How to perform the necessary annual service maintenance on your AquaHot Hydronic Heating System.

This specific video shows the annual maintenance on an AquaHot 450D, however, the general guidelines and steps are usable for 250D02, 250D03, and all diesel 400, 450, 600 and 675 models.

If you have an older model AquaHot, a propane AquaHot, or any model not listed here please refer to your owner’s manual or Aquahot.com.

Annual Service Kit can be ordered directly through the AquaHot website.