Hello All, First my apologies for posting this question as a response to an existing thread. I just could not figure out how to start a new thread and no matter what I tried, I was going in circles. Anyhow, I hope this question is relevant to this thread and will appreciate any answers. First the facts: I had a 5 Ton Rheem heat pump installed in our home to replace an 18-year old Lennox heat pump (Model HP22-461-2P) of about 3 or 3.5 Ton capacity which ran its course of life. The Air Handler is installed in the Attic and the external unit is outside. I bought the unit brand new and had it installed by a licensed HVAC contractor. The model of Rheem Air Handler Installed inside the Attic is RHPL-HM6024JC. The model of Rheem Heat Pump (External unit) is RPRL-060JEC. They are purchased as a packaged unit from a Rheem wholesaler through the web and I confirmed through Rheem officials that the units are compatible with each other and the seller is licensed to sell them. These are installed by a local contractor with a Honeywell FocusPRO TH6000 series thermostat which he, the contractor supplied on his own as per the agreement we signed.. The heat pump is advertised as 2-stage. Now, the problem: From the time it is installed on January 26, 2012, the outside fan is not blowing. I asked the contractor about it, and he seemed not sure, but told me not to worry about it and that it will come on when necessary. Then I read a little bit about heat pumps and also recalled that in the case of the earlier heat pump, the outside blower was running much of the time. Toward the end of its life (i.e., just before the installation of the new unit, however, the outside unit had ice formed all over it, and the fan was still struggling to run. A few contractors who came to look at it to give an estimate said that the old unit pretty much ran its life and that it needed to be replaced. One of them said with so much ice outside the heat pump is doing nothing but wasting electricity and disconnected the outside unit from the socket and asked us to put the inside thermostat to emergency heat because that is how we were getting the heat anyhow. This was the condition at the time of the new installation. The new contractor of course, threw out the old outside unit as well as the in-the-attic air handler and and replaced them with the new Rheem units and installed the Honeywell thermostat FocusPRO TH6000. Since the installation, I kept observing the outside unit and found that it was never running. I contacted the contractor after a couple of days and he said we could test it by turning off the circuit breaker for the outside unit off and wait for 5 minutes and then turn it on to see if it would come. When we did that, the outside unit fan did come on, but within a minute or two after picking up speed, it shut itself off. The home is getting heated, but I am concerned that the unit is running as an electric heater rather than as a heat pump because the outside fan is not running at all. This seems extremely unusual. I wrote to the supplier and he says the problem is most likely caused by wrong installation or wrong wiring. When I asked the contractor about it, he adamantly maintains that there is Zero Wrong with his wiring, but he does not have an explanation as to why the outside fan is not blowing. I wrote to the supplier again, and he says that in the most unlikely event that something is wrong with any of their components, they will replace them under warranty if I get a written estimate and a confirmation of the problem. My guess is that the contractor made some error in the wiring, perhaps a simple one, but am not sure what it is. According to the Owner's manual I downloaded, the Rheem heat pump is with serial communicating technology and it consists of Indoor Air handler, Outdoor air conditioning condensing unit/heat pump, and a touchscreen thermostat. The touchscreen thermostat is not supplied along with the heat pump and air handler. I asked the supplier about communicating technology and he responded that they could supply it for about $400 extra. They confirmed that "The heat pump system is definitely equipped with Rheem's Comfort Control System Serial Communicating Technology. Looking at the specs document you can see that the heat pump is equipped with this technology. The air handler you bought RHPLHM6024JC is also Communicating. This system was designed as a matched Communicating system. In order to achieve the benefits of the Communicating system you will need a Rheem 500 series thermostat. The thermostat is not included in in what you purchased. To keep prices low we sell matched split systems and let customers choose their own thermostats." I would like to know: a) How we can diagnose the reasons for the outside fan not running b) Whether the outside fan is supposed to spin when the unit is on Heat and the temperature is cold outside. c) How we can fix it to ensure that the unit is functioning as a heat pump d) Whether it is advisable to consider purchasing the thermostat recommended by Rheem have it installed. Thank you for any info or guidance you can provide.

occyfl finding a high eff heat pump in five ton mdls that qualify for the tax credit can be difficult as you have found. Carrier and sister company Bryant have introduced a new mdl "Performance 16" Heat Pump_(and Bryant mdl Preferrred 16) that qualify for the tax credit. Both are matched to Infinity/Evolution air handlers and Performance series VS air handler. Here are the AHRI configurations for the Carrier systems. The Bryant configurations are identical. 3496081 Active Systems PERFORMANCE 16 PURON HP CARRIER AIR CONDITIONING 25HPA660A30 FE4ANB006+UI 56500 12.60 16.00 59000 9.50 36600 1 3496011 Active Systems PERFORMANCE 16 PURON HP CARRIER AIR CONDITIONING 25HPA660A30 FV4CNB006 56500 12.60 16.00 59000 9.50 36600 1 These are two stg systems. Discuss features, warranty, availability with your dealer. Your ductwork system may need modification since you are going up in size. IMO

Thanks again for your input. I think we've decided on a Trane. The Carrier our friend quoted was the base model 25HBC536A with FX4DNF037T and even at $3368 it'd be a few hundred more for permit and hurricane pad, which would make it close to the cost of the company who quoted 25HCC536 and 25HBC536 models. Also with our friend, we'd need to pay it all by check. we have the funds, but Carrier is offering zero percent for a year or so - minus well use thier money for a year! Both the Carrier Comfort and Trane XR15 seem comprable in function and effeciency, so then I had to decide which one looked better to me. That's a woman for ya! :) I'm going to try to get the company who quoted the 2 Carriers and the TRANE TWR536 with TEH3F4ZB $4150 to come down a few hundred and see if he'll include the $125 for the MERV 11 1 year filter. Is it common to ask for lower price on this type of service? The only company that even asked about our windows was the One Hour AC franchise that did the only load calculation. He factored our house needs 2.5 ton unit. We had the windows in a few months before the ac broke and there was not really a significant change in our electric bill. We did go from aluminum single pane 30 year old windows to impact laminated insulated glass vinyl windows. You could feel the heat coming in on the old - the new you can barely hear any outside noise and it's got a coating that helps block the solar gains. neohioheatpump - it's always hot here in Daytona! ;) I think we're only expected to not hit 90 today because it's raining.

Model #s from Trane quote: HP: T4TWX6042H100A (XL16i) Air handler: TTAM7AOC42H31SD (Hyperion XL) Suggestions welcome. Might this not be big enough? Certainly willing to consider upgrade if needed. Husband is leaning toward the Trane based on what he has found online about reliability, etc. Also, based on what was given in the estimate, would this include a filter system? Lennox quote referenced a new media cabinet (we do have something in which we replace a Honeywell pleated filter every six months or earlier if needed, so I assume that's what you're asking about), but Trane quote said nothing re this. Current lineset would be reused (and flushed), acc to estimate. What do you mean by "the deduct" for the XR16 heat pump? [Edited to add:] Price on the steam humidifier for the Trane system was quoted as $1,300ish (husband took the call). No clue whether that's in the ballpark for such things or an outlier.