Customer called in for $47 water heater flush special. Customer has two water heaters for us to flush. Went ahead and performed water heater flushes. Both water heaters flushed clean. Customer does have water softener system and is working properly. Did noticed that expansion tank is not properly supported causing risers to lean on quick connect fitting. Quick connect can cause a leak if expansion tank is not supported. Also expansion tank is undersized for both water heaters. Need to have a 4.5 gallon expansion tank instead of the 2 gallon tank. Quoted customer pricing to fix expansion tank & replace quick connect fitting. Customer will contact original plumber and see if they will address quick connect fitting.