Just moved into a new apartment and had my own furnace/heating system for the first time. I realized soon the furnace smelled funny and upon looking at it closer, it had no filter. As silly as it sounded, I was nervous to put the filter in myself. I messaged different businesses looking for a quote, when I messaged Perfect Efficiency, the owner immediately gave him his cell phone number and encouraged me to change the filter myself and was walking me through it so I wouldn't have to pay. I was so grateful and impressed that he took time out of his day to do that for me and for free. It is very rare to come across such kind and genuine people. I will definitely only use this company for my furnace needs.