New 17 SEER pulling more energy than my old 10 SEER

I just replaced a 5-ton Trane XB10 that was installed in 2004 with a Carrier 24ACB7 (2-stage). The old unit was rated at 10 SEER and the new unit was rated at 17 SEER.

I have an energy monitoring system that is connected to each circuit on the breaker panel. This was installed prior to the system replacement and remained untouched after the new install.

Here is the energy use for the compressor and fan (measured separately due to being on different circuits). I took the readings after the units had been running for about 5 minutes to eliminate any startup fluctuations.

Trane: compressor: 3.005 kW, blower: 1.026 kW
Carrier: compressor: 3.297 kW, blower: .941 kW (stage 1/2)
Carrier: compressor: 2.337 kW, blower: .502 kW (stage 1 only)

I was really expecting the new unit to be more efficient running at full power than my old unit. I know the 2-stage operation will factor into the SEER rating pushing it to 17.

According to the online calculators, going from, 10 SEER to 17 SEER should be 41% more efficient. Even if my new Carrier runs ONLY in single stage (2.337 kW) it would only be about 22% more efficient (3.005-2.337)/3.005) = 22%. Of course it would not be able to keep up with demand at that level.

Does it surprise any of you professionals that this new unit consumes 10% more energy than my 17-year old Trane when running both stages? This wasn't what I was expecting. Did I misunderstand how SEER and efficiency work?

source https://hvac-talk.com/vbb/threads/2228664-New-17-SEER-pulling-more-energy-than-my-old-10-SEER?goto=newpost