120 Gallon - 500,000 BTU Shield ASME Commercial Water Heater (Nat Gas) Zoom

120 Gallon - 500,000 BTU Shield ASME Commercial Water Heater (Nat Gas)


Brand: Lochinvar

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Capacity (Gallons): 120
BTU Input: 500000
Fuel Type: Natural Gas
GPH @ 100 Deg F Rise: 582
Water Connection: 2"
Gas Connection: 1"
Vent Size: 4"
Weight (lbs): 875 lbs
Width: 34"
Warranty: 3-Year Limited Warranty/ 1-Year Parts Warranty
Height (Inches): 80
Max Pressure (PSI): 150
Vent Type: IV/PVC
Construction: Glass-Lined Steel Tank
Application: Plumbing

Description for Lochinvar SNA501-125

**This product qualifies for the Federal Tax Credit. Please see the bottom of this description for tax credit details.

The SHIELD commercial water heater delivers best-in-class innovation from Lochinvar. It operates at 96% thermal efficiency, and provides a 100% effective defense against a water heater's worst enemy - lime scale buildup inside the tank.

Lime scale buildup insulates the water from the heat source, decreasing thermal efficiency, which increases operating costs. Additionally, the rate of scaling increases with temperature and usage. Just a ¼" of lime scale buildup will cause increased fuel consumption and raise operating costs as much as 25%. Lime scale buildup also requires periodic acid washes in the tank that will simply result in a shorter useful life of the equipment. Because SHIELD has no flue tubes inside the tank, the impact of lime scale is eliminated, ensuring high efficiency and low operating costs throughout its life cycle.

SHIELD uses the industry's most advanced stainless steel heat transfer system. Sealed combustion technology delivers a quiet and environmentally friendly supply of heat to the system. Plus, with drawdown capacity as much as 15% higher than typical tank-type heaters, you get more usable hot water than any other competing models. The result is quiet, long-lasting green performance - life cycle efficiency that keeps saving money, year after year.


  • Modulating Burner with 5:1 Turndown
  • Operates at Temperatures up to 180 deg F for Sanitizing Applications
  • Stainless Steel Heat Exchanger
  • Zero Clearances to Combustible Material
  • PVC, CPVC and Stainless Steel Venting up to 100 Equivalent Feet
  • Direct-Vent Sealed Combustion
  • Brass Drain Valve
  • Rooftop and Sidewall Venting
  • Sidewall Vent Terminal
  • Room Air Venting up to 100 Equiv. Feet
  • Advanced Electronic Control, with:
    • 2-Line, 16-Character LCD Display
    • Time Clock
    • Night Setback
    • Alarm Contacts
    • Runtime Contacts
    • Manual Reset High Limit
    • 3 Temperature Sensors
    • Flue Temperature Sensor
  • Low-NOx Operation
  • Low Gas Pressure Operation
  • Direct-Spark Ignition
  • Certified for Installation on Combustible Floors
  • ASME Temperature and Pressure Relief Valve
  • 8-Foot Power Cord
  • 3-Year Limited Warranty, 1-Year Parts Warranty
**Federal Tax Credit Information:

The purchase and installation of this energy-efficient product in your home qualifies you for a Federal Tax Credit.

The 2010 tax credit is worth 30% of the item's total cost (including installation), up to a maximum of $1,500. The credit is applicable on products placed in service between January 1, 2009 and December 31, 2010 and installed in your primary residence.

The 2011 tax credit extension is worth 10% of the item's total cost up to of $500 (installation cost is not included). The credit is applicable on products placed in service between January 1, 2011 and December 31, 2011 and installed in your primary residence. There is a $500 cap for the 2011 tax credit extension, so if you have claimed $500 or more since January 1, 2005, you are not eligible for the credit. Additional caps have been placed on specific product categories, including a $300 cap for water heaters and a $150 cap for boilers.

Since this non-solar gas water heater has either an Energy Factor greater than or equal to 0.82 or a thermal efficiency of at least 90%, it qualifies for the Federal Tax Credit.

To apply for the tax credit, you must file and submit the relevant tax forms. For products "placed in service" in 2011, you would take the tax credit on your 2011 income taxes. Remember to save your receipts and the Manufacturer's Certification Statement for your records.

Please see Federal Tax Credits for Consumer Energy Efficiency for additional information.

PLEASE NOTE: The product weighs 875 lbs. and may require the use of a
lift gate.
If you do require a lift gate at your delivery, you'll have the option to add this FREE of charge when you checkout.

120 Gallon - 500,000 BTU Shield ASME Commercial Water Heater (Nat Gas)


by PowerReviews
Lochinvar125 Gallon - 500,000 BTU Shield ASME Commercial Water Heater (Nat Gas)

(based on 1 review)

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Excellent product

By Gerry

from New York

Verified Buyer

Comments about 125 Gallon - 500,000 BTU Shield ASME Commercial Water Heater (Nat Gas):

Recently installed in a large laundromat. High quality unit. Very fast recovery rate. Very efficient and is fitted with night setback. It also has some very usefull auxilliary contacts for # of starts,remote lockout,etc. Unit just fits through a 36 X 80 doorway. You can get cheaper units but, they don't have sealed combustion or a stainless steel heat exchanger.

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