Professional Industrial Heating with Smart Connectivity
The AIRREX AH-300i diesel infrared heater delivers powerful 15kW heating capacity for large spaces up to 1500m³, making it the ideal solution for warehouses, manufacturing facilities, construction sites, and industrial workshops. This advanced heater combines industrial-grade performance with modern smart technology for efficient, controllable heating where you need it most.
Smart Remote Control Technology
Control your heating from anywhere with WiFi connectivity and the Rex Nordic mobile app (available on Android and iOS). The optional 4G network connection extends your control capabilities, perfect for facility managers overseeing multiple sites. The intuitive soft-touch LED control panel provides easy local operation, giving you flexibility in how you manage your heating.
Fuel Flexibility and Efficiency
Run on renewable diesel (HVO) or standard diesel with fuel consumption of just 1.14-1.33 L/h during continuous heating. The automatic thermostat optimizes real-world consumption by cycling intelligently, while the 45-liter fuel tank ensures extended operation without constant refueling—ideal for overnight heating or remote sites.
Precision Temperature Management
The automatic thermostat adjusts from 0-40°C for optimal comfort and fuel efficiency. Enhanced with a 24-hour stop timer and interval timer (5-60 minutes) for customized heating schedules. Infrared remote control included for convenient wireless operation.
Comprehensive Safety Systems
Built for demanding industrial environments with multiple safety features:
- Tilt and shaking detection with automatic shutdown
- Overheating protection and burner operation monitoring
- Fuel level monitoring and temperature sensor error detection
- Odour prevention system for cleaner operation
- Locking device and automatic shutdown protocols
Quiet, Efficient Operation
Despite its powerful output, the AH-300i operates at just 48dB—quieter than normal conversation—allowing clear communication and focused work. Requires minimal 80W electrical power (230V, 50Hz), running from standard outlets without dedicated circuits.
Industrial Durability
Robust construction measuring 95 x 31 x 101 cm and weighing 46kg provides stability while remaining portable. Built to withstand dusty, demanding environments with professional-grade components engineered for long-term reliability.
Ideal Applications
- Large Workshops & Industrial Halls – Consistent warmth across expansive work areas
- Warehouses & Distribution Centers – Protect inventory and maintain worker comfort
- Manufacturing Facilities – Optimal temperatures for production and quality control
- Construction Sites – Accelerate curing, prevent freezing, keep crews comfortable
- Event Tents & Temporary Structures – Flexible heating for seasonal operations
- Agricultural Buildings – Livestock protection and equipment storage
Why Choose the AIRREX AH-300i?
When reliability meets innovation, the AH-300i stands out. Substantial heating capacity, renewable fuel compatibility, comprehensive safety systems, and WiFi connectivity create a complete heating solution for modern industrial operations. Remote monitoring transforms facility management, reducing energy waste and allowing rapid response to changing conditions—all from your smartphone.
Technical Specifications
| Specification | Details |
|---|---|
| Heating Capacity | 15 kW (51,180 BTU) |
| Suitable Space Volume | Up to 1,500 m³ |
| Weight | 46 kg |
| Dimensions | 95 x 31 x 101 cm (W x D x H) |
| Fuel Type | Renewable diesel (HVO) or standard diesel |
| Fuel Consumption | 1.14 – 1.33 L/h (continuous heating) |
| Fuel Tank Capacity | 45 liters |
| Electrical Power Consumption | 80 W |
| Power Supply | 230 V, 50 Hz |
| Noise Level | 48 dB |
| Thermostat Control | Yes, automatic |
| Temperature Range | 0-40°C adjustable |
| Remote Control | Yes, infrared remote included |
| Network Connectivity | WiFi standard, optional 4G |
| Mobile App | Rex Nordic (Android Google Play / iOS App Store) |
| Control Panel | Soft-touch LED screen |
| Stop Timer | 0-24 hours programmable |
| Interval Timer | 5-60 min operation + 5 min break |
| Safety Features | Odour prevention, fuel level monitoring, tilt detection, shaking detector, overheating protection, burner operation monitoring and alarm, temperature sensor error detection, locking device, automatic shutdown |
| Suitable Applications | Warehouses, large workshops, industrial halls, manufacturing facilities, construction sites, event tents, agricultural buildings |
Package Includes
- AIRREX AH-300i Diesel Infrared Heater
- Infrared Remote Control
- User Manual
- Safety Documentation
Visit Our Showroom
See the AIRREX AH-300i in action at Cardiff Lawn and Garden.
Our knowledgeable team can demonstrate the heater’s features, answer your technical questions, and help you choose the right heating solution for your specific application.
Experience the quality and build firsthand before you buy.






Delivery shall be charged at £8.95 including VAT for all orders up to the value of £99.99. Orders to the value of £100.00 or above shall be subject to free delivery.