Help with Replacement Heatpump choice
A little background:
House is 12 years old. It has 2 systems. One 2.5 ton for the lower half and a 2 ton for the upstairs. The house is victorian style, so it has many windows. 2 years ago I had the lower system replaced due to a leaking evap coil (York Systems) and the furnace had rusted quite badly due to condensation caused by humidity entering the "side shot" the original company used for venting the oil furnace. The plan is to have a boiler installed at some point for heat and hot-water, that is why the water coil is mentioned below.
Now on to my problem, the upstairs 2 ton unit, located in the attic, is heading out. It is suffering the same horrible death as the old downstairs unit. I discovered this after the first hot day here in Southern MD. The system freezes up and is barely throwing cool air. Acting quickly so as not to punish the installers by having to work in a hot attic I contacted 2 local companies and received the 2 following proposals:
1) Provide labor and materials to furnish and install one Trane 2 ton heat pump system. Proposal includes the following Trane model XL15i (4TWX5024B) outdoor heat pump; TAM7A0B30H21 indoor variable speed hyperion air handler; 10 Kw electric back up heater; auxiliary drain pan with float switch; Trane touch screen programmable comfort control; pad and pump-ups for outdoor unit; duct work re connections; add return in front bedroom
Customer cost after Instant Rebate is $6,300.00. Not sure if the trane water coil is included or not - waiting on answer since coil price is about $550
2) To install a 2 ton 15 s.e.e.r heat pump system for the second floor. This includes a variable speed air handler model #AAM7AC024, outdoor condensing unit model # 4AH5024E, 10KW heater package, and new touch screen programmable thermostat. Run a 6" return to front room of the house. Add a 20x20 Honeywell hepa filter and 60,000 water coil for the future back-up heat. PRICE: $5,880.00 - Water coil included, but not a trane or American standard.
A return duct is being added to a front bedroom. With the door open, the room isn't too bad, but when it is closed it is either too cold or too hot.
The trane guy gave me a quote last year for the downstairs system and this quote is about $800 more, I want to ask why, but not until I get some opinions here.