The CH2 in Grayson’s Heating range is an all-electric cabin heater designed to provide efficient, localised driver heating in hybrid and battery-electric vehicles.

Using a self-regulating PTC heat source, it delivers up to 1.25 kW of warm air without overheating, while staged heating minimises electrical load during start-up. Heat output and blower speed are managed via CAN control, enabling smooth integration with vehicle systems.

Its reduced footprint and lower mass make the CH2 ideal for installations where packaging space is limited. Commonly used as a supplementary heat source, it allows OEMs to enhance driver comfort in cold climates without redesigning the primary HVAC system.

The CH2 includes a set of features that enable controlled performance and reliable operation.

• Self-Regulating PTC Heater: Ensures safe, stable heating without complex thermal management.
• Compact, Lightweight Design: Ideal for applications with restricted installation space.
• CAN-Controlled Heat and Airflow: Enables seamless integration and accurate control.
• Two-Speed Brushless Blower: Delivers efficient airflow with quiet operation and long life.
• Staged Heating Output: Helps manage peak current draw during vehicle start-up.
• Under-Seat Mounting Capability: Keeps cabin layouts clear and unobstructed.
• Plug-and-Play Electrical Interface: Reduces installation time and system complexity.
• Customisable Configuration Options: Supports application-specific requirements.

This heating solution is defined by a set of technical features that shape its overall performance.

• Dimensions (L x W x D): 241 × 217 × 194 mm
• Weight: 3.4kg
• Maximum Heating Capacity: 1.25kW (PTC air heating)
• Voltage Range: 20 – 32V DC (Nominal 24V)
• Peak Current: 80A start-up / 50A operating
• Blower Airflow: Up to 300 m³/h
• Fan Control Speeds: 2
• Ambient Operating Range: - –25°C to +50°C
• Thermal Cut-Out Temperature: 86°C