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Ductless Mini-Split Installation & Repair in the San Fernando Valley
A ductless mini-split heats and cools a room without any ductwork. Valley HVAC Network connects homeowners with independent, licensed local HVAC contractors who install and repair mini-splits across the San Fernando Valley, from Toluca Lake and Studio City to Granada Hills and Chatsworth.
How a Mini-Split Works
A mini-split is a type of heat pump. An outdoor unit connects to one or more indoor units, usually mounted high on a wall, through a small bundle of refrigerant lines, wiring and a drain line that passes through a hole about 3 inches wide. Each indoor unit has its own settings, so every room or zone can be a different temperature.
When a Mini-Split Makes Sense
- Homes without ducts: many older Valley homes were built with a wall or floor furnace and no ductwork for central air.
- Garage conversions, ADUs and room additions: it’s often easier to add a mini-split than to extend your existing ducts.
- Rooms that never get comfortable: a hot upstairs bedroom or a sunny back room can get its own unit.
- Replacing window or wall AC units: mini-splits are much quieter and usually far more efficient.
- Heating too: most mini-splits both heat and cool, so one system can handle the whole year in our climate.
Common Mini-Split Problems We Connect Homeowners With Help For
- Water dripping from the indoor unit — usually a clogged or poorly sloped drain line
- Not cooling or heating well — dirty filters, a dirty indoor coil, low refrigerant from a leak, or the wrong mode on the remote
- Blinking lights or an error code — the unit has detected a fault; write down the pattern or code for the technician
- Musty or “dirty sock” smell — often mold or buildup on the indoor coil and blower wheel, which needs a professional cleaning
- Outdoor unit not running — can be a breaker, a wiring or board problem, or a failed part
Quick Checks Before You Call
- Remote: check the batteries and make sure it’s set to Cool or Heat, not Fan or Dry.
- Filters: lift the front panel of the indoor unit and rinse the mesh filters if they’re dusty. Many manufacturers suggest checking them monthly.
- Breaker: check your panel and the outdoor disconnect. If a breaker trips again, stop and call a pro.
- Outdoor unit: keep plants and debris clear so it can move air.
Installing a Mini-Split
Before you sign, make sure the contractor:
- Sizes each indoor unit for the room it serves instead of guessing
- Plans where the indoor units, outdoor unit, line set and drain will go, and how the line cover will look on the outside wall
- Confirms your electrical panel can handle the new system
- Pulls the required permit (LADBS in the City of Los Angeles, or your own city or county building department elsewhere)
- Explains the efficiency rating, the warranties and any rebates you may qualify for
What Affects the Cost
- How many indoor units (zones) you need
- The length of the line set and how hard the route is
- Wall, ceiling or floor-mounted indoor units
- Electrical work and permits
A licensed contractor should give you a written quote with a clear price before starting work.
Common Questions
Can one outdoor unit serve several rooms?
Yes. A multi-zone system connects several indoor units to one outdoor unit. A contractor can tell you whether a single multi-zone system or separate systems make more sense for your home.
Are mini-splits noisy?
Indoor units are generally very quiet, and the compressor sits outside, so they’re usually much quieter than window or wall units.
Do I need a separate unit in every room?
Not always. Open living areas can often share one unit, while closed-off bedrooms usually need their own.
How much does a mini-split cost?
A single-zone system for one room costs far less than a multi-zone system for the whole house. The number of indoor units, the length of line runs and electrical work all affect price. Ask for a written quote and whether any rebates apply.
What Happens When You Call
- Tell us what you need, whether it’s a repair or a new system, and where you’re located
- We connect you with an independent, licensed HVAC contractor who services your neighborhood
- They diagnose, repair or quote the job directly with you
Related articles
- No Central Heat? Ways to Heat an Older Valley Home
- Heating and Cooling an ADU or Garage Conversion in the Valley
- Heat Pump vs. Gas Furnace in the San Fernando Valley
- How Your AC Works (and Why It Stops Cooling)
Valley HVAC Network is a referral service, not an HVAC contractor. Learn more about how this works →
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Arleta • Bell Canyon • Burbank • Calabasas • Canoga Park • Chatsworth • Encino • Granada Hills • Hidden Hills • Lake Balboa • Lake View Terrace • Mission Hills • North Hills • North Hollywood • Northridge • Pacoima • Panorama City • Porter Ranch • Reseda • San Fernando • Shadow Hills • Sherman Oaks • Studio City • Sun Valley • Sunland-Tujunga • Sylmar • Tarzana • Toluca Lake • Valley Glen • Valley Village • Van Nuys • West Hills • Winnetka • Woodland Hills • (and the greater San Fernando Valley)
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