Winter puts the outdoor heat pump to a tough test, so here are the key elements to monitor to ensure its proper functioning: ❄️ 1. Keep the outer unit clear Make sure the heat pump is not blocked by snow, ice, leaves or debris. Dry regularly around the unit and maintain a free space of at least 30 to 60 cm to allow good air circulation. 🧊 2. Check ice accumulation It is normal for a little frost to form, but if a thick layer of ice persists, it may interfere with functioning. In this case, never use hot water or sharp tools: call a technician. 🔄 3. Observe de-icing cycles The heat pump passes periodically in deicing mode. If you see steam or hear a noise change, it's normal. But if the apparatus remains frozen or seems to be no longer heated, a check is required. 🔌 4. Check defrosted water flows Make sure the water from defrosting discharges properly, without returning to the unit where it could freeze and block the fan blades. 👍 5. Schedule an annual inspection Even if everything seems to work, a certified technician can detect the beginnings of a problem or adjust the parameters for winter.