Thermostatic Controls - Honeywell Wireless Thermostats (TrueZone or EIM)?

I would like to replace my thermostats since I have are hardwired 125VAC units that are not programmable.

I don't feel like trying to fish wires to convert to a 24 VAC system. Plus if and when I add central a/c it might be a pain to run wires for that too. (no basement, and only half an attic)

But my question comes down to is there an advantage to using TrueZone or Equipment Interface Module? The EIM is a little less in cost.

Currently I have a 2 zone system for baseboard heat only, but plan on adding central AC in the near future (most likely 2 zone)

My options are:

-Two: Honeywell YTH6320R1009 (Programmable Thermostat, Equipment Interface Module, Return Air Sensor, Wireless Outdoor Sensor)

or

-Honeywell YTH6320R1023 Wireless Zoning Adapter Kit with Programmable Thermostat
-Honeywell TH6320R1004 Programmable Wireless Thermostat
-TrueZONE Kit with DATS, Transformer and HZ322 Panel

Is there anything that i am gaining or loosing by going with either system? I would guess if i had more then 2 zones then the TrueZone would be the better way to go?

Thanks

Bill

[FONT=Comic Sans MS]I would like to replace my thermostats since I have are hardwired 125VAC units that are not programmable.

Is your baseboard heat hot water heat or electric?

convert to a 24 VAC system.

How do you plan on doing that?



-Honeywell TH6320R1004 Programmable Wireless Thermostat
-TrueZONE Kit with DATS, Transformer and HZ322 Panel
This is going to be a better set up. The other one you need a zone panel, so that another added cost.

Baseboard heat is hot water.

Why is the more expensive one better? what am i gaining that the other one does not offer?

I got the number mixed up....

Ok, Looking at the YTH6320R1023 that does not come with a zone panel. Need to order that as well to make 2 zone work.

182 + 377 = $569

Where YTH6320R1009 is not a zone control, and does not support the two zone, unless you just want one t-stat control the boiler w/ both heat zone on same time, and other t-stat control the A/C?

I also see you need the room sensor C7189U-1005 for hot water system. $30


295 x 2 + 30 = $620


So, the YTH6320R1023 is going to be the best thing for you.

I guess I am missing something, but I was thinking that two Honeywell YTH6320R1009 (Programmable Thermostat, Equipment Interface Module, Return Air Sensor, Wireless Outdoor Sensor) would work basically the same as what I have currently(for heat). Right now I only have heat and no central a/c. And the currently there are two 125 VAC thermostats (1st and 2nd floor). I know that I will need a couple of relays to control the circulator pumps and boiler (I was going to put in a Taco SR503, and wire the thermostats to it)

By going with later option (see 1st post) with TrueZONE HZ322 Panel I was thinking that it was basically work the same since both would be wired up the same.

In either installation either zone (thermostat) would tell the circulator for that zone to kick on which would also kick on the boiler. I don't understand why the two Honeywell YTH6320R1009 kits would not do this? I think a system with a TrueZONE HZ322 Panel would be a little more elegant and give me a couple more options when it comes time to install central a/c. But I was thinking that central a/c would be two separate handlers (one 1st floor one 2nd) and one or two compressors(I don't know, I have not looked into it much at all). 1st floor I might do a mini split system with two or three zones(there are not to many places to hide ducting).

Now I am thinking the later is a better option, just for the sake of future flexibility when a/c comes into play.

YTH6320R1009 can work, but it's adding up very fast, and to me it just more "junk" and wire mess on the wall. So if you do the YTH6320R1009, you are going to have two EIM on the wall wired into the Zoneboard. Now that becomes $997

Where the YTH6320R1023 "talks" to the zone board wireless, and just one thing next to it.. It can control both zone heating and cooling. Still at $620

I don't think that two YTH6320R1009 would require a zone board, the THM5320R1000 Equipment Interface Module in the YTH6320R1009 kit would take the place of the zone board

Once you get to more then 2 zone i think the zone board comes in to its place more, especially with forced hot systems.

If I were building new or doing a large renovation, I would make each room a zone and go would the zone board.

When a/c comes in to play I plan on having 2 systems one upstairs one downstairs. I don't want to run ducts through closets and loose the space. I am sure there are ways to minimize the intrusion and I will have to cross that bridge when the time comes.

But for the little extra expense i am thinking the zone board set-up just to cover myself for future unknowns