What is the SEER2 rating of the ZERO ZSOVA-30HDMB-USHH?

The ZERO ZSOVA-30HDMB-USHH is rated at up to 16.8 SEER2 and 11.7 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 ZERO ZSOVA-30HDMB-USHH good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 32,600 BTU/h at 5°F with a COP of 1.96, so it is still 2.0 times as efficient as electric resistance heat at that temperature.

How much does the ZERO ZSOVA-30HDMB-USHH cost to run per year?

At its rated efficiency it costs about $838-$2,166 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,023 in Phoenix and $1,802 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the ZERO ZSOVA-30HDMB-USHH the same as the SLIMAIR SHC30AH224V?

Yes, as far as the certified ratings go. ENERGY STAR lists 4 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 ZERO ZSOVA-30HDMB-USHH?

ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses ZAVA-30HDMB-US.

2.5-ton central heat pump · ZAVA Series

ZERO ZSOVA-30HDMB-USHH

Average cooling efficiency and very good heating efficiency for a 2.5-ton central heat pump, and certified for cold climates.

Ranks #100 of 199 2.5 ton central heat pumps for cooling efficiency, and costs about $913 a year to run in a mixed climate like Atlanta.

SEER2: 16.8 Cooling efficiency over a season
Average · beats 45%
HSPF2: 10.0 Heating efficiency over a season
Very good · beats 84%
EER2: 11.7 Cooling efficiency on a 95°F day
Average · beats 43%
Heat at 5°F: 32,600 BTU/h96% of its 47°F output
Below average · beats 29%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 32,600 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 84% of central heat pumps.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

Nothing stands out - its ratings have no weak spot for its class.

Calculate my running cost

Details

Specifications2.5 ton, R-454B

General
Brand	ZERO
Also sold as	SLIMAIR, Senville, Grandaire
Outdoor unit model	ZSOVA-30HDMB-USHH
Series	ZAVA Series
Type	Central heat pump
Nominal size	2.5 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	February 10, 2025
Last certified	March 13, 2025
Cooling
SEER2Seasonal efficiency, higher is better	16.8 (range 16.8)
EER2Efficiency at 95°F outdoors	11.7
Cooling capacity	30,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	10.0
Capacity at 47°F	34,000 BTU/h
Capacity at 17°F	23,800 BTU/h
Capacity at 5°F	32,600 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.96
ENERGY STAR cold climate	Yes

Heating output as it gets colder96% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with ZAVA-30HDMB-US 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.
ZAVA-30HDMB-US · cold climate	16.8	11.7	10.0	32,600	216980497

Same unit, other model numbers3

These model numbers have exactly the same certified ratings and matchups as the ZERO ZSOVA-30HDMB-USHH: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

SLIMAIR SHC30AH224V
Senville SENDC-30HF-OG
Grandaire W5H9V30AKAAA

Yearly running cost in 10 large cities$838-$2,166

Phoenix, AZ$1,023/yr
Miami, FL$838/yr
Houston, TX$916/yr
Atlanta, GA$913/yr
Los Angeles, CA$886/yr
New York, NY$2,166/yr
Chicago, IL$1,755/yr
Denver, CO$1,457/yr
Seattle, WA$893/yr
Minneapolis, MN$1,802/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 ZERO ZSOVA-30HDMB-USHH?: The ZERO ZSOVA-30HDMB-USHH is rated at up to 16.8 SEER2 and 11.7 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 ZERO ZSOVA-30HDMB-USHH good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 32,600 BTU/h at 5°F with a COP of 1.96, so it is still 2.0 times as efficient as electric resistance heat at that temperature.
How much does the ZERO ZSOVA-30HDMB-USHH cost to run per year?: At its rated efficiency it costs about $838-$2,166 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,023 in Phoenix and $1,802 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the ZERO ZSOVA-30HDMB-USHH the same as the SLIMAIR SHC30AH224V?: Yes, as far as the certified ratings go. ENERGY STAR lists 4 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 ZERO ZSOVA-30HDMB-USHH?: ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses ZAVA-30HDMB-US.
What refrigerant does the ZERO ZSOVA-30HDMB-USHH 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 $1,009/yrYou save $603/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 ZERO ZSOVA-30HDMB-USHH

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: $1,009
Current system, per year: $1,612
You save per year: $603
Payback: 19.1 years
Net after 10 years: -$5,470

Cooling $629Heating $381Electricity used: 6,309 kWhSaved vs. a minimum-efficiency heat pump: $237

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 2.5 ton models

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Panasonic CU-HM30BAHU · cold climate16.8 SEER2 · 10.0 HSPF2
Ducane 7SHP15V30P-**A16.6 SEER2 · 9.2 HSPF2
KERR A-KXP30SA-1 · cold climate16.8 SEER2 · 10.0 HSPF2
MOOVAIR MSHMA30R2AN · cold climate16.3 SEER2 · 9.3 HSPF2
Elios ESHMA30R2AN1 · cold climate16.8 SEER2 · 10.0 HSPF2
Blueridge BMAH3018C · cold climate16.2 SEER2 · 9.7 HSPF2

See all 199 2.5 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of March 13, 2025. How we use the data.