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Maximum Input Capacity (BTU)

The Maximum Input Capacity describes how quickly the appliance will use fuel when delivering it's maximum capacity. The units may change depending on the fuel being used. -

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Energy Factor

Energy Factor (EF) is a measurement of water heater energy efficiency. The higher the energy factor, the more efficient the water heater. Learn More -

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AFUE (%)

AFUE (%)

AFUE (Annual Fuel Utilization Efficiency) measures the efficiency of combustion equipment over the entire heating season, and is calculated by dividing the amount of energy that is actually heating your home by the total energy contained in the fuel used by the boiler/furnace. Learn More -

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Vent Type

Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance. -

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Fuel Type

To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat. +

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Flow Rate at 40F Temperature Rise (GPM)

Flow rate measures how much hot water your heater can deliver. Click Learn More to determine the appropriate temperature rise to use based on your location. Learn More +

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Available (301)

(1)

Learn More About GDHE-50

A.O. Smith Tank

A.O. Smith GDHE-50 - 50 Gallon Capacity - Residential Natural Gas Tank Water Heater - Direct Vent

2% Check Discount

$4,126.00

Learn More About HA036240

Eemax

Eemax HomeAdvantage II™ Residential 240V / 36kW Electric Tankless Point of Use Water Heater - Indoor

Model: HA036240

$805.90

Learn More About BNR83-DVC-NG

Noritz

Noritz BNR83C - Residential 180,000 BTU - Natural Gas Tankless Water Heater - Concentric - Builder's Pack

Model: BNR83-DVC-NG

2% Check Discount

$1,441.00

Factory-Direct!

Learn More About BTH-500

A.O. Smith Commercial

A.O. Smith Cyclone Mxi - Commercial 119 Gallon Capacity - 499,900 BTU - Natural Gas Tank Water Heater - Direct Vent - ASME Certified

Offer Ends Tuesday, December 31

2% Check Discount

$16,929.00

Add to Cartfor Price

Learn More About NRC111-OD-NG

Noritz

Noritz NRC111 - Residential 199,900 BTU - Natural Gas Tankless Water Heater - Outdoor

Model: NRC111-OD-NG

Offer Ends Saturday, December 21

2% Check Discount

$1,779.85

$1,601.88

Learn More About SPEX3512

Eemax

Eemax FlowCo™ 120 V / 3.5 kW Non-Thermostatic Electric Tankless Point of Use Water Heater - Under Sink

Model: SPEX3512

$196.02

In-Stock

Learn More About SPEX4277

Eemax

Eemax FlowCo™ 277V / 4.1 kW Non-Thermostatic Electric Tankless Point of Use Water Heater - Under Sink

Model: SPEX4277

$238.45

Learn More About SPEX48T

Eemax

Eemax LavAdvantage™ 240V / 4.8 kW Thermostatic Electric Tankless Point of Use Water Heater - Under Sink

$306.89

Learn More About SPEX4277T

Eemax

Eemax LavAdvantage™ 277V / 4.1 kW Thermostatic Electric Tankless Point of Use Water Heater - Under Sink

Model: SPEX4277T

$310.39

Learn More About ATI-540HX3-N

A.O. Smith

A.O. Smith X3 - Residential 199,000 BTU Ultra-Low Nox - Natural Gas Tankless Water Heater with X3 Technology - Indoor

Model: ATI-540HX3-N

2% Check Discount

$1,686.00

Only 1 In-Stock

Learn More About AL35SL

Burnham AL35SL - 35 Gallon - Indirect Water Heater

2% Check Discount

$1,439.44

Learn More About ATO-540H-N

A.O. Smith

A.O. Smith ATO-540H - Residential 199,000 BTU - Natural Gas Tankless Water Heater - Outdoor

Model: ATO-540H-N

2% Check Discount

$1,269.00

Only 2 In-Stock

Learn More About 940R101

Amtrol Digital Water Heater Smart Control

$390.00

Only 5 In-Stock

Learn More About AL119CLT

Burnham AL119CLT - 119 Gallon - Indirect Water Heater

Model: AL119CLT

2% Check Discount

$3,513.00

Factory-Direct!

Learn More About AL55LT

Burnham AL55LT - 55 Gallon - Indirect Water Heater

2% Check Discount

$1,533.00

Factory-Direct!

Learn More About SPEX2412

Eemax

Eemax FlowCo™ 120V / 2.4kW Non-Thermostatic Electric Tankless Point of Use Water Heater - Under Sink

Model: SPEX2412

$198.95

In-Stock

Learn More About RTG-95DVLN

Rheem Tankless

Rheem RTG - Residential 199,900 BTU Natural Gas Whole House Ultra Low NOx Tankless Water Heater - Concentric Vent

Model: RTG-95DVLN

Offer Ends Wednesday, January 31

2% Check Discount

$1,243.00

$1,113.00

Only 3 In-Stock

Learn More About 44875

InSinkErator® HWT-00 - Instant Hot Water Tank

$375.00

Learn More About RTG20220AB

Rheem Tankless

Rheem Service Valve & Pressure Relief Kit - For RTG & RTGH Series

Model: RTG20220AB

$99.00

Factory-Direct!

Learn More About RTG20227

Rheem Tankless

Rheem Pipe Cover - For RTGH Series

Model: RTG20227

$89.00

Factory-Direct!

Learn More About SP20897

Rheem Tankless

Rheem Concentric Vent Termination Kit - 2" PVC - For RTGH Series

$35.00

Factory-Direct!

Learn More About 2PPS-HKC

DuraVent

DuraVent PolyPro - 2" Diameter - Horizontal Concentric Vent Kit

Model: 2PPS-HKC

$199.36

Factory-Direct!

Learn More About 4PPS-VKC

DuraVent

DuraVent PolyPro - 4" Diameter - Vertical Concentric Vent Kit

Model: 4PPS-VKC

$385.28

Factory-Direct!

Learn More About ATO-540H-P

A.O. Smith

A.O. Smith ATO-540H - Residential 199,000 BTU - Liquid Propane Tankless Water Heater - Outdoor

Model: ATO-540H-P

2% Check Discount

$1,269.00

Only 1 In-Stock

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