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14-1/4" (6)
18" (6)
20-1/2" (22)
21-3/4" (27)
22" (3)
24" (7)
25-1/4" (1)
25-3/8" (1)
25-1/2" (26)
26" (1)

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Electric (196)
Natural Gas (64)
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BTU Input

70,000 - 80,000 (9)
90,000 - 100,000 (2)
100,000+ (61)

Capacity (Gallons)

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10 - 19 (20)
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$100 to $200 (2)
$200 to $300 (12)
$300 to $400 (2)
$500 to $600 (1)
$1000 to $1500 (25)
$1500 to $2000 (9)
$2000 to $2500 (10)
$2500 to $3000 (13)
$3000 to $3500 (1)
$3500 to $4000 (5)

AO Smith Commercial Water Heaters

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Product Image of 80 Gallon LTE-80D Light-Service Commercial Electric Water Heater - Tall (1PH, 12.2kW, 277V)
$1,621.16 each
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Product Image of 119 Gallon LTE-120D Light-Service Commercial Electric Water Heater - Tall (1PH, 12.2kW, 277V)
$1,946.88 each
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Product Image of 100 Gallon BTH-199 199,000 BTU Cyclone FLEX Condensing Commercial Gas Water Heater w/ Adaptive Gas Technology (NG/LP)
$10,804.00 each
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Product Image of UPVA-18K Point-of-Use Commercial Electric Tankless Water Heater (1PH/1.75kW/120V)
$267.59 each
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Product Image of 60 Gallon BTH-120 120,000 BTU Cyclone Mxi Commercial Gas Water Heater (NG)
$8,075.00 each
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Product Image of UPVA-35K Point-of-Use Commercial Electric Tankless Water Heater (1PH/3.5kW/120V)
$267.59 each
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Product Image of UPVA-24K Point-of-Use Commercial Electric Tankless Water Heater (1PH/2.4kW/120V)
$267.59 each
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Product Image of 100 Gallon BTH-199 199,000 BTU Cyclone Mxi Commercial Gas Water Heater (LP)
$10,844.00 each
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Product Image of UPVA-70E Point-of-Use Commercial Electric Tankless Water Heater (1PH/7kW/240V)
$276.99 each
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Product Image of 50 Gallon BTX-100 100,000 BTU Cyclone Xi Power Direct Vent Condensing Commercial Gas Water Heater w/ Modulating Burner (NG/LP)
$5,377.61 each
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Product Image of 10 Gallon Compact DEL-10 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (1PH, 3kW, 208V)
$1,044.63 each
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Product Image of UPVA-35E Point-of-Use Commercial Electric Tankless Water Heater (1PH/3.5kW/240V)
$267.59 each
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Product Image of 19 Gallon Compact DEL-20 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (1PH, 6kW, 208V)
$1,189.53 each
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Product Image of 74 Gallon BT-80 75,100 BTU Commercial Gas Water Heater (NG)
$3,678.00 each
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Product Image of UPVA-45E Point-of-Use Commercial Electric Tankless Water Heater (1PH/4.5kW/240V)
$276.99 each
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Product Image of UPVA-90E Point-of-Use Commercial Electric Tankless Water Heater (1PH/9kW/240V)
$279.72 each
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Product Image of UPVA-110E Point-of-Use Commercial Electric Tankless Water Heater (1PH/11kW/240V)
$352.94 each
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Product Image of 100 Gallon BTR-197 199,000 BTU Commercial Gas Water Heater (NG)
$9,495.00 each
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Product Image of 19 Gallon Compact DEL-20 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (1PH, 4.5kW, 208V)
$1,158.18 each
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Product Image of 100 Gallon BTH-250 250,000 BTU Cyclone Mxi Commercial Gas Water Heater (NG)
$12,614.00 each
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Product Image of 48 Gallon DEL-50 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (3PH, 6kW, 208V)
$2,721.14 each
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Product Image of 98 Gallon BT-100 75,100 BTU Commercial Gas Water Heater (NG)
$4,557.00 each
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Product Image of UPVA-30K Point-of-Use Commercial Electric Tankless Water Heater (1PH/3.0kW/120V
$267.59 each
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Product Image of UPVA-110Y Point-of-Use Commercial Electric Tankless Water Heater (1PH/11kW/277V)
$352.95 each
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Product Image of 100 Gallon BTH-150 150,000 BTU Cyclone Mxi Commercial Gas Water Heater (NG)
$10,987.00 each
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Product Image of 19 Gallon Compact DEL-20 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (1PH, 3kW, 208V)
$1,189.41 each
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Product Image of 60 Gallon BT-6054,000 BTU Commercial Gas Water Heater (NG)
$2,505.27 each
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Product Image of UPVA-55E Point-of-Use Commercial Electric Tankless Water Heater (1PH/5.5kW/240V)
$276.99 each
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Product Image of UPVA-55Y Point-of-Use Commercial Electric Tankless Water Heater (1PH/5.5kW/277V)
$276.99 each
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Product Image of 33 Gallon DEL-30 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (3PH, 6kW, 240V)
$2,164.03 each
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Product Image of 35 Gallon DEL-40 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (3PH, 6kW, 208V)
$2,683.75 each
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Product Image of 71 Gallon BTR-120 120,000 BTU Commercial Gas Water Heater (NG)
$7,124.00 each
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Product Image of 48 Gallon DEL-50 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (3PH, 4.5kW, 208V)
$2,721.13 each
In Stock
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Product Image of 35 Gallon DEL-40 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (3PH, 4.5kW, 208V)
$2,473.75 each
In Stock
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Product Image of 10 Gallon Compact DEL-10 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (1PH, 3kW, 277V)
$1,044.63 each
In Stock
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Product Image of UPVA-40Y Point-of-Use Commercial Electric Tankless Water Heater (1PH/4kW/277V)
$276.99 each
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Product Image of UPVA-80Y Point-of-Use Commercial Electric Tankless Water Heater (1PH/8kW/277V)
$279.72 each
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Product Image of 19 Gallon Compact DEL-20 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (1PH, 6kW, 240V)
$1,190.27 each
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Product Image of 10 Gallon Compact DEL-10 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (1PH, 1.5kW, 120V)
$1,086.33 each
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Product Image of 19 Gallon Compact DEL-20 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (1PH, 2.5kW, 120V)
$1,158.18 each
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Product Image of 6 Gallon DEL-6 Dura-Power Commercial Electric Water Heater - Lowboy (1PH, 1.5kW, 120V)
$1,025.59 each
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Product Image of 50 Gallon BTX-80 76,000 BTU Cyclone HE Commercial Gas Water Heater (NG)
$3,784.50 each
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Product Image of 6 Gallon Compact DEL-6 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (1PH, 2.5kW, 120V)
$1,025.38 each
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Product Image of 66 Gallon LTE-66D Light-Service Commercial Electric Water Heater - Tall (1PH, 12.2kW, 277V)
66 Gallon LTE-66D Light-Service Commercial Electric Water Heater - Tall (1PH, 12.2kW, 277V)
SKU: LTE-66D
AO Smith
SKU: LTE-66D
Brand: AO Smith
(1)
$1,506.94 each
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Product Image of DRE-80, 80 Gallon 18 KW Lime Tamer Commercial Electric Water Heater (208V, 3PH)
$6,255.39 each
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Product Image of 10 Gallon Compact DEL-10 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (1PH, 2.5kW, 120V)
$1,071.89 each
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Product Image of 19 Gallon Compact DEL-20 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (1PH, 1.5kW, 120V)
$1,189.90 each
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Product Image of 19 Gallon Compact DEL-20 Dura-Power Commercial Electric Water Heater - Light Duty Lowboy (1PH, 2.5kW, 208V)
$1,204.28 each
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More About AO Smith Commercial Water Heaters

