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NCM-300 Control Panel
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NCM-300 has been discontinued
Discontinued January 13, 2026
This product was discontinued by the manufacturer.
MANUALS (2)
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Direct Replacement:
Product Highlights
–
2 to 3
24V
Description
–
The NCM 300 panel provides intelligent control of Heat Pump or Conventional forced air zoning systems at a maximum of three zones using motorized dampers and practically any off-the-shelf heat/cool thermostat. With features like automatic changeover, opposite system service, short cycle timers and supply air sensing capability, the NCM 300 provides a high level of performance in a non-expandable zone control panel.
Specs
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| Number of Zones: | 2 to 3 |
|---|---|
| Product Type: | Control Panel |
| Features: | Built-In Timers LED Light |
| Voltage: | 24V |
| Input Voltage: | 19-30 VAC (60 Hz) |
| Current Draw Range: | Max 14VA @ 24VAC |
| Wiring: | 18 Gauge Solid |
| Operating Temp Range: | -20°F - 160°F |
| Operating Humidity: | 0% to 95% (non-condensing) |
Questions?
Speak with a real person who will go out of the way to help!
Call or text 888-757-4774
Monday – Thursday
8am–7:45pm
Friday
9am–7:45pm
Saturday – Sunday
9am–5:45pm
Compare Similar Products
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1 Replacement Part
9" Cover for BMPLUS 3000 and NCM 300
SKU: 090515A0040
EWC Controls
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Product Reviews
4.96 out of 55 reviews
100% would recommend this product
5 star
96%
4 star
4%
3 star
0%
2 star
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1 star
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Showing 1-10 of 55 reviews
AC Control Panel
Installed to replace old/failed control panel. Perfect replacement and has additional features. Works perfectly!
Scott G
New Jersey
2 years ago
Verified Buyer
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Direst replacement/upgrade for EWC st-2d
High Quality product at a great price. Easy install. Fast shipping. I'm only using 2 dampers at this time but it's 3 damper capable.
Remme
Southwest Colorado
2 years ago
Verified Buyer
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Recommended due to compatibility with most thermostats
Gives LED lights stating which zones are running as well as which mode is calling
Rusty
Edgewater, MD
4 years ago
Verified Buyer
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I would buy this control panel again!
When I got my A/C replaced, they didn't replace the control panel. I did my research and this panel came up rated very well. Tech tech help was great. Much better than I would have every expected! I had an issue with shipping and they took care of that issue right away. If I need anything else, this is where I will be coming back over and over again!
Pete
Peachtree City, GA
4 years ago
Verified Buyer
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Great Product, Even Better Company
I purchased this control panel to replace a 25 year old Honeywell MasterTrol 3 zone controller. It is well designed, installed easily and is working perfectly. What I really want to comment on is the company, EWC Controls. I've often found that the quality of the documentation supplied with a product is a good indicator of the quality of the product and the company that makes it. No exception here. In addition to the documentation supplied with the panel, I found online a step by step guide to moving from the panel I had to this one that made the install a breeze. I have also called the tech support on a couple occasions. You're immediately connected to a tech who knows exactly how to help. This type of customer service is, in my experience, pretty hard to find. I purchased an EWC zone damper several years ago and had a similarly great experience. If I could provide more than five stars here I certainly would. Can't recommend highly enough!
Don E
Hampton, NH
4 years ago
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Great Product
I purchased this product so that my Google Nest thermostat would work with my 3 zone heating system. The instructions provide were very detailed and gave me the confidence that I could install it myself. Swapping out the old controller and replacing it with the NCM-300 was very straightforward. My thermostat and 3 zone controller are now talking to each other and working great. When I had a question the NCM tech was available and helpful. I would recommend this product to others with the same trouble with Nest thermostats and multi-zone systems.
John
Tolland, CT
4 years ago
Verified Buyer
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Works perfect
Delivered on time, easy to wire and works great
A/C Austin
Wellington FL
5 years ago
Verified Buyer
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Yes
Very good service, product and price
Joe sr
Randolph Mass.
5 years ago
Verified Buyer
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Easy replacement, solved Nest thermostat charging issue
Could not have been easier to replace my old zone control panel. And this one charges the Nest thermostats. Good product.
Shorelinejohn
CT
5 years ago
Verified Buyer
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Great product, easy to install and set up.
Great product. Easy to install, good directions, good price, very fast delivery, very good packaging.
Alan
Connecticut
5 years ago
Verified Buyer
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Product Q&A
1 Question1 Question
Q: Does this unit come with a sensor?
Asked by Luke 10 years ago
Add your answer
Verified Reply- SupplyHouse StaffA supply air sensor is included with the NCM-300.
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