We had 30" snow last weekend, and temperatures rose today to 45 degrees and pouring rain.

But then I asked him what he wanted to do after he was done welding, and if he had given it any thought.

I didn’t find any unicorns yet of how to keep it super warm but will see if the cover makes a material difference Insulate your pool: Adding a pool cover or blanket can help to keep heat in the water and reduce the amount of energy needed to maintain a comfortable temperature.Set the thermostat correctly: Set the thermostat to the desired temperature and avoid making frequent adjustments, as this can cause the heater to cycle on and off more frequently, which can increase energy usage.Keep the heater clean: Make sure to clean the filter and other parts of the heater regularly to ensure it is operating at its best.Use a timer: Use a timer to turn the heater off when it is not in use.

There is a ton of opportunities in plumbing, electric, hvac, welding, utility workers industries. 

You can auto set the temperature to return to a set point at various times of the day.

It's not like electricity where the temperature and the season will cause it to rise and fall at different intervals.

@Mark GallagherDepending on the size of the debris/trash ~ I normally build up the sides with larger material and dump the loose stuff towards the middle.However ~ I'd have no problem framing in larger sides if I really needed it :)  At the end of the day, nothing a little grinding, steel, and welding won't take care of :)

Everyone has a different comfort zone for temperature, so if they want it cold, they can pay for it.

Aloha,Rather than a thermometer to give you only the current temp, I recommend you get a temperature data logger such as this:https://www.amazon.com/Elitech...You place this in a room for 24 - 48 hours and it will chart the temperature over time, clearly showing when HVAC cycles on and off.

Temperature control.