Best Ao Smith Gas Water Heaters in 2026
Daisy
Last Updated: Jul 19, 2026
Daisy
Last Updated: Jul 19, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| THMOS | 6.01 | ✅ | ✅ | ✅ |
No More Wait for Hot Water - Point of use 4 gallons mini tank water heater provides instant hot water where you need it with fast recovery, reducing standby loss. Thermal efficiency up to 99%
Easy Installations - Dimensions 14.5"W x 14.5"H x 12.9"D compact design, can be wall or floor mounted under sink / counter, plug into a standard 120V outlet, no special wiring required. Nominal current 12amps
Adjustable Temperature - Thermostat with 3 temperature level settings, range from 50°F to 149°F with high temperature limit protection, also a freeze mode to prevent tank from freezing
UL Certified & Durable - Enamel Coating Glass-lined tank for great insulation and preventing leaking, CASH USA made Temperature & Pressure Relief valve included, UL certified ensuring a safe long service life
Specifications and Warranty - Dimensions: 14.5"H x 14.5"W x 12.9"D; Weight:19.8lbs; Water connections: 1/2" NPT, Electrical requirements: 1.44 kW at 120 volts, plug-in connection with 2 feet power cord; Max water pressure:150PSI; Nominal current: 12A. 3-year Limited Warranty for the tank, 1-year warranty for parts and 24hours customer service
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| THMOS | 6.01 | ✅ | ✅ | ✅ |
【No More Wait for Hot Water】- Point of use 2.5 gallons mini tank water heater provides instant hot water where you need it with fast recovery, reducing standby loss. Adjustable temperature range from 50°F to 149°F
【Easy Installations】- Dimensions 12.95"W x 12.95"H(16.49" with valve) x 11.5"D compact design, can be wall or floor mounted under sink / counter, plug into a standard 120V outlet.
【Incoloy 800 Stainless Steel Heating Element 】- Excellent at resisting corrosion, as well as handling and transferring heat at high temperatures, no scaling, heating efficiency up to 99%. Enhancing the water heater’s lifespan and durability
【Enamel Coating Glass-lined】- Gold porcelain linning for better insulation and preventing leaking, CSA T&P Relief valve CASH USA made, UL certified ensuring a safe long service life
【Specifications and Warranty】- Dimensions: 12.95"H x 12.95"W x 11.5"D; Weight: 15.4 lbs; Water connections: 1/2" NPT, Electrical requirements: 1.44 kW at 120 volts, plug-in connection with 2 feet power cord; Max water pressure: 150PSI; Nominal current: 12A. 3-year Limited Warranty for the tank, 1-year warranty for parts and 24hours customer service
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| THMOS | 6.21 | ✅ | ✅ | ✅ |
[No Wait for Hot Water] - Point of use 1.3 gallons mini tank water heater provides instant hot water where you need it with fast recovery, reducing standby loss. Thermal efficiency up to 99%
[Small Compact for Sink] - The hot water heater is compact designed for your sink with dimensions 11.42" x 11.42" x 9.65", can be wall or floor mounted under sink / counter, plug into a standard 120V outlet. Nominal current 12amps
[Adjustable Temperature] - Thermostat with 3 temperature level settings, range from 77°F to 140°F with high temperature limit protection, also a freeze mode to prevent tank from freezing
[Premium Quality & Durable] - Glass-lined tank for great insulation, Incoloy 800 stainless steel heating element, T&P relief valve made in USA, UL listed, ensuring a long service life
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| A. O. Smith Water Treatment | 9.85 | ✅ | ✅ | ✅ |
Instantly Experience Hot Water - Enjoy the comfort and convenience of hot water in your home without the wait.
Energy & Cost Efficient - The most energy efficient circulator on the market that reduces waste and costs associated with the consumption of water.
Fully Automatic Operation - This under sink recirculation system is controlled with a built-in thermostat and timer to conserve water. The pump typically runs three to four times per hour for one to two minutes.
For technical support or installation questions, contact (401) 785-3000. One Wrench Installation - Kit includes stainless steel pump, 2 braided hoses, 2 tees and all necessary fittings. Installs under sink in less than 10 minutes. Pump is designed for indoor installation. No plumber required.
Without Dedicated Return Line - Designed for single pipe system homes without an existing hot water return line and up to 250 ft of household piping. Works with standard hot water tank or indirect water heater. Electrical outlet required under sink.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| SURPLUS SUPPLY | 4.46 | ❌ | ❌ | ❌ |
Meets or exceeds the thermal efficiency and/or standby loss requirements
Electronic Ignition
CSA Certified and ASME Rated TandP Relief Valve
Handhole Cleanout
Vent Size: 6
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Buildcom | 9.74 | ❌ | ❌ | ❌ |
Air-Fuel ratio (AFR) sensor
Exhaust and water temperature safety control
Overheat cutoff fuse
4" pipe vents up to 50 equivalent feet or 3" pipe vents up to 25 equivalent feet
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Plumbing Planet | 9.67 | ❌ | ❌ | ❌ |
Compact design
Side-Mounted Plumbing and Electrical Connections
Designed for Installation UnderSide-Mounted Plumbing and Electrical Connectionsa Counter
Durable Tamper-Resistant Brass Drain Valve
No. of Elements: 1
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Complies with SCAQMD Rule 1146.2, Southern California and texas Approved
Rated Category 1 Appliance
Included Draft Built-In Blower
Uses Standard Metal Single Wall or Double Wall Type B Vent
Vent Size: 6
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Dynaclean diffuser dip tube-helps reduce lime and sediment buildup, maximizes hot water output
Green Choice gas burner-patented design reduces NOx emissions
Coregard magnesium anode
Push-button Piezo ignitor
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ResearchWaterFilters | 5.20 | ❌ | ❌ | ❌ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Heat and Air Wholesale | 1.05 | ❌ | ❌ | ❌ |
40 gallon tank
36,000 BTU gas burner
GCR-40 standard vent
6 year limited tank warranty
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Meets or exceeds the thermal efficiency and/or standby loss requirements
Electronic Ignition
CSA Certified and ASME Rated TandP Relief Valve
Handhole Cleanout
Vent Size: 6
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Complies with SCAQMD Rule 1146.2, Southern California and texas Approved
Rated Category 1 Appliance
Included Draft Built-In Blower
Uses Standard Metal Single Wall or Double Wall Type B Vent
Vent Size: 6
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Dynaclean diffuser dip tube-helps reduce lime and sediment buildup, maximizes hot water output
Green Choice gas burner-patented design reduces NOx emissions
Coregard aluminum anode
Push-button Piezo ignitor
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Dynaclean diffuser dip tube-helps reduce lime and sediment buildup, maximizes hot water output
Green Choice gas burner-patented design reduces NOx emissions
Coregard aluminum anode
Push-button Piezo ignitor
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Ao Smith | 12 |
| Thermomate | 3 |
We've carried out a comprehensive analysis of 1,832 reviews on gas water heaters ao smith, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select gas water heaters ao smith priced around $2,941.71, with top brands including and
Our team of expert editors reviewed these high-quality items and handpicked the top 15 gas water heaters ao smith for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include and .
We are dedicated to assisting our users in finding the right heaters Products based on their needs, saving them considerable time when choosing which gas water heaters ao smith to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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