A.O. Smith

Loading Image
Start Referring Today
Featured Categories
Filter By
  • Best Selling
  • Price: Low to High
  • Price: High to Low
  • Name: A-Z
  • Name: Z-A
  • Recommends Only
  • Closeouts Only
  • In-stock Only
  • Next Day Air Only
  • Availability
Learn More About A.O. Smith FPTU-50
A.O. Smith
A.O. Smith - 50 Gal. Storage - 66 Gal. First Hour Delivery - 3.42 UEF - Heat Pump Water Heater
Model: FPTU-50
4.5kW Heating Element.
20% Buy This
(3)
$1,664.00
Only 1 In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight
Free Shipping & Lift Gate
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith ATI-540HX3-N
A.O. Smith
A.O. Smith X3 - 6.2 GPM at 60° F Rise - 0.93 UEF - Gas Tankless Water Heater - Indoor
Model: ATI-540HX3-N
EnergyStar Condensing Water Heater. Ultra-Low NOx (14 ng/J or 20 ppm). Ratings: 9.5 GPM at 40° F Rise, 7.5 GPM at 50° F Rise, 6.2 GPM at 60° F Rise, 5.2 GPM at 70° F Rise. 199k Max BTU/h.
8% Buy This
(1)
$1,558.00
In-Stock
Freight Icon
Free Shipping
Learn More About Free Freight
Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith Water Filtration 100314968
A.O. Smith Water Filtration
A.O. Smith Pro - AOW-AS20 - Inline Descaler System
Model: 100314968
1" NPT Connection
6% Buy This
(3)
$180.00
In-Stock
View Details
Learn More About A.O. Smith HPTU-50N
A.O. Smith
A.O. Smith - 50 Gal. Storage - 70 Gal. First Hour Delivery - 3.42 UEF - Heat Pump Water Heater
Model: HPTU-50N
4.5kW Heating Element.
6% Buy This
(11)
$1,793.00
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight
Free Shipping & Lift Gate
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith Commercial BTH-199
A.O. Smith Commercial
A.O. Smith - 100 Gal. Storage - 305 Gal. First Hour Delivery - 97% Thermal Efficiency - Natural Gas Water Heater - Direct Vent
Model: BTH-199
261 GPH Continuous Recovery Rate at 90
6% Buy This
(1)
Add to Cart for Price
Was 
$9,985.00
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight
Free Shipping & Lift Gate
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith ATI-540H-N
A.O. Smith
A.O. Smith ATI-540H - 6.3 GPM at 60° F Rise - 0.93 UEF - Gas Tankless Water Heater - Direct Vent
Model: ATI-540H-N
5% Buy This
(14)
$1,269.00
In-Stock
Freight Icon
Free Shipping
Learn More About Free Freight
Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith ATO-540H-N
A.O. Smith
A.O. Smith ATO-540H - 6.3 GPM at 60° F Rise - 0.95 UEF - Gas Tankless Water Heater - Outdoor
Model: ATO-540H-N
EnergyStar Condensing Water Heater. Low NOx Emissions (< 40 ng/J or 55 PPM). Ratings: 9.5 GPM at 40° F Rise, 7.5 GPM at 50° F Rise, 6.3 GPM at 60° F Rise, 5.4 GPM at 70° F Rise. 189k Effective BTU/h.
5% Buy This
(1)
$1,269.00
In-Stock
Freight Icon
Free Shipping
Learn More About Free Freight
Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith HPTU-66N
A.O. Smith
A.O. Smith - 66 Gal. Storage - 79 Gal. First Hour Delivery - 3.45 UEF - Heat Pump Water Heater
Model: HPTU-66N
4.5kW Heating Element.
4% Buy This
(11)
$2,282.00
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight
Free Shipping & Lift Gate
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith HPTU-80N
A.O. Smith
A.O. Smith - 80 Gal. Storage - 86 Gal. First Hour Delivery - 3.45 UEF - Heat Pump Water Heater
Model: HPTU-80N
4.5kW Heating Element.
