Hi Mike,,, He emntioned, the zone valves were a better option than all the circulator pumps. I agther, part is more readily available, and then if one goes, I guess you trip the lever and are able to override and provide heat to that zone. I checked the BTU for the new system. Its Weil Mcclain.. Gold CGa-6 SPDN.... Its rated for 175,000 BTU. Thats what i was thinking, air lock or soemthing; there appears to some heat going thru the baseboard, because the pipes feel warm, etc.. Juts not sure.. Further what i did, when I left in the morning at 7:00, the room temp was 69.. Then took a ride home about 3 hours later, figuring when the morning warm up, sun was out etc,,, the room would be around 73.. But no, it jumped up only 1 degree in over 3 hours. Maybe its getting some water, but not enough or something.

ok i am not sure what to do here. i have a 3 bdr duplex that has stairs to a loft room which is open to the downstairs although not as MUCH as modern homes. there is a big cutout open to downstairs. the only vent located up here is near the top of the stairs, in the wall (closer to where your feet walk rather than up by your head). the vent was CLOSED when we moved in, but we moved in in january. now that it's super crazy hot, should i open this vent and allow cool air to come up here (even though the only place i feel it is on the stairs when i pass by it!) or close it and will it help the downstairs? i don't care if this upstairs gets cooler. it's not enough to be appreciable i just have a big fan up here. there is no dual zone system or anything just one thermostat. i think that since i have opened this upstairs vent it seems like the AC unit cannot get the house down to the thermostat temp i set which is 77 degrees. its sitting at 80. i guess fast answer is i should try closing it up again and see what happens huh :) steph

Also try power cycling the furnaces in question. I'm assuming the thermostats are powered by the C wire, with the battery only as a backup.

Regarding not reaching 70, I assume that the average temperature dropped in the house due to in=and-out activity that might also tend to distribute the mass of cold air from our less insulated rear porch. The next scheduled event is back down to 62 at 8:00 a.m. I couldn't find the American Standard install manual online, but the same thermostat is available from Trane. I have excerpted what I think are the relevant controls to play with. I did look at these once, but was frankly too put off by all the double negatives such as, "disables the 10 minute inhibit" and "Heating Aggressive Recovery can only be enabled if Aggressive Recovery is disabled." I'll be back home in two weeks and I can try to adjust these. Naturally, I will ask for advice here on anything I'm unsure of. Aggressive Recovery: This option disables the 10 minute inhibit anytime the thermostat sees more than a 2° change (such as moving from one program time frame to another). This applies to heating & cooling modes. Heating Aggressive Recovery: This option disables the 10 minute inhibit based on outdoor temperature in heating mode only. The value for outdoor temperature can be set from 0°��"70°. Heating Aggressive Recovery can only be enabled if Aggressive Recovery is disabled.There is a 10 minute “inhibit” period between first and second stage compressor as well as compressor heating & supplemental strip heat. This 10 minute inhibit period minimizes the cycling of higher capacity request due to drafts around the thermostat or marginal load conditions. Cycle Rate The cycle rate affects the cycle time of the system. With a 50% load value, a cycle rate of 3 will allow the system to run for 10 minutes and be off for 10 minutes; completing 3 cycles in one hour. A cycle rate of 5 would allow the system to cycle on and off at 6 minute intervals. The higher the cycle rate, the more often the system turns on and off. The actual amount of time the system will be “on” or “off” will be reflective in the load value of the home. Higher load value demands will increase system run time and decrease system off time. Lower load value demands will decrease system run time and increase system off time.Emergency HeatThe heat pump will be disabled and the furnace / heat strips are enabled any time the thermostat is set to Emergency Heat. Lockouts System lockouts will disable a certain function of the system under specific outdoor temperatures:Compressor Heating Lockout • ��" will lockout all compressor operation below a set outdoor temperature (from 5°��"70°). This value must be set lower than the auxiliary heat lockout. Auxiliary Heating Lockout • ��" will lock out auxiliary heat stages above a set outdoor temperature (from 40°��"70°). This value must be set higher than the compressor heating lockout. Defrost Heater Balance Point • for W1, W2 & W3 ��" will lock out specific auxiliary heat stages when above a set outdoor temperature. (W1 setpoint is from 40°��"55°, W2 & W3 setpoints are from 5°��"55°). This feature does not apply to dual fuel systems. Compressor Cooling First Stage Lockout • ��" will lock out the first stage compressor above a set outdoor temperature. (from 80°��"120°) Compressor Heating First Stage Lockout • ��" will lock out the first stage compressor below a set outdoor temperature. (from 0°��"50°) Furnace First Stage Heating Lockout • ��" will lock out first stage furnace operation below a set outdoor temperature. (from 15°��"50°) First stage lockouts are not available with zoning. Setpoint Dead Band This sets the temperature band between heating and cooling setpoints while in the auto mode. Here is a link that might be useful: Trane Comfortlink II Installation Manual