“ Same part number, but completely different physical size/layout. It works, but I had to re-route wires. I do mostly repairs, so it's a bit of a pain. They should use a different part number. But can't complain about it's a mfg issue.”
“ It's a 4 zone system and it's easy to make a mistake.”
“ Shipping was very fast, no problems at all with the product arrived next day.”
“ If you're in the business zoning with pumps, here’s a piece of advice—grab yourself a Taco SR504-4 Switching Relay... What’s not to love?”
“ I was impressed with the professional help I received to fix issues with my solar hot air/water system. Thank you Taco!”
“ I do a lot of boiler work and this product is so easy to use for pump zoning. I have ordered other products with fast shipping.”
“ Needed to add a single zone to radiant heat. Worked great and easy install.”
“ First unit defective (light issue). Replaced quickly. Incurred a second plumber fee; wish manufacturer covered it.”
