Two-Zone Switching Relay with Priority, 120 VAC Reviews

4.9 Rating 97 Reviews

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4,745

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“Easy to install taco reliably great service”

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Posted 9 years ago

“Replacement for a older model. Works as advertised and is easy to install.”

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Posted 9 years ago

“Always like the dependability of Taco products”

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Posted 10 years ago

“I purchased this unit and it arrived in less than 24 hrs., and I'm a few states away. This unit saved me time and a lot of aggravation. It is so simple to wire your connection and the price was the best, no matter where I looked.”

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Posted 11 years ago

“Item was delivered when it was supposed to and functions great!”

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Posted 11 years ago

“The SR503-4 3 zone switch appears to be a quality unit. No operational issues so far.”

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Posted 11 years ago

“My house was built in the 1940s, and upstairs/downstairs are still being serviced by Bell and Gossett pumps from the era.”

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Posted 12 years ago

“Brought this to handle our 2 zones house. We converted a 2 family apartment to a single family home.”

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Posted 13 years ago