What is the SEER2 rating of the Bosch BOVA-36RXB-M15S?

The Bosch BOVA-36RXB-M15S is rated at up to 18.0 SEER2 and 11.8 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 5 certified matchups SEER2 ranges from 15.2-18.0.

Is the Bosch BOVA-36RXB-M15S good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 21,000 BTU/h at 5°F with a COP of 1.88, so it is still 1.9 times as efficient as electric resistance heat at that temperature.

How much does the Bosch BOVA-36RXB-M15S cost to run per year?

At its rated efficiency it costs about $628-$1,763 a year in electricity in large U.S. cities, depending on climate and local rates - for example $786 in Phoenix and $1,482 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Bosch BOVA-36RXB-M15S the same as the Bosch BOVB-36RTB-M15S?

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.

Which indoor units work with the Bosch BOVA-36RXB-M15S?

ENERGY STAR lists 5 certified combinations for this outdoor unit. The highest-rated ones use BIVA-24RCB-M20X, BIVB-24RCB-M20X, BIWA-30RXB-M16X.

2-ton central heat pump · IDS Light-LGWP

Bosch BOVA-36RXB-M15S

Average cooling efficiency and below average heating efficiency for a 2-ton central heat pump, and certified for cold climates.

Ranks #178 of 331 2 ton central heat pumps for cooling efficiency, and costs about $729 a year to run in a mixed climate like Atlanta.

SEER2: 18.0 Cooling efficiency over a season
Average · beats 66%
HSPF2: 8.5 Heating efficiency over a season
Below average · beats 38%
EER2: 11.8 Cooling efficiency on a 95°F day
Average · beats 54%
Heat at 5°F: 21,000 BTU/h73% of its 47°F output
Below average · beats 15%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 21,000 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

You mainly need heat - its HSPF2 is below average for central heat pumps.

Calculate my running cost

Details

Specifications2 ton, R-454B

General
Brand	Bosch
Outdoor unit model	BOVA-36RXB-M15S
Series	IDS Light-LGWP
Type	Central heat pump
Nominal size	2 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	July 16, 2024
Last certified	April 22, 2026
Cooling
SEER2Seasonal efficiency, higher is better	18.0 (range 15.2-18.0)
EER2Efficiency at 95°F outdoors	10.6-11.8
Cooling capacity	24,000-28,600 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.5
Capacity at 47°F	24,000-29,400 BTU/h
Capacity at 17°F	20,600-21,800 BTU/h
Capacity at 5°F	17,500-21,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.80-1.88
ENERGY STAR cold climate	Yes

Heating output as it gets colder73% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with BIVA-24RCB-M20X at the standard test temperatures, in BTU/h:

Certified matchups5 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.
BIVA-24RCB-M20X · cold climate	18.0	11.8	8.5	17,600	215225094
BIVB-24RCB-M20X · cold climate	18.0	11.8	8.5	17,600	217895211
BIWA-30RXB-M16X · cold climate	16.0	11.7	8.5	21,000	216618895
BICA-30RXB-M16X · cold climate	16.0	10.6	8.5	20,000	216618896
BIVA-24RXB-M15X · cold climate	15.2	11.7	8.5	17,500	215225095

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the Bosch BOVA-36RXB-M15S: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

Bosch BOVB-36RTB-M15S

Yearly running cost in 10 large cities$628-$1,763

Phoenix, AZ$786/yr
Miami, FL$628/yr
Houston, TX$705/yr
Atlanta, GA$729/yr
Los Angeles, CA$713/yr
New York, NY$1,763/yr
Chicago, IL$1,435/yr
Denver, CO$1,196/yr
Seattle, WA$737/yr
Minneapolis, MN$1,482/yr

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

Questions6

What is the SEER2 rating of the Bosch BOVA-36RXB-M15S?: The Bosch BOVA-36RXB-M15S is rated at up to 18.0 SEER2 and 11.8 EER2 for cooling and up to 8.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 5 certified matchups SEER2 ranges from 15.2-18.0.
Is the Bosch BOVA-36RXB-M15S good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 21,000 BTU/h at 5°F with a COP of 1.88, so it is still 1.9 times as efficient as electric resistance heat at that temperature.
How much does the Bosch BOVA-36RXB-M15S cost to run per year?: At its rated efficiency it costs about $628-$1,763 a year in electricity in large U.S. cities, depending on climate and local rates - for example $786 in Phoenix and $1,482 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Bosch BOVA-36RXB-M15S the same as the Bosch BOVB-36RTB-M15S?: 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.
Which indoor units work with the Bosch BOVA-36RXB-M15S?: ENERGY STAR lists 5 certified combinations for this outdoor unit. The highest-rated ones use BIVA-24RCB-M20X, BIVB-24RCB-M20X, BIWA-30RXB-M16X.
What refrigerant does the Bosch BOVA-36RXB-M15S 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 $786/yrYou save $452/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 Bosch BOVA-36RXB-M15S

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: $786
Current system, per year: $1,238
You save per year: $452
Payback: 19.9 years
Net after 10 years: -$4,481

Cooling $469Heating $316Electricity used: 4,910 kWhSaved vs. a minimum-efficiency heat pump: $164

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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Luxaire XD536E2D11 · cold climate18.0 SEER2 · 8.5 HSPF2
TCL THH24TEI2NAI0H24 · cold climate18.0 SEER2 · 9.0 HSPF2
Trane 4TWV8X24A118.0 SEER2 · 8.5 HSPF2
Midea MOVC-24HDN10-M16G · cold climate18.0 SEER2 · 9.0 HSPF2
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See all 331 2 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of April 22, 2026. How we use the data.