What is the SEER2 rating of the Lennox MLB030S4M-1P?

The Lennox MLB030S4M-1P is rated at up to 23.0 SEER2 and 12.5 EER2 for cooling and up to 10.6 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 4 certified matchups SEER2 ranges from 20.0-23.0.

Is the Lennox MLB030S4M-1P good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 25,000 BTU/h at 5°F with a COP of 1.80, so it is still 1.8 times as efficient as electric resistance heat at that temperature.

How much does the Lennox MLB030S4M-1P cost to run per year?

At its rated efficiency it costs about $574-$1,642 a year in electricity in large U.S. cities, depending on climate and local rates - for example $722 in Phoenix and $1,383 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Lennox MLB030S4M-1P the same as the MOOVAIR DMA27HOM25230X3?

Yes, as far as the certified ratings go. ENERGY STAR lists 5 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 MLB030S4M-1P 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.

30,000 BTU mini-split heat pump · M series

Lennox MLB030S4M-1P

Average cooling and heating efficiency for a 30,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #38 of 171 30,000 BTU mini-splits for cooling efficiency, and costs about $676 a year to run in a mixed climate like Atlanta.

SEER2: 23.0 Cooling efficiency over a season
Average · beats 62%
HSPF2: 10.6 Heating efficiency over a season
Average · beats 65%
EER2: 12.5 Cooling efficiency on a 95°F day
Average · beats 44%
Heat at 5°F: 25,000 BTU/h89% of its 47°F output
Below average · beats 9%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 25,000 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

You want the newest refrigerant - it uses R-410A, which is being phased down.

Calculate my running cost

Details

Specifications30,000 BTU, R-410A

General
Brand	Lennox
Also sold as	MOOVAIR, ComfortStar, Elios, Breeze33
Outdoor unit model	MLB030S4M-1P
Series	M series
Type	Mini-split heat pump
Nominal size	30,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	December 18, 2019
Last certified	June 29, 2026
Cooling
SEER2Seasonal efficiency, higher is better	23.0 (range 20.0-23.0)
EER2Efficiency at 95°F outdoors	11.7-12.5
Cooling capacity	28,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	9.5-10.6
Capacity at 47°F	28,000 BTU/h
Capacity at 17°F	26,600-27,000 BTU/h
Capacity at 5°F	25,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.80
ENERGY STAR cold climate	Yes

Heating output as it gets colder89% 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 matchups4 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 · cold climate	23.0	12.5	10.6	25,000	207768730
- LENNOX · cold climate	23.0	12.5	10.6	25,000	207768730
- LENNOX · cold climate	21.5	12.1	10.1	25,000	207768732
- LENNOX · cold climate	20.0	11.7	9.5	25,000	207768731

Same unit, other model numbers4

These model numbers have exactly the same certified ratings and matchups as the Lennox MLB030S4M-1P: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

MOOVAIR DMA27HOM25230X3
ComfortStar CVH-27-3SH
Elios DEA27HOM25230X3
Breeze33 BZ33-HYP273Z2-G2-P

Yearly running cost in 10 large cities$574-$1,642

Phoenix, AZ$722/yr
Miami, FL$574/yr
Houston, TX$648/yr
Atlanta, GA$676/yr
Los Angeles, CA$663/yr
New York, NY$1,642/yr
Chicago, IL$1,338/yr
Denver, CO$1,116/yr
Seattle, WA$689/yr
Minneapolis, MN$1,383/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 MLB030S4M-1P?: The Lennox MLB030S4M-1P is rated at up to 23.0 SEER2 and 12.5 EER2 for cooling and up to 10.6 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 4 certified matchups SEER2 ranges from 20.0-23.0.
Is the Lennox MLB030S4M-1P good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 25,000 BTU/h at 5°F with a COP of 1.80, so it is still 1.8 times as efficient as electric resistance heat at that temperature.
How much does the Lennox MLB030S4M-1P cost to run per year?: At its rated efficiency it costs about $574-$1,642 a year in electricity in large U.S. cities, depending on climate and local rates - for example $722 in Phoenix and $1,383 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Lennox MLB030S4M-1P the same as the MOOVAIR DMA27HOM25230X3?: Yes, as far as the certified ratings go. ENERGY STAR lists 5 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 MLB030S4M-1P 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 $724/yrYou save $719/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 MLB030S4M-1P

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: $724
Current system, per year: $1,444
You save per year: $719
Payback: 14.6 years
Net after 10 years: -$3,306

Cooling $429Heating $296Electricity used: 4,527 kWhSaved vs. a minimum-efficiency heat pump: $383

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 30,000 BTU models

Kepler ODUM3OK-27HFN1-M · cold climate23.0 SEER2 · 10.6 HSPF2
MDV M3OI-28HFN1-M · cold climate23.0 SEER2 · 10.6 HSPF2
EMI MHMZ327DA · cold climate23.0 SEER2 · 10.6 HSPF2
Bosch BMS500-AAM027-1CSXHD · cold climate23.0 SEER2 · 10.5 HSPF2
DIRECT AIR DIRM-28HXPRO28-3Z · cold climate23.0 SEER2 · 10.6 HSPF2
Comfort-Aire A-VHP284A-1 · cold climate23.0 SEER2 · 10.5 HSPF2
Cooper&Hunter CH-HPR28M-230VO · cold climate23.0 SEER2 · 10.6 HSPF2
MDV M4OD31-27HFN10-M1X-D · cold climate23.0 SEER2 · 10.5 HSPF2

See all 171 30,000 BTU mini-splits, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 29, 2026. How we use the data.