A.O. Smith

ProMax® 40 gal. 36 in. 4.5 kW 240 V Single Phase Aluminum Water Heater

Part #AESTT40202172000  |  Manufacturer Part #9270195018


27 gal
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Product Details

  • All plumbing and electrical connections are made through back of water heater and is equipped with a PEX cross-linked polymer dip tube
  • Features compact design, side-mounted plumbing and electrical connections and is designed for installation under a counter, in a crawl space or in other tight spaces with tank capacities ranging from 6 through 20-gallons
  • Point-of-use electric water heaters are designed for low-demand, point-of-use applications, such a office lavatories or buildings with remote restrooms
  • CSA certified and ASME rated T&P relief valve
  • Meets the Federal Energy Efficiency Standards according to the current edition of the National Appliance Energy Conservation Act (NAECA) of 1992, and also meets the standby loss requirements of the U.S. Department of Energy and current edition of ASHRAE/I3ESNA 90.1 and ICC and HUD Standards
  • Certified to UL 174 for household electric water heaters
  • Six-year limited tank and parts warranty
  • Single heating element and durable, tamper resistant brass drain valve
  • Models have 2-1/2 gallon tank capacity and are equipped with a single heating element and includes a standard 110/120V cord set with 3-prong plug and wall-mounting bracket for easy installation


ANSI Specifications: ANSI Z21.22

CARB OTC LEED Compliant: No

CEC Compliant: For Sale in CA

CSA Certified: Yes

Capacity: 27 gal

Collection: ProMax®

Color Finish: White

Color Finish Category: Whites

Depth: 24 in

Diameter: 24 in

End Connection 1: NPT

End Connections: NPT

First Hour Rating: 52

GSA Approved: No

Height: 36 in

IAPMO Listed: No

Ignition System: Electronic Ignition

Material: Glass, Steel

Maximum Pressure: 150 psi

NSF Certified: No

Number Of Elements: 1

Phase: Single Phase

Power Source: Electric

Supply Pipe Connection: 3/4 in

UL Listed: Yes

Volts: 240V

Water Heater Capacity Range: 10 - 29 gal

Water Heater Type: Compact

Watts: 4500

Width: 24 in