What is the SEER2 rating of the DELLA 048-TLP-MODU-1D4?

The DELLA 048-TLP-MODU-1D4 is rated at up to 20.5 SEER2 and 11.0 EER2 for cooling and up to 10.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the DELLA 048-TLP-MODU-1D4 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 DELLA 048-TLP-MODU-1D4 cost to run per year?

At its rated efficiency it costs about $780-$2,101 a year in electricity in large U.S. cities, depending on climate and local rates - for example $963 in Phoenix and $1,757 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the DELLA 048-TLP-MODU-1D4 the same as the COSTWAY FP11135US?

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.

36,000 BTU mini-split heat pump · MODU

DELLA 048-TLP-MODU-1D4

Below average cooling efficiency and average heating efficiency for a 36,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #135 of 205 36,000 BTU mini-splits for cooling efficiency, and costs about $877 a year to run in a mixed climate like Atlanta.

SEER2: 20.5 Cooling efficiency over a season
Below average · beats 24%
HSPF2: 10.5 Heating efficiency over a season
Average · beats 61%
EER2: 11.0 Cooling efficiency on a 95°F day
Below average · beats 9%
Heat at 5°F: 25,000 BTU/h71% 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…

Cooling cost matters most - its SEER2 is below average for mini-splits.

Calculate my running cost

Details

Specifications36,000 BTU, R-454B

General
Brand	DELLA
Also sold as	COSTWAY
Outdoor unit model	048-TLP-MODU-1D4
Series	MODU
Type	Mini-split heat pump
Nominal size	36,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	July 2, 2025
Last certified	June 25, 2026
Cooling
SEER2Seasonal efficiency, higher is better	20.5 (range 20.5)
EER2Efficiency at 95°F outdoors	11.0
Cooling capacity	34,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	10.5
Capacity at 47°F	35,000 BTU/h
Capacity at 17°F	30,000 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 colder71% 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.
- · cold climate	20.5	11.0	10.5	25,000	217568633

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the DELLA 048-TLP-MODU-1D4: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

COSTWAY FP11135US

Yearly running cost in 10 large cities$780-$2,101

Phoenix, AZ$963/yr
Miami, FL$780/yr
Houston, TX$864/yr
Atlanta, GA$877/yr
Los Angeles, CA$855/yr
New York, NY$2,101/yr
Chicago, IL$1,707/yr
Denver, CO$1,420/yr
Seattle, WA$873/yr
Minneapolis, MN$1,757/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 DELLA 048-TLP-MODU-1D4?: The DELLA 048-TLP-MODU-1D4 is rated at up to 20.5 SEER2 and 11.0 EER2 for cooling and up to 10.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the DELLA 048-TLP-MODU-1D4 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 DELLA 048-TLP-MODU-1D4 cost to run per year?: At its rated efficiency it costs about $780-$2,101 a year in electricity in large U.S. cities, depending on climate and local rates - for example $963 in Phoenix and $1,757 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the DELLA 048-TLP-MODU-1D4 the same as the COSTWAY FP11135US?: 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 DELLA 048-TLP-MODU-1D4 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 $957/yrYou save $812/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 DELLA 048-TLP-MODU-1D4

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: $957
Current system, per year: $1,769
You save per year: $812
Payback: 16.0 years
Net after 10 years: -$4,877

Cooling $584Heating $373Electricity used: 5,982 kWhSaved vs. a minimum-efficiency heat pump: $402

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 36,000 BTU models

York YPAS36BLFASDQ1 · cold climate20.5 SEER2 · 11.8 HSPF2
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Hitachi PAS-36BLFASDQ1 · cold climate20.5 SEER2 · 11.8 HSPF2
Fujitsu AOU36RLXFZH · cold climate20.5 SEER2 · 9.5 HSPF2
TOSOT TWH36R32DO · cold climate21.0 SEER2 · 8.5 HSPF2
KEEN Home KEENUMHP36AA · cold climate20.0 SEER2 · 10.8 HSPF2
TOSOT TWH36CD32AO · cold climate21.0 SEER2 · 8.5 HSPF2
Arcoaire D5CLRAH36AAK · cold climate20.0 SEER2 · 10.4 HSPF2

See all 205 36,000 BTU mini-splits, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 25, 2026. How we use the data.