A consistent, efficient warming effect throughout a room is achieved by laying pipes under the floor in a regular pattern although practicalities such as hidden obstacles or unusually shaped rooms may require a more complicated pattern. To correctly trace underfloor heating, the user should turn on the system and hold the thermal camera steadily pointing at the floor once it has fully warmed up. Temperature directly above pipes tends to be at roughly 26˚C compared to an average floor temperature of 18˚C. A working underfloor heating system should be easily traceable from the system manifold, throughout a property and back to the manifold.