18th Jul 2026, 10:20 PM
Watts ETX-15 2.1-Gallon Non-Potable Expansion Tank for Closed-Loop Systems
Price may vary by location, shipping cost, and availability.
91% Off
$56.33
$599.99
Highest: $58.29
Average: $56.71
Lowest: $55.99
Price History Graph
Offer Price Prices
Lowest: -
Average: -
Highest: -
Price History Information
You can check the price history of Watts ETX-15 2.1-Gallon Non-Potable Expansion Tank for Closed-Loop Systems here. This product's current Price in USA is $56.33. The average and highest prices are $56.71 and $58.29 respectively.
| Lowest Ever Price | $55.99 |
|---|---|
| 9th Feb 2026 | |
| Average Price | $56.71 |
| Based on 162 days price tracking | |
| Highest Price | $58.29 |
| 22nd Feb 2026 | |
Price History of All Variants of Watts ETX-15 2.1-Gallon Non-Potable Expansion Tank for...
Offer Price: $124.20
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Offer Price: $56.33
Watts ETX-15 2.1-Gallon Non-Potable Expansion Tank for Closed-Loop Systems
Get Deal
Current Price in USA
| Price | $56.33 |
|---|---|
| MRP | $599.99 |
| Savings | $543.66 |
| Discount | 90.61% |
Product Information
Details
| Product Name | Watts ETX-15 2.1-Gallon Non-Potable Expansion Tank for Closed-Loop Systems |
|---|---|
| Store Product Code | B0025POS7E |
| Store Name | amazon.com |
| Brand | Watts |
| Rating | 9.2 / 10 |
| Category | Water Heaters |
| Product Manufacturer | Watts |
| Model Number | 66605 |
| Model Number | 66605 |
| Color | Gray |
| Dimensions | 8.5 x 8.5 x 8.5 inches |
Features
- This non-potable water expansion tank is for closed loop hydronic heating system piping to control the thermal expansion of hot water and maintain system pressure below the relief sett of the relief valve
- The carbon steel tank is pre-charged at 12 psi, has a 2.1 gallon volume, and features a durable expansion membrane preventing minimizes loss of the air change and ensures long and trouble-free life for the system
- Made of carbon steel with epoxy finish, mounts to supply piping, with 1/2 inch MNPT system connection and .302-32 inch charging valve connection for on-site charging of the tank
- Maximum pressure 75 psi and can be used in residential or commercial hydronic heating systems
- Use in tandem with your hot water heater to absorb increased water volume ensuring long and trouble-free life for the system
Images
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Rating and Reviews
9.2 Based on 616 reviews
Watts ETX-15 2.1-Gallon Non-Potable Expansion Tank for has 9.2 rating out of 10. This average rating is consist of 616 individual ratings. You can rate this product at product review page.
* Predictions is created on based of past prices and trends, it does not guarantee that it will happen. These are just prediction for theoretical information only.