Htpg ph100-80 Ng Water Heater 100000 Btu/h 80 Gallon

Product Description

The HTPG ph100-80 is an 80-gallon stainless steel natural gas water heater with a modulating BTU range of 35,000 to 100,000 BTU/h and a five-to-one turndown ratio. It is designed for both residential and commercial hot water systems requiring high thermal efficiency in a compact, lighter-weight tank. The unit carries an Energy Star certification and achieves up to 96% thermal efficiency, meaning nearly all of the fuel consumed goes directly toward heating water. Licensed plumbers and mechanical contractors are the primary installers. The stainless steel construction improves longevity and heat transfer compared to glass-lined alternatives.

The ph100-80 is suited for residential and light commercial applications where high-efficiency natural gas water heating is required. It supports power vent and direct power vent configurations using standard PVC or CPVC vent pipe, keeping installation material costs low. The unit ships with an intake PVC tee with screens and an exhaust PVC coupling with screens. An LP conversion kit is included for natural gas models if a propane conversion is needed on site. The modulating burner maintains high system efficiency even during low-demand periods, making it a practical choice for variable-load installations.

Key Features

• Up to 96% thermal efficiency with Energy Star certification
• Five-to-one modulating burner turndown ratio for efficient low-load operation
• Stainless steel tank construction for extended service life and improved heat transfer
• Compatible with PVC and CPVC venting — power vent or direct power vent configurations
• Ships with intake and exhaust PVC fittings with screens installed
• LP conversion kit included (natural gas models)
• Complies with SCAQMD Rule 1146.2 ultra-low NOx emissions standards

Compatibility

The ph100-80 is an 80-gallon model in the Phoenix water heater line, available alongside 55-gallon and 119-gallon configurations. Suitable for both residential and commercial natural gas hot water systems requiring high-efficiency, modulating burner operation.

Installation Notes

Installation should be performed by a licensed plumber or mechanical contractor in accordance with local plumbing codes and the applicable provisions of the International Plumbing Code (IPC). Shut off the gas supply and cold water inlet before beginning any service or replacement work. Vent connections must be made with approved PVC or CPVC materials per the manufacturer venting guidelines — do not use metal flue pipe with this unit. Verify local jurisdiction requirements for seismic strapping, relief valve discharge piping, and condensate drainage before completing the installation.

Technical Specifications

• Tank Capacity: 80 gallons
• BTU Input Range: 35,000 to 100,000 BTU/h
• Thermal Efficiency: Up to 96%
• Fuel Type: Natural gas (LP conversion kit included)
• Turndown Ratio: 5 to 1
• Vent Material: PVC or CPVC
• Vent Configuration: Power vent or direct power vent
• Tank Material: Stainless steel
• Emissions Compliance: SCAQMD Rule 1146.2 ultra-low NOx
• Certification: Energy Star
• Residential Warranty: 7 years limited
• Commercial Warranty: 3 years limited

Standard Information

• Brand: HTPG
• Manufacturer Part Number: ph100-80