Airmaster FW400 520W Frost Watch Heater with Adjustable Thermostat - White

The Airmaster FW400 520W Frost Watch Heater is a compact and energy-efficient convector heater designed to protect areas vulnerable to frost damage. Ideal for small rooms, offices, greenhouses, caravans, utility rooms and animal shelters, it automatically maintains a safe ambient temperature to help prevent freezing during colder months.

Featuring a fully adjustable thermostat with a temperature range of 5°C to 30°C, the FW400 automatically switches the heater on and off to maintain the selected temperature, helping to reduce unnecessary energy consumption while providing reliable frost protection.

Constructed from durable metal and thermoplastic with a steel grille, this floor-standing heater includes integrated overheat protection for added safety. Supplied with a fitted 13A UK plug, it offers a simple plug-and-play solution for dependable low-level heating.

Key Features

• 520W frost protection convector heater
• Adjustable thermostat from 5°C to 30°C
• Automatically maintains the selected temperature
• Ideal for protecting frost-prone areas
• Compact floor-standing design
• Integrated overheat safety protection
• Durable metal and thermoplastic construction
• Steel grille for long-lasting performance
• Supplied with fitted 13A UK plug
• Suitable for domestic and light commercial use

Technical Specification

• Manufacturer: Airmaster
• Part Number: FW400
• Product Type: Frost Watch Convector Heater
• Power Output: 520W
• Thermostat Range: 5°C to 30°C
• Applications: Small Rooms, Offices, Greenhouses, Caravans and Frost-Prone Areas
• Supply Voltage: 220–240V AC
• Frequency: 50–60Hz
• Ingress Protection: IP20
• Electrical Class: Class I
• Installation: Floor Standing
• Body Material: Metal and Thermoplastic
• Grille Material: Steel
• Finish: White
• Dimensions: 105 × 245 × 260mm
• Cable Length: 1.5m
• Plug Type: 13A BS1363 UK Plug
• Overheat Protection: Yes
• Tip-Over Protection: No
• Net Weight: 1.85kg
• Warranty: 1 Year
• Approvals: CE, UKCA and RoHS

Ideal Applications

Perfect for protecting greenhouses, garages, workshops, offices, caravans, utility rooms, animal shelters, toilets and other areas where frost prevention is essential.

Why Choose the Airmaster FW400?

The Airmaster FW400 offers reliable, automatic frost protection in a compact and easy-to-use design. With its adjustable thermostat, integrated overheat protection and durable construction, it provides an efficient solution for maintaining safe temperatures in vulnerable spaces throughout the winter.

Data Sheet:

Download the Airmaster FW400 Data Sheet