HOT NEWS OF A COOL IDEA

The weather has been odd over the last week.
A few days ago the temperature dropped to about 12 degrees and  it was cool enough to put a pullover on and even to consider lighting a fire in the evening.

This weekend it's back to over 20 degrees and after my walk this morning I'm boiling hot as Dad says when he takes his shirt off in Friday Night Dinner

"I'm boiling"

This prompted another 'BILLION DOLLAR IDEA'

I've had these before:

HERE

and

HERE

and

HERE

The Old Girl always says "You must be dreaming" but one of these days one of my ideas will come off.

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Today my 'Eureka' idea is for every household to have a person-sized heating or cooling machine.

This device, a bit smaller than a shower cubicle could allow someone to step into it and set the mechanism to either instant heating or instant cooling - whichever is required.

The object is to quickly lower or increase body temperature to the ambient temperature in the house.

This would preclude the necessity of having to cool or warm the entire house when one is just temporarily too hot or too cold. 

For heating it will be like a human microwave oven, toaster or 'whirlpool' appliance .

For cooling it will be like a human sized version of a wine bottle cooler or instant cooldown fridges.

What could possibly go wrong?