Think Green, Save Green

If you’re like most homeowners, saving money on utility bills is a top priority for you. Bringing an environmentally friendly, high efficiency water heater into your home can be a great start. Recently, Congress increased residential tax credits for energy efficient improvements. A number of A. O. Smith high efficiency water heater models are eligible for a tax credit of up to 10% (with a cap of $300) of the purchase and install price.
To search for rebates in your area, enter your zip code in the Rebate Finder to the left.
How is the credit calculated?

There are important limitations on this tax credit. First, this is a single tax credit that can be used on a variety of “qualifying energy efficiency improvements” placed into service in 2011. You may claim a maximum of 10% (with a cap of $500*) on all of your “qualifying energy efficiency improvements.” That means, for example, if you purchase and install a qualifying unit and claim $100 of the tax credit for the unit, you have only $400 of the credit left to claim on your other qualifying expenditures. Second, you can claim a maximum of $300 on any one qualifying item of energy-efficiency building property - such as a water heater ($150 for qualifying furnaces and boilers). Third, if you claimed previous tax credits on energy efficiency improvements in any tax year from 2006 to 2010, you have to deduct the amount of those credits from the $500 cap. If the total amount of your previous claims is more than $500, you cannot claim any credit for improvements installed in 2011.
* There are special rules for qualifying units, which are subject to a $200 cap. If your planned improvements include these units, consult your A. O. Smith supplier for additional information.
How do I get my tax credit?
To get your tax credit, you must purchase and put an eligible A. O. Smith water heater into service in your primary residence between January 1, 2011 and December 31, 2011. Save your receipt and use IRS Tax Form 5695 to claim your credit on your tax return. Click here for more details.
2011 Eligible models listing
All models listed on this page qualify for the tax credit when installed in a residential application by December 31, 2011.
| Model Number |
Gallon Capacity |
Energy Factor by Mode |
1st Hour Rating/Gallon by Mode |
Height |
Diameter |
Shipping Weight (LBS) |
| Eff |
Hybrid |
Elec |
Eff |
Hybrid |
Elec |
| PHPT-60 |
60 |
2.40 |
2.33 |
.88 |
51 |
68 |
66 |
67.33 |
24.5 |
365 |
| PHPT-80 |
80 |
2.30 |
2.33 |
.85 |
70 |
84 |
76 |
81.5 |
24.5 |
410 |
| Model Number |
First Hour Gallon Capacity |
Recovery 90ºF Rise Gallons |
Input |
Manifold Pressure |
Electrical Characteristics |
Shipping Weight (LBS) |
| BTU/HR |
Gas Type |
IN. WC |
kPA |
Volts/Hz |
Amperes |
| HYB-90N |
189 |
121 |
100,000 |
NAT |
4.2 |
1.05 |
120/60 |
2.5 |
198/90 |
*Cirrex® solar models are eligible for 30% of total installed cost in tax credit, with no maximum limit.
| Model Number |
First Hour Rating Gallons |
Gallon Capacity |
BTU Input Per Hour Natural |
Recovery 90°F Rise Gallons |
Dimensions in Inches |
| Height |
Diameter |
| GPHE-50* |
127 |
50 |
76,000 |
92 |
70-5/8 |
22 |
| GDHE-50 |
164 |
50 |
100,000 |
129 |
66-3/4 |
22 |
*Available in natural gas only. Inlet and outlet connections: 3/4" male. Circulation loop connections: 3/4" female.
| Model Number |
BTU Input Natural/Propane |
Hot Water Output (GPM) |
Shipping Weight (LBS) |
| Minimum |
Maximum |
Maximum |
45°F Rise |
70°F Rise |
INDOOR MODELS
|
ATI-305N
(200/201 Series) |
15,000 |
180,000 |
7.5 |
6.6 |
4.3 |
50 |
| ATI-505N |
15,000 |
199,000/190,000 |
9.4 |
7.4/7.1 |
4.7 |
50 |
OUTDOOR MODELS
|
ATO-305N
(200/201 Series) |
15,000 |
180,000 |
7.5 |
6.6 |
4.3 |
46 |
| ATO-505N |
15,000 |
199,000 |
9.4 |
7.4 |
4.7 |
46 |
**Models can be installed in light duty commercial applications. **Models include remot control and connect up to 4 units.
Non-Condensing Models
| Model Number* |
Type |
BTU Input Natural/Propane |
Energy Factor (EF) |
Hot Water Output (GPM) |
Approximate Shipping Weight (LBS) |
| Minimum |
Maximum |
|
Maximum |
45°F Rise |
70°F Rise |
| ATI-110-N |
Indoor |
19,500 |
140,000 |
0.82 |
6.6 |
5.1 |
3.3 |
38 |
| ATI-310-N |
Indoor |
11,000 |
190,000 |
0.82 |
8.0 |
6.9 |
4.4 |
43 |
| ATI-510-N** |
Indoor |
11,000 |
199,000 |
0.82 |
10.0 |
7.2 |
4.7 |
45 |
| AT0-110-N |
Outdoor |
19,500 |
140,000 |
0.82 |
6.6 |
5.1 |
3.3 |
38 |
| AT0-310-N |
Outdoor |
11,000 |
190,000 |
0.82 |
8.0 |
6.9 |
4.4 |
43 |
| AT0-510-N** |
Outdoor |
11,000 |
199,000 |
0.82 |
10.0 |
7.2 |
4.7 |
45 |
Condensing Models
| Model Number* |
Type |
BTU Input Natural/Propane |
Energy Factor (EF) |
Hot Water Output (GPM) |
Approximate Shipping Weight (LBS) |
| Minimum |
Maximum |
|
Maximum |
45°F Rise |
70°F Rise |
| ATI-320H-N |
Indoor |
13,000 |
180,000 |
0.91 |
8.0 |
|
|
73 |
| AT0-320H-N |
Outdoor |
13,000 |
180,000 |
0.91 |
8.0 |
|
|
73 |
| ATI-320H-P |
Indoor |
13,000 |
180,000 |
0.91 |
8.0 |
|
|
73 |
| AT0-320H-P |
Outdoor |
13,000 |
180,000 |
0.91 |
8.0 |
|
|
73 |
| ATI-520H-N |
Indoor |
13,000 |
199,000 |
0.91 |
9.0 |
8.1 |
5.2 |
85 |
| AT0-520H-N |
Outdoor |
13,000 |
199,000 |
0.91 |
9.0 |
8.1 |
5.2 |
83 |
| ATI-520H-P |
Indoor |
13,000 |
199,000 |
0.91 |
9.0 |
8.1 |
5.2 |
85 |
| AT0-520H-P |
Outdoor |
13,000 |
199,000 |
0.91 |
9.0 |
8.1 |
5.2 |
83 |
*For propane, change “N” to “P” in model number when ordering: Example: (AT0-710-P).
***ASME Models
2010 Tax Credit Information Archive.