How to measure:
Measure the full underground run from the outdoor boiler location to the building, then add extra length for coming up out of the ground at both ends.
Do not measure just point-to-point on the surface and cut it tight. You need enough pipe to come up at the boiler and inside the building without sharp bends or splices underground.
Basic rule:
Measure the trench length, then add at least 5 ft to 10 ft extra on each end depending on your layout.
This is real ThermoPEX, not cheap wrapped pipe. Underground line matters. Poor quality pipe can lose heat all winter, crack, leak groundwater in, and waste the heat you worked hard to make.
Good for:
Outdoor wood boilers
Hydronic heating lines
House to shop runs
Replacement underground boiler line
Message with how many feet you need and where you are located.