Heat pump & Fan Coil-Will this system heat a 3500 sq. foot home?

[bkhstar]

I'm having a new home build in N.E. PA it is 2 stories and 3500 sq feet. The home is about 85% complete and while visiting I noticed there was only one Thermostat. The builder said it didn't need 2 thermostat. So I asked him if this means it is 1 zone? He said yes and because there is no open ceiling you will not have much loss. I didn't think this was right! Also in my contract I was suppose to get 2 zones. He is willing to give me a credit back of $2300. Is that what it would cost to have a second zone put in?

I got all the model #'s off of the system and tried to do some research. It is a Carrier.

Heat Pump - 25HBA360A300
Fan Coil - FV4BNB006
Thermostat - TSTATCCNAC01-C

Will this system be enought to heat and cool this home?

From what I read the Fan Coil has a varabile speed fan and the thermostat will not work with it. Is that right?

I do not want to get duped. I also don't want to make a big deal out of something if it is not.

[totaleclipse]

Without doing a proper Manual J load cal, there is no way we can tell if the unit is the correct size, to small, or to large.
Also, I would opt for the 2 zones, especally if it was originally speced.

[deq1269]

Two zones would probably me more comfortable for you as it would allow you to control the temperature on each individual floor. Can't tell you if its the right size unit without doing a manual J calc but it does seem a bit small.

[dash]

As stated ,Manual J calculation is needed to determine the correct size.

I wouldn't want the VS air handler without the Thermidistat Control,to take advantage of it's features,but what you have is not incorrect or incompatible.Ask about upgrading.

With two floors I'd want two zones,minimum,or two systems.

[jrbenny]

If the contract calls for two zones, stick it to him. Single systems in multi-story applications rarely, if ever, provide the same comfort as two systems or a zoned system. $2300 is petty cash at this point. Don't let him weasel on this feature.

That is the wrong thermostat. It won't operate a heat pump system.

TSTATCCNAC01-C = Non-programmable Air Conditioning.

[beenthere]

Get the 2 zones.

It will most likely cost alot more down the road, then that 2300 bucks now.

[markj]

How many Kw of back-uo heat has been installed in the fan coil. Should be enough to heat the house if the heatpump fails. Also will be needed when the heatpump cannot keep up in cold weather. Have the manual J done and you will know the Kw required.
Get the two zones done properly.

[dash]

If the contract calls for two zones, stick it to him. Single systems in multi-story applications rarely, if ever, provide the same comfort as two systems or a zoned system. $2300 is petty cash at this point. Don't let him weasel on this feature.

That is the wrong thermostat. It won't operate a heat pump system.

TSTATCCNAC01-C = Non-programmable Air Conditioning.


Opps,didn't check that!

[florida pe]

You will definitely want 2 zones. Don't take the money as you will hate yourself later. Based off of the model #'s, A 3-ton system is what you're getting. Seems kinda small for 3600 sq. feet. But, ask the contractor to see his Manual J calcs. Also, you will want the Carrier "thermidistat" (model TSTATCCPRHO1-B) to take advantage of the variable speed air handler you are getting. Otherwise, you won't get any advantages from the variable speed air handler over a standard air handler other than it will "ramp-up" instead of just banging on.

[heatpumpguru]

we are in PA and 2 zone the way to go!!!I think that house must have alot of insulation for that tonnage and square ft a manual J load and manual d must be done. It gives you a feeling of comfort and it is easy to make change before the stuff is installed if required.

[captube]

#1 rule: Don't let the builder decide anything about the HVAC!
Talk directly with HVAC contractor go over the man. j. as already discussed you will need either 2 separate zones or a single system with zoning controls to control the temps in a 2 story house, It is important to correct this now not after you move in.