Fixed another company's mistakes
My previous A/C heating system which was only 5 years old needed constant repair where a defective coil made it necessary to refill the freon each year, and then it would leak on the furnace and have to replace the motor each winter. Two other companies did not want to repair this problem, just service it each year.
This company took the time to inspect the system to discover the problem rather than just treat the symptoms. They replaced the damaged parts and reinstalled the system and gave me a new warranty. The new system works great.