The answer to 'why is my drain trap no hot water' is that the drain trap may not be getting hot water due to a few common causes. This could be because the water heater is not functioning properly, the pipes leading to the drain trap are insulated or blocked, or there is an issue with the plumbing system that is preventing hot water from reaching that area.
Some common symptoms of this problem include the drain trap feeling cool to the touch, water taking a long time to heat up, or the water coming out of the drain being lukewarm or cold. Solutions may involve checking the water heater, inspecting the pipes for any blockages or insulation issues, or making adjustments to the plumbing system to improve hot water flow.