Winter is coming up and it is time to do maintenance on your heating and cooling system. This should not be a problem, you have plenty of help and you have done your homework online several times. You begin the process with great confidence when you hit a little problem. You have a 410A system that you upgraded to earlier this year and you only have R-22 refrigerant. Is this a good idea? Stop and take a moment to weigh out all the risks before you end up making a mistake that could cost you thousands of dollars in repairs. What’s the Difference? What
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