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"It went very well. Green told me up front what the approximate cost would be and provided me with a two hour window of when the technician would be at my house that day. The technician contacted me and showed up an hour earlier than expected. The technician walked me through the entire process and explained the tests that he was running and what the expected results should be. I already knew what the problem was but it was nice to have someone run tests with the proper equipment to rule out any other issues. The technician replaced the faulty flame sensor pretty quickly. The technician also went through the rest of the system and gave me helpful tips and keeping it running at an optimum level. Overall, I was very pleased with the service. The cost was very high for a $30 sensor that was only one screw. But I knew the cost ahead of time because it was a Sunday and I needed heat and it was considered emergency service. I would definitely use their service again.Green's technician replaced a Trane Flame sensor on my heater."
<https://www.greenhvacair.com/residential/indoor-air-quality/>