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Are Maratherm and Tempstar heat pumps the same?

30 model numbers are listed under both Maratherm and Tempstar. For 28 of them the certified record is the same record under each brand.

  • 30 shared model numbers
  • 28 identical records
  • 2 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
Maratherm 30 1,265 100%
Tempstar 175 13,650 17.1%

“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

30 of 30 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 Maratherm and Tempstar
Model number Size class TypeHeat at 5°FBtu/hkW COP at 5°F Pairings Maratherm Tempstar Same record Cold climate
N5H8T60*K*AAA* 54,000 Btu (4.5-ton) central 30,200 2.25 1,164 71 122 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
PHB560000K000B 54,000 Btu (4.5-ton) central 25,800 2.00 11 1 1 Identical NC
N5H8T48*K*AAA* 48,000 Btu (4-ton) central 25,000 2.15 3,888 243 407 Identical NC
N5H5S48*K*AAA* 48,000 Btu (4-ton) central 24,400 2.28 53 5 5 Identical NC
R5H5S48*K*AAA* 48,000 Btu (4-ton) central 24,400 2.28 53 5 5 Identical 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 4 4 Identical NC
R5H5S42*K*AAA* 42,000 Btu (3.5-ton) central 19,900 2.26 43 4 4 Identical NC
N5H8T36*K*AAA* 36,000 Btu (3-ton) central 19,000 2.24 2,442 145 256 Identical NC
PHB548000K000B 48,000 Btu (4-ton) central 18,200 1.80 11 1 1 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 29 Identical NC
R5H5S36*K*AAA* 36,000 Btu (3-ton) central 17,500 2.18 312 26 29 Identical NC
PHB536000K000B 36,000 Btu (3-ton) central 14,100 1.70 11 1 1 Identical NC
R5H5S31*K*AAA* 30,000 Btu (2.5-ton) central 14,000 2.06 382 33 39 Identical NC
N5H5S30*K*AAA* 30,000 Btu (2.5-ton) central 13,500 2.10 64 6 6 Identical NC
R5H5S30*K*AAA* 30,000 Btu (2.5-ton) central 13,500 2.10 64 6 6 Identical NC
N4H5S30*K*AAA* 30,000 Btu (2.5-ton) central 12,900 2.10 11 1 1 Identical NC
R4H5S30*K*AAA* 30,000 Btu (2.5-ton) central 12,900 2.10 11 1 1 Identical 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 1,985 137 187 Identical NC
R5H5S24*K*AAA* 24,000 Btu (2-ton) central 11,400 2.10 1,988 137 187 Identical NC
N5H8T24*K*AAA* 24,000 Btu (2-ton) central 11,100 2.06 4,839 266 514 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 40 47 Identical NC
PHB524000K000B 24,000 Btu (2-ton) central 8,400 1.60 11 1 1 Identical NC
R5H5S18*K*AAA* 18,000 Btu (1.5-ton) central 8,400 2.04 505 40 47 Identical NC
R5H5S19*K*AAA* 18,000 Btu (1.5-ton) central 8,400 2.00 749 59 77 Identical NC

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

30 of 30 shared model numbers All brand pairs

Updated Oct 26, 2026 · Methodology