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Are ACiQ and Maratherm heat pumps the same?

24 model numbers are listed under both ACiQ and Maratherm. For 14 of them the certified record is the same record under each brand.

  • 24 shared model numbers
  • 14 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
ACiQ 133 7,847 18%
Maratherm 30 1,265 80%

“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

24 of 24 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 ACiQ and Maratherm
Model number Size class TypeHeat at 5°FBtu/hkW COP at 5°F Pairings ACiQ Maratherm Same record Cold climate
N5H8T60*K*AAA* 54,000 Btu (4.5-ton) central 30,200 2.25 1,164 118 71 Differs NC
N5H5S60*K*AAA* 54,000 Btu (4.5-ton) central 28,600 2.18 11 1 1 Identical NC
R5H5S60*K*AAA* 54,000 Btu (4.5-ton) central 28,600 2.18 11 1 1 Identical NC
N5H8T48*K*AAA* 48,000 Btu (4-ton) central 25,000 2.15 3,888 391 243 Identical NC
N5H5S48*K*AAA* 48,000 Btu (4-ton) central 24,400 2.28 53 3 5 Differs NC
R5H5S48*K*AAA* 48,000 Btu (4-ton) central 24,400 2.28 53 3 5 Differs NC
PHR560000K***K1 54,000 Btu (4.5-ton) central 22,200 2.00 11 1 1 Identical NC
N5H5S42*K*AAA* 42,000 Btu (3.5-ton) central 19,900 2.26 43 3 4 Identical NC
R5H5S42*K*AAA* 42,000 Btu (3.5-ton) central 19,900 2.26 43 3 4 Identical NC
N5H8T36*K*AAA* 36,000 Btu (3-ton) central 19,000 2.24 2,442 251 145 Identical NC
PHR548000K***K1 48,000 Btu (4-ton) central 18,200 1.95 11 1 1 Identical NC
N5H5S36*K*AAA* 36,000 Btu (3-ton) central 17,500 2.18 312 26 26 Differs NC
R5H5S36*K*AAA* 36,000 Btu (3-ton) central 17,500 2.18 312 26 26 Differs NC
R5H5S31*K*AAA* 30,000 Btu (2.5-ton) central 14,000 2.06 382 4 33 Differs NC
N5H5S30*K*AAA* 30,000 Btu (2.5-ton) central 13,500 2.10 64 5 6 Differs NC
R5H5S30*K*AAA* 30,000 Btu (2.5-ton) central 13,500 2.10 64 5 6 Differs NC
PHR536000K***K1 36,000 Btu (3-ton) central 12,700 1.77 11 1 1 Identical NC
N5H5S24*K*AAA* 24,000 Btu (2-ton) central 11,400 2.10 1,985 182 137 Identical NC
R5H5S24*K*AAA* 24,000 Btu (2-ton) central 11,400 2.10 1,988 182 137 Identical NC
N5H8T24*K*AAA* 24,000 Btu (2-ton) central 11,100 2.06 4,839 463 266 Differs NC
PHR524000K***K1 24,000 Btu (2-ton) central 8,600 1.90 11 1 1 Identical NC
N5H5S18*K*AAA* 18,000 Btu (1.5-ton) central 8,400 2.04 505 45 40 Identical NC
R5H5S18*K*AAA* 18,000 Btu (1.5-ton) central 8,400 2.04 505 45 40 Identical NC
R5H5S19*K*AAA* 18,000 Btu (1.5-ton) central 8,400 2.00 749 4 59 Differs NC

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

24 of 24 shared model numbers All brand pairs

Updated Oct 26, 2026 · Methodology