Carrier Infinity Thermostat - install question (HVAC heat pump integrate with existing GAS heat)?

You would be better off to buy the good stuff from a Carrier Dealer rather than Sears. The salesman should have told you that the Infinity control requires a new Infintiy furnace and will likely not work well (and certainly not get the desired efficiency) with your older furnace. When properly matched, the thermostat serves as the microprocessor unit that polls the connected loads and configures itself just as a plug and play component does on newer computer systems. I would be really hesitant to buy a system like this from Sears but you will love it if you get it installed by someone who knows what he/she is doing.

Carrier Infinity Thermostat

I've never installed one of those, but I know Honeywell makes an IAQ they call it, its thermostat uses 3 wires and is wired to a circuit board, from there the circuit board is the brains of the outfit, sending the 24V needed to operate any combination of things - furnace, heat-pump, humidifier, de-humidifier, electronic air cleaner, 1st & 2nd stage heating and cooling, fresh air, or whatever could exist in the system. What and how it operates is controlled by how the thermostat is programmed. I would imagine what you are looking at is similar. All the control wiring is low voltage that goes to the thermostat and to the mother-board - that stuff the HVAC guys will hook up, the only thing the electrician would be doing is supplying 208-230 voltage to the air handler and 208-230 to the outdoor unit if it isn't already there from the panel, the HVAC contractor simply has to tie onto it with the equipment.

Infinity Thermostat

Dear pa,

Thank you, am also fine like you then dear this is very first time via you i heard about ( HVAC heat pump integrate with existing GAS heat ) please just for your remind kindly visit & know about HYPOTHERMIA machine which was used in heart surgery room ( medical equipments )