AO Smith Commercial Water Heaters deliver high-capacity hot water for restaurants, offices, apartment buildings, and other heavy-use spaces. Available in gas, propane, and electric models to match your fuel source and system needs. 

Key Features
  • Multiple Fuel Options - Natural gas, propane, and electric 
  • Fast Recovery Rates - Keeps up with heavy, repeated use 
  • Durable Build - Corrosion-resistant tanks for long service life 
  • Smart Controls - Digital or mechanical options for easy temp control 
  • Built for Service - Accessible components speed up maintenance
Real-World Benefits
  • Powers through peak demand with consistent output 
  • Ideal for commercial kitchens, gyms, or multi-unit buildings 
  • Lowers replacement costs with rugged, long-lasting designs 
  • Flexible install options across gas and electric setups 
  • Install & Maintenance Tips 
  • Flush tanks quarterly to reduce scale buildup 
  • Check anode rods annually to extend tank life 
  • Size the heater for peak usage, not just average load
FAQs

Q: Can these run in a recirculation loop? 

 A: Yes, most models support continuous flow setups. 

Q: What fuel types are available? 

 A: You'll find electric, natural gas, and propane options. 

Q: Can I install this in a multi-family home? 

 A: Yes, it's a strong choice for any high-demand application. 

Q: How long do commercial heaters last? 

 A: With maintenance, they typically run 10 to 15 years. 

Q: Do they come with thermostats? 

 A: Most models include digital or manual controls for temp settings