What is the SEER2 rating of the Grandaire W5H5S30*K*AAA?

The Grandaire W5H5S30*K*AAA is rated at up to 15.2 SEER2 and 12.0 EER2 for cooling and up to 8.1 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Grandaire W5H5S30*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 2.5-ton model.

How much does the Grandaire W5H5S30*K*AAA cost to run per year?

At its rated efficiency it costs about $895-$2,288 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,089 in Phoenix and $1,900 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Which indoor units work with the Grandaire W5H5S30*K*AAA?

ENERGY STAR lists 8 certified combinations for this outdoor unit. The highest-rated ones use FMA5X36**AL, FMA5X30**AL, W5VC42M24XA.

2.5-ton central heat pump · 15 SEER2 HP

Grandaire W5H5S30KAAA

Below average cooling and heating efficiency for a 2.5-ton central heat pump, but not rated for cold climates.

Ranks #178 of 199 2.5 ton central heat pumps for cooling efficiency, and costs about $967 a year to run in a mixed climate like Atlanta.

SEER2: 15.2 Cooling efficiency over a season
Below average · beats 6%
HSPF2: 8.1 Heating efficiency over a season
Below average · beats 20%
EER2: 12.0 Cooling efficiency on a 95°F day
Average · beats 64%
Heat at 5°F: 13,900 BTU/h48% of its 47°F output
Very good · beats 83%

A good fit if…

You want a certified 2.5-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

Specifications2.5 ton, R-454B

General
Brand	Grandaire
Also sold as	ECOTEMP
Outdoor unit model	W5H5S30KAAA
Series	15 SEER2 HP
Type	Central heat pump
Nominal size	2.5 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 3, 2025
Cooling
SEER2Seasonal efficiency, higher is better	15.2 (range 15.2)
EER2Efficiency at 95°F outdoors	12.0-12.5
Cooling capacity	27,600-30,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8-8.1
Capacity at 47°F	28,000-29,000 BTU/h
Capacity at 17°F	17,200-17,800 BTU/h
Capacity at 5°F	13,500-13,900 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.06-2.26
ENERGY STAR cold climate	No

Heating output as it gets colder48% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FMA5X36**AL at the standard test temperatures, in BTU/h:

Certified matchups8 indoor units

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

Indoor unit	Furnace	SEER2	EER2	HSPF2	Heat @5°F	AHRI ref.
FMA5X36**AL	-	15.2	12.0	8.1	13,900	214424225
FMA5X36**AL	-	15.2	12.0	8.1	13,900	214424226
FMA5X30**AL	-	15.2	12.5	8.1	13,900	214424193
FMA5X30**AL	-	15.2	12.5	8.1	13,900	214424194
W5VC42M24XA	WFEU080C060B*	15.2	12.0	7.8	13,500	214136819
W5VC42M24XA	WFEU080C060B*	15.2	12.0	7.8	13,500	214136820
WCHL425*C	-	15.2	12.0	7.8	13,500	214179503
WCHL425*C	-	15.2	12.0	7.8	13,500	214179504

Yearly running cost in 10 large cities$895-$2,288

Phoenix, AZ$1,089/yr
Miami, FL$895/yr
Houston, TX$975/yr
Atlanta, GA$967/yr
Los Angeles, CA$937/yr
New York, NY$2,288/yr
Chicago, IL$1,853/yr
Denver, CO$1,536/yr
Seattle, WA$941/yr
Minneapolis, MN$1,900/yr

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

Questions5

What is the SEER2 rating of the Grandaire W5H5S30*K*AAA?: The Grandaire W5H5S30*K*AAA is rated at up to 15.2 SEER2 and 12.0 EER2 for cooling and up to 8.1 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Grandaire W5H5S30*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 2.5-ton model.
How much does the Grandaire W5H5S30*K*AAA cost to run per year?: At its rated efficiency it costs about $895-$2,288 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,089 in Phoenix and $1,900 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Which indoor units work with the Grandaire W5H5S30*K*AAA?: ENERGY STAR lists 8 certified combinations for this outdoor unit. The highest-rated ones use FMA5X36**AL, FMA5X30**AL, W5VC42M24XA.
What refrigerant does the Grandaire W5H5S30*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 $1,073/yrYou save $423/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 Grandaire W5H5S30*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: $1,073
Current system, per year: $1,495
You save per year: $423
Payback: 26.0 years
Net after 10 years: -$6,773

Cooling $672Heating $401Electricity used: 6,704 kWhSaved vs. a minimum-efficiency heat pump: $74

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.

Similar 2.5 ton models

EVCON RHP15030B2115.2 SEER2 · 8.1 HSPF2
Heil B5H6S30*K*AAA15.2 SEER2 · 8.1 HSPF2
Comfortmaker C5H6S30*K*AAA15.2 SEER2 · 8.1 HSPF2
Kenmore (C,H,T)5H6S30*K*AAA15.2 SEER2 · 8.1 HSPF2
Carrier 27SCA530A**3015.2 SEER2 · 8.1 HSPF2
Tempstar T5H6S30*K*AAA15.2 SEER2 · 8.1 HSPF2
Bryant PH5SAN530**AA15.2 SEER2 · 8.1 HSPF2
Thermal Zone TZP15AZ30AJ2N · cold climate15.2 SEER2 · 8.1 HSPF2

See all 199 2.5 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of July 3, 2025. How we use the data.