Overview Product Description An electric heater can be purchased for frost protection. This prevents the formation of ice in the counterflow heat exchan ger in the event of long periods of frost. Product Videos Custom Field Product Reviews Write a Review Write a Review × Nilan Electric heating element (frost protection) CT150, CT200, 200 Top (900 W) Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *