Heat Pump List
Menu

Sections

Tools

NS21H36MA5-**A

NS21H36MA5-**A is in the certified data.

Its certified full-speed heating output at 5°F is 18,400–24,400 Btu/h, 56–76% of its 47°F rating (tests at different compressor speeds), depending on the pairing.

GE · central heat pump

All 89 certified GE models

NS21H36MA5-**A is in the certified data as of Sep 19, 2026.

133 certified pairings with 113 different figures. See all

Heating at 47°F

31,400

30,800 at 17°F

22,400 at 5°F

Btu/h, certified

1.94 COP at 5°F

Cooling at 95°F

33,000

Btu/h, certified

EER2 11.5 at 95°F

SEER2 15.5

Heating and cooling by outdoor temperature

Certified heating at 5, 17, and 47°F and cooling at 95°F for NS21H36MA5-**A, by outdoor temperature Heating: 22,400 Btu/h at 5°F, 30,800 Btu/h at 17°F, 31,400 Btu/h at 47°F. Cooling: 33,000 Btu/h at 95°F. The bars start at zero. Median of 3-ton central models: 26,400 Btu/h at 5°F, 26,200 Btu/h at 17°F, 35,200 Btu/h at 47°F, 35,000 Btu/h at 95°F. 0 10,000 20,000 30,000 40,000 Btu/h 22,400 5°F 30,800 17°F 31,400 47°F 33,000 95°F Outdoor temperature (°F)
  • Heating output
  • Cooling output
  • Median of 3-ton central models
  • Example heating load
  • Example cooling load
  • Frosting range, 17 to 45°F

This pairing delivers 31,400 Btu/h of heat at 47°F, 30,800 Btu/h at 17°F, and 22,400 Btu/h at 5°F, 71% of its 47°F rating. It delivers 33,000 Btu/h of cooling at 95°F. At 5°F that is 4,100 Btu/h short of the example heating load of 26,500 Btu/h; at 95°F it is 20,000 Btu/h above the example cooling load of 13,000 Btu/h.

Each bar is a separate certified test, drawn at its outdoor temperature, starting at zero. The 47°F figure is at normal speed; the 17 and 5°F figures are at full speed. The short dark line on each bar is the median of 3-ton central models, one value per model. The shaded 17 to 45°F band is the frosting range: the outdoor coil can frost, and the unit pauses to defrost.

The dashed lines are example loads for a typical area of about 1,100 sq ft where winters reach 5°F: heating runs from 26,500 Btu/h at 5°F to 0 at 65°F, and cooling runs from 0 at 65°F to 13,000 Btu/h at 95°F, at 1,000 sq ft per ton. A house in a hot climate or with large west-facing windows can need twice as much cooling. They are examples, not your building.

Calculate heating and cooling for your house

AHRI certificate 217642581 · listed by GE · certified Aug 21, 2025 · 2 pairings share these values

Rebates where you live

Meets the recorded equipment thresholds of 62 programs in 37 states, provinces, or territories:Alabama (1), Arizona (1), California (3), Colorado (1), Connecticut (3), Delaware (2), Idaho (2), Illinois (1), Kansas (1), Kentucky (1), Maryland (3), Massachusetts (3), Michigan (2), Minnesota (3), Mississippi (2), Nevada (1), New Hampshire (3), New Jersey (3), New York (4), North Carolina (1), Oregon (2), Pennsylvania (2), Rhode Island (3), South Carolina (1), Tennessee (1), Texas (2), Utah (1), Vermont (3), Washington (3), Wisconsin (1), British Columbia (3), Manitoba (1), New Brunswick (1), Newfoundland and Labrador (1), Nova Scotia (2), Ontario (1), Yukon (2).

All 62 programs by state and province

Alabama

Arizona

California

Colorado

Connecticut

Delaware

Idaho

Illinois

Kansas

Kentucky

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Nevada

New Hampshire

New Jersey

New York

North Carolina

Oregon

Pennsylvania

Rhode Island

South Carolina

Tennessee

Texas

Utah

Vermont

Washington

Wisconsin

British Columbia

Manitoba

New Brunswick

Newfoundland and Labrador

Nova Scotia

Ontario

Yukon

Threshold comparisons use the unit’s median certified figures across its pairings, not the pairing selected above. Meeting these thresholds means the equipment may qualify; it does not guarantee approval. Service-area, installation, and product-list requirements also apply.

All rebate programs and their published thresholds

Certified output and power use

Certified output for the selected pairingThe four bars share one scale. The comparison is with the median of 3-ton central models. Heating tests run at 70°F indoors. The cooling test runs at 80°F indoors.
Outdoor temperature Certified outputBtu/h One scale vs class median COPat 5°F
5°Ffull speed 22,4006.56 kW −15% 1.94
17°Ffull speed 30,8009.03 kW +18% NR
47°Fnormal speed 31,4009.20 kW −11% NR
95°Fcooling, full load 33,0009.67 kW — NR

EER2 11.5 in that test. SEER2 15.5 over the modeled cooling season.

Power use at each temperature

Electrical input in the 5°F full-speed test
3.38kW
Electrical input in the 95°F cooling test
2.87kW
Seasonal average heating COP
2.81

These exclude backup resistance heat.

Updated Sep 19, 2026 · Methodology

How it compares with other 36,000 Btu heat pumps

3-ton central models

This pairing at 5°F
22,400 Btu/h
This unit at 5°F median across its pairings
22,400 Btu/h
Median of 3-ton central models at 5°F
26,400 Btu/h
Models in this group
451

This unit is above 33% of them, at number 301 of 451 by heat at 5°F. The middle half of the group runs 18,650 to 32,000 Btu/h.

This size class is defined by cooling capacity, so cooling is not compared here.

Among 36,000 Btu central models, each by its median certified pairing, highest first: 5°F output as a share of its 47°F rating, 284th of 451 (tied); HSPF2, 146th of 467 (tied). Models without that figure are left out.

Similar ratings at 47°F

These central models share the nominal cooling size. Comparisons use each model’s median certified figures across pairings.

  • HH836E2S11: The same 31,600 Btu/h rating at 47°F; 25,400 Btu/h at 5°F (this model: 22,400).
  • 4TWV0X36A1: The same 31,600 Btu/h rating at 47°F; HSPF2 8.5 (this model: 9.0).
  • 5TWR5036A1: 31,400 Btu/h at 47°F (this model: 31,600); 17,300 Btu/h at 5°F (this model: 22,400).

Closest models by heat at 5°F

Every 36,000 Btu (3-ton) unit, ranked by cooling efficiency, then heating efficiency

Floor area at the cold test point

The median certified output of 22,400 Btu/h at 5°F matches the size calculator’s heating estimate for these floor areas, rounded to about 10 sq ft. Each range divides that output by the climate band’s heating rates.

Floor area by climate band and house condition
Climate bandHouse conditionBtu/h per sq ftApproximate sq ft
MildDrafty, little insulation24–42530–930
MildTypical16–26860–1,400
MildTight, well insulated10–181,240–2,240
ColdDrafty, little insulation28–52430–800
ColdTypical18–30750–1,240
ColdTight, well insulated12–221,020–1,870
Very coldDrafty, little insulation32–58390–700
Very coldTypical22–38590–1,020
Very coldTight, well insulated16–28800–1,400

This is an estimate, not a house-specific load calculation. Output stays at the 5°F test point for every band; it does not predict output at the band’s winter design temperature.

Certified values for NS21H36MA5-**A

133 pairings · 133 AHRI certificates

This pairing is the one shown above. Under all pairings, a single figure means every pairing agrees and a range means the pairing decides.

