What is the SEER2 rating of the Day & Night R5H5S19*K*AAA?

The Day & Night R5H5S19*K*AAA is rated at up to 16.0 SEER2 and 13.0 EER2 for cooling and up to 8.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 749 certified matchups SEER2 ranges from 15.2-16.0.

Is the Day & Night R5H5S19*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 1.5-ton model.

How much does the Day & Night R5H5S19*K*AAA cost to run per year?

At its rated efficiency it costs about $561-$1,526 a year in electricity in large U.S. cities, depending on climate and local rates - for example $695 in Phoenix and $1,277 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 Day & Night R5H5S19*K*AAA?

ENERGY STAR lists 749 certified combinations for this outdoor unit. The highest-rated ones use FM(C,U)5Z30**AL, EA*5X25M17A, EA*5X19M17A.

1.5-ton central heat pump · 15 SEER2 HP

Day & Night R5H5S19KAAA

Below average cooling and heating efficiency for a 1.5-ton central heat pump, but not rated for cold climates.

Ranks #128 of 170 1.5 ton central heat pumps for cooling efficiency, and costs about $636 a year to run in a mixed climate like Atlanta.

SEER2: 16.0 Cooling efficiency over a season
Below average · beats 26%
HSPF2: 8.0 Heating efficiency over a season
Below average · beats 12%
EER2: 13.0 Cooling efficiency on a 95°F day
Very good · beats 89%
Heat at 5°F: 8,500 BTU/h43% of its 47°F output
Below average · beats 39%

A good fit if…

You want a choice of indoor units - 749 certified pairings.

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

Specifications1.5 ton, R-454B

General
Brand	Day & Night
Also sold as	Keeprite, Kenmore, Tempstar, Heil, Airquest, Arcoaire, Comfortmaker, Smart Comfort, MARATHERM, ACIQ
Outdoor unit model	R5H5S19KAAA
Series	15 SEER2 HP
Type	Central heat pump
Nominal size	1.5 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	16.0 (range 15.2-16.0)
EER2Efficiency at 95°F outdoors	12.5-13.0
Cooling capacity	17,700-19,300 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8-8.0
Capacity at 47°F	18,400-19,500 BTU/h
Capacity at 17°F	10,300-11,000 BTU/h
Capacity at 5°F	7,900-8,500 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.90-2.00
ENERGY STAR cold climate	No

Heating output as it gets colder43% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FM(C,U)5Z30**AL at the standard test temperatures, in BTU/h:

