Matching models, side by side
A sample of 8 twin pairs across the size range. Each pair is certified by the same manufacturer with identical cooling and heating capacities, efficiency ratings, compressor type and refrigerant.
| Rheem model | Ruud model | Cooling BTU/h | SEER2 | HSPF2 | Heat at 5°F | Compressor |
|---|---|---|---|---|---|---|
| FPHFR09A3D | FPHFR09A3D | 9,000 | 19.5–21 | 10 | 133% | Variable-speed |
| RP15AY18AJ2N | RP15AY18AJ2N | 17,100 | 15.2–16 | 8.1 | 51% | Two-stage |
| FSHSR18B3D | FSHSR18B3D | 18,000 | 21–21 | 9.8 | 76% | Variable-speed |
| RD16AY24AJVC | RD16AY24AJVC | 22,800 | 16–16 | 8.5 | 60% | Variable-speed |
| FPHFR24A3D | FPHFR24A3D | 24,000 | 19–20 | 10.5 | 100% | Variable-speed |
| RP19AY36AJVC | UP19AY36AJVC | 34,200 | 19–21 | 10 | 87% | Variable-speed |
| RP15AZ36AJ2N | RP15AZ36AJ2N | 34,200 | 15.2–15.2 | 8.1 | 57% | Two-stage |
| RP15AZ42AJ2N | RP15AZ42AJ2N | 40,000 | 15.2–15.2 | 8.1 | 57% | Two-stage |
So what actually differs?
- Price. Twin units are often priced differently because they reach you through different distributors and dealers. Getting quotes for both brands is the easiest way to save on identical equipment.
- Warranty. Parts-warranty length and registration rules can differ by brand. Read the warranty sheet for the exact model you're quoted.
- Installer. The contractor's installation quality affects efficiency and lifespan more than the badge does.
- Cabinet and controls. Some twins differ cosmetically or in the thermostat they pair with best.
Not every model is a twin: Rheem and Ruud each also sell products the other doesn't. Look up your exact model in our directory to check.
Frequently asked questions
Are Rheem and Ruud heat pumps the same?
Yes, for most of the range. In the ENERGY STAR database, 75 distinct Ruud heat pump products have an identical Rheem counterpart — same manufacturer and identical certified capacity and efficiency. That is 96% of Ruud's certified heat pumps and 90% of Rheem's.
Is Rheem better than Ruud?
When the units are twins, the hardware and its certified performance are the same. Differences come from warranty terms, dealer network, installation quality and price — compare written quotes on those points.
How do I check whether my Ruud quote matches a Rheem model?
Ask the contractor for the outdoor model number and the AHRI reference number, then look the model up in our directory. Each model page lists the other brands the same unit is sold under.