Honeywell AQ25744B - Zoning Control For 4 Valves With End Switches

SKU / MPN: AQ25744B


In Stock - Ships in 1-2 business days



100% Fit



HAVE A QUESTION? Our friendly team is ready to help!

Product Information

Honeywell AQ257 expansion zoning panels work with AQ2000 boiler control panels and AQ1000 communication thermostats to control up to four space heating zones. Combine with extra expansion panels and AQ2000 panel for 16 space heating zones.
  • AQ257 for zoning with zone valves with end switches Includes auto test function to test zones at system start up LED lights for visual diagnostic of zone operation Adjacent zoning panels can operate different zone equipment Easily switch from zone valves to pumps with same zoning module R-C transformer and B-B data bus terminal connections for easy expansion Zones can be set to energize a group pump via Aux Out dry contacts on main control panel or expansion control panel Zone synchronization through Zone of Greatest Demand control

What Our Customers Are Saying

Thank you for having all these small crazy little parts! I can only imagine the organization of all of this! You are appreciated!

-Kimberly Erhart 

Love this website, prompt call back and had the necessary information that I was inquiring about. And had the part as well.

-John Crowe 

I found exactly what I needed to replace the compressor of my home HVAC unit, thank you for your service and I will definitely do business with your company again.

-Valerio Tigno 

So far so good! Customer service great and site is very well laid out and easy to use. So far every part I've needed has been i stock. Thanks Voomi.

-Casey Conrad 

Glad I found your website. Saved a bunch of money on this order and will use again in future for my HVAC business.

-Gary Zitzmann 

Safety Information: Proposition 65

You may also like

  Exclusive discounts. Net 30 Credit Terms. 100% Free for Trade Professionals. Sign Up Today