Best New High Efficiency Air Conditioning System in Baltimore MD

I have don’t have many good things to say about this company. My first interaction with them went well enough. They installed a heating and air conditioning system in my house in 2017. At the time it was a pleasant experience. They did a good job – clean and professional and the price was Ok. So it was an obvious choice to call them for help when my gas furnace started blowing cold air 2 weeks ago. My contract with them also states Includes a full 10 year parts and 10 year labor warranty.

The problem with my furnace was as follows: It was blowing cold air and flashing code 13 “LIMIT CIRCUIT LOCKOUT”. After turning off the power, waiting and then switching the power back it appears to work fine for a few hours or even a day, but goes into “lockout” again, restarting the problem. Going through this once I thought that it was just a fluke and canceled my first appointment with AJ Michaels just to find out that the furnace started blowing cold air an hour later. I called again and an AJ Michaels technician came the same day at noon. He spent about 20 min working on the furnace, said it is fixed and left. I paid 305$ for this visit. Later the same day the furnace starts blowing cold air again and flashing code 13 “LIMIT CIRCUIT LOCKOUT” like the day before.

I called AJ Michaels to find out what exactly was done for 305$, ask about warranty and schedule a follow-up appointment. The lady on the phone said:

1) The system was checked,

2) The tripped flame rollout switch was reset

3) The BLOWN control board FUSE WAS REPLACED

She also said someone was poking around and shortcut the system and the blown fuse is evidence of it, so WARRANTY VOID.
Logically I had a question HOW IS IT POSSIBLE TO RESTART A FURNACE WITH A BLOWN FUSE?

All my attempts to get answers from the company by email or phone call had failed. After 3 day going back and forward with emails and calls I decided to cancel my upcoming appointment (I was put on a waiting list for a week) with them and seek the help of another contractor.

It would be fine by me if the warranty was voided because I didn’t have yearly maintenance with AJ Michaels. But fabrication the blown control board fuse was too much…

The issue was fixed by another contractor in 5 min for 60$. I was relieved and angry at the same time. It was combination of a clogged air filter and damper was at almost 70% closed which caused the furnace to overheat and shut down on a limit control.

I would not recommend AJ Michael for service or repairs.