Taco SR501-4 Single-Zone Switching Relay, 120 VAC Reviews

4.9 Rating 175 Reviews

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“Easy replacement, but one wiring screw was stripped. Managed to fix it using the old unit's part.”

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Posted 11 years ago

“These are arguably the best performing relays on the market. Built solid with well laid out wiring plan for circulator zoning.”

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Posted 11 years ago

“This was a perfect replacement for our old 1970's Burnham boiler that had a Flair Mfg relay. With a little change of the wiring, we were back in service in no time.”

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Posted 11 years ago

“Our first choice.”

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Posted 11 years ago

“I have been using these relays for a while and they never disappointed me. Very good reliable relays.”

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Posted 11 years ago

“Simple, functional, and cost-effective.”

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Posted 11 years ago

“I am not a pro, but felt like one after I installed this unit. It was the finishing touch to my infloor heating upgrade.”

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Posted 11 years ago