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All toolsCalculatorsInsulationFreeze Protection & Trace Heating

Freeze Protection & Trace Heating

Size trace-heating cable output by the pipe heat-loss method for freeze protection

Pipe & insulation

mm

Bare pipe OD (48.3 = DN40 steel)

mm

0 = bare pipe

W/m·K

0.04 = mineral wool / glass fibre

W/m²·K

25 = outdoor / windy

Temperatures

°C

Freeze-protection set point

°C

May be negative

K

Cable & design

%

Chromalox baseline 10%

W/m

Candidate heating cable nominal output

m
Enter pipe OD to size the trace-heating cable
ensign.software · 28 October 2026The Ensign Toolbox