Shop air dilemma

Ceedawg said

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All the machines in my ‘work’ shop, not home shop, are 3 phase, efficient and powerful. My power bill runs from $40 to $75 a month smallest motor is 5 hp biggest is 25 hp. My 80 gallon 5hp compressor will pump up from zero to 150 in 3-1/2 minutes (47 years old and still has original oil in it) My 5hp (single phase) Emglo 80 gallon at home takes way over 6 minutes. 3 phase does make a difference

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Didn't say it didn't make a difference. Most homes are not set up for three phase power, so there is an added up front cost. The equipment costs more as well. It's not as simple the running cost. For a home shop, it's overkill unless you're making money and the 2 minutes it takes to fill int eh morning makes that much of a difference. Again, if there are other machines that use 3ph, by all means, knock yourself out. I wouldn't bother though