3% Buy This
(8)
$2,769.00
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight
Free Shipping & Lift Gate
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith Commercial BTH-500
A.O. Smith Commercial
A.O. Smith - 119 Gal. Storage - 659 Gal. First Hour Delivery - 95% Thermal Efficiency - Natural Gas Water Heater - Direct Vent - ASME Certified
Model: BTH-500A
640 GPH Continuous Recovery Rate at 90
3% Buy This
(2)
Add to Cart for Price
Was 
$17,895.00
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight
Free Shipping & Lift Gate
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith Water Filtration 100315002
A.O. Smith Water Filtration
A.O. Smith Pro - AOW-2000-R - Claryum® Replacement Filter for AOW-2000
Model: 100315002
3% Buy This
Write A Review
$126.00
Freight Icon
Subscription Eligible
Learn More
Subscription Eligible
*This product is Subscription Eligible and can be set up to auto-deliver filters to your home at a discounted price. You select the filter quality, delivery frequency, and quantity.
In-Stock
Freight Icon
Subscription Eligible
Learn More
Subscription Eligible
*This product is Subscription Eligible and can be set up to auto-deliver filters to your home at a discounted price. You select the filter quality, delivery frequency, and quantity.
View Details
Learn More About A.O. Smith Water Filtration 100314967
A.O. Smith Water Filtration
A.O. Smith Pro - AOW-3000 - Reverse Osmosis System
Model: 100314967
3% Buy This
Write A Review
$223.00
Only 1 In-Stock
Freight Icon
Free Shipping
Learn More About Free Freight
Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
View Details
Learn More About A.O. Smith GPHE-50
A.O. Smith
A.O. Smith - 50 Gal. Storage - 127 Gal. First Hour Delivery - 94% Thermal Efficiency - 0.88 UEF - Natural Gas Water Heater - Direct Vent
Model: GPHE-50
2% Buy This
(3)
$3,141.00
Factory-Direct
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight
Free Shipping & Lift Gate
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith Commercial BTH-199-LP
A.O. Smith Commercial
A.O. Smith - 100 Gal. Storage - 305 Gal. First Hour Delivery - 97% Thermal Efficiency - Liquid Propane Water Heater - Direct Vent
Model: BTH-199-LP
261 GPH Continuous Recovery Rate at 90
2% Buy This
(2)
Add to Cart for Price
Was 
$9,985.00
Factory-Direct
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight
Free Shipping & Lift Gate
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith Water Filtration 100314969
A.O. Smith Water Filtration
A.O. Smith Pro - AOW-100-R - Carbon Replacement Filter for AOW-100
Model: 100314969
2% Buy This
Write A Review
Q&A (1)
$108.00
Freight Icon
Subscription Eligible
Learn More
Subscription Eligible
*This product is Subscription Eligible and can be set up to auto-deliver filters to your home at a discounted price. You select the filter quality, delivery frequency, and quantity.
Only 1 In-Stock
Freight Icon
Subscription Eligible
Learn More
Subscription Eligible
*This product is Subscription Eligible and can be set up to auto-deliver filters to your home at a discounted price. You select the filter quality, delivery frequency, and quantity.
View Details
Learn More About A.O. Smith Water Filtration 100037597
A.O. Smith Water Filtration
A.O. Smith - AOW-S500 - Salt Based Water Softener - 49,800 Grain Capacity
Model: 100037597
Minimum Capacity/Salt: 8,650 grains/1.66 lbs - Middle Capacity/Salt: 33,410 grains/8 lbs - Maximum Capacity/Salt: 49,800 grains/15 lbs
1% Buy This
(12)
$810.00
Only 3 In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight
Free Shipping & Lift Gate
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
View Details
Learn More About A.O. Smith Water Filtration 100037605
A.O. Smith Water Filtration
A.O. Smith - AOW-S400 - Salt Based Water Softener - 34,800 Grain Capacity
Model: 100037605
Minimum Capacity/Salt: 5,210 grains/1lb - Middle Capacity/Salt: 28,775 grains/8 lbs - Maximum Capacity/Salt: 34,800 grains/15 lbs
1% Buy This
(6)
$598.00
Only 1 In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight
Free Shipping & Lift Gate
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
View Details
Learn More About A.O. Smith Water Filtration 100315008
A.O. Smith Water Filtration
A.O. Smith Pro - AOW-AS20-R - Inline Descaler Replacement Cartridge for AOW-AS20
Model: 100315008
1% Buy This
(1)
$98.00
Freight Icon
Subscription Eligible
Learn More
Subscription Eligible
*This product is Subscription Eligible and can be set up to auto-deliver filters to your home at a discounted price. You select the filter quality, delivery frequency, and quantity.
