Enter your e-mail address below to have your password reset. You will receive an e-mail with a new temporary password in it.
Your new password is on its way. If you have problems accessing your account, please contact us at 1-888-757-4774 and we'll help you out.
I'm sorry, your e-mail was not found in our system.
If you think this is a mistake, please contact customer service at 1-888-757-4774 or via e-mail here.
Location: 185 Price Parkway, Farmingdale, NY 11735
Hours: 8:00AM - 4:00PM, Mon - Fri (CLOSED MONDAY - HAPPY LABOR DAY!)
This product does not comply with the "Safe Drinking Water Act,"
which requires that products used in any system providing water for human
consumption (drinking or cooking) to meet low-lead standards.
Please check the box below to confirm you are aware of that this item is for non-potable water applications only.
This product will NOT be used in the installation or repair of a potable water (human consumption) application.
You must agree to this statement in order to purchase this product.
We accept returns of any unused and unopened merchandise within 5 days of receipt and accept returns of defective merchandise within 14 days of receipt. All returns must be accompanied by a Return Goods Authorization, which may be obtained by contacting a customer service representative either by phone or by e-mail. All manufacturer warranties are honored and claims should be made through SupplyHouse.com.
See full Return Policy.
Add this item to your cart to calculate shipping cost.
The entire staff at SupplyHouse is committed to doing everything we can to ship your order out accurately and as quickly as possible. Most orders ship within 24-48 hours and expedited orders go out the same day when placed before 3:00pm EST. If an item is back ordered for any reason, you will be notified via e-mail. Please note in the special instructions at checkout if you need receive your order by a specific date.
See full Shipping Policy.
SupplyHouse.com is committed to providing you with the highest quality products at the lowest prices available. We are committed to competitive prices and will honor our Low Price Guarantee if you find an identical item at a lower price.
For complete information on our low price guarantee, go here.
There is a Minimum Advertised Price (MAP) allowed by the manufacturer on this product. Add item to cart for lowest price.
We are dedicated to protecting your order information. Because of this, all personal data that is transmitted through our site is encrypted using SSL or "Secure Socket Layer" technology which encrypts your order information to avoid the decoding of your information by anyone other than SupplyHouse.
At SupplyHouse.com, we are committed to protecting your privacy. This means that we will not distribute, sell or rent your name or personal information about you to any third party without your permission.
For complete safe shopping information, go here.
Your privacy is of great concern to SupplyHouse. We use the information you provide to process your order and to ensure that your experience on our site is as enjoyable and efficient as possible. Our primary focus and greatest concern is you, our customer. We respect your privacy and therefore do not sell, rent or loan any of your personal information to any third party.
We are committed to protecting your privacy. We use the information that we collect about you to process your orders and to provide a personalized shopping environment. When you purchase products from SupplyHouse.com or register for any SupplyHouse.com services, we automatically place you on our list to receive e-mail updates about special offers, new products, and new services.
A credit card Identification Number is an added safeguard for your credit card purchases. Depending on the type of credit card you use, it is the 3- or 4-digit number printed on the back or front of your credit card. For most online credit card purchases from us, the Identification Number is required information.
MasterCard: Your identification number is the 3-digit number found on the back of your credit card near the signature panel.
Visa: Your identification number is the 3-digit number found on the back of your credit card near the signature panel.
American Express: Your identification number is the 4-digit number found on the far right on the front of your credit card.
Zones are the number of areas that you want to control independently of each other. If two rooms can be controlled together, they can be one zone; if they need to be controlled separately, they should be separate zones.
Amperage, or amps, refers to the amount of electricity flowing through the wires.
Voltage, or volts, is a measurement of the difference between two electric fields (in heating terms, the difference between the Earth's electrical field and the electricity running through your wires).
