Is a mini split worth it in Los Angeles?
Short answer: Yes, for most Los Angeles homes. The weather is mild on both ends: LAX designs for 81.3°F in summer and 45.0°F in winter, and the coldest night of the last ten winters was 39°F. A mini split covers light cooling and light heating there, about 1,530 cooling hours and 1,070 heating hours a year (ENERGY STAR), and the inverter spends most of that time at low speed. California power costs 29.8¢ per kWh, so the efficiency of DIY 5th Gen saves more here than in most places. Size each room with the standard chart and go one size up for west-facing or top-floor rooms.
Los Angeles compared with the rest of California
Los Angeles sits between the cool Bay Area and the hot desert. It needs less heat than San Francisco and much less cooling than Palm Springs.
| City (climate zone) | Summer high | Winter low | Coldest, last 10 winters | Cooling hours | Heating hours |
|---|---|---|---|---|---|
| Los Angeles (3B) | 81.3°F | 45°F | 39°F | 1,530 | 1,070 |
| San Diego (3B) | 81.6°F | 45.3°F | 38°F | 1,347 | 1,467 |
| San Francisco (3C) | 78.1°F | 40.3°F | 35°F | 224 | 2,948 |
| Sacramento (3B) | 97.5°F | 30.8°F | 25°F | 871 | 2,016 |
| Palm Springs (3B) | 109.7°F | 41.2°F | 35°F | 2,092 | 630 |
Design temperatures: ASHRAE 2021 (1% cooling, 99.6% heating dry bulb). Climate zones: 2021 IECC by county (PNNL guide). Coldest: NOAA station records, December 2016 to February 2026. Hours: ENERGY STAR heat pump savings calculator (full-load hours).
Cooling on Los Angeles summer days
Los Angeles logs about 1,530 full-load cooling hours a year. The inverter slows down instead of switching off, so it holds the temperature through the afternoon with less power.
Heating on Los Angeles winter nights
Yes, with room to spare. The coldest night at LAX in the last ten winters was 39°F, far above the −12°F and −13°F the MRCOOL DIY series heat down to.
What size for a Los Angeles room
Measure each room (length × width) and match it to an indoor unit.
| Room size | Indoor unit | Single zone voltage |
|---|---|---|
| Up to 250 sq ft | 6K BTU (multi-zone only) | – |
| 251–400 sq ft | 9K BTU | 115V |
| 401–550 sq ft | 12K BTU | 115V |
| 551–800 sq ft | 18K BTU | 230V |
| 801–1,050 sq ft | 24K BTU | 230V |
| 1,051–1,550 sq ft | 36K BTU | 230V |
Go one size up for rooms with west or south windows, a top floor under the roof, high ceilings, poor insulation, or a kitchen. A garage that isn’t insulated also goes one size up. Full sizing guide
Several rooms? See multi-zone systems
What it costs to run in Los Angeles
Yearly cost to heat and cool one room with Los Angeles weather, at the California average power price.
| Size | DIY Select | DIY EasyPro | DIY 5th Gen |
|---|---|---|---|
| 9K | $560 | $549 | $450 |
| 12K | $737 | $691 | $607 |
| 18K | $1,121 | $1,061 | $862 |
| 24K | $1,517 | $1,493 | $1,285 |
| 36K | – | – | $2,259 |
Estimate, not a quote: (cooling BTU × 1,530 cooling hours ÷ SEER2 + heating BTU × 1,070 heating hours ÷ HSPF2) ÷ 1,000 × 29.75¢. Hours: ENERGY STAR heat pump savings calculator (Los Angeles). HSPF2 is the standard rating (Region IV) shown on the product pages. Power price: California average, EIA, August 2026; LADWP, Southern California Edison and the city utilities each set their own rate.
What the equipment costs
Prices for complete single zone systems: outdoor unit, indoor unit, pre-charged line set and remote. Shipping is free to Los Angeles.
| Size | DIY Select | DIY EasyPro | DIY 5th Gen |
|---|---|---|---|
| 9K | $1,249 | $1,487 | $2,329 |
| 12K | $1,399 | $1,599 | $2,359 |
| 18K | $1,690 | $1,806 | $2,909 |
| 24K | $1,899 | $2,109 | $3,329 |
| 36K | – | – | $3,769 |
Rebates in Los Angeles
MRCOOL’s rebate data lists 4 utilities in Los Angeles with rebates on our DIY models. 1 of them needs a participating contractor, so a DIY install usually doesn’t qualify there; for the others, confirm with your utility. The federal 25C tax credit ended for systems installed after December 31, 2025.
| Utility | Up to | Who installs | Series |
|---|---|---|---|
| Los Angeles Department of Water and Power (LADWP) | $9,791 | No contractor rule listed, confirm with your utility | DIY 5th Gen |
| City of Glendale | $3,916 | No contractor rule listed, confirm with your utility | DIY 5th Gen, DIY EasyPro |
| City of Burbank Water and Power | $2,500 | Needs a participating contractor | DIY 5th Gen, DIY EasyPro, DIY Select |
| Pasadena Water & Power | $665 | No contractor rule listed, confirm with your utility | DIY 5th Gen, DIY EasyPro, DIY Select |
Rebates checked November 2026. Amounts change; confirm with your utility.
DIY or a pro
MRCOOL DIY systems are built for a homeowner install: the line set comes pre-charged and connects by hand, so there’s no vacuum pump or refrigerant work. Most people hire an electrician for the new circuit, and permit rules depend on your city. Can you install a mini split yourself?
Which MRCOOL system for Los Angeles
Mini split questions for Los Angeles
Is a mini split worth it in Los Angeles?
For most homes, yes. It covers light cooling and light heating on little power, and with power at 29.8¢ per kWh, a more efficient system saves more each year.
Will it keep up in a Los Angeles summer?
DIY EasyPro and DIY 5th Gen are rated by MRCOOL to cool with outdoor temperatures up to 122°F. Los Angeles designs for 81.3°F.
Does it heat in a Los Angeles winter?
Yes. DIY Select heats down to −12°F outside and DIY EasyPro and DIY 5th Gen down to −13°F. Los Angeles’s coldest night in the last ten winters was 39°F.
How much does it cost to run in Los Angeles?
For a 12K room with Los Angeles weather at 29.75¢ per kWh, about $737 a year with DIY Select, $691 with DIY EasyPro and $607 with DIY 5th Gen, heating and cooling together. Estimates, not quotes.
What size do I need for a Los Angeles garage?
Use the same chart: measure length × width. A garage that isn’t insulated goes one size up.
Are there mini split rebates in Los Angeles?
Some utilities list rebates for MRCOOL DIY models; see the table above. Check each program’s rules: some need a participating contractor. The federal 25C tax credit ended for systems installed after December 31, 2025.
Can I install it myself?
Yes. The pre-charged line set connects by hand, with no vacuum pump. Most people hire an electrician for the circuit, and permit rules depend on your city.
How long does shipping to Los Angeles take?
Verified orders ship from Kentucky in 2 to 4 business days, then 3 to 7 by freight. Shipping is free to Los Angeles.