Geothermal Heating Cable for Greenhouse Space Air Heating 220V or 380V

Growing plants in a greenhouse during winter often means battling low overnight temperatures that can stunt growth or kill tender seedlings. An air heating cable provides a practical, direct source of warmth for the greenhouse space, helping to maintain a more consistent environment without relying on bulky heaters or complicated plumbing. This cable setup is designed to be run along the floor or on benches, radiating gentle heat into the air around your plants. With a range of lengths and voltage options, you can match the system to the size of your greenhouse and your existing electrical supply. Whether you are raising early-season vegetables, starting cuttings, or protecting sensitive ornamentals, this air heating cable offers a straightforward way to add background warmth where it is needed most.

Features and Construction

The air heating cable is supplied as a single continuous roll, ready to be laid out in your greenhouse. Different models give you flexibility in both the length of cable and the power supply, letting you choose the right fit for your space.

Length and Voltage Options

The cable is available in five standard lengths: 30m, 50m, 100m, 120m, and 175m. Models A through D use a 220V supply, while model E is rated at 380V for larger installations. This range allows you to cover anything from a small hobby greenhouse to a more substantial growing area.

Thermostat Integration

For simpler temperature control, models F through I include a 1.5kw thermostat that works with the cable. The thermostat allows you to set a target temperature, and the system will cycle the cable on and off to maintain the desired warmth, reducing manual adjustment and saving energy.

Delivery as a Single Roll

Each package contains one roll of air heating wire. This means there are no separate sections to connect or join, which simplifies the installation process. You simply unroll the cable and position it in the greenhouse according to the layout you have planned.

Uses and Placement

This heating cable is designed for air heating in greenhouse environments, providing background warmth to protect plants from cold stress and frost damage.

Greenhouse and Conservatory Use

Place the cable along the floor of the greenhouse, under benches, or along the perimeter walls to warm the surrounding air. The gentle heat rises naturally, creating a warmer microclimate around your plants without drying the air excessively.

Propagation and Seedling Raising

For those starting seeds or rooting cuttings, the cable can be positioned under seed trays or in a dedicated propagation area. The steady background warmth helps maintain the even soil and air temperatures that young plants need for steady growth.

Frost Protection for Tender Plants

When overnight frost threatens, running the cable on a low setting can raise the internal temperature of the greenhouse by several degrees, offering a buffer against freezing conditions. The thermostat models automate this process, turning on only when needed.

Benefits and Buying Value

Choosing an air heating cable offers practical advantages over larger greenhouse heaters, particularly in terms of installation simplicity and running flexibility.

Straightforward Installation

Because the cable comes on a single roll and operates on standard 220V or 380V mains power, installation is largely a matter of laying out the cable and connecting it through a suitable RCD-protected outlet. No plumbing, gas lines, or permanent fixtures are required.

Selectable Length for Different Greenhouse Sizes

The multiple length options mean you can match the heating capacity to your specific greenhouse area. A small hobby greenhouse can use the 30m or 50m cable, while a larger polytunnel or commercial space might require the 120m or 175m variant.

Thermostat Control for Energy Efficiency

Models that include a 1.5kw thermostat prevent the cable from running constantly, switching it on and off to hold a set temperature. This not only saves electricity but also keeps the greenhouse environment more stable, which is better for plant health.