Back before I moved into a single family home I lived in a townhouse and used Cropp-Metcalfe. I was pleased with them. I stopped using them when my friend's plumbing company started doing HVAC (big nightmare for you HVAC techs - I know). I recall you saying they were good I believe, Second Opinion. I can think of other companies like B&B (I'm sure you know them) but I'm not sure how good they are.