What is the SEER2 rating of the Blueridge BMKH18MC?

The Blueridge BMKH18MC is rated at up to 21.0 SEER2 and 12.0 EER2 for cooling and up to 10.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Blueridge BMKH18MC good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 13,600 BTU/h at 5°F with a COP of 2.22, so it is still 2.2 times as efficient as electric resistance heat at that temperature.

How much does the Blueridge BMKH18MC cost to run per year?

At its rated efficiency it costs about $382-$1,114 a year in electricity in large U.S. cities, depending on climate and local rates - for example $484 in Phoenix and $941 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Blueridge BMKH18MC the same as the Comfort-Aire A-VFH18DC-1?

Yes, as far as the certified ratings go. ENERGY STAR lists 7 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 Blueridge BMKH18MC 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 · New Multi-zone ODU

Blueridge BMKH18MC

Below average cooling efficiency and average heating efficiency for a 18,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #325 of 465 18,000 BTU mini-splits for cooling efficiency, and costs about $457 a year to run in a mixed climate like Atlanta.

SEER2: 21.0 Cooling efficiency over a season
Below average · beats 30%
HSPF2: 10.0 Heating efficiency over a season
Average · beats 43%
EER2: 12.0 Cooling efficiency on a 95°F day
Below average · beats 25%
Heat at 5°F: 13,600 BTU/h76% of its 47°F output
Very good · beats 82%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 13,600 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

Specifications18,000 BTU, R-410A

General
Brand	Blueridge
Also sold as	Comfort-Aire, BOREAL, Willis, ACD, WABBAN, COMFORMATIC
Outdoor unit model	BMKH18MC
Series	New Multi-zone ODU
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	November 30, 2022
Last certified	June 13, 2026
Cooling
SEER2Seasonal efficiency, higher is better	21.0 (range 21.0)
EER2Efficiency at 95°F outdoors	12.0
Cooling capacity	17,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	10.0
Capacity at 47°F	18,000 BTU/h
Capacity at 17°F	15,000 BTU/h
Capacity at 5°F	13,600 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.22
ENERGY STAR cold climate	Yes

Heating output as it gets colder76% 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 matchups1 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.
- BLUERIDGE · cold climate	21.0	12.0	10.0	13,600	210534145

Same unit, other model numbers6

These model numbers have exactly the same certified ratings and matchups as the Blueridge BMKH18MC: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

Comfort-Aire A-VFH18DC-1
BOREAL MBRS18HPJ1OE
Willis MZUHW18KCH21S2-O
ACD MPD18KCH21SB-O
WABBAN BBM18HX4O
COMFORMATIC GFMCX18-H2

Yearly running cost in 10 large cities$382-$1,114

Phoenix, AZ$484/yr
Miami, FL$382/yr
Houston, TX$434/yr
Atlanta, GA$457/yr
Los Angeles, CA$449/yr
New York, NY$1,114/yr
Chicago, IL$909/yr
Denver, CO$759/yr
Seattle, WA$469/yr
Minneapolis, MN$941/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 Blueridge BMKH18MC?: The Blueridge BMKH18MC is rated at up to 21.0 SEER2 and 12.0 EER2 for cooling and up to 10.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Blueridge BMKH18MC good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 13,600 BTU/h at 5°F with a COP of 2.22, so it is still 2.2 times as efficient as electric resistance heat at that temperature.
How much does the Blueridge BMKH18MC cost to run per year?: At its rated efficiency it costs about $382-$1,114 a year in electricity in large U.S. cities, depending on climate and local rates - for example $484 in Phoenix and $941 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Blueridge BMKH18MC the same as the Comfort-Aire A-VFH18DC-1?: Yes, as far as the certified ratings go. ENERGY STAR lists 7 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 Blueridge BMKH18MC 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 $487/yrYou save $406/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 Blueridge BMKH18MC

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: $487
Current system, per year: $893
You save per year: $406
Payback: 16.0 years
Net after 10 years: -$2,436

Cooling $285Heating $202Electricity used: 3,041 kWhSaved vs. a minimum-efficiency heat pump: $201

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

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NOVAIR LEA18MZ-2P-25SK-O · cold climate21.0 SEER2 · 10.2 HSPF2
Daikin 2MXT18AVJU · cold climate21.0 SEER2 · 10.0 HSPF2
KANIONco KWSMO-18R410AIHMV · cold climate21.0 SEER2 · 10.2 HSPF2
ECO AC EMH-2O18KBB · cold climate21.0 SEER2 · 10.0 HSPF2
Friedrich FPHSR18A3B · cold climate21.0 SEER2 · 10.0 HSPF2
Airquest DLCMRBH18BAK · cold climate21.0 SEER2 · 10.2 HSPF2

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

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 13, 2026. How we use the data.