A.O. Smith | Products & Service

Consistent, easy-to-install hot water — no gas line required.

For homes without natural gas service, or for homeowners who prefer the safety and simplicity of electric operation, A.O. Smith’s ProLine® electric tank water heaters deliver exceptional reliability without the need for gas lines or external venting! Available in capacities from 20 to 80 gallons, these units can be installed almost anywhere electrical access is available, including crawl spaces, utility closets, and under-counter applications.

• Capacities from 20 to 80 gallons – compact specialty models available for tight spaces
• No gas line or external venting needed – flexible installation throughout the home
• Blue Diamond® glass lining and CoreGard™ stainless steel anode rod standard
• ProLine® XE models with enhanced insulation and smart grid-ready capability on select units
• ProLine® Master series with increased anode protection for demanding water quality conditions
• 6 to 10-year limited tank warranties depending on model tier

Endless on-demand hot water — no storage tank, no standby heat loss.

A.O. Smith’s ProLine® tankless water heaters eliminate the standby energy waste of traditional tank units by heating water only when you need it. Available in both natural gas/propane condensing models and electric configurations, these compact wall-mounted units free up valuable floor space while delivering a continuous supply of hot water – no running out mid-shower!

• On-demand heating eliminates standby heat loss – up to 40% energy savings vs. standard tank heaters
• Adapt®+ gas condensing models with X3® Scale Prevention – industry-leading 15-year heat exchanger warranty
• UEF ratings up to 0.93 on condensing gas models
• BTU outputs from 160,000 to 199,000 for whole-home gas applications
• Ultra-Low NOx burner designs meet strict emissions standards
• Electric tankless models for point-of-use, supplemental, or smaller whole-home applications
• Compact wall-mounted design reclaims floor space from bulky storage tanks
• Expected service life of 15 to 20 years with proper maintenance

The most energy-efficient electric water heater available — and eligible for major incentives.

A.O. Smith’s ProLine® XE Voltex® and Voltex® MAX heat pump water heaters represent the highest efficiency tier in the entire residential water heating category. Instead of generating heat directly from electricity, these hybrid units extract warmth from the surrounding air and transfer it into the water, making them up to four times more efficient than a standard electric water heater and earning ENERGY STAR® certification on all models!

• Up to four times more efficient than standard electric water heaters – UEF ratings up to 3.88 on Voltex® MAX
• Uses up to 70% less electricity than a conventional electric tank heater
• ENERGY STAR® certified across the entire Voltex® lineup
• Federal tax credit up to $2,000 (QM code A5X5, IRS Form 5695) plus local utility rebates
• Available in 50, 66, and 80-gallon configurations
• Voltex® MAX Smart Valve Technology – remote monitoring, leak detection, demand-response ready
• Backup electric elements for reliable performance during peak demand or cold weather
• 10-year limited tank and parts warranty on Voltex® MAX models