This pairingAll pairings
Heating
Heat output at 47°F normal speed 31,400 Btu/h 30,000–34,600 Btu/h
Heat output at 17°F full speed 30,800 Btu/h 26,600–31,400 Btu/h
Heat output at 5°F full speed 22,400 Btu/h 18,400–24,400 Btu/h
Heat output below 5°F NR NR
Cold output 5°F output as a % of the 47°F rating 71%
COP at 5°F full speed 1.94 1.90–2.46
HSPF2 Region IV 9.6 8.5–10.4
Cooling
Cooling capacity at 95°F full-load test 33,000 Btu/h 32,000–34,800 Btu/h
EER2 at 95°F 11.5 11.0–12.2
SEER2 cooling season 15.5 15.2–20.0
Cooling at other temperatures NR NR
Equipment and listing
Refrigerant R-454B
Compressor Variable speed
Indoor unit NCHC42CT5*-**+TDR 14 indoor units
FurnaceNF80U110S5C* 60 furnaces
Cold-climate designation EPA's designation, as published Yes On some pairings
ENERGY STAR Most Efficient EPA's designation, as published No On some pairings
Where it is sold United States US and Canada
Model string as certified NS21H36MA5-**A

Across 133 certified pairings with 14 indoor models: heat at 5°F 18,400 Btu/h with NCU[C,U]30AT5*-**+TDR to 24,400 Btu/h with NAM42E1TA5*-**; HSPF2 8.5 with NAM36V1TA5*-** to 10.4 with NCU[C,U]30AT5*-**+TDR; SEER2 15.2 with NCHC36CT5*-**+TDR to 20.0 with NAM42V1TA5*-**. Endpoints name one indoor model where recorded; the furnace pairing can also change the figures.

Pairings, by indoor-unit class

14 indoor units · 133 certified pairings

One row per indoor unit certified with this outdoor unit.

Furnace paired · 10 indoor units

  1. NCU[C,U]30BT5*-**+TDR brand not stated 22,600 Btu/hat 5°F, full speed

    18 pairings, 18 with a furnace · 47°F 33,400 Btu/h · 95°F cooling 33,000 Btu/h · Cold output 68% · COP 2.26

  2. NCHC30BT5*-**+TDR brand not stated 22,600 Btu/hat 5°F, full speed

    16 pairings, 16 with a furnace · 47°F 30,800 Btu/h · 95°F cooling 33,200 Btu/h · Cold output 73% · COP 2.42

  3. NCU[C,U]36BT5*-**+TDR brand not stated 21,900 Btu/hat 5°F, full speed

    16 pairings, 16 with a furnace · 47°F 30,800 Btu/h · 95°F cooling 33,800 Btu/h · Cold output 71% · COP 2.05

  4. NCU[C,U]37CT5*-**+TDR brand not stated 21,600 Btu/hat 5°F, full speed

    15 pairings, 15 with a furnace · 47°F 30,600 Btu/h · 95°F cooling 33,800 Btu/h · Cold output 71% · COP 2.06

  5. NCHC42CT5*-**+TDR brand not stated 22,600 Btu/hat 5°F, full speed

    14 pairings, 14 with a furnace · 47°F 31,500 Btu/h · 95°F cooling 32,800 Btu/h · Cold output 71% · COP 1.94

  6. NCHC36CT5*-**+TDR brand not stated 21,600 Btu/hat 5°F, full speed

    12 pairings, 12 with a furnace · 47°F 32,400 Btu/h · 95°F cooling 33,600 Btu/h · Cold output 67% · COP 2.04

  7. NCU[C,U]30AT5*-**+TDR brand not stated 22,600 Btu/hat 5°F, full speed

    10 pairings, 10 with a furnace · 47°F 33,200 Btu/h · 95°F cooling 32,800 Btu/h · Cold output 68% · COP 2.26

  8. NCU[C,U]36AT5*-**+TDR brand not stated 21,800 Btu/hat 5°F, full speed

    9 pairings, 9 with a furnace · 47°F 30,800 Btu/h · 95°F cooling 33,600 Btu/h · Cold output 71% · COP 2.06

