Bosch GWH-425-HNO-L Tankless Water Heater, Outdoor Use

Product Description

Bosch GWH-425-HNO-L Tankless Water Heater, Outdoor Use

Ideal for households looking to maximize energy savings. New homeowners want the energy-efficient, endless supply of hot water only a gas tankless water heater can deliver. And no one has a more complete line or gives you a longer warranty than Pro Tankless by Bosch. Elegantly engineered, these units are small, lightweight, and easy to install and maintain.

Install your tankless water heater outside! The Bosch ProTankless™ GWH 425 HNO incorporates the same revolutionary hydro-generated ignition system as the GWH 425 HN, allowing the water heater to operate without a standing pilot, electricity, or a battery. However, the Bosch ProTankless ™ GWH 425 HNO is designed to be installed outside and has built-in freeze protection to 5°F.

Bosch GWH-425-HNO-L Tankless Water Heater, Indoor Use Features:
• Hydro-generated ignition
• 80% average efficiency
• No venting required - designed for outdoor installation
• Built-in freeze protection to 5° F
• Modulating gas valve - constant temperature at varying flow rates
• Available in natural gas (NG) or liquid propane (LP)
• 15-year warranty
• No Electricity Required (120VAC for freeze protection (plug in))

Bosch GWH-425-HNO-L Tankless Water Heater, Indoor Use Specifications:
• Gas Type: LP (Liquid Propane)
• Power Input -
 o NG: 28,000 - 117,000 Btu
 o LP: 28,000 - 117,000 Btu
• Minimum Flow Rate to Activate - 0.5 gallons per minute (gpm)
• Flow Rates -
 o 90° F rise / 2.1 gpm
 o 75° F rise / 2.4 gpm
 o 65° F rise / 2.9 gpm
 o 55° F rise / 3.4 gpm
 o 45° F rise / 4.2 gpm
• Energy Factor -
 o NG: .85
 o LP: .84
• Thermal Efficiency -
 o NG: 80%
 o LP: 83%
• Dimensions - 29¾"h x 18¼'w x 8¾"d
• Weight - 40 lbs.
• Ignition - Hydro-generated
• Life Expectancy - 20+ years
• Modulating Gas Valve - Yes
• Gas Connection - ¾" Male NPT
• Water Connection - ½" Male NPT
• LP Gas Pressure - Minimum: 7" WC, Maximum: 14 " WC
• NG Gas Pressure - Minimum: 11" WC, Maximum: 14" WC
• Water Pressure - Minimum: 30 PSI, Maximum: 150 PSI
• Electrical Supply - None (120VAC for freeze protection (plug in))

* Warning: Do not mount heater directly onto vinyl siding. A 6' x 4' area of vinyl siding must first be covered or replaced with wood or other non-plastic material.

* Not approved for use in mobile homes, boats, or RVs.

Product Details and Features

• Manufacturer and Model: Bosch GWH-425-HNO-L

Downloadable Product Documents