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Stages describes the number of heat or cool sources that you need to control with a single thermostat.
Voltage, or volts, is a measurement of the difference between two electric fields (in heating terms, the difference between the Earth's electrical field and the electricity running through your wires).
Amperage, or amps, refers to the amount of electricity flowing through the wires.
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The VisionPRO IAQ touchscreen universal programmable thermostat provides electronic control of 24 Vac heating and cooling systems in addition to humidification dehumidification and ventilation all with just 3 wires to the thermostat.
(based on 5 reviews)
of respondents would recommend this to a friend.
Reviewed by 5 customers
Displaying reviews 1-5
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Bought VisionPro IAQ to Replace PC8900
Comments about VisionPro IAQ Thermostat, Module, & Outdoor Sensor:
I had a 13 year old Honeywell PC8900 system that was failing. I discovered the VisionPro IAQ and bought it as a replacement. It was easy to swap with the PC8900 and works great. My old system had an outdoor temperature sensor with model #C7089. This system came with an outdoor sensor with the same model #C7089 so I thought cool, I have a spare. Once I fired up the new system, it became clear that the old C7089 and the new one have different characteristics even though they share the same model number. My outdoor temperature displayed as 127 degrees! That's a bit warm for a mid November day in Michigan. As soon as I changed to the new C7089, I got a reading of 46 degrees, which is exactly what the outside temperature was.
Bottom Line Yes, I would recommend this to a friend
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So Far So Good
from Maryland, USA
I bought this with a Honeywell steam humidifier and an outside temperature sensor. Installation is simple enough - just choose any three of your thermostat wires for the wall unit to talk to the remote module you mount near your furnace. All the key connections run from the remote unit to your furnace, heatpump, humidifier, whatever. It pays to understand what the wire colors mean on your current system.My main complaint is that the installation instructions are confusing. They clearly prefer that an HVAC tecnician install this. Oddly, the instructions that came with my TrueSteam humidifier were far clearer (though there are ~15 configurations to choose from). Download the installation instructions (on this site) from the humidifier if you have trouble.The wire on the outside temperature sensor is only ~5 or 6 feet long. You'll need extra thermostat wire to make up for that.
Quick install, works well
Installation was quick using existing wire. Works well and is easy to use.
Works great, easy install
from Allentown, PA
After much research into programmable thermostats for my heat pump system, I selected this one and have not been disappointed. I was looking for a reliable thermostat with outdoor temperature sensor (for compressor lockout and frost protection) and humidification control. This seemed to be the best one available. I installed this about a month ago without any problems. Adding a humidifier a week ago was also easy. The only slight annoyance so far is the fact that the screen is not touch sensitive everywhere, only in certain regions (although there are a lot of them). This means that when the room is dark, you have to make sure you touch the screen in one of those regions to get the back light to come on. Not a big deal, but it caught me by surprise. One nice thing, however, is that the screen dimly glows all the time. You will never see it, however, until the room is dark. It is the perfect level to find it in the dark. I would recommend downloading the more complete "Product Data" sheet from Honeywell. It contains further explanations of the setup parameters and how they are used. It also details the output sequencing. It can be found at the Honeywell website: [@]
Merchant response: The Product Data sheet mentioned in this review is now available on the "Manuals" tab on this page.
Best thermostat on the market bar none!!
from Pittsburgh, PA
This stat does it all. And it simplifies wiring. Only 3 wires required between stat and Equipment interface module. I recomend this to everyone.
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