At a Glance
A.O. Smith Signature Series 10-GPM 199000-BTU Indoor Liquid Propane Tankless Water Heater
Item #1055579 |
Model #GT15-540-PI
Get It Installed
The product and installation are purchased together after your consultation.
*Consultation is required before installation
Delivers continuous hot water for up to 3 simultaneous showers and 1 sink when sized appropriately (based on a 0.5 GPM faucet and a 2.5 GPM showerhead in the southern zone)
Operates at a 0.93 Uniform Energy Factor (UEF) for maximum energy efficiency and cost savings
Frees up valuable storage space with compact, indoor wall-mounted design
Professional installation required - call 877-GO-LOWES
Uses a 3/4-inch gas line
Features integrated controls for easy temperature control and troubleshooting
Copper primary heat exchanger and stainless steel secondary heat exchanger provide superior heat transfer and protection for an extended life span
Worry-free safety features include freeze, overheat and surge protection as well as troubleshooting diagnostic codes
Provides peace of mind with a 15-year heat exchanger guarantee, 5-year parts guarantee and a 1-year limited labor warranty
General | |||
|---|---|---|---|
Series Name | Signature Series | Fuel Type | Liquid propane |
Type | Tankless | Installation Type | Wall mount |
Power Source | Gas | Ignition Type | Electric |
Grade | Residential | Vent Type | None required |
Use Location | Indoor | ||
Dimensions | |||
|---|---|---|---|
Depth (Inches) | 11.25 | Water Connection Size | 3/4-in |
Family Size | 5 | Weight (lbs.) | 63 |
Height (Inches) | 23.63 | Width (Inches) | 17.75 |
Vent Diameter(s) | 3-in | ||
Features | |||
|---|---|---|---|
Annual Fuel Utilization Efficiency % (Percentage) | 0 | Maximum Gallons per Minute | 10 |
BTU Rating | 199000 | Point of Use | No |
Grid Capable | No | Scale Prevention | No |
High Efficiency | No | Super High Efficiency | Yes |
Installation Location | Wall | Uniform Energy Factor | 0.93 |
Leak Detection | No | Water Heater Style | Tall |
Compatibility | |||
|---|---|---|---|
Bluetooth Compatibility | No | Works with iOS | No |
Smart Compatible | No | Works with SmartThings | No |
Wi-Fi Compatibility | No | Works with the Google Assistant | No |
Works with Amazon Alexa | No | For Use with Mobile Homes | No |
Works with Android | No | For Use with RVs | No |
Works with Apple HomeKit | No | ||
Warranty | |||
|---|---|---|---|
Warranty | 15-year limited | ||
Certifications | |||
|---|---|---|---|
CA Residents: Prop 65 Warning(s) | Safety Listing | CSA safety listing | |
ENERGY STAR Certified | No | AHRI Certified | Yes |
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 40101800 | ||
Check out the Best Selling Water Heaters on Lowes.com
Ratings may include incentivized customer reviews.
Returned Product Sold as NEW!
Have to return this the box looked new, I got home and it has been installed prior. I had to return it and buy something else.
From Signature Series 6.6-GPM 160000-BTU Indoor Liquid Propane Ultra-Low NOx Tankless Water Heater Verified Purchaser
Choose Another Brand
Code 111 third month of new home build. You have to line up your own plumber and even though I purchased the extended warranty, I was only reimbursed a partial amount. They sent the part no charge. It worked fine for 2 more months and now code 121. Called support agin and explained problem and at this point what were they going to do to take care of this issue. (Rep) Kacey put it back on me and told me I was going to have to get a plumber to come out and test gas pressure, which I have to pay fo...
We are sorry to hear of your experience. We want to ensure the issue is resolved.
Please send your phone number to talktous@aosmith.c...
Lowes sold me a used water heater as new!
Picked it up curbside, my first mistake - Got it home the box was wet, water came out of the unit when I was installing it and the dip switches were marked and set in positions not in the booklet. Went to code 101 in 2 minutes and 991 in less than 5. Reset the unit and the fan is still all over the place. Seems like a pretty expensive item to send out the door after it was obviously returned. It will be returned too!
From Signature Series 6.6-GPM 160000-BTU Indoor Liquid Propane Ultra-Low NOx Tankless Water Heater Verified Purchaser
We are very sorry to hear of your experience.
We recommend reaching out to Lowe's Customer Care at 1-800-445-6937 or Text 84109.
Easy to install
Very easy to install. We replaced a 40-gallon propane water heater with this one and are happy with the performance.
From Signature Series 6.6-GPM 160000-BTU Indoor Liquid Propane Ultra-Low NOx Tankless Water Heater Verified Purchaser
I have no idea. It’s not hooked up yet
A.O.Smith name recognition. Not completely finished so I’m not sure how it’s going to work
From Signature Series 6.6-GPM 160000-BTU Indoor Liquid Propane Ultra-Low NOx Tankless Water Heater Verified PurchaserIncentivized
Would buy again
This is my 2nd AO Smith tankless water heater. Bought this one for a 580 sqft cabin.
From Signature Series 6.6-GPM 160000-BTU Indoor Liquid Propane Ultra-Low NOx Tankless Water Heater Verified Purchaser
Better than I expected
This water heater was easy to install (less than 4 hours.). I did it myself - but full disclosure I like doing home projects like this. We have had it installed for a year now with no failures and it works flawlessly. 2 bathrooms and plenty of hot water. One thing different than the old regular water heater is it takes a few extra seconds to get the hot water to the faucets than it used to do.
From Signature Series 6.6-GPM 160000-BTU Indoor Liquid Propane Ultra-Low NOx Tankless Water Heater
Make sure a tankless is proper for you.
Does it work? Yes, gets water hot right away...under the right conditions. Prior to purchase I contacted AO Smith's technical support to determine the suitability for using with a circulation pump. They advised the water heater would activate at .4 to .5 gpm, which would be perfect as I have a 1 gpm circulation system. The only problem is once the water temp gets up to 90-100 degrees, then this water heater does not activate until gpm flow through the water heater is above 1 gpm. Whe...
From Signature Series 6.6-GPM 160000-BTU Indoor Liquid Propane Ultra-Low NOx Tankless Water Heater Verified Purchaser
The water heater requires a higher level of flow when the water heater isn't heated as much, such as the example of the water being 90 degrees yo...
28 Questions
2
Answers
2
Answers
2
Answers
1
Answer
1
Answer
1
Answer
1
Answer
1
Answer
1
Answer
1
Answer
We are sorry to hear of your experience.
We recommend reaching out to Lowe's Customer Care at 1-800-445-6937 or Text 84109.