Best Air Duct Cleaning in Plano TX

I've had two bad experiences with Enoch in the last two weeks:

1- I just paid thousands of dollars switching to a tankless water-heater. Enoch sent 1 employee for the complete install. After 12 hours of work the employee admitted he doesn't know why the system has bad water pressure and the next morning it took over 2 minutes for my kitchen sink to start to get warm water. I never had those problems before. I've tried reaching out and they are yet to respond. Last words to me were that I need to pay more to add a filter for hard water... something they never tested before the install. They are great at giving quotes and terrible at following through

2- I tried to get a quote on fixing airflow to my back bedroom. Two employees came and one of the young gentleman told me it's not even worth it for us to do this. I later received a quote for $8000 to completely change all my duct work. Another company quoted me $250 and said it was an easy fix

Nerio from Rescue Air Heating and Cooling came out twice in two days. The second time from about 10:30-11:30pm. He was very thorough and explained things well. He took his time to do a thorough job, even though it was so late.

I scheduled service for them to check my AC system.  I informed them on the phone that I had a coupon for the tune-up ($49).  They were late coming.  I understand that every job won't be completed on time, but they didn't call to tell me they were running late until it was 30 minutes from my scheduled appointment time.  I had other vendors to meet with and errands to run.  They said they would call me when they were leaving Garland which is at least one hour from my home (if you use the toll longer if you don't use the toll).  

I had plenty of time to run some errands from the time they called me.  They called me, not when they were en-route as they promised, but after they had arrived at my home and didn't get an answer to the doorbell.  Fortunately, I was only 10 minutes away.  They seemed very knowledgeable (There was 2 of them.).  They spent some time in the attic as well as inside my home checking out the thermostat and the filter.  They checked the outside unit and different parts and told me that I needed 2 pounds of Freon.  I agreed for them to put it in.  

After they had finished putting the Freon into the unit, they told me that I actually needed 4 pounds.  Instead of spending the $49 that I expected to spend, I ended up spending $180 (They said they wouldn't charge for the maintenance checkup. I hope not after charging me for 2 pounds that I don't even know whether I received the additional 2 pounds or not.).  I can understand the possibility of needing 2 pounds, but I don't know or understand how it went from needing 2 pounds to 4 pounds in what is a fairly new unit (The unit is only 5 years old and isn't used very much during the summer.).

I use FHS on my residential and my commercial properties. They always do a great job! The office staff is always friendly and the technicians are courteous and professional while working. Love these guys!!