What is the SEER2 rating of the PerfectAire 3PAMS48-HH-MZO5?

The PerfectAire 3PAMS48-HH-MZO5 is rated at up to 21.2 SEER2 and 11.0 EER2 for cooling and up to 10.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 4 certified matchups SEER2 ranges from 20.9-21.2.

Is the PerfectAire 3PAMS48-HH-MZO5 good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 45,000 BTU/h at 5°F with a COP of 2.00, so it is still 2.0 times as efficient as electric resistance heat at that temperature.

How much does the PerfectAire 3PAMS48-HH-MZO5 cost to run per year?

At its rated efficiency it costs about $1,067-$3,047 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,342 in Phoenix and $2,567 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the PerfectAire 3PAMS48-HH-MZO5 the same as the LBG Products LMUHB48DO?

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 PerfectAire 3PAMS48-HH-MZO5 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.

48,000 BTU mini-split heat pump · 3PAMS

PerfectAire 3PAMS48-HH-MZO5

Below average cooling efficiency and average heating efficiency for a 48,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #65 of 146 48,000 BTU mini-splits for cooling efficiency, and costs about $1,256 a year to run in a mixed climate like Atlanta.

SEER2: 21.2 Cooling efficiency over a season
Below average · beats 35%
HSPF2: 10.0 Heating efficiency over a season
Average · beats 43%
EER2: 11.0 Cooling efficiency on a 95°F day
Below average · beats 9%
Heat at 5°F: 45,000 BTU/h92% of its 47°F output
Average · beats 48%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 45,000 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

Cooling cost matters most - its SEER2 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

Specifications48,000 BTU, R-410A

General
Brand	PerfectAire
Also sold as	LBG Products
Outdoor unit model	3PAMS48-HH-MZO5
Series	3PAMS
Type	Mini-split heat pump
Nominal size	48,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	June 3, 2020
Last certified	June 29, 2026
Cooling
SEER2Seasonal efficiency, higher is better	21.2 (range 20.9-21.2)
EER2Efficiency at 95°F outdoors	11.0-11.7
Cooling capacity	47,000-48,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	9.0-10.0
Capacity at 47°F	49,000 BTU/h
Capacity at 17°F	36,000-39,000 BTU/h
Capacity at 5°F	42,500-45,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.00
ENERGY STAR cold climate	Yes

Heating output as it gets colder92% 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.
- PERFECTAIRE · cold climate	21.2	11.0	10.0	45,000	207657344
- PERFECTAIRE · cold climate	21.2	11.0	10.0	45,000	207657344
- PERFECTAIRE · cold climate	21.1	11.4	9.4	43,500	207657346
- PERFECTAIRE · cold climate	20.9	11.7	9.0	42,500	207657345

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the PerfectAire 3PAMS48-HH-MZO5: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

LBG Products LMUHB48DO

Yearly running cost in 10 large cities$1,067-$3,047

Phoenix, AZ$1,342/yr
Miami, FL$1,067/yr
Houston, TX$1,204/yr
Atlanta, GA$1,256/yr
Los Angeles, CA$1,230/yr
New York, NY$3,047/yr
Chicago, IL$2,483/yr
Denver, CO$2,071/yr
Seattle, WA$1,278/yr
Minneapolis, MN$2,567/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 PerfectAire 3PAMS48-HH-MZO5?: The PerfectAire 3PAMS48-HH-MZO5 is rated at up to 21.2 SEER2 and 11.0 EER2 for cooling and up to 10.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 4 certified matchups SEER2 ranges from 20.9-21.2.
Is the PerfectAire 3PAMS48-HH-MZO5 good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 45,000 BTU/h at 5°F with a COP of 2.00, so it is still 2.0 times as efficient as electric resistance heat at that temperature.
How much does the PerfectAire 3PAMS48-HH-MZO5 cost to run per year?: At its rated efficiency it costs about $1,067-$3,047 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,342 in Phoenix and $2,567 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the PerfectAire 3PAMS48-HH-MZO5 the same as the LBG Products LMUHB48DO?: 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 PerfectAire 3PAMS48-HH-MZO5 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 $1,346/yrYou save $1,146/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 PerfectAire 3PAMS48-HH-MZO5

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: $1,346
Current system, per year: $2,491
You save per year: $1,146
Payback: 15.7 years
Net after 10 years: -$6,544

Cooling $797Heating $549Electricity used: 8,411 kWhSaved vs. a minimum-efficiency heat pump: $567

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 48,000 BTU models

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Arcoaire DLCMRBH48EAK21.1 SEER2 · 9.5 HSPF2
Airquest DLCMHBH48EAK · cold climate21.2 SEER2 · 10.0 HSPF2
Blueridge BMM48C21.1 SEER2 · 9.5 HSPF2
ZERO Z4SOV-48HDMB-USHH · cold climate21.2 SEER2 · 11.0 HSPF2
ECO AC EMH-*O48KBB · cold climate21.0 SEER2 · 10.0 HSPF2
Samsung AM048FCMDCG · cold climate21.3 SEER2 · 10.5 HSPF2
TOSOT TM48D6MO · cold climate21.0 SEER2 · 10.0 HSPF2

See all 146 48,000 BTU mini-splits, ranked

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