Taco Switching Relays combine clearly-labeled PC board layouts with advanced features that allow you to completely customize your system. And whether you're using basic priority switching, Taco Plug-In PowerPort Cards or add-on power controls, tailoring the system has never been easier. External indicator lights give you instant diagnostic feedback, making service calls or new installation start-ups a snap. All switching relays are UL listed, use standard "ice cube" replaceable relays and are compatible with conventional and programmable thermostats. For larger jobs, switching relays can be expanded up to 20 zones with priority. With the exclusive Taco PowerPort Plug-In Cards, you can easily add such features as post purge, priority protection and pump exercise. Any expandable switching relay can also interface with the Boiler Reset Control and Injection Mixing Add-On Power Controls. Mix-and-match as needed to customize the system. Features include:External Indicator LightsSwitchable PrioritySimplified WiringFully Enclosed Snap-Out RelaysCompact DesignFuse Protected100% Factory TestedIsolated End SwitchContractor Friendly PC Board LayoutUniversal Thermostat CompatibilityUL and CSA Approved24 Volt Power Input or Output TerminalExtended 3 Year WarrantyMade in the USA
(based on 64 reviews)
of respondents would recommend this to a friend.
Reviewed by 64 customers
Displaying reviews 1-10
Back to top
Previous | Next »
Comments about 1 Zone Switching Relay:
This is a redesigned SR501 relay. There are no small fuses. Overall it appears to be higher quality. I hope that it proves to be more reliable than TACO's older version. The older ones were problematic on the low voltage side. (They seemed to overheat).
Bottom Line Yes, I would recommend this to a friend
Was this review helpful? Yes / No
- You may also flag this review
from Central WI
Comments about 4 Zone Switching Relay:
i'm controling my boiler and 4 in floor heating zones easy hookup works efortlesly
(1 of 2 customers found this review helpful)
It works great.
from Scarsdale, NY
Replace the old relay and more reliable.
from willow springs il.
was easy to hook up easy to use! shipping took along time. (3) days before they shipped...............
The proper hookup for my system and thermostat were not included in the instructions, but once I used my meter to figure out how the relay worked, I got it up and running and it works great. I used a 519 One Stage thermostat and the instructions for that and the relay made no sense, so I had to figure it out on my own, but not that big of a problem to do so. Everything works great now.
I am perfectly satisfied with Pex
from superior, WI
I have been updating my 30 year old boiler and have relied on Pex for controllers, pumps and s soon to br purchasef exhaust fan snd other shelf items. I appreciate the quick turn-around on my order and the quality/price. I would highly recommend Pex Supply to anyone.
from holyoke, ma
Great product and great price. Shipped fast and got the products in only a few days. Thanks!
If app. is a 24 Vac source only - Beware
By DIY Brad
from Mid-coast Maine
I was using this unit as a way to tidy up some wiring while providing a 24 Vac source for a controller. If zone 1 is not being used, you MUST remove the jumper powering the zone1 area of the board or the unit will not provide reliable 24 Vac upon power loss & recovery. (An unusual use of the unit, but support was unaware of this issue.)
A reliable product
from Reno, NV
The Taco SR501 has and is a very reliable product. I have utilized this product on hydronic systems for fan coils and single zone use for the past 15 years. No issues have been encountered todate with this product.
(0 of 1 customers found this review helpful)
Good and reliable
from New City, NY
I like this switching relay instead of the ARGO or Honeywell models because of the LED indicators. Customers like to see visual status of system operation.
Do you have questions about this product?
get answers from real customers and in-house experts with AnswerBox.
Know the answer? Answer this question
Do you have a question about this product?
Subscribe to our Channel
Like Us on Facebook
Visit Our Blog
At SupplyHouse.com, our goal is to bring you the highest quality plumbing, heating and HVAC supplies at competitive prices. Our product catalog includes PEX Plumbing Supplies, Radiant Heat Supplies, VisionPro Honeywell Thermostats, Taco pumps and mini-split air conditioners. If there are items you are looking for but can't find on our website, please contact our Customer Service Representatives & we will do our best to find what you need.
© 2014 SupplyHouse.com