Message to Our Customers


Model # Smart POOL 18

Internet # 203316221

18 kW Smart Pool Electric Pool Water Heater

This item has been discontinued.
The Home Depot no longer carries this specific product.

$849.00 / each


Model # Smart POOL 18

Internet # 203316221

Store SO SKU # 1000951168

EcoSmart Electric Tankless Spa and Pool Heaters are designed to provide reliable, efficient, convenient, on demand heating. EcoSmart Pool Heaters operate by utilizing the latest flow sensor technology instead of the traditional pressure switch activation to reduce the risk of burned elements, which increases its reliability and longevity. The Smart POOL series come with digital thermostat control so you can set the temperature exactly where you want it. EcoSmart Pool Heaters are compact and easy to install for a new or existing pool.

  • Flow activation
  • EcoSmart pool heaters are compact and easy to install for a new or existing pool
  • Set your temperature digitally to increments of 1°, set it and forget it
  • Compatible with EcoSmart remote control
  • Can be used as an alternative to or booster to heat pump
  • For use with pools that have up to 11,000 Gal. to calculate the gallons of your pool: surface area x average depth x 7.5
  • Refer to the orange more info tab for help with: location specification guide, installation, and troubleshooting manuals
  • Try the EcoSmart Remote Control to take control of your heating demand, save energy and water

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Water Connection Size (in.) 
2 In. NPT 
Amperage (amps) 
Electric Product Type 
Commercial & Residential 
Finish Family 
Flow Rate @ 35 F Rise (gallons/min) 
3.52 gal (US)/min 
Flow Rate @ 45 F Rise (gallons/min) 
Fuel Type 
Maximum Temperature (F) 
Minimum Activation Rate (gpm) 
Minimum Temperature (F) 
Product Weight (lb.) 
24 lb 
Residential/Commercial/industrial Use 
Residential, commercial or industrial 
Water Connection Location 
Water Heater Features 
Wall Mountable 
Wattage (watts) 
Warranty / Certifications
Certifications and Listings 
1-UL Listed,CSA Listed,ETL Listed 
ENERGY STAR Certified 
Labor Warranty 
No Warranty 
Part Warranty 
2 Year 


Rated 5.0 out of 5 by 1 reviewer.
Rated 5.0 out of 5.0 by Great Product! I purchased this heater for our above-ground pool which we setup inside a covered screen porch. Since the pool never receives direct sunlight, the water was always 5 to 10 degrees cooler than we liked. I'm happy to report that after installing this heater that this is no longer a problem! You will definitely need to visit the Eco Smart website to download their installation guides, as none were included with the product. I installed the heater myself with very little difficulty. I think the biggest source of confusion for people is the power requirements. The 18 KW model requires two 220 volt lines and the 27 KW model requires three, not "3-phase". The installation guide stated that this heater required two dual-pole 50 amp breakers, but a sticker on the case indicated 40 amp breakers. I used 40 amp breakers and have not yet had any issues. I run the heater and pool pump at night when electricity is the cheapest. For our 5,000 gallon pool, the heater had no problem raising the temperature from 78 to 85 degrees in one night! The heater will display both the incoming and exiting water temperature, and shows to be heating the water 3 degrees at a time. Also keep in mind that you cannot use a saltwater system with this heater, as it will corrode the elements and void the warranty. And any chemicals will need to be added after the heater, either through a chlorinator or floating dispenser. Adding tablets to the pump strainer should be avoided. May 5, 2015
  • 2015-05-27T10:23:04.344-05:00
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