  9. NCHC30AT5*-**+TDR brand not stated 24,000 Btu/hat 5°F, full speed

    8 pairings, 8 with a furnace · 47°F 31,600 Btu/h · 95°F cooling 32,600 Btu/h · Cold output 76% · COP 1.95

  10. NCDC36CT5*-**+TDR brand not stated 19,400 Btu/hat 5°F, full speed

    7 pairings, 7 with a furnace · 47°F 34,200 Btu/h · 95°F cooling 34,000 Btu/h · Cold output 57% · COP 2.30

Indoor units in the furnace paired class
Indoor unit Brand At 5°FBtu/h · full speed At 47°FBtu/h · normal speed At 95°FBtu/h · cooling Cold output% of 47°F rating COP 5°Ffull speed Cold climate Pairings
NCU[C,U]30BT5*-**+TDR — 22,600 33,400 33,000 68% 2.26 NC 18
NCHC30BT5*-**+TDR — 22,600 30,800 33,200 73% 2.42 Yes 16
NCU[C,U]36BT5*-**+TDR — 21,900 30,800 33,800 71% 2.05 Yes 16
NCU[C,U]37CT5*-**+TDR — 21,600 30,600 33,800 71% 2.06 Yes 15
NCHC42CT5*-**+TDR — 22,600 31,500 32,800 71% 1.94 Yes 14
NCHC36CT5*-**+TDR — 21,600 32,400 33,600 67% 2.04 NC 12
NCU[C,U]30AT5*-**+TDR — 22,600 33,200 32,800 68% 2.26 NC 10
NCU[C,U]36AT5*-**+TDR — 21,800 30,800 33,600 71% 2.06 Yes 9
NCHC30AT5*-**+TDR — 24,000 31,600 32,600 76% 1.95 Yes 8
NCDC36CT5*-**+TDR — 19,400 34,200 34,000 57% 2.30 NC 7

The share is heat output at 5°F divided by the 47°F rating.

Showing 10 of 14 indoor units All 133 certified pairings

Sold as, and units with identical certified values

Brands listing this model number

Model number as listed

  • NS21H36MA5-**A 133 pairings

What affects the price

We don't have prices. These things drive the cost.

  • The size of the unit, and the indoor equipment on the same certificate.
  • Whether existing ductwork is reused, altered, or replaced.
  • The electrical work: a circuit, a disconnect, and sometimes a panel change.
  • Refrigerant line length and how the outdoor unit is mounted.
  • Permits and inspection, which vary by municipality.
  • Removing and disposing of the old equipment.
  • Local labor rates and how busy the season is.
  • Rebates and tax credits, which change and have deadlines.

History and definitions

Other NS21H SERIES models by nominal cooling size: NS21H24MA5-**A (24,000 Btu), NS21H48MA5-**A (48,000 Btu), NS21H60MA5-**A (54,000 Btu).

History

First certified record
Most recent certified record
Measurements reported
Aug 21, 2025
Status
In the certified data

Field definitions

COP
Heat delivered for each unit of electricity used. A COP of 2.5 gives 2.5 times the heat of an electric baseboard heater.
HSPF2
Heating efficiency over a typical season. Higher uses less electricity.
SEER2
Cooling efficiency over a typical season. Higher uses less electricity.
EER2
Cooling output divided by electrical input in the 95°F full-load test, in Btu/h per watt.
Cold output
Heat output at 5°F as a percentage of the 47°F rating.
% of rating at 17°F
Heat output at 17°F as a percentage of the 47°F rating.

NR not in the certified dataNC not cold-climate certifiedSP single pairing onlyVP varies by pairing; see the pairings tableWD withdrawn since the certified data was last read

Cite or print this page

Heat Pump List, “NS21H36MA5-**A — certified heat output”. Certified figures dated , checked daily.
https://heatpumplist.com/model/ns21h36ma5-_st_sta