I had a question about my air conditioner and the type of noise that it was making. There was a loud popping sound coming out of the unit, so I called up Joseph Giannone Plumbing, Heating, & Cooling. I have been using them for years, and I recently had them out to service my A/C system. The worker came out and answered my question without lifting a finger. Apparently, I have a static filter in my unit, which causes a static charge, which in turn was making the noise. I've been using them for so long because they are honest, and have helped me before with fixing so many issues I have had with my air conditioner, and I plan to continue using them.