Sporadically you need to ask a lot of questions before allowing somebody to perform the job that you are hiring them for.
I found this out the strenuous way when it came to my hairstylist one day.
I thought that I was visiting someone who knew how to handle my truly delicate hair… Only to walk away with half of the hair missing from the top of my head. After that, I constantly asked for the professional credentials of anyone who worked in the cosmetic industry before I let them ruin my appearance. Well, obviously I should have had the same level of professional inspection before I allowed a heating, cooling, and professional ventilation professional into my house. I was constantly of the opinion that heating and cooling equipment was relatively easy to service and maintain. If you called the local Heating and A/C service shop and suggested for a routine inspection or service appointment, they were going to get the job done for you. I never knew that there were unusual degrees of heating and cooling workers or air quality control dealerships. I found out the strenuous way that not all heating and cooling professionals are the same. After my a/c had been worked on and maintained by a certified indoor air quality control specialist I noticed that my indoor air quality was particularly decreasing, however my energy bill seemed to be getting higher somehow. I took a look at the heating and cooling dealer who I had hired a few weeks before and noticed some unusual credentials for their team of Heating and A/C professionals. Namely, multiple of them had bought their respected Heating and A/C certifications online.