Maybe you have a room that never feels comfortable. The converted garage gets too hot in the summer. The upstairs bedroom overheats in the afternoon, even though the rest of the house is fine.
The ADU above the garage has no ductwork and can’t connect to the main system. Or your home office needs cooling during work hours, but running the whole house feels wasteful.
Ductless mini-splits are made to solve these problems.
At Affordable Heating and Air, we install both single-zone and multi-zone ductless mini-split systems throughout Los Angeles County from our Chatsworth office. You don’t need ductwork or major construction, and most single-zone jobs are done in a day.
Mini-splits don’t replace every central AC system. They’re the best solution for certain situations where central systems don’t work well or can’t work at all:
Los Angeles has more ADU and garage conversions than most places in the country. These spaces rarely have ductwork, and adding ducts from the main system is expensive, complicated, and often not big enough for the extra space.
A single-zone mini-split provides the converted area with its own heating and cooling without altering the main system.
If a room was added after the house was built, the existing HVAC system is usually too small for it. Running the central system harder just overcools the rest of the house while the new room stays warm. A dedicated mini-split zone fixes this problem.
In the San Fernando Valley, second-story bedrooms with west-facing windows get hot in the afternoon, and the central system often can’t keep up. A mini-split in the bedroom gives you quiet, independent cooling right where you need it, without having to cool the whole house all night.
If you work from home in Chatsworth, Woodland Hills, Granada Hills, or anywhere in the Valley, you need steady comfort during work hours. A mini-split in your office lets you keep that room at the temperature you like without running the whole house all day.
Some older Los Angeles homes, including many in West Hollywood, Santa Monica, and Glendale, were built without central air or have ductwork that can’t handle modern cooling systems. Mini-splits can cool the whole house with a multi-zone setup, without the hassle and cost of adding new ductwork.
Learn which rooms benefit most from zoned cooling in LA homes.
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A mini-split system has a small outdoor condenser and one or more indoor air handlers mounted on the wall. They’re connected by a thin refrigerant line that goes through a three-inch hole in the wall. No ductwork is needed.
Each indoor unit operates independently with its own thermostat or remote control. In a multi-zone configuration, different rooms can be set to different temperatures simultaneously. The system provides both cooling and heating, making it a year-round solution.
Modern inverter-driven mini-splits adjust the compressor speed to match your needs, rather than turning on and off. This variable-speed feature helps mini-splits reach some of the highest SEER2 efficiency ratings. Many systems go over 20 SEER2, which is much higher than California’s 14.3 SEER2 minimum.
Single-zone means one outdoor unit connected to one indoor unit. It’s best for fixing a single problem area, like a hot bedroom, a garage conversion, an ADU, or a home office. Installation takes one day. Typical cost is $3,000 to $5,000, depending on size and efficiency.
Multi-zone means one outdoor unit connected to two or more indoor units. It’s best for homes that need separate climate control in several rooms or want whole-home cooling without ductwork. Installation takes one to two days, depending on how many zones you need. Typical cost is $7,000 to $15,000, based on the number of indoor units and setup.
We size every installation by calculating the needs of each room, not just using a rough estimate. If a mini-split is too big, it turns on and off too often and can cause humidity issues. If it’s too small, it runs continuously and never reaches your set temperature. Getting the size right is what makes the system work well.
Mini-split installation is less invasive than any other HVAC installation. Here is the process:
We come to your home, assess the space, measure the room, check the electrical setup, and determine the best location for the indoor unit. Usually, it’s high on an inside wall where air can move freely.
On installation day, we mount the indoor air handler, set the outdoor condenser on a pad or wall bracket, drill a three-inch hole for the refrigerant line and electrical connections, run and braze the line set, pressure test for leaks, pull a vacuum on the system, charge with refrigerant, and verify the charge with manufacturer-spec superheat and subcooling readings.
We configure the remote control or app, test heating and cooling modes, verify airflow, and walk you through operation. The wall penetration is sealed and trimmed. The line set is covered with a protective raceway on the exterior.
Permits and Title 24 documentation are handled as part of the project where applicable.
Valley homes benefit from mini-splits more than most. The combination of extreme summer heat, older housing stock, and specific room-by-room comfort problems makes ductless systems a practical solution:
Homes in Chatsworth, Woodland Hills, Northridge, Encino, and Granada Hills often see afternoon temperatures over 100°F. A mini-split in your most-used room can help a struggling central system, or you can replace it completely with a multi-zone setup.
Attics in the Valley can reach 150°F or more. Ductwork running through that heat loses a lot of cooling capacity before the air reaches your room. Mini-splits avoid this problem because the indoor unit sends cool air straight into the space.
