What is the SEER2 rating of the Lennox VPC018H4M-3P?

The Lennox VPC018H4M-3P is rated at up to 19.2 SEER2 and 12.5 EER2 for cooling and up to 9.4 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 3 certified matchups SEER2 ranges from 17.2-19.2.

Is the Lennox VPC018H4M-3P 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 18,000 BTU model.

How much does the Lennox VPC018H4M-3P cost to run per year?

At its rated efficiency it costs about $447-$1,315 a year in electricity in large U.S. cities, depending on climate and local rates - for example $568 in Phoenix and $1,111 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Lennox VPC018H4M-3P the same as the Midea MDV-V18WMN1T?

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.

What refrigerant does the Lennox VPC018H4M-3P use?

It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

18,000 BTU mini-split heat pump · Lennox Real

Lennox VPC018H4M-3P

Below average cooling and heating efficiency for a 18,000 BTU mini-split heat pump, but not rated for cold climates.

Ranks #434 of 465 18,000 BTU mini-splits for cooling efficiency, and costs about $538 a year to run in a mixed climate like Atlanta.

SEER2: 19.2 Cooling efficiency over a season
Below average · beats 11%
HSPF2: 9.4 Heating efficiency over a season
Below average · beats 19%
EER2: 12.5 Cooling efficiency on a 95°F day
Average · beats 44%
Heat at 5°F: 12,300 BTU/h62% of its 47°F output
Below average · beats 0%

A good fit if…

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.
Cooling cost matters most - its SEER2 is below average for mini-splits.
You mainly need heat - its HSPF2 is below average for mini-splits.
You want the newest refrigerant - it uses R-410A, which is being phased down.

Calculate my running cost

Details

Specifications18,000 BTU, R-410A

General
Brand	Lennox
Also sold as	Midea
Outdoor unit model	VPC018H4M-3P
Series	Lennox Real
Type	Mini-split heat pump
Nominal size	18,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	February 13, 2023
Last certified	April 17, 2026
Cooling
SEER2Seasonal efficiency, higher is better	19.2 (range 17.2-19.2)
EER2Efficiency at 95°F outdoors	11.7-12.5
Cooling capacity	18,200 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.9-9.4
Capacity at 47°F	20,000 BTU/h
Capacity at 17°F	14,200-14,300 BTU/h
Capacity at 5°F	12,300 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.30-1.60
ENERGY STAR cold climate	No

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 best matchup 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.
- LENNOX	19.2	12.5	9.4	12,300	212608404
- LENNOX	18.2	12.1	9.1	12,300	212608410
- LENNOX	17.2	11.7	8.9	12,300	212608405

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the Lennox VPC018H4M-3P: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

Midea MDV-V18WMN1T

Yearly running cost in 10 large cities$447-$1,315

Phoenix, AZ$568/yr
Miami, FL$447/yr
Houston, TX$510/yr
Atlanta, GA$538/yr
Los Angeles, CA$529/yr
New York, NY$1,315/yr
Chicago, IL$1,073/yr
Denver, CO$896/yr
Seattle, WA$554/yr
Minneapolis, MN$1,111/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 Lennox VPC018H4M-3P?: The Lennox VPC018H4M-3P is rated at up to 19.2 SEER2 and 12.5 EER2 for cooling and up to 9.4 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 3 certified matchups SEER2 ranges from 17.2-19.2.
Is the Lennox VPC018H4M-3P 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 18,000 BTU model.
How much does the Lennox VPC018H4M-3P cost to run per year?: At its rated efficiency it costs about $447-$1,315 a year in electricity in large U.S. cities, depending on climate and local rates - for example $568 in Phoenix and $1,111 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Lennox VPC018H4M-3P the same as the Midea MDV-V18WMN1T?: 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.
What refrigerant does the Lennox VPC018H4M-3P use?: It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

Running cost and savings

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

Heat pump $572/yrYou save $396/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 Lennox VPC018H4M-3P

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: $572
Current system, per year: $968
You save per year: $396
Payback: 17.7 years
Net after 10 years: -$3,041

Cooling $334Heating $238Electricity used: 3,575 kWhSaved vs. a minimum-efficiency heat pump: $175

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 18,000 BTU models

Mitsubishi Electric SUZ-KA18NAHZ · cold climate19.2 SEER2 · 9.5 HSPF2
Trane / Mitsubishi Electric NTXSKH18A112AA · cold climate19.2 SEER2 · 9.2 HSPF2
Mainline ML18HP230GEN-O · cold climate19.2 SEER2 · 9.6 HSPF2
AUX AHU18HPV1BO · cold climate19.2 SEER2 · 9.0 HSPF2
Mitsubishi Electric MXZ-2D20NLHZ · cold climate19.3 SEER2 · 10.0 HSPF2
Ameristar M4THM1918A12N · cold climate19.0 SEER2 · 10.0 HSPF2
Comfort-Aire A-VMH18SU-1B19.4 SEER2 · 10.0 HSPF2
Panasonic CU-2E18SBU-5 · cold climate19.0 SEER2 · 9.1 HSPF2

See all 465 18,000 BTU mini-splits, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of April 17, 2026. How we use the data.