Scotty the Scot

What a load of guff is written here about heat loss and economy. Far too many people with “ notions “ about heat loss and thermodynamics based on their emotional approach rather than a scientific one. The question is which is the most economic use, not what brings the biggest savings or usage benefits so let’s not cloud the waters. it s a matter of scientific fact that not heating something uses less energy than heating something. The economics are basic no mater what your source of heat is. There are currently 4 laws of thermodynamics, but the one concerning us here is regarding heat loss of an object at a given temperature. This is proportional to the temperature. Simply put, the hotter the item, the faster the heat will be lost (the insulation values always remain the same in the case of a hot tub) so it is simple to show that constantly maintaining a higher heat will cause more heat to be lost over the same given time as maintaining a lower temperature. This equates to “ more expensive” The energy required in raising an object to a set temperature must also be compared to the energy used in maintaining a set higher temperature and the savings made during the cool down period. As a wise Scotsman once said “Ye canny beat the laws of physics” So please ignore all the anecdotal and notional evidence promoted here. If the opposite was true, then we would have the Holly Grail of physics “Free Energy” which would mean that perpetual motion machines could exist. If you still disagree, I would be seriously looking at your education system.