If your home has attic insulation issues or leaky ducts, putting a mini-split in the room that needs it most often costs less than fixing the ducts and works better, too.
Our Simi Valley branch at (805) 755-4074 installs ductless mini-split systems throughout Ventura County. Simi Valley and Thousand Oaks get the same inland heat as the San Fernando Valley. For coastal areas like Oxnard, Ventura, Port Hueneme, and Camarillo, we use outdoor units with corrosion-resistant coatings or place them to reduce salt-air exposure.
For full Ventura County service details, visit our Ventura County HVAC Services page.
No system is always better than the other. The best choice depends on your home and what you need to fix.
Choose a mini-split if your space has no ductwork, adding ducts isn’t practical or is too expensive, you want to control temperatures in different rooms, you’re cooling just one problem area, converting a garage or building an ADU, or you want to help an existing central system that doesn’t work well in some spots.
Choose central AC if your home already has good ductwork, you want to cool the whole house with one system, you prefer supply registers instead of wall units, or your ducts are the right size and sealed well. For central AC replacement, visit our AC Installation page.
Think about a heat pump mini-split, which heats and cools from the same unit, if you’re replacing both an AC and a furnace, or if the space doesn’t have heat. LADWP offers rebates up to $2,500 per ton for qualifying heat pump installations, including mini-splits. This can save you $2,500 to $5,000 or more on a multi-zone project.
Mini-splits are some of the most energy-efficient cooling systems you can get. Many models go over 20 SEER2, which is much higher than California’s minimum of 14.3 SEER2. They’re efficient because of their variable-speed operation and because they avoid duct losses, which ENERGY STAR says can be 20 to 30 percent in regular duct systems.
LADWP rebates apply to qualifying heat pump mini-split installations. SCE offers smart thermostat enrollment credits. SoCalGas may offer rebates on qualifying equipment. The federal IRA Section 25C tax credit expired December 31, 2025. TECH Clean California and HEEHRA single-family rebates are fully reserved. Verify current availability on our California HVAC Rebates page before scheduling.
Use our SEER Energy Savings Calculator to compare your current system efficiency against a modern mini-split.
Affordable Heating and Air. Locally owned, women-led. Chatsworth headquarters serving LA County. Simi Valley branch serving Ventura County. C-20 licensed (CSLB #1081403). NATE-certified, EPA Section 608 certified. Factory-trained on Mitsubishi Electric, Daikin, Carrier, and other major ductless brands. 4.9 stars from 1,400+ Google reviews. We hold an A+ rating with the Better Business Bureau.
Single-zone installations usually cost $3,000 to $5,000. Multi-zone systems with two to four indoor units range from $7,000 to $15,000, depending on the number of zones, system size, and efficiency. We give you a written estimate after an in-home visit, with no obligation.
Most single-zone installations are done in one day. Multi-zone systems with three or more indoor units might take two days. The process includes mounting the units, installing the line set, making electrical connections, charging the refrigerant, testing the system, and cleaning up.
Yes, with a multi-zone setup. One outdoor unit can handle 2 to 5 indoor units, each with its own temperature control. This works well for homes without ductwork or where adding ducts isn’t practical.
Yes. Inverter-driven mini-splits are built to keep cooling even in very hot weather. They work well in the San Fernando Valley’s 100°F-plus summers and avoid the duct losses that hurt central AC performance in homes with attic ducts.
Heat pump mini-split systems may qualify for LADWP rebates of up to $2,500 per ton. Eligibility depends on system efficiency ratings, equipment type, and current program availability. Verify current rebate status on our California HVAC Rebates page.
Permit requirements vary by jurisdiction and project scope. Many mini-split installations in Los Angeles County require an electrical and/or mechanical permit. Affordable Heating and Air handles permit applications and Title 24 documentation for qualifying installations.
Yes. Our Simi Valley branch at (805) 755-4074 serves Simi Valley, Thousand Oaks, Moorpark, Camarillo, Oxnard, Ventura, and Port Hueneme. We specify corrosion-resistant outdoor units for coastal installations. Visit our Ventura County page →
Whether you have a hot bedroom, a garage conversion, an ADU, a home office, or need ductless cooling for your whole house, we’ll check out your space, recommend the right system, and give you a clear written estimate with no surprises.
Los Angeles County: (818) 722-1332 Ventura County: (805) 755-4074
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Serving Chatsworth, Northridge, Granada Hills, Porter Ranch, West Hills, Van Nuys, Encino, Woodland Hills, Glendale, Burbank, Santa Clarita, West Hollywood, Santa Monica, and all of Los Angeles County. Ventura County service through our Simi Valley branch.
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