What is the SEER2 rating of the Heil H5H6S60*K*AAA?

The Heil H5H6S60*K*AAA is rated at up to 15.2 SEER2 and 12.5 EER2 for cooling and up to 7.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Heil H5H6S60*K*AAA good for cold climates?

It is not cold-climate certified: none of its matchups meet the ENERGY STAR cold-climate criteria (a COP of at least 1.75 at 5°F among other limits). In places with frequent sub-zero nights, pick a cold-climate 5-ton model.

How much does the Heil H5H6S60*K*AAA cost to run per year?

At its rated efficiency it costs about $1,760-$4,536 a year in electricity in large U.S. cities, depending on climate and local rates - for example $2,146 in Phoenix and $3,772 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Heil H5H6S60*K*AAA the same as the Comfortmaker C5H6S60*K*AAA?

Yes, as far as the certified ratings go. ENERGY STAR lists both model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.

Which indoor units work with the Heil H5H6S60*K*AAA?

ENERGY STAR lists 3 certified combinations for this outdoor unit. The highest-rated one uses FTMA5B60L0D.

5-ton central heat pump · MAINLINE 16 SEER2 HP

Heil H5H6S60KAAA

Below average cooling and heating efficiency for a 5-ton central heat pump, but not rated for cold climates.

Ranks #89 of 100 5 ton central heat pumps for cooling efficiency, and costs about $1,914 a year to run in a mixed climate like Atlanta.

SEER2: 15.2 Cooling efficiency over a season
Below average · beats 6%
HSPF2: 7.8 Heating efficiency over a season
Below average · beats 5%
EER2: 12.5 Cooling efficiency on a 95°F day
Very good · beats 80%
Heat at 5°F: 28,400 BTU/h51% of its 47°F output
Very good · beats 71%

A good fit if…

You want a certified 5-ton central heat pump at a typical efficiency level.

Think twice if…

You often see nights below 0°F - it is not cold-climate certified.
Cooling cost matters most - its SEER2 is below average for central heat pumps.
You mainly need heat - its HSPF2 is below average for central heat pumps.
Comfort and noise matter - a single-stage compressor runs only full-on or off.

Calculate my running cost

Details

Specifications5 ton, R-454B

General
Brand	Heil
Also sold as	Airquest, Arcoaire, Comfortmaker, Day & Night, Keeprite
Outdoor unit model	H5H6S60KAAA
Series	MAINLINE 16 SEER2 HP
Type	Central heat pump
Nominal size	5 ton
CompressorVariable-speed units run longer at low power	Single stage
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	January 1, 2024
Last certified	July 16, 2026
Cooling
SEER2Seasonal efficiency, higher is better	15.2 (range 15.2)
EER2Efficiency at 95°F outdoors	12.5
Cooling capacity	57,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8
Capacity at 47°F	55,500 BTU/h
Capacity at 17°F	35,400 BTU/h
Capacity at 5°F	28,400 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.18
ENERGY STAR cold climate	No

Heating output as it gets colder51% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FTMA5B60L0D at the standard test temperatures, in BTU/h:

Certified matchups3 indoor units

The same outdoor unit scores differently with each indoor unit. Ask your installer for the AHRI reference number of the exact system you are quoted.

Indoor unit	SEER2	EER2	HSPF2	Heat @5°F	AHRI ref.
FTMA5B60L0D	15.2	12.5	7.8	28,400	214602003
FTMA5B60L0D	15.2	12.5	7.8	28,400	214602004
FTMA5B60L0D	15.2	12.5	7.8	28,400	214602005

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the Heil H5H6S60*K*AAA: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

Comfortmaker C5H6S60*K*AAA

Yearly running cost in 10 large cities$1,760-$4,536

Phoenix, AZ$2,146/yr
Miami, FL$1,760/yr
Houston, TX$1,922/yr
Atlanta, GA$1,914/yr
Los Angeles, CA$1,856/yr
New York, NY$4,536/yr
Chicago, IL$3,676/yr
Denver, CO$3,050/yr
Seattle, WA$1,869/yr
Minneapolis, MN$3,772/yr

At each state's average electricity price and the city's typical heating and cooling hours.

Questions6

What is the SEER2 rating of the Heil H5H6S60*K*AAA?: The Heil H5H6S60*K*AAA is rated at up to 15.2 SEER2 and 12.5 EER2 for cooling and up to 7.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Heil H5H6S60*K*AAA good for cold climates?: It is not cold-climate certified: none of its matchups meet the ENERGY STAR cold-climate criteria (a COP of at least 1.75 at 5°F among other limits). In places with frequent sub-zero nights, pick a cold-climate 5-ton model.
How much does the Heil H5H6S60*K*AAA cost to run per year?: At its rated efficiency it costs about $1,760-$4,536 a year in electricity in large U.S. cities, depending on climate and local rates - for example $2,146 in Phoenix and $3,772 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Heil H5H6S60*K*AAA the same as the Comfortmaker C5H6S60*K*AAA?: Yes, as far as the certified ratings go. ENERGY STAR lists both model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.
Which indoor units work with the Heil H5H6S60*K*AAA?: ENERGY STAR lists 3 certified combinations for this outdoor unit. The highest-rated one uses FTMA5B60L0D.
What refrigerant does the Heil H5H6S60*K*AAA use?: It uses R-454B.

Running cost and savings

Pre-filled with this model. Pick your city and what you heat with today; everything else is optional.

Heat pump $2,117/yrYou save $798/yrSee details ↓

1. Where you live

StateCityElectricity ¢ per kWh

Adjust heating and cooling hours

Filled in from your city's climate. Change them if you run the system much more or less than usual.

Cooling hours full-load hours per yearHeating hours full-load hours per year

2. The heat pump Heil H5H6S60*K*AAA

Find a model (fills in the ratings below)

SEER2 cooling efficiencyHSPF2 heating efficiencyCooling capacity BTU/hHeating capacity BTU/h

3. What it replaces

Current heatingFurnace efficiency (AFUE %)Gas price, $/thermCurrent coolingOld AC rating SEER2 (10 ≈ 15+ years old)

4. Price replace the example with your quote

Installed price, $Rebates and incentives, $ utility, state

Heat pump, per year: $2,117
Current system, per year: $2,915
You save per year: $798
Payback: 27.0 years
Net after 10 years: -$13,524

Cooling $1,320Heating $797Electricity used: 13,231 kWhSaved vs. a minimum-efficiency heat pump: $115

Estimates use the unit's rated SEER2 and HSPF2, full-load hours derived from NOAA 1991-2020 degree days, average residential electricity prices from the U.S. EIA (12 months to July 2026) and fuel prices from EIA (2025 for natural gas, week of 2026-10-05 for propane and heating oil). Very cold days that need backup heat are not modelled. Federal minimum for comparison: 14.3 SEER2 / 7.5 HSPF2.

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Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of July 16, 2026. How we use the data.