A.O. Smith Signature 900 66-Gallon Tall 10-year Warranty 240-volt Smart Hybrid Grid Capable Heat Pump Water Heater with Leak Detection and Automatic Shut-off
Item #4842214 |
Model #HPS10-66H45DV
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ENERGY STAR® certified 66-gallon hybrid electric water heater offers up to $592 per year in energy savings.*
Eligible for $2,000 Federal Tax Credit, additional rebates may apply (see Lowe's rebate center for details)
Ideal hot water delivery for 5 to 6 person households, when sized appropriately
iCOMM™ smart connectivity allows you to get notifications and manage your hybrid electric heat pump water heater from your smartphone
Leak Watch® smart technology provides instant leak alerts for added peace of mind
Leak Shield® shut-off valve automatically shuts off the water supply when a leak is detected (accessory included)
Tank Guard Plus™ smart tank system adapts to local water quality for added tank protection
Grid-Capable design reduces energy costs and operates quietly at 45 dB
Delivers 82 gallons in the first hour via two back-up 4,500-watt copper heating elements
General | |||
|---|---|---|---|
Color/Finish Family | Gray | Grade | Residential |
Series Name | Signature 900 | Use Location | Indoor |
Type | Tank | Display Type | Digital |
Power Source | Electric | ||
Dimensions | |||
|---|---|---|---|
Depth (Inches) | 29.5 | Nominal Capacity (Gallons) | 66 |
Diameter (Inches) | 26.5 | Rated Storage Capacity | 66-Gallon |
Family Size | 6 | Water Connection Size | 3/4-in |
Height (Inches) | 61.5 | Weight (lbs.) | 262 |
Insulation Thickness (Inches) | 2.5 | Width (Centimeters) | 26.5 |
Features | |||
|---|---|---|---|
Annual Fuel Utilization Efficiency % (Percentage) | 0 | Point of Use | No |
Automatic Shut-Off | Yes | Scale Prevention | No |
Decibel Rating | 45 | Super High Efficiency | Yes |
Foam Insulation | Yes | Temperature and Pressure Relief Valve | Yes |
GPH Recovery at 90 Degrees F (Gallons) | 20.7 | Uniform Energy Factor | 3.70 |
Grid Capable | Yes | Voice Controlled | No |
High Efficiency | Yes | Voltage (Volts) | 240 |
Hybrid Heat Pump Technology | Yes | Water Connection Location | Top/Side |
Leak Detection | Yes | Water Heater Style | Tall |
Overheat Shut-Off | Yes | Wattage (Watts) | 4500 |
Compatibility | |||
|---|---|---|---|
App Compatibility | Yes | Works with Apple HomeKit | No |
Bluetooth Compatibility | Yes | Works with iOS | Yes |
Smart Compatible | Yes | Works with SmartThings | No |
Wi-Fi Compatibility | Yes | Works with the Google Assistant | No |
Works with Amazon Alexa | No | For Use with Mobile Homes | Yes |
Works with Android | Yes | For Use with RVs | No |
Warranty | |||
|---|---|---|---|
Warranty | 10-year limited | ||
Certifications | |||
|---|---|---|---|
CA Residents: Prop 65 Warning(s) | Safety Listing | UL safety listing | |
ENERGY STAR Certified | Yes | AHRI Certified | Yes |
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 40101800 | ||
Check out the Best Selling Water Heaters on Lowes.com
Ratings may include incentivized customer reviews.
What Customers Are Saying
The hybrid water heater has mixed reviews, with both positive and negative experiences reported. Customers appreciate the energy efficiency and quiet operation, but many experienced significant reliability issues, such as premature compressor failures that negated the energy savings. Connectivity and customer service problems were also common complaints. Customers should carefully consider the potential downsides before purchasing this product.
Customer review summary generated by AI, including incentivized reviews.Easy setup and great product. Love the wifi.
Great price after rebate through Oncor!
