A.O. Smith Voltex AL 80 Gal
#3 in 80 GallonFull review
A solid 240 V heater with leak protection included, sold at Lowe’s as the Signature 900 line.
Lowe's $2,798$2,798
The A.O. Smith Voltex AL 80 Gal is the better heat pump water heater overall, rated 3.8 to 3.2. The A.O. Smith Voltex AL 80 Gal leads on warranty, hot water and noise. The Bradford White AeroTherm 80 Gal (6-Year) wins on efficiency. The A.O. Smith Voltex AL 80 Gal costs $181 less ($2,798 vs $2,979).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Bradford White AeroTherm 80 Gal (6-Year)
#14 in 80 GallonFull review
The 6-year-warranty version of Bradford White’s 80-gallon hybrid, same unit as the discontinued 10-year model, sold and installed through plumbers.
Total Home Supply $2,979$2,979
Which should you buy?
- Choose the A.O. Smith Voltex AL 80 Gal for warranty (10-year tank, 10-year parts, 1-year labor vs 6-year tank, 6-year parts), hot water (95 gallons in the first hour vs 88 gallons in the first hour) and noise (45 dB(A) vs 50 dB(A)).
- Choose the Bradford White AeroTherm 80 Gal (6-Year) for efficiency (4.00 UEF vs 3.88 UEF).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 80 gallon heat pump water heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | A.O. Smith Voltex AL 80 Gal | Bradford White AeroTherm 80 Gal (6-Year) |
|---|---|---|
| Overall rating | 3.8/5 | 3.2/5 |
| Efficiency 35% | 63 3.88 UEF | 71 4.00 UEF |
| Hot water 20% | 80 95 gallons in the first hour | 52 88 gallons in the first hour |
| Warranty 20% | 75 10-year tank, 10-year parts, 1-year labor | 17 6-year tank, 6-year parts |
| Cold rooms 15% | 32 heat pump runs down to 37 °F room air | 32 heat pump runs down to 37 °F room air |
| Noise 10% | 69 45 dB(A) | 38 50 dB(A) |
Specifications
| A.O. Smith Voltex AL 80 Gal | Bradford White AeroTherm 80 Gal (6-Year) | |
|---|---|---|
| Ratings (ENERGY STAR) | ||
| Size (nominal) | 80 gal | 80 gal |
| Tank volume (measured) | 82 gal | 75 gal |
| Uniform Energy Factor | 3.88 | 4.00 |
| First-hour rating | 95 gal | 88 gal |
| Draw pattern | High | High |
| Yearly energy use | 1,279 kWh | 1,240 kWh |
| Heat pump cut-off (low) | 37 °F | 37 °F |
| Sound level | 45 dB(A) | 50 dB(A) |
| ENERGY STAR ID | 2408847 | 4439729 |
| Installation | ||
| Power | 240 V | 240 V |
| Circuit | 30 A, 208/240 V | 25 A, 208/240 V |
| Backup element | 4,500 W | 4,000 W |
| Operating air range | 37 to 120 °F | 37 to 120 °F |
| Minimum room size | 450 cu ft | 700 cu ft |
| Size | 69 in tall, 27 in across | 51.1 in tall, 22 in across |
| Weight | 302 lb | - |
| Refrigerant | R-134a | R-134a |
| Features | ||
| Wi-Fi | Built in | Built in |
| App | A. O. Smith (iCOMM) | Bradford White Wave |
| Demand response port (CTA-2045) | Yes | - |
| Leak detection | Yes | - |
| Modes | Hybrid, Heat Pump, Electric, Vacation | Heat Pump, Hybrid Standard, Hybrid Plus, Electric, Vacation |
| Warranty and models | ||
| Warranty | 10 yr tank, 10 yr parts, 1 yr labor | 6 yr tank, 6 yr parts |
| Also sold as | American HPS10280H045DV, Lochinvar HPSA080KD, Reliance 10-80-DHPTS, State HPSX-80-DHPT | - |
| Released | 2022-06 | 2025-07 |