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This is a great product for taking your old, hard wired 3 zone heating system and connecting it to a box that simplifies connections, organizes inputs and outputs, provides 24vAC control power, and provides diagnostic indication to make troubleshooting a non-working or partially working system a breeze. I bought this out of desperation in trying to fix my daughters heating system. I finally pulled all the wire connections apart and installed this Taco box right above the boiler. Each thermostat has a connection, each zone valve has a connection (2 for the operating motor and 2 for the end switch), AC power connection for the 24vAC transformer included, and the master pump connection. It works like a champ and was even useful in showing which connections were active so I could organize each thermostat to control the correct zone valve. Beautiful!! Works like a champ and I was never so happy to see all those wires make sense! I have no HVAC training so that should tell you something about this box!Read full review
Verified purchase: Yes | Condition: New
HVAC technician installed them all the time, dependable reliable, also go with 007e. For efficiency.
Verified purchase: Yes | Condition: New
Product is easy to install and good instructions for installation. For $100 I think it is pricey.
Verified purchase: Yes | Condition: Pre-owned
Great product, Great price couldn't be happier !!
Verified purchase: Yes | Condition: Pre-owned
It works as expected, received it quick and I got a good deal
Verified purchase: Yes | Condition: New
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