SANCO2 80-Gallon (GS5-45HPC-D HP + ECO-83SSAQB)
SANCO2 80-Gallon (GS5-45HPC-D HP + ECO-83SSAQB) is a heat pump (hybrid electric) water heater from SANCO2 with a 83 gallon rated tank and a 121 gallon first-hour rating at a 3.8 UEF — 1313 kWh/yr certified use.
Our take
The 83-gallon pairing of SANCO2's split system keeps the headline hardware — an R-744 (CO₂, GWP 1) outdoor compressor rated to −26 °F, the most cold-tolerant in this database, drawing just 7 A at 230 V — while certifying a 121-gallon first-hour rating, second here only to its own 119-gallon sibling, and a 3.80 UEF exactly on the class median at about $223 a year. Tank dimensions are not published in the certification record. Single badge. Where winters are severe and panels are full, this pairing is the balanced choice of the two.
- Best for: Severe-climate households wanting huge delivery without the jumbo tank.
- Trade-off: Two-piece installation, and no certified dimensional data to plan from.
| Uniform Energy Factor (UEF) | 3.8 |
|---|---|
| Annual electricity use | 1313 kWh/yr |
| Fuel | Electric |
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| First-hour rating | 121 gal |
|---|---|
| Rated storage volume | 83 gal |
| Draw pattern | High |
| Heat pump type | Split System HPWH |
|---|---|
| Refrigerant (GWP) | R-744 (CO₂) (GWP:1 | Lower GWP) |
| Compressor low-temp cutoff | -26 °F |
| Input voltage | 230 |
|---|---|
| Max current draw | 7 A |
| Smart / connected capable | No |
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| ENERGY STAR certified | Yes |
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Who is the SANCO2 80-Gallon (GS5-45HPC-D HP + ECO-83SSAQB) for?
- Its 121 gallon first-hour rating suits a household of 5+ people under DOE sizing guidance.
- Estimated running cost: about $223/year at the national average electricity rate (1313 kWh/yr certified use).
- Needs a 240 V circuit; at 7 A max draw plan for a 10 A breaker (NEC 125% continuous-load rule).
- The heat pump compressor operates down to -26 °F ambient — below that, backup elements take over.
Also sold as
The SANCO2 80-Gallon (GS5-45HPC-D HP + ECO-83SSAQB) is certified hardware that SANCO2 and its partner brands publish under 2 names. The same specifications apply to every variant:
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Frequently asked questions
Is the SANCO2 80-Gallon (GS5-45HPC-D HP + ECO-83SSAQB) ENERGY STAR certified?
Yes, the SANCO2 80-Gallon (GS5-45HPC-D HP + ECO-83SSAQB) holds a current ENERGY STAR certification for water heating efficiency (UEF 3.8).
How much does the SANCO2 80-Gallon (GS5-45HPC-D HP + ECO-83SSAQB) cost to run per year?
About $223 per year at national average energy rates, based on its certified annual energy use under the DOE test draw pattern. Your rate and usage change this figure.
What electrical circuit does the SANCO2 80-Gallon (GS5-45HPC-D HP + ECO-83SSAQB) need?
The SANCO2 80-Gallon (GS5-45HPC-D HP + ECO-83SSAQB) runs on a 240 V circuit drawing up to 7 A; per the NEC 125% continuous-load rule plan for at least a 10 A breaker (check the installation manual for the required circuit).
Is the SANCO2 80-Gallon (GS5-45HPC-D HP + ECO-83SSAQB) a smart water heater?
No, the SANCO2 80-Gallon (GS5-45HPC-D HP + ECO-83SSAQB) is not connected-capable — it has no app connectivity or demand-response support.
Sources
- data.energystar.gov (retrieved 2026-08-17)