coolant - was running my car without coolant for more than a year will that afec

need more info,, is the car smoking?,, is there water in the oil? did the car overheat?

Labor guide time to replace the thermostat is .8 hours do his labor is acceptable. He obviously had a reason to replace the thermostat either it was stuck open which would effect emissions, heater operation and cause engine wear, or it was sticking closed or not opening fully which would cause overheating. Why were you not running coolant was there a leak and was it repaired?