System is hard to heat up — Low outdoor temp, blocked vents, or setting

What does System is hard to heat up mean?

The system may take longer to heat up if the outdoor temperature is very low, if air vents are blocked, or if heating zones are demanding high output.

• Low outdoor air temperature.
• Outdoor unit air inlet/outlet is blocked.
• Simultaneous heating of panels and floors.
• Low pre-set water outlet temperature.

Click steps to track your progress.

1. 1

   Clear any obstructions from the outdoor unit's air inlet and outlet vents.

2. 2

   Ensure the system settings (e.g., target water temperature) are appropriate.

3. 3

   If heating multiple zones or panels, allow extra time for the system to reach temperature.

4. 4

   In very cold weather, heating may take longer than usual. Contact your installer if performance is significantly degraded.