Water Heaters / Electric Water Heaters / Signature 900 Series Hybrid
A. O. Smith
Signature 900 Series Smart Hybrid Grid-Capable Heat Pump Water Heater
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$699.00 / each · 1 unit
In stock — limited-time offer
Nominal Capacity (Gallons): 50
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Overview
A. O. Smith's Signature 900 Series 66-gallon Smart Hybrid Grid Capable heat pump water heater provides efficient and reliable hot water for 5 to 6 person households, when sized appropriately. A. O. Smith's 900 Series smart heat pumps combines our most efficient technology and added peace of mind with our new Leak Watch and Leak Shield features. This hybrid electric heat pump water heater can save you up to 75% in annual energy costs versus a comparable standard electric water heater — that's $592 per year in potential energy savings! Get up to $2,000 back on your federal tax return when you purchase an energy efficient heat pump water heater this year. Additional rebates may be available in your local area.
How does it work? While in heat pump mode, A. O. Smith's innovative design absorbs heat from the air and transfers it to the tank instead of using the heating elements. During this process it also dehumidifies and cools the ambient air. This model features two backup 4,500-watt copper heating elements for fast recovery during peak demand periods. There's also a user-friendly electric interface, so you can adjust the temperature, select from four operating modes and review service diagnostics for ultimate control of your hot water usage.
Count on the reliable design of this hybrid water heater from A. O. Smith for long-lasting performance. It features durable copper elements, a protective anode rod and a ceramic fused tank shield to reduce corrosion and prevent tank damage. This heat pump comes with a 10-year limited warranty for added peace of mind. Grid Capable design allows smart coordination with utilities to reduce energy use and lower costs.
Product Features
4-5X More Efficient, providing yearly savings of 76% in annual energy costs that's estimated to save up to $600 per year.
Operates at 45 dB which is less than most washing machines, air conditioners, and refrigerators.
Qualify for up to $6,700 in Federal Tax Credits and local utility rebates.
Sends instant leak alerts and shuts off the water supply when a leak is detected with automatic shut-off valve.
General
| Color/Finish Family | Gray |
| Series Name | Signature 900 |
| Type | Tank |
| Power Source | Electric |
| Grade | Residential |
| Use Location | Indoor |
| Display Type | Digital |
Dimensions
| Depth (Inches) | 29.5 |
| Diameter (Inches) | 26.5 |
| Family Size | 6 |
| Height (Inches) | 61.5 |
| Insulation Thickness (Inches) | 2.5 |
| Nominal Capacity (Gallons) | 66 |
| Rated Storage Capacity | 66-Gallon |
| Water Connection Size | 3/4-in |
| Weight (lbs.) | 262 |
Features
| Automatic Shut-Off | Yes |
| Decibel Rating | 45 |
| Foam Insulation | Yes |
| GPH Recovery at 90°F (Gallons) | 20.7 |
| Grid Capable | Yes |
| Hybrid Heat Pump Technology | Yes |
| Leak Detection | Yes |
| Overheat Shut-Off | Yes |
| Super High Efficiency | Yes |
| Uniform Energy Factor | 3.70 |
| Voltage (Volts) | 240 |
| Water Connection Location | Top/Side |
| Water Heater Style | Tall |
| Wattage (Watts) | 4500 |
Compatibility
| App Compatibility | Yes |
| Bluetooth Compatibility | Yes |
| Smart Compatible | Yes |
| Wi-Fi Compatibility | Yes |
| Works with Android | Yes |
| Works with iOS | Yes |
| For Use with Mobile Homes | Yes |
Warranty & Certifications
| Warranty | 10-year limited |
| ENERGY STAR Certified | Yes |
| Safety Listing | UL safety listing |
| AHRI Certified | Yes |
Customer Reviews
| 5 | 196 | |
|---|---|---|
| 4 | 33 | |
| 3 | 4 | |
| 2 | 0 | |
| 1 | 0 |
Customer Photos
+1
Showing 1 - 6 of 233 reviews
- Verified
Very nice unit, with expected A. O. Smith quality
I'm a retired HVAC professional and sold, installed and serviced more A. O. Smith water heaters than I can count. This new model has incorporated several things I always felt were missing on earlier generations. The fan has been greatly improved, connections are in all the right places, and it is noticeably quieter than the unit it replaced.
Closet installation with vent to hall
Boiler Bob · Charlotte, NC · June 12, 2026
- Verified
Pays for itself in five years
Installation took about three hours and went very well. After my utility rebate and the federal tax credit my out-of-pocket cost was comparable to a conventional electric tank, and my monthly electric bill dropped immediately. Easily the best home upgrade I've made.
New water heater on left piped into old water heater
Adam · Columbus, OH · May 29, 2026
- Verified
This water heater is a game changer
I finally decided to go all in on a heat pump water heater. Power consumption has been cut by about 75% — absolutely amazing. Plenty of hot water for the whole family and the app makes it easy to track daily usage and switch modes.
Newly installed A. O. Smith Signature 900 with 10-year warranty
Charles R. · Sarasota, FL · May 8, 2026
- Verified
Awesomely efficient — and a great dehumidifier
My old water heater used 19 kWh per day; this one averages 3.6 kWh per day on an energy monitor. As a bonus it dehumidifies and cools the basement all summer — the floor used to be visibly damp and now it stays dry.
Basement floor that used to be damp from condensation
PeterK · Richmond, VA · April 22, 2026
- Verified
Ease of install and potential to save you money
Very easy to install: two plumbing connections and three wires, plus the condensation tube to a drain. Water in and out are at the top just like a gas heater, which made the swap simple, and it runs at a level you barely notice from the next room.
Plumbing and wiring connections on the new water heater
Gregor · Denver, CO · April 3, 2026
- Verified
Works great and keeps up with my family of 8
This is a great water heater. My electric bill has gone down versus my 20-year-old 50-gallon tank and we still have hot water whenever we need it, even with back-to-back showers.
Installed heat pump water heater in a utility room
James T. · Kankakee, IL · March 18, 2026
