0 Items in Cart
Your cart is empty.
Browse Products
Quick specs
Part Number
HA-P023
Also Known As
CB QC POU
Part Type
Control board
Application
Point-of-use electric tankless water heaters
Installation
Plug-and-play with existing connectors
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
RHEEM EEMAX & ECOSMART Control Board HA-P023
Genuine Rheem OEM Board·Intelligent Power Control
$109.01
-
- Free shipping — most items ship by the next day
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
RHEEM EEMAX & ECOSMART Control Board HA-P023
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
In stock
In most items, small items ship same day. Complete systems ship next business day.
$109.01
-
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
Quick specs
Part Number
HA-P023
Also Known As
CB QC POU
Part Type
Control board
Application
Point-of-use electric tankless water heaters
Installation
Plug-and-play with existing connectors
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
RHEEM EEMAX & ECOSMART Control Board HA-P023
Restore reliable performance to your point-of-use tankless water heater with the genuine Rheem Control Board HA-P023, also known as CB QC POU. This OEM replacement circuit board serves as the brain of your unit, precisely managing power to the heating elements, monitoring temperature, and ensuring safe, efficient operation for instant hot water.
Key Features & Benefits
- Intelligent Temperature & Power Control: Regulates heating elements based on flow and temperature demand for consistent hot water output.
- Plug-and-Play Installation: Designed for quick replacement with existing connectors — ideal for DIY or professional service.
- OEM Quality & Reliability: Manufactured to exact Rheem specifications for long-lasting durability and compatibility.
- Fixes Common Issues: Resolves problems like no hot water, unit not powering on, inconsistent temperatures, or error codes related to the control board.
Compatibility
This control board is the direct replacement for point-of-use (POU) electric tankless water heater models, including:
- Rheem and Ruud POU series
- EcoSmart POU 3.5 and POU 6
- Eemax and iHeat/Drakken point-of-use models
- Other compatible compact tankless units
Keep your compact tankless water heater running efficiently with this high-quality HA-P023 Control Board. Perfect for quick repairs and restoring on-demand hot water in bathrooms, kitchens, or other point-of-use applications.
Always confirm compatibility with your specific model number before ordering.
Key features
- Genuine Rheem OEM Board — HA-P023 (CB QC POU) for point-of-use tankless heaters
- Intelligent Power Control — regulates heating elements based on flow
- Temperature Monitoring — safe, efficient instant hot water
- Rheem, Eemax and EcoSmart Fit — direct OEM replacement
Why homeowners choose NAW
Genuine OEM parts
Every part we sell is the real thing — authorized, factory-genuine, and backed by the full manufacturer warranty.
Easy online ordering
Find your part by model number, add to cart, and get it delivered to your door — no middleman, no markup.
30-day hassle-free returns
Ordered the wrong part? Send it back within 30 days.
Help when you need it
Not sure if this is the right part? Call us at (888) 292-0874 and we’ll help you find the correct replacement.
Customer reviews
What buyers are saying
Verified reviews from customers who purchased this product.
No reviews yet
Be the first to share your experience with this product.
