A/C replacement advice

  1. There’s software online you can do your own load calculation. Most likely the best way for you to verify that is get a few more quotes and see what the consensus is. You need more quotes anyway.
  2. One system will always be cheaper to operate than two but you’ll sacrifice comfort. Dampers aren’t ideal. One system for each floor will always be better. I assume both current systems are located close to each other because the duct work will need to be combined for a bigger system.
  3. I think those are just upsells and would be a waste of money. That’s the first I’ve heard of the grenade but it’s only $15 if you want to add it yourself.
/r/hvacadvice Thread