Certified matchups749 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 749 are shown. 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.
FM(C,U)5Z30**AL	-	16.0	13.0	8.0	8,100	217687093
FM(C,U)5Z30**AL	-	16.0	13.0	8.0	8,100	217687095
FM(C,U)5Z30**AL	-	16.0	13.0	8.0	8,100	217687097
FM(C,U)5Z30**AL	-	16.0	13.0	8.0	8,100	217687099
FM(C,U)5Z30**AL	-	16.0	13.0	8.0	8,100	217687101
FM(C,U)5Z30**AL	-	16.0	13.0	8.0	8,100	217687103
FM(C,U)5Z30**AL	-	16.0	13.0	8.0	8,100	217687105
FM(C,U)5Z30**AL	-	16.0	13.0	8.0	8,100	217687107
FM(C,U)5Z30**AL	-	16.0	13.0	8.0	8,100	217687109
FM(C,U)5Z30**AL	-	16.0	13.0	8.0	8,100	217687111
EA*5X25M17A	95MSU0601716A	16.0	12.5	8.0	8,400	217705764
EA*5X25M17A	95MSU0601716A	16.0	12.5	8.0	8,400	217705766
EA*5X25M17A	95MSU0601716A	16.0	12.5	8.0	8,400	217705768
EA*5X25M17A	95MSU0601716A	16.0	12.5	8.0	8,400	217705770
EA*5X25M17A	95MSU0601716A	16.0	12.5	8.0	8,400	217705772
EA*5X25M17A	95MSU0601716A	16.0	12.5	8.0	8,400	217705774
EA*5X25M17A	95MSU0601716A	16.0	12.5	8.0	8,400	217705776
EA*5X25M17A	95MSU0601716A	16.0	12.5	8.0	8,400	217705778
EA*5X25M17A	95MSU0601716A	16.0	12.5	8.0	8,400	217705780
EA*5X25M17A	95MSU0601716A	16.0	12.5	8.0	8,400	217705782
EA*5X25M17A	96CTN0801714B	16.0	13.0	8.0	8,300	217705832
EA*5X25M17A	96CTN0801714B	16.0	13.0	8.0	8,300	217705834
EA*5X25M17A	96CTN0801714B	16.0	13.0	8.0	8,300	217705836
EA*5X25M17A	96CTN0801714B	16.0	13.0	8.0	8,300	217705838
EA*5X25M17A	96CTN0801714B	16.0	13.0	8.0	8,300	217705840
EA*5X25M17A	96CTN0801714B	16.0	13.0	8.0	8,300	217705842
EA*5X25M17A	96CTN0801714B	16.0	13.0	8.0	8,300	217705844
EA*5X25M17A	96CTN0801714B	16.0	13.0	8.0	8,300	217705846
EA*5X25M17A	96CTN0801714B	16.0	13.0	8.0	8,300	217705848
EA*5X19M17A	92MSN0601714A	16.0	13.0	8.0	8,400	217702477
EA*5X19M17A	92MSN0601714A	16.0	13.0	8.0	8,400	217702479
EA*5X19M17A	92MSN0601714A	16.0	13.0	8.0	8,400	217702481
EA*5X19M17A	92MSN0601714A	16.0	13.0	8.0	8,400	217702483
EA*5X19M17A	92MSN0601714A	16.0	13.0	8.0	8,400	217702485
EA*5X19M17A	92MSN0601714A	16.0	13.0	8.0	8,400	217702487
EA*5X19M17A	92MSN0601714A	16.0	13.0	8.0	8,400	217702489
EA*5X19M17A	92MSN0601714A	16.0	13.0	8.0	8,400	217702491
EA*5X19M17A	92MSN0601714A	16.0	13.0	8.0	8,400	217702493
EA*5X19M17A	92MSN0601714A	16.0	13.0	8.0	8,400	217702495
EA*5X19M17A	92MSN0801716A	16.0	13.0	8.0	8,300	217702502
EA*5X19M17A	92MSN0801716A	16.0	13.0	8.0	8,300	217702504
EA*5X19M17A	92MSN0801716A	16.0	13.0	8.0	8,300	217702506
EA*5X19M17A	92MSN0801716A	16.0	13.0	8.0	8,300	217702508
EA*5X19M17A	92MSN0801716A	16.0	13.0	8.0	8,300	217702510
EA*5X19M17A	92MSN0801716A	16.0	13.0	8.0	8,300	217702514
EA*5X19M17A	92MSN0801716A	16.0	13.0	8.0	8,300	217702512
EA*5X19M17A	92MSN0801716A	16.0	13.0	8.0	8,300	217702516
EA*5X19M17A	92MSN0801716A	16.0	13.0	8.0	8,300	217702518
EA*5X19M17A	92MSN0801716A	16.0	13.0	8.0	8,300	217702520
EA*5X25M17A	80MS(N,L)0451412A	16.0	13.0	8.0	8,400	217704918
EA*5X25M17A	80MS(N,L)0451412A	16.0	13.0	8.0	8,400	217704920
EA*5X25M17A	80MS(N,L)0451412A	16.0	13.0	8.0	8,400	217704922
EA*5X25M17A	80MS(N,L)0451412A	16.0	13.0	8.0	8,400	217704924
EA*5X25M17A	80MS(N,L)0451412A	16.0	13.0	8.0	8,400	217704926
EA*5X25M17A	80MS(N,L)0451412A	16.0	13.0	8.0	8,400	217704928
EA*5X25M17A	80MS(N,L)0451412A	16.0	13.0	8.0	8,400	217704930
EA*5X25M17A	80MS(N,L)0451412A	16.0	13.0	8.0	8,400	217704932
EA*5X25M17A	80MS(N,L)0451412A	16.0	13.0	8.0	8,400	217704934
EA*5X25M17A	80MS(N,L)0451412A	16.0	13.0	8.0	8,400	217704936
EA*5X25M17A	80MS(N,L)0701412A	16.0	13.0	8.0	8,300	217704968

Yearly running cost in 10 large cities$561-$1,526

Phoenix, AZ$695/yr
Miami, FL$561/yr
Houston, TX$623/yr
Atlanta, GA$636/yr
Los Angeles, CA$620/yr
New York, NY$1,526/yr
Chicago, IL$1,240/yr
Denver, CO$1,032/yr
Seattle, WA$635/yr
Minneapolis, MN$1,277/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 Day & Night R5H5S19*K*AAA?: The Day & Night R5H5S19*K*AAA is rated at up to 16.0 SEER2 and 13.0 EER2 for cooling and up to 8.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 749 certified matchups SEER2 ranges from 15.2-16.0.
Is the Day & Night R5H5S19*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 1.5-ton model.
How much does the Day & Night R5H5S19*K*AAA cost to run per year?: At its rated efficiency it costs about $561-$1,526 a year in electricity in large U.S. cities, depending on climate and local rates - for example $695 in Phoenix and $1,277 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 Day & Night R5H5S19*K*AAA?: ENERGY STAR lists 749 certified combinations for this outdoor unit. The highest-rated ones use FM(C,U)5Z30**AL, EA*5X25M17A, EA*5X19M17A.
What refrigerant does the Day & Night R5H5S19*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 $692/yrYou save $298/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 Day & Night R5H5S19*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: $692
Current system, per year: $990
You save per year: $298
Payback: 23.5 years
Net after 10 years: -$4,020

Cooling $420Heating $272Electricity used: 4,324 kWhSaved vs. a minimum-efficiency heat pump: $68

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 1.5 ton models

Carrier 27SPA619A**3016.0 SEER2 · 8.0 HSPF2
ECOTEMP W5H5S19*K*AAA16.0 SEER2 · 8.0 HSPF2
Bryant PH5SAN519**AA16.0 SEER2 · 8.0 HSPF2
Heil B5H6S19*K*AAA16.0 SEER2 · 8.0 HSPF2
Bryant GH5SAN519**AA16.0 SEER2 · 8.0 HSPF2
Heil H5H6S19*K*AAA16.0 SEER2 · 8.0 HSPF2
WeatherKing WP15AZ18AJ2N · cold climate16.0 SEER2 · 8.1 HSPF2
Luxaire XH618E2S1116.0 SEER2 · 8.0 HSPF2

See all 170 1.5 ton central heat pumps, ranked

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