Because the air quality is especially so awful in this part of town, I have serious indoor air quality problems in my apartment. I bought a whole home air purification system, and for a long while, this was doing great! It truly cleared up the terrible air quality in my home, and made it as if I lived in a village with the very best air quality! That is what I call fantastic air purification! However, I noticed lately, the whole home air purification plan was not doing the best job anymore, and I needed to see what exactly was currently going on with it all. I called the heating and air conditioning system supplier who installed the unit and they sent out their best certified HVAC specialist to my house to have a look at my whole home air purification system, & also my entire central heating and air conditioning system plan unit while they were at it. The verdict was in, and it turned out the underlying reason why the whole home air purification plan was no longer properly doing its job, was because my ducttoil needed to be sealed. Something apparently had happened to the ducttoil that was allowing volumes of the outdoor awful air quality to come in through the air vents and easily mix with the whole home air purification system’s air! I enthusiastically told the HVAC specialist that I will pay whatever the cost would be that day to have the ducttoil sealing done, so I could care about having charming indoor comfort and fantastic air quality in my ecstatic home once again!