Thermodynamics won’t allow anything to have an efficiency of 100% because some energy will be converted to heat. What about electric irons and pretty much any other heating equipment that has a working principle revolving around losing energy to heat
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Yep, heaters etc have an efficiency of 100%. Only time they don’t is if they are running a fan but the drop wouldn’t be by much at all. I guess technically if a heater is making a constant creaking noise that wouldn’t be 100% but it would still be 99.99*% with a whole lot of 9s.
I guess an argument would be made that an iron or any other focused heat system isn’t 100% because some heat would go to the handle and body etc and not the part you want hot.
Also as you would expect. Heat pump based heaters are more than 100% efficient. Usually 200-500% because you get more heat energy than you put into it.
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