From Signature 900 50-Gallon Tall 10-Year Warranty 240-Volt Smart Hybrid Grid Capable Heat Pump Water Heater with Leak Detection & Automatic Shut-Off Verified Purchaser
Compressor and LOWE's Protection Plan Failed
Hey! Purchased the unit and the Lowe's Protection Plan / Service Agreement less than 2 years ago. The compressor failed and so I filed a claim with the Lowe's Protection Plan website. They just let me know that they won't cover any service. I paid for a "Service Contract". Not a refund contract. The unit is still covered by A.O. Smith's warranty. I don't need a "buyout" from Assurant. I purchased a "Service Contract". Hey Lowe's, Is this what you deem acceptable? Here's of the email. ...
Loud Banging Noise
Buyer Beware! This unit makes a loud bang and causes sudden water pressure drop during times of high water usage and/or recovery. Very unsettling noise that will make you jump from multiple rooms away in the house or awaken you from sleeping. This noise has been present since the installation. After contacting A.O.Smith tech support and providing them video of the noise with significant gauged pressure drop, they claim that this is completely normal noise and operation and therefore refuse t...
From Signature 900 50-Gallon Tall 10-Year Warranty 240-Volt Smart Hybrid Grid Capable Heat Pump Water Heater with Leak Detection & Automatic Shut-Off Verified Purchaser
Not reliable - Do not buy
So, I bought a new AO Smith Heat pump water heater back in 2023. In 9-month it broke. The Heat Pump stopped working. After jumping through all the hoops sending pictures etc. I got a brand-new AO Smith heat pump water heater. 18 months later the new water heater broke. AO Smith is willing to replace it but now I am out the install and disposal fee. It was only 27 months and now I will have replaced the unit twice and I am out a second install! AO Smith needs to make products that work and stand...
We're sorry to hear of your experience.
We want to ensure you receive the warranty coverage included with your purchase.
Pl...
Do Not Purchase
We have purchased two of these water heaters from Lowes and AO Smith, and the heat pump has died again! Same failure both times. AO Smith may replace the unit, but no one covers the cost of install and haul away. It costs us hundreds of dollars each time this water heater dies. Our previous heat pump water heater, a GE Geospring, latest 10 years with no issues. Lowes, AO Smith...do better by your customers. This unit is a lemon.
From Signature 900 50-Gallon Tall 10-Year Warranty 240-Volt Smart Hybrid Grid Capable Heat Pump Water Heater with Leak Detection & Automatic Shut-Off Verified Purchaser
We're sorry to hear of your experience.
We want to ensure you receive the warranty coverage included with your purchase.
Pl...
So Much for Saving
While advertising great savings, it will be lost on the 1st service call. Do yourself a favor before you purchase call their support line early in the morning. Chances are you will have 50 to 60 callers in line before you. They force u to have a tech look at it, before they honor warranty.
We're sorry to hear of your experience.
We want to ensure you receive the warranty coverage included with your purchase.
Pl...
Reliability issue
I would give it 0 stars if I could. We got this in October 2022 and it failed in April 2024 for compressor issues. The unit was covered under warranty, but labor wasn't, costing additional $2500. We got another one installed in October 2024 and guess what, it failed again in February 2026. Avoid this company at all costs.
We're sorry to hear of your experience.
We want to ensure you receive the warranty coverage included with your purchase.
Pl...
Died after 2 1/2 years
This was installed in August 2023. Cost a pretty penny- both to purchase and to install, and it died in February. 2026. It needs a new compressor. Yes, it is being replaced under warranty- but the evaluation by the technician and the installation together will be about $1,900....So, don't buy this. We are sorry that we did.
We are sorry to hear of your experience. We want to ensure the issue is resolved.
Please send your phone number to [email protected]...
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We're sorry to hear of your experience.
We want to ensure you receive the warranty coverage included with your purchase.
Pl...