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Home  >  Hydronics  >  Water Heaters  >  Tankless
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17-3/4" x 11-1/4" x 23-5/8", 120 VAC 60 Hz, 15000 to 199000 BTU/Hr, Lead-Free, Natural Gas, Condensing, Tankless Water Heater

Durable - Primary Heat Exchanger is Constructed of a Commercial-Grade Copper that is More Resilient to Erosion

Secondary Heat Exchanger is Made of Type 316L Stainless Steel to Protect against Corrosion

Air-Fuel Ratio (AFR) Sensor

Exhaust and Water Temperature Safety Control

Overheat Cut-Off Fuse

Internal Freeze Protection System

Energy Star® Rated

Lead-Free

Item#:
122149
Manufacturer Item:
100123378
Manufacturer:
TCG - AO SMITH PRODUCTS
 
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This item has been discontinued and replaced by item 
17-3/4" x 11-1/4" x 23-5/8", 120 VAC 60 Hz, 13000 to 180000 BTU/Hr, Lead-Free, Propane, Condensing, Tankless Water Heater

Durable - Primary Heat Exchanger is Constructed of a Commercial-Grade Copper that is More Resilient to Erosion

Secondary Heat Exchanger is Made of Type 316L Stainless Steel to Protect against Corrosion

Air-Fuel Ratio (AFR) Sensor

Exhaust and Water Temperature Safety Control

Overheat Cut-Off Fuse

Internal Freeze Protection System

Energy Star® Rated

Lead-Free

Item#:
122700
Manufacturer Item:
100123453
Manufacturer:
TCG - AO SMITH PRODUCTS
 
Warranty
Catalog
Specification/Technical
Other 1
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17-3/4" x 11-1/4" x 23-5/8", 120 VAC 60 Hz, 15000 to 180000 BTU/Hr, Lead-Free, Natural Gas, Condensing, Tankless Water Heater

Durable - Primary Heat Exchanger is Constructed of a Commercial-Grade Copper that is More Resilient to Erosion

Secondary Heat Exchanger is Made of Type 316L Stainless Steel to Protect against Corrosion

Air-Fuel Ratio (AFR) Sensor

Exhaust and Water Temperature Safety Control

Overheat Cut-Off Fuse

Internal Freeze Protection System

Energy Star® Rated

Lead-Free

Item#:
123488
Manufacturer Item:
100123391
Manufacturer:
TCG - AO SMITH PRODUCTS
 
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Catalog
Specification/Technical
Other 1
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17-3/4" x 11-1/4" x 23-5/8", 120 VAC 60 Hz, 13000 to 199000 BTU/Hr, Lead-Free, Propane, Condensing, Tankless Water Heater

Durable - Primary Heat Exchanger is Constructed of a Commercial-Grade Copper that is More Resilient to Erosion

Secondary Heat Exchanger is Made of Type 316L Stainless Steel to Protect against Corrosion

Air-Fuel Ratio (AFR) Sensor

Exhaust and Water Temperature Safety Control

Overheat Cut-Off Fuse

Internal Freeze Protection System

Energy Star® Rated

Lead-Free

Item#:
126317
Manufacturer Item:
100123440
Manufacturer:
TCG - AO SMITH PRODUCTS
 
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Catalog
Specification/Technical
Other 1
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13-7/8" x 10-13/16" x 22-7/8", 120 VAC, 15000 to 120000 BTU/Hr, Lead-Free, Natural Gas, Condensing, Tankless Water Heater

Ultra-Low NOx Condensing Technology

Durable Heat Exchanger

Electronic Ignition - No Pilot Light

Air-Fuel Ratio (AFR) Sensor

Exhaust and Water Temperature Safety Control

Overheat Cut-Off Fuse

Internal Freeze Protection System

Energy Star® Rated

Lead-Free

Item#:
134374
Manufacturer Item:
100123492
Manufacturer:
TCG - AO SMITH PRODUCTS
 
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Other 1
Other 2
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13-7/8" x 10-13/16" x 22-7/8", 120 VAC, 13000 to 120000 BTU/Hr, Lead-Free, Propane, Condensing, Tankless Water Heater

Ultra-Low NOx Condensing Technology

Durable Heat Exchanger

Electronic Ignition - No Pilot Light

Air-Fuel Ratio (AFR) Sensor

Exhaust and Water Temperature Safety Control

Overheat Cut-Off Fuse

Internal Freeze Protection System

Energy Star® Rated

Lead-Free

Item#:
134378
Manufacturer Item:
100123498
Manufacturer:
TCG - AO SMITH PRODUCTS
 
Warranty
Other 3
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Other 1
Other 2
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3/4" NPT, 240 V, 18000 W, 61416 BTU/Hr, 4-Element, Commercial, Electric Tankless Water Heater

Prevents Element Failure Due to Dry Fire

Internal Air Bypass

Temporary Shutoff with Excess Air in Chamber

Mounts Easily to the Wall

No Venting Required

No T and P Valve Required

Easy Maintenance

Self Diagnostics with Leak Detection Shutdown

Easily Understood Digital User Interface

Reduces Failures and Service Requirements Due to Hard Scale Build-Up

Power-Sharing Technology Reduces Scale Deposits on the Element

Dupont Zytel® Chambers Naturally Resist Scaling Build-Up

Lead-Free

Item#:
168649
Manufacturer:
TCG - AO SMITH PRODUCTS
 
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