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!

Wow. I feel like a total sucker now. I have 2 estimates for Carrier equipment, each from a Northern NJ contractor: Estimate 1: AC 2.5 Ton 15 SEER 24APA530 Coil CNPVP3017ATA Furnace 70kBTU/80% 58CVA070-14 Honeywell Vision Pro Thermostat Honeywell HE-265 Humidifier Aprilaire 2200 air filter Replace chimney liner $10,347 Estimate 2 Same ac Same coil Same furnace Replace chimney liner Thermostat unknown no filter no humidifier $10,056 Estimate 3 (Lennox) AC: 2.5 ton 13 SEER (Variable Speed) Coil: C33-31 Furnace: 90k BTU 80% AFUE Thermo: Honeywell PRO 4000 Aprilaire 400 Humidifier Chimney liner replacement $9,610 These include installation into existing forced hot air duct system.

tigerdunes, I am in NE Ohio, sq footage is roughly 1300. The system was installed on thurs, and it was about 92 at the high point, so I was not too shocked after it ran for 3 hours or so with no temp change, however I left the house for another 5 or 6 hours, the sun went down and so did the outside temp, but the inside temp never moved. The next day it rained and the temp went way down into the low 70's but the cooling would not take the house below 76 and it was struggling to keep it below 77. I am pretty sure it is sized correctly, I had 8 contractors do bids for me and they all said 2 ton was the right size. The old one they took out was 2 ton and it cooled just fine. The tech that came the next day checked the refrigerant charge and said it was just a tad high so he took some out and got it on the money. He also replaced the infinity controller and it made no difference. He checked the temp on both sides of the coil and was getting a 20 degree drop. It would seem everything is perfect, but the blower will not kick up. I know if it did, the house would be cool.

"I asked the dealer for the COP but he said they don't use it any more..they now use SEER. Even Carrier support did not have this number" C.O.P. = Coefficient of Performance = btu's produced / electrical btu's in. This number varies with outdoor temperatures. It is not a single number like SEER. You need the Operating Technical Data for the heat pump to check COP as well as other info. COP determines operating cost of the heat pump in heating mode. "I am in Northern Virginia (24 miles from DC). My bills last year for gas was $926 (.099/kwh) and electric was $1,214 ($1.61/ccf)." Lok at the cost of one milion btus of heat for both fuels based on your utility rates: Heat pump w/electricity at 10 cents per kw-hr delivered price, COP = 3.25 at 35F ambient (1,000,000 / 3413 btu per kw-hr) x .10 / 3.25 = $9.77 Natural gas at $1.61 per therm, 80% efficient furnace (1,000,000 / 103,000 btu per therm) x 1.61 / .8 = $19.53 The heat pump costs 200% less to run than the 80% gas furnace (19.53 / 9.77). As ambient temps increase from the 35F example above, COP increases and the heat pump is even cheaper to run. Here are the COP numbers for my 3-ton 14 SEER Goodman heat pump based on ambient temps: Ambient temp----COP 65F-------------4.37 55F-------------4.04 45F-------------3.64 35F-------------3.25 25F-------------2.82 15F-------------2.46 5F--------------2.06 Below the balance point of the home (around 32F or so), the heat pump cannot keep up with the heat loss of the house because the btu output of the heat pump drops with temperature. Supplimentary heat is required below the balance point. My balance point is mid/upper 20's. Your climate is perfect for a heat pump. I'm in Baltimore - same climate. If you go dual fuel (heat pump plus gas furnace back-up), you have a choice if the price of one fuel drastically changes in the future. Choices are a good thing. A few notes about a heat pump (just so you know): - Heat pumps do not produce the hot 120F air temp of a furnace. They produce heat in the mid to upper 90's. - Heat pumps have a shorter operating life than straight a/c because they run in all 4 seasons. Best to you.