current protection
- Speed sensing
- Temperature sensing
ACIM
- 230V/380V
Our Tech Stack
KNX
KNX (KNX stack), KNX.net provides a KNX API for .NET, KNX-ULTIMATE (Node-Red), KNXmap
BACnet
BACnet Stack (BACnet protocol stack library provides a BACnet application layer, network layer, and media access (MAC) layer communications services), .NET library for BACnet, BACpypes
DALI
Digital Addressable Lighting Interface: python-dali — lighting control interface
EnOcean
Python EnOcean, ioBroker.enocean, enocean-js, node-enocean
LonWorks (LON)
lon4linux, LON Stack EX, Dialog’s IzoT ShortStack SDK
Matter
connectedhomeip
Other
M-Bus, OpenThread, Z-Wave, ZigBee
Why Promwad
In-depth expertise
Our engineers have extensive experience working with cutting-edge networks such as KNX, BacNet, DALI, LonWorks, and other industry-leading protocols, ensuring our clients benefit from the latest advancements and a holistic approach to design.
Reliable partnerships
At Promwad, we collaborate with renowned chip vendors, including Infineon, NXP, Microchip, and Renesas. It grants us access to the latest semiconductor technologies, allowing us to implement robust HVAC solutions.
Our Cooperation Models
Flexible approach to suit your current needs
Dedicated Team
We will form a team to fit your specific engineering task. You are free to manage it and provide additional resources.
Project-Based
We can join you at any stage or take on the entire project, including our management and risk control.
Fixed Price Model
This contract fixes the price so that it does not depend on resources used or time expended by our engineering team.
Time and Material
A T&M contract is the best option for your flexible set of tasks that are difficult or impossible to fix and assess in advance.
Don’t settle for average – future-proof your HVAC systems with Promwad’s advanced solutions!
Drop us a line about your project! We will contact you today or the next business day. All submitted information will be kept confidential.