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Are Ruud and WeatherKing heat pumps the same?

20 model numbers are listed under both Ruud and WeatherKing. For 10 of them the certified record is the same record under each brand.

  • 20 shared model numbers
  • 10 identical records
  • 10 records that differ
  • Updated Oct 26, 2026

How much of each range overlaps

Each brand's range, and how much of it is shared with the other
Brand Units in the certified data Certified combinations Share of its range that is shared
Ruud 89 1,610 22.5%
WeatherKing 20 419 100%

“Share of its range” is shared model numbers divided by that brand's own units. The two shares differ because the two ranges are different sizes. One row per unit (a certified model number), not per brand entry.

The model numbers they share

20 of 20 shown

Model numbers listed under both brands. The 5°F figure is the median across that unit's own certified pairings.

Model numbers listed under both Ruud and WeatherKing
Model number Size class TypeHeat at 5°FBtu/hkW COP at 5°F Pairings Ruud WeatherKing Same record Cold climate
WP15AZ60AJ2N 54,000 Btu (4.5-ton) central 30,600 2.30 8 3 1 Differs Yes
WP14AY60AJ2N 54,000 Btu (4.5-ton) central 25,800 2.05 43 10 16 Differs NC
WP15AZ48AJ2N 48,000 Btu (4-ton) central 24,200 2.20 10 3 2 Identical Yes
WP15AY48AJ2N 48,000 Btu (4-ton) central 23,000 2.20 8 3 1 Differs Yes
WP15AZ42AJ2N 42,000 Btu (3.5-ton) central 20,400 2.10 10 3 2 Identical Yes
WP14AY42AJ2N 42,000 Btu (3.5-ton) central 19,900 2.10 28 6 12 Identical NC
WP15AY42AJ2N 42,000 Btu (3.5-ton) central 18,900 2.00 328 72 127 Differs Yes
WP15AY36AJ2N 36,000 Btu (3-ton) central 18,600 2.00 311 82 146 Differs NC
WP15AZ36AJ2N 36,000 Btu (3-ton) central 17,800 2.10 14 5 3 Differs NC
WP15AZ30AJ2N 30,000 Btu (2.5-ton) central 16,000 2.10 82 22 32 Differs Yes
WP15AY30AJ2N 30,000 Btu (2.5-ton) central 13,900 1.90 8 3 1 Differs NC
WP15AZ24AJ2N 24,000 Btu (2-ton) central 12,500 2.20 78 21 30 Identical Yes
WP15AY24AJ2N 24,000 Btu (2-ton) central 11,100 2.00 11 4 2 Differs NC
WP15AZ18AJ2N 18,000 Btu (1.5-ton) central 9,300 2.10 55 14 22 Identical Yes
WP15AY18AJ2N 18,000 Btu (1.5-ton) central 8,600 2.00 12 4 2 Differs Yes
RHPXZS024AJT 24,000 Btu (2-ton) central — — 6 1 1 Identical NC
RHPXZS036AJT 36,000 Btu (3-ton) central — — 6 1 1 Identical NC
RHPXZS048AJT 48,000 Btu (4-ton) central — — 6 1 1 Identical NC
RHPXZS060AJT 60,000 Btu (5-ton) central — — 6 1 1 Identical NC
WP15AY60AJ2N 54,000 Btu (4.5-ton) central — — 35 9 16 Identical NC

NC not cold-climate certified — not in the certified data

20 of 20 shared model numbers All brand pairs

Updated Oct 26, 2026 · Methodology