HVAC Rated

1.5-ton central heat pump · AHU Series

AproDr AHU19-18HN1-C

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

Ranks #49 of 170 1.5 ton central heat pumps for cooling efficiency, and costs about $515 a year to run in a mixed climate like Atlanta.

SEER2
18.8 Cooling efficiency over a season
Very good · beats 81%
HSPF2
9.1 Heating efficiency over a season
Average · beats 60%
EER2
11.0 Cooling efficiency on a 95°F day
Below average · beats 23%
Heat at 5°F
11,200 BTU/h62% of its 47°F output
Below average · beats 39%

A good fit if…

  • You want low cooling bills - its SEER2 beats 81% of central heat pumps.
  • You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

  • You often see nights below 0°F - it is not cold-climate certified.

Calculate my running cost

Details

Specifications1.5 ton, R-454B
General
BrandAproDr
Also sold asApooDr
Outdoor unit modelAHU19-18HN1-C
SeriesAHU Series
TypeCentral heat pump
Nominal size1.5 ton
CompressorVariable-speed units run longer at low powerContinuously variable
RefrigerantR-454B
Connected (smart) capableNo
On the market sinceJanuary 1, 2025
Last certifiedNovember 24, 2025
Cooling
SEER2Seasonal efficiency, higher is better18.8 (range 18.8)
EER2Efficiency at 95°F outdoors11.0
Cooling capacity18,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better9.1
Capacity at 47°F18,000 BTU/h
Capacity at 17°F12,600 BTU/h
Capacity at 5°F11,200 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater2.00
ENERGY STAR cold climateNo
Heating output as it gets colder62% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with AHU19-18HN1-A at the standard test temperatures, in BTU/h:

Certified matchups2 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 unitSEER2EER2HSPF2Heat @5°FAHRI ref.
AHU19-18HN1-A18.811.09.111,200217022150
AHU19-18HN1-A18.811.09.111,200217563528
Yearly running cost in 10 large cities$450-$1,241

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

Questions5
What is the SEER2 rating of the AproDr AHU19-18HN1-C?
The AproDr AHU19-18HN1-C is rated at up to 18.8 SEER2 and 11.0 EER2 for cooling and up to 9.1 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the AproDr AHU19-18HN1-C 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 AproDr AHU19-18HN1-C cost to run per year?
At its rated efficiency it costs about $450-$1,241 a year in electricity in large U.S. cities, depending on climate and local rates - for example $560 in Phoenix and $1,040 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 AproDr AHU19-18HN1-C?
ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated one uses AHU19-18HN1-A.
What refrigerant does the AproDr AHU19-18HN1-C 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 $559/yrYou save $370/yrSee details ↓
1. Where you live
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.

2. The heat pump AproDr AHU19-18HN1-C
3. What it replaces
4. Price replace the example with your quote
Heat pump, per year
$559
Current system, per year
$928
You save per year
$370
Payback
18.9 years
Net after 10 years
-$3,304

Cooling $337Heating $222Electricity used: 3,491 kWhSaved vs. a minimum-efficiency heat pump: $153

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 November 24, 2025. How we use the data.