Grundfos ALPHA CS 15-55 Comfort Pump
Instant hot water at every faucet — no dedicated return line needed.
Regular Price
$1,199
Save $100 with installation
Bundle with installation
Add to a water heater install and pay only $1,099
Specifications
About This Product
The Grundfos ALPHA CS 15-55 is a comfort recirculation pump designed for homes without a dedicated hot water return line. It installs at the water heater and works with a thermally-actuated Comfort Valve installed under the farthest fixture, creating a recirculation loop through your existing cold water line. No new pipes required. Features built-in Bluetooth, AUTOADAPT technology, FLOWSENSE diagnostics, and a programmable digital timer with battery backup.
Key Benefits
- No dedicated return line required — works with existing cold water line
- Instant hot water at every faucet
- AUTOADAPT learns your usage patterns to optimize energy use
- FLOWSENSE detects low-flow conditions and alerts you
- Programmable timer — only runs when you need it
- Built-in Bluetooth for monitoring and control
Frequently Asked Questions
What is the Grundfos ALPHA CS 15-55 and how does it work?
The Grundfos ALPHA CS 15-55 is a comfort recirculation pump that provides instant hot water at every faucet in homes without a dedicated hot water return line. It installs at the water heater and uses a thermally-actuated Comfort Valve installed under the farthest fixture to create a recirculation loop through the existing cold water line — no new pipes required.
How much does it cost to add a Grundfos ALPHA CS 15-55 to my water heater installation in Southern California?
Adding a Grundfos ALPHA CS 15-55 Comfort Pump to your water heater installation costs $1,099 when bundled with a new water heater installation by THE Water Heater Company. The regular standalone price is $1,199.
What is the difference between the Grundfos ALPHA CS and the ALPHA HWR?
The Grundfos ALPHA CS 15-55 is designed for homes without a dedicated hot water return line — it creates a loop through the existing cold water line using a Comfort Valve. The Grundfos ALPHA HWR series is designed for homes that already have a dedicated hot water return line. If you are unsure which applies to your home, your TWHC technician will verify on site.
Does the Grundfos ALPHA CS 15-55 increase my energy bill?
The Grundfos ALPHA CS 15-55 uses AUTOADAPT technology to learn your household's hot water usage patterns and only runs when needed. With a programmable digital timer, you can further restrict operation to peak usage hours, minimizing any impact on your energy bill.
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Best value when added at time of water heater installation — $1,099 vs. $1,199 standalone.
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