Price History for tankRO - RO Water Filtration System Expansion Tank - 4 Gallon - NSF Certified Reverse Osmosis Storage Pressure Tank
Close
tankRO - RO Water Filtration System Expansion Tank - 4 Gallon - NSF Certified Reverse Osmosis Storage Pressure Tank
The tankRO 4 Gallon Water Storage Tank gives tasteless, odorless, and contaminant free water. Get a quality tank you can rely on today for your RO system. The post cured diaphragm means sterile water distributi
Set Price Alert
Price History Chart
Recorded price history
| Date | Price |
|---|---|
| Oct 21, 2026 | $35.99 |
| Jul 10, 2026 | $39.99 |
| Jul 9, 2026 | $53.99 |
| Jul 6, 2026 | $39.99 |
| Jul 5, 2026 | $52.96 |
| Jun 3, 2026 | $39.99 |
| May 30, 2026 | $47.84 |
| May 15, 2026 | $48.74 |
| Dec 19, 2025 | $39.99 |
| Dec 14, 2025 | $33.99 |
| Dec 1, 2025 | $33.99 |
| Nov 30, 2025 | $33.99 |
| Nov 17, 2025 | $33.99 |
13 recorded prices; last found in Home Depot’s data on Nov 4, 2026. How we track prices
Advertisements
Analysis
tankRO - RO Water Filtration System Expansion Tank - 4 Gallon - NSF Certified Reverse Osmosis Storage Pressure Tank price analysis
Price analysis for tankRO - RO Water Filtration System Expansion Tank - 4 Gallon - NSF Certified Reverse Osmosis Storage Pressure Tank at Home Depot: today's price of $35.99 is near the low end of the range we've recorded ($33.99 to $53.99).
- Currently listed at $35.99, which is $2.00 above the original MSRP of $33.99.
- Today's price is 8% below its average daily price over the last 90 days ($39.32).
- The lowest recorded price on PriceWatchPro was $33.99 on November 17, 2025. That's $2.00 below today's price.
- The highest recorded price on PriceWatchPro was $53.99 on July 9, 2026. Today's price is $18.00 below that peak.
- Across 12 tracked price changes, the listing has dropped 5 times with an average drop of $7.94.
- PriceWatchPro has been tracking this listing since November 17, 2025 (352 days of price history).
Advertisements
homedepot