Only 4 In-Stock
Freight Icon
Subscription Eligible
Learn More
Subscription Eligible
*This product is Subscription Eligible and can be set up to auto-deliver filters to your home at a discounted price. You select the filter quality, delivery frequency, and quantity.
View Details
Learn More About A.O. Smith ATO-540H-P
A.O. Smith
A.O. Smith ATO-540H - 6.3 GPM at 60° F Rise - 0.95 UEF - Propane Tankless Water Heater - Outdoor
Model: ATO-540H-P
EnergyStar Condensing Water Heater. Low NOx Emissions (< 40 ng/J or 55 PPM). Ratings: 9.5 GPM at 40° F Rise, 7.5 GPM at 50° F Rise, 6.3 GPM at 60° F Rise, 5.4 GPM at 70° F Rise. 189k Effective BTU/h.
1% Buy This
(1)
$1,269.00
Factory-Direct
Freight Icon
Free Shipping
Learn More About Free Freight
Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith ATO-540HX3-P
A.O. Smith
A.O. Smith X3 - 6.2 GPM at 60° F Rise - 0.95 UEF - Propane Tankless Water Heater - Outdoor
Model: ATO-540HX3-P
EnergyStar Condensing Water Heater. Ultra-Low NOx (14 ng/J or 20 ppm). Ratings: 9.5 GPM at 40° F Rise, 7.5 GPM at 50° F Rise, 6.2 GPM at 60° F Rise, 5.2 GPM at 70° F Rise. 199k Max BTU/h.
1% Buy This
(1)
$1,558.00
In-Stock
Freight Icon
Free Shipping
Learn More About Free Freight
Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith Water Filtration 100315006
A.O. Smith Water Filtration
A.O. Smith Pro - AOW-3000-R - Carbon, Claryum® and Membrane Replacement Filter for AOW-3000
Model: 100315006
1% Buy This
Write A Review
$180.00
Freight Icon
Subscription Eligible
Learn More
Subscription Eligible
*This product is Subscription Eligible and can be set up to auto-deliver filters to your home at a discounted price. You select the filter quality, delivery frequency, and quantity.
Only 1 In-Stock
Freight Icon
Subscription Eligible
Learn More
Subscription Eligible
*This product is Subscription Eligible and can be set up to auto-deliver filters to your home at a discounted price. You select the filter quality, delivery frequency, and quantity.
View Details
Learn More About A.O. Smith ATI-540HX3-P
A.O. Smith
A.O. Smith X3 - 6.2 GPM at 60° F Rise - 0.93 UEF - Propane Tankless Water Heater - Indoor
Model: ATI-540HX3-P
EnergyStar Condensing Water Heater. Ultra-Low NOx (14 ng/J or 20 ppm). Ratings: 9.5 GPM at 40° F Rise, 7.5 GPM at 50° F Rise, 6.2 GPM at 60° F Rise, 5.2 GPM at 70° F Rise. 199k Max BTU/h.
1% Buy This
Write A Review
$1,558.00
In-Stock
Freight Icon
Free Shipping
Learn More About Free Freight
Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith ATO-540HX3-N
A.O. Smith
A.O. Smith X3 - 6.2 GPM at 60° F Rise - 0.95 UEF - Gas Tankless Water Heater - Outdoor
Model: ATO-540HX3-N
EnergyStar Condensing Water Heater. Ultra-Low NOx (14 ng/J or 20 ppm). Ratings: 9.5 GPM at 40° F Rise, 7.5 GPM at 50° F Rise, 6.2 GPM at 60° F Rise, 5.2 GPM at 70° F Rise. 199k Max BTU/h.
1% Buy This
Write A Review
$1,558.00
In-Stock
Freight Icon
Free Shipping
Learn More About Free Freight
Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Learn More About A.O. Smith ATI-540H-P
A.O. Smith
A.O. Smith ATI-540H - 6.3 GPM at 60° F Rise - 0.93 UEF - Propane Tankless Water Heater - Direct Vent
Model: ATI-540H-P
1% Buy This
(11)
$1,269.00
Factory-Direct
Freight Icon
Free Shipping
Learn More About Free Freight
Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
View Details
Tools & Articles
Water Heaters 101
How Hot Water Heaters Work
Tankless Water Heater Buying Guide
How to Pick the Perfect Tankless Water Heater