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Four-Zone Switching Relay with Priority, 120 VAC Reviews

4.7 Rating 134 Reviews
I was so worried about the issues that I was having with my Solar Hot air/Water system. When I got on the phone with the lady, I was more than impressed. She new exactly the issue and directed me in the Right direction. THANK YOU TACO FOR YOUR PROFESSIONAL WORKERS!!!
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Posted 9 months ago
I was sent a taco relay that was from 2013
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Posted 1 year ago
First unit was defective (a status light was not working). Returned and replaced (quickly and at no charge). Incurred a second installation fee from plumber. I recommend the unit but believe I should have been reimbursed by the manufacturer or seller for the second installation fee.
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Posted 1 year ago
Replaced my old Taco relay. Works great!
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Posted 1 year ago
Needed to add single zone to radiant heat worked great easy install.
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Posted 1 year ago
Tell you if power is on without you getting meter, tell you when zone is calling. Should have more zone capability.
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Posted 1 year ago
The Taco one zone switching relay does the job well, is reasonably priced, esthetically pleasing, and I love the red and green diodes for operational condition.
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Posted 1 year ago
If you're in the business zoning with pumps ,here’s a piece of advice—grab yourself a Taco SR504-4 Switching Relay. This little gizmo is the heavyweight champ of zoning solutions. It comes with these nifty PowerPort Cards and has external lights to tell you what's what at a glance. And the layout on the PC board? It's like they designed it with the contractor in mind—straightforward and no fuss. Hook it up with the old reliable 00 family of circulators and thermostats
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Posted 1 year ago