Mini Split Systems in Brentwood: All Major Brands
Mini split installation with no major construction: one refrigerant line, one wall penetration, and a properly sized indoor unit.
Request Service Online
Book through the form, and the callback from Brentwood dispatch arrives shortly.
What's Included
We pick head locations room by room, size each one to its own load, and route the line set down a wall or through a chase so it does not show from the street. A good fit for plaster-wall houses where new duct would mean opening ceilings.
Why Choose Brentwood Air?
Experienced Technicians
Every visit is handled by an experienced HVAC tech
Same-Day Service
Quick response for urgent needs
Upfront Pricing
No hidden fees or surprise charges
System Tested With You
We run the system and walk you through the work
Mini Split Installation in Brentwood for Rooms Without Ducts
Ductless is the answer when a Brentwood house has no good path for duct: a converted garage, a rear guest house, a finished attic, an older home with plaster walls you would rather not open. Brentwood Air plans and installs the heads, the outdoor unit and the line between them.
Systems from Daikin and Mitsubishi are the ones we install. A single head cools one room. A multi-zone system serves several rooms from one outdoor unit, each with its own thermostat.
You can also use ductless beside a ducted system, to handle one room that never kept up.
A first visit also covers the question people forget: where the condensate drains and where the outdoor unit hums. A bedroom wall is a poor place for either, and we choose around that.
Because Brentwood houses range from flat-lot ranch homes to canyon estates, we look at where the outdoor unit can sit before we promise a head count. A sloped lot or a tight side yard changes the line run and the mounting, and we write that into the quote.
If an existing ductless system has stopped working, we will tell you whether a repair or a replacement head makes more sense.
What Sets the Price
There is no fixed price on this page. The quote is written before work starts, once we have seen the rooms and the wall the line has to cross.
| Item | What moves it |
|---|---|
| Number of heads | One per room, or one per zone, each with its own capacity. |
| Outdoor unit | Single or multi-zone, and how much space and sound clearance the spot allows. |
| Line set length | Distance and vertical rise from the outdoor unit to each head. |
| Wall and finish work | Core drilling, line covers and condensate routing. |
| Electrical | Dedicated circuit and disconnect for the outdoor unit. |
| Permit | Mechanical and electrical permit work through LADBS. |
How the Visit and Install Go
We start with a walk through the rooms, then send the written quote.
- Measure each room and choose head capacity.
- Pick the outdoor unit spot with setback and sound in mind.
- Mount heads, run the line set and drain, and seal the wall opening.
- Evacuate, charge, test every head and set up the remote or app control.
Permits, Power and Controls
Brentwood falls under LADBS, which issues the permit for this work. Electric service here is LADWP. New split and heat pump systems use lower-GWP A2L refrigerants such as R-454B or R-32.
Heat pump mini splits also heat the room, so a head can replace a wall heater. Each head runs from its own remote or app control, and we can discuss a Smart Thermostat for the ducted side of the house.
Brentwood Air quotes the heads and outdoor unit by model, so you can compare cooling-only and heat pump versions before you choose.
Gas is not part of a ductless install. If the house also has a gas furnace, natural gas comes from SoCalGas and stays a separate line item.
Book a Room-by-Room Visit
Tell us the rooms and the walls, and we will confirm the layout in person. Call (877) 702-9609 and say which rooms need cooling.
Call (877) 702-9609Ductless Mini Split by city
Open a city-specific page when you want this service tied to local neighborhoods, ZIP coverage, and the housing notes that shape the visit scope.
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Ductless Mini Split in Brentwood
Brentwood splits between flat streets of 1950s ranch homes running their original attic ductwork and canyon estates up Mandeville and Kenter where narrow winding road access decides how equipment arrives and in how many pieces. On the canyon lots the condenser sits on a cut pad below the living space with real vertical rise back to the air handler, while the ranch homes below usually need the supply trunk and return resized before new equipment can reach its rated airflow.
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Ductless Mini Split in Bel Air
Bel Air estates sit behind private gates on steep canyon lots, so equipment is often staged well below the house and walked up, and the condenser ends up benched into the slope a long way from the air handler. Those distances turn line set sizing and refrigerant charge into a calculated part of the design, while screening requirements and estate landscaping usually settle where the outdoor units can sit before anything else is decided.
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Ductless Mini Split in Santa Monica
Santa Monica's beach bungalows and Art Deco apartment buildings were built without ductwork or any mechanical space, so multi zone mini splits with a head in each room and the condenser on a roof or rear pad are the standard retrofit. Lots are tight and neighbors are close, so sound output and setback clearance around the outdoor unit usually decide placement well before line set length does.
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Ductless Mini Split in Westwood
Westwood's 1920s Spanish houses have plaster walls, tile roofs and nowhere to run a duct chase, so a compact ducted air handler in a borrowed closet or concealed ductless heads beats opening soffits through finished ceilings. The condominium and rental buildings answer to association rules on rooftop and balcony equipment, wall penetrations and permitted work hours, and those rules shape the installation more than the load calculation does.
View local serviceRelated Services
AC Installation
New central air for Brentwood homes, sized by a room-by-room load calculation and placed where the condenser stays quiet for you and the neighbors.
Learn More →AC Repair
When a repair call finds a tired system, we fix what is fixable and put repair against replacement on paper, so you decide with the numbers in hand.
Learn More →AC Maintenance
A seasonal visit for a newer system: coils, charge, drains and airflow checked against how it ran on install day, so small drift gets caught early.
Learn More →Pricing and Booking Guides
Central Air Conditioning Cost in Brentwood, Line by Line
Central air in Brentwood mostly runs $6,200 to $11,500 installed. This is how each line on the quote moves that number, and when ductless prices out instead.
Heat PumpsHeat Pump Cost in Brentwood, Priced Next to a New Furnace
A ducted heat pump in a typical Brentwood Westside home runs $8,000 to $14,000. Gas furnace replacement runs $4,500 to $7,500. Get both on one written quote.