miz 3406121 Active Systems INFINITY 21 PURON AC CARRIER AIR CONDITIONING 24ANA136A31 CNPV*4221A**+UI 58MV(B,C)100-20 37000 13.80 18.50 1 pricing is very good. top of line residential equipment. the Infinity thermostat/control is simply the best on the market and the only way to go with an Infinity system. equipment model numbers listed are correct. you do want a new refrigerant lineset. what size outside condenser are you replacing? was a heat/cool load calc performed to verify correct equipment size? You do want the "T" tin plated evap coil. verify with dealer. I prefer venting out the side if possible over roof venting. what are you doing about a whole house air cleaner for IAQ and protection of blower motor and evap coil? do you have any issues with ductwork system that need addressing? ductwork is often the third leg of a new installation that is often overlooked. have you considered a Carrier ext warranty? I would only use a Carrier FAD-Factory Authorized Dealer. IMO Good Luck!

That's similar to what I paid in the honest-and-reliable-contractors-no-man's-land between Baltimore and Philly. In other words, I wasn't satsified with their work but what can you do? I have switched to another vendor for servicing and the company I bought it from is no longer a Carrier dealer anyhow. Unit had a capacitor die in a heatwave 2 summers ago. Certain aspects of the much vaunted Infinity software seem profoundly idiotic to me: when the compressor has a nervous breakdown (which happens less now that the new company installed a booster cap) the house fan still starts running regardless. As though that will somehow magically cool the air down. Of course what it actually does is heat the house up much faster. Totally bloody moronic. In retrospect I wish I'd gone w/Trane, but the estimator had a bad attitude. Still I would have traded his bad attitude for a more reliable system: a quality capacitor costs about $10 when you have the economies of scale of Carrier, but you're telling me they can bother to install one? Unit had this failure only 2.5 years after install, and as I said, had periodically shut down for a 4 hour thermal lockout, several times before that. This was not their most top of the line unit but the next one down.

Tim, Have you considered a hybrid system? All I see in your equipment quote are split systems. I assume you have natural gas heat? The hybrid system didn't enter my thinking until pretty late in the process. I just assumed I'd replace the existing system with the exact same thing, just newer. And then someone suggested I consider a hybrid setup.. and I'm glad they did! The more I looked into a hybrid system, the more it seemed to make sense to me, considering upfront cost and operational cost in the future. I was initially concerned about the comfort level of heat from the heat pump. But with the adjustable level of the switchover point with the hybrid system... even just using either the furnace or HP only if I want... gives me options I wouldn't have with a split system. I'm able to control the way our house is heated. I like those options.

Depending on the geographic area, the complexity of the job, on new construction somewhere between $5000-9000. If in existing building, maybe additional $3000-5000. I am using Payne as a price basis. Payne is a Carrier brand. Carrier is more expensive but not more than 20%. I did 80% install earlier this year with used equipment. It was less than $1500 total. It was a 2 1/2-day job, with new lines, rework to gas line, added 2 vents, new exhaust thru roof. Built custom plenum. All in all, it was only 2 1/2 days. I am fat, old and slow. Under better conditions I should have completed the job in a day. $20k is a lot of install for a 3.5 ton system. 5 tons sounds like Pheonix or Florida. Your contractor did not do a man J in all probablilty.