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Are Maratherm and Smart Comfort heat pumps the same?

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

  • 18 shared model numbers
  • 14 identical records
  • 4 records that differ
  • Updated Oct 17, 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 60%
Smart Comfort 108 2,286 16.7%

“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

18 of 18 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 Smart Comfort
Model number Size class TypeHeat at 5°FBtu/hkW COP at 5°F Pairings Maratherm Smart Comfort Same record Cold climate
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
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
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
N5H5S36*K*AAA* 36,000 Btu (3-ton) central 17,500 2.18 312 26 28 Identical NC
R5H5S36*K*AAA* 36,000 Btu (3-ton) central 17,500 2.18 312 26 28 Identical NC
R5H5S31*K*AAA* 30,000 Btu (2.5-ton) central 14,000 2.06 382 33 33 Identical NC
N5H5S30*K*AAA* 30,000 Btu (2.5-ton) central 13,500 2.10 64 6 5 Differs NC
R5H5S30*K*AAA* 30,000 Btu (2.5-ton) central 13,500 2.10 64 6 5 Differs 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
N5H5S24*K*AAA* 24,000 Btu (2-ton) central 11,400 2.10 1,985 137 170 Differs NC
R5H5S24*K*AAA* 24,000 Btu (2-ton) central 11,400 2.10 1,988 137 170 Differs NC
N5H5S18*K*AAA* 18,000 Btu (1.5-ton) central 8,400 2.04 505 40 44 Identical NC
R5H5S18*K*AAA* 18,000 Btu (1.5-ton) central 8,400 2.04 505 40 44 Identical NC
R5H5S19*K*AAA* 18,000 Btu (1.5-ton) central 8,400 2.00 749 59 70 Identical NC

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

18 of 18 shared model numbers All brand pairs

Updated Oct 17, 2026 · Methodology