When I used to work on outdoor steam turbines, any parts we had to keep warm and dry, we would build plywood boxes and put the parts in the box with a droplight (incandescent bulb for heat).
You could mount a droplight in the roof of a box, cover the pipes and only turn it on in bad weather. Or forget the light, put an insulated box over the pipes and that would help the heat tape work better.
You could mount a droplight in the roof of a box, cover the pipes and only turn it on in bad weather. Or forget the light, put an insulated box over the pipes and that would help the heat tape work better.