By John Mason, JBN Mechanical, State College, PA "If that company has such awful reviews, how are they still in business?" I hear it every week. The short answer: many of them are owned by private equity, and that money plays by different rules. They were built to be flipped Private equity firms buy local HVAC shops cheap, bundle them together, and plan to resell the bigger company for a much higher price within 3 to 5 years. They've bought roughly 800 HVAC, plumbing, and ele