Price History for 18 kW 3.51 GPM 240-Volt Electric Tankless Water Heater
Close
18 kW 3.51 GPM 240-Volt Electric Tankless Water Heater
EcoSmart ECO 18 is an 18-kilowatt on demand electric tankless water heater ideal for providing hot water for apartments, condominiums, townhomes and other whole home applications. It can provide between 1.8 and
Set Price Alert
Price History Chart
Recorded price history
Showing the 30 most recent of 36 recorded prices.
| Date | Price |
|---|---|
| Jun 26, 2026 | $509.00 |
| Jun 14, 2026 | $469.55 |
| Jun 11, 2026 | $509.00 |
| May 31, 2026 | $469.55 |
| May 30, 2026 | $498.82 |
| May 28, 2026 | $469.55 |
| May 27, 2026 | $498.82 |
| May 8, 2026 | $469.55 |
| May 7, 2026 | $498.82 |
| May 1, 2026 | $469.55 |
| Apr 30, 2026 | $498.82 |
| Apr 2, 2026 | $469.55 |
| Apr 1, 2026 | $498.82 |
| Mar 30, 2026 | $469.55 |
| Feb 14, 2026 | $498.82 |
| Feb 12, 2026 | $498.15 |
| Feb 11, 2026 | $483.64 |
| Feb 3, 2026 | $469.55 |
| Jan 31, 2026 | $498.82 |
| Jan 30, 2026 | $498.15 |
| Jan 29, 2026 | $483.64 |
| Jan 26, 2026 | $469.55 |
| Jan 25, 2026 | $483.64 |
| Jan 24, 2026 | $469.55 |
| Jan 22, 2026 | $498.15 |
| Jan 21, 2026 | $483.64 |
| Jan 9, 2026 | $469.55 |
| Jan 8, 2026 | $483.64 |
| Jan 5, 2026 | $469.55 |
| Jan 4, 2026 | $483.64 |
Analysis
18 kW 3.51 GPM 240-Volt Electric Tankless Water Heater price analysis
Price analysis for 18 kW 3.51 GPM 240-Volt Electric Tankless Water Heater at Home Depot: Today's price is $509.00. Current price is 4% above the 90-day average of $489.18 (a $19.82 above the running mean).
- Currently listed at $509.00, which is $39.45 above the original MSRP of $469.55.
- Current price is 4% above the 90-day average of $489.18 (a $19.82 above the running mean).
- The lowest recorded price on PriceWatchPro was $469.55 on November 2, 2025. That's $39.45 below today's price.
- The highest recorded price on PriceWatchPro was $509.00 on June 11, 2026.
- Across 35 tracked price changes, the listing has dropped 13 times with an average drop of $25.33.
- PriceWatchPro has been tracking this listing since November 2, 2025 (288 days of price history).
Related
More Plumbing deals on Home Depot
Track price history on other items shoppers are watching in this category.
Support
Home Depot FAQs
Tips for tracking this Home Depot item with alerts and price history.
How do I track price drops for Home Depot?
Pick a target price on this page and save it. We will email you when this Home Depot listing drops below your goal.
Where can I review price history?
Check the price history chart on this page to compare today’s price against recent highs and lows before buying.
Can I edit or pause alerts later?
Yes. Edit, pause, or delete alerts anytime from your PriceWatchPro dashboard after you sign in.
Snapshot
18 kW 3.51 GPM 240-Volt Electric Tankless Water Heater shopping snapshot
Track this Home Depot listing with real-time alerts, a full price history, and side-by-side savings tips.
Understand pricing trends
Use the chart above to see seasonal lows, promo spikes, and the average street price so you can time your purchase.
Set alerts that match your budget
Choose a target price and we will email you when 18 kW 3.51 GPM 240-Volt Electric Tankless Water Heater dips below that number.
Shop confidently
Review specs, availability, and recent updates from Home Depot before jumping to the store page.