We are not in the business of selling IAQ equipment to homeowners who do not need it. A few honest points:
Start with filtration. Before spending money on UV or ionization, make sure your home has a quality media filter that is being changed regularly. A MERV 11-13 media filter does more than most people realize. If you have a standard 1-inch filter slot, an Aprilaire media cleaner upgrade is often the right first step.
UV systems work best on biological contaminants. If your concern is allergens, dust, and particulate, media filtration is more effective than UV alone. If your concern is mold growth on your coil or biological air quality, UV-C at the coil makes sense. Many Rochester homeowners with humidity issues benefit from both.
Ionization is the newest technology and the science is still developing. We install iWave and REME HALO and have seen good results, but we recommend it as a complement to filtration, not a replacement for it.