In summer there is a lot of heat, while in winter it has to be artificially supplied. Greenhouses are passive sun collectors and they do a very good job! In the greenhouse the temperature rises very sharply when the sun shines on it. Without ventilation and/or shielding the temperature can rise so much that it is fatal for the plants. The short-wave rays of the sun pass through the glass and heat the soil, tablets and walls. Heat is reflected as long waves, which cannot escape through the glass. So the temperature rises.
A foil tunnel does not get so hot because the reflected long waves do pass through plastic and the light also enters diffusely. In winter the angle between the glass surface and the height of the sun becomes important when the sun is lower and the light intensity is less. Sloping walls let the light in at a right angle and therefore more light comes through the glass. With seedlings, cuttings, imported potted plants, to ripen the fruit and others … they are totally dependent on you for their care. A controlled climate control constantly ensures that your plants remain strong and healthy, which also means more harvest and more resistance to diseases. The heat ensures growth all year round.
Heating is certainly necessary if the greenhouse is used for the wintering of perennial, frost-sensitive plants in general, pelargoniums, old fuchsia bushes, etc. We ensure that we provide sufficient fresh air supply. It is very important to ensure an adapted temperature depending on the type of plants you grow in the greenhouse. Criteria for the choice are: the capacity must be sufficiently large, the purchase price and the ease of use and maintenance. If you have opted for a connection to the electricity network, an electric heater is a safe, practical and efficient tool. These are equipped with a thermostat, which allows us to save on energy.
Electric heaters do not require maintenance and we do not have to constantly think about replenishing fuel. They also ensure good air circulation. Use a min/max thermometer to check whether the desired temperature has been maintained throughout the night. You can also use the same devices for ventilation in the summer, whereby the heating function is switched off. Insulating the greenhouse ensures a considerable saving on heating costs.
The investment for good insulation is written off in no time. The most efficient method is to immediately purchase a greenhouse with double-walled polycarbonate. The additional cost is quickly recouped with intensive heating. If you have a glass greenhouse, we advise you to use our 3-walled bubble wrap. Each air bubble (bubble with a diameter of 30 mm) is trapped between 3 layers of foil. In addition to very good insulation, this foil also offers the advantage that the amount of light is hardly reduced. The bubble wrap can be applied very easily (and removed afterwards) using snapshots (these fasteners are attached to the aluminium profile with a half turn). The bubble wrap does block out around 15% of the light.
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