AC Repair & Installation in West Hills, CA
AC not cooling when the Valley heat peaks? Cooling By Design repairs air conditioners fast and installs high-efficiency replacements for West Hills homes, apartments and small businesses. Same-day service available.
- Licensed & Insured
- Same-Day Service
- 24-Hour Emergency Service
- Financing Available
Who Fixes and Installs Air Conditioners in West Hills?
Cooling By Design, a licensed HVAC contractor (CSLB #1148982) based in neighboring Canoga Park, repairs and installs air conditioners throughout West Hills, CA 91304 and 91307. From established single-family homes on larger lots to ranch-style properties near the foothills, we diagnose the problem on the first visit, give you a written quote before any work begins, and offer same-day service when the schedule allows. If your system is more than 12 years old or keeps failing, we will show you replacement options sized for your home, backed by our 10-Year Cooling Comfort Plan. See all West Hills HVAC services.
AC Repair in West Hills: Problems We Fix
AC blowing warm air
Usually a failed capacitor, dirty condenser coil or low refrigerant. A worn capacitor is one of the most common failures after a long Valley summer.
AC will not turn on
Tripped breakers, a bad contactor, a thermostat fault or a float switch shutting the system off after a clogged drain line.
Frozen evaporator coil
Ice on the indoor unit points to restricted airflow or low refrigerant. Keep running it and you risk compressor damage.
Short cycling
An AC that starts and stops every few minutes wastes energy and wears parts. Causes range from dirty sensors to an oversized system.
Weak airflow or hot rooms
Clogged filters, failing blower motors and leaking or crushed ducts leave some rooms uncomfortable even when the AC runs all day.
Noises, leaks and odors
Banging, squealing, water around the indoor unit or musty smells are early warnings. Fixing them early is cheaper than a mid-heat-wave breakdown.
How an AC Repair Visit Works
Call or book online
Reach us at (877) 702-6654 or schedule online. Same-day slots are available when the schedule allows.
Diagnose
Your technician tests the system and explains what failed and why, in plain language.
Approve a written quote
You see the price before any work starts. No pressure to add anything you do not need.
Repair, test, explain
We fix it, confirm cooling performance and show you how to prevent the problem from returning.
AC Installation and Replacement in West Hills
A new air conditioner is only as good as its sizing and installation. We start with a load calculation for your home rather than a square-foot guess, because an oversized unit short cycles and leaves humidity behind, while an undersized one never catches up on a 100-degree afternoon. A complete installation covers equipment selection, ductwork inspection, permitting, refrigerant line work, startup testing and a walkthrough of your new system.
Signs it is time to replace
The system is 12 or more years old, uses older R-22 refrigerant, needs repeat repairs, or your summer bills keep climbing even after a tune-up.
Choose your comfort level
Explore our Silver, Gold and Platinum series, from dependable single-stage systems to variable-speed models that keep rooms evenly comfortable and bills lower.
Permits and code handled
Replacing a system in the City of Los Angeles generally involves a permit and California energy-code requirements, including duct testing in many homes. We take care of the paperwork.
Pair it with better air
Add the AccuClean whole-home filtration or a smarter thermostat during installation for cleaner air and easier control.
Install a New AC Once. Relax for 10 Years.
Every new system installed by Cooling By Design comes with our 10-Year Cooling Comfort Plan: a 10-year parts warranty, 10-year labor coverage, professional maintenance before every summer and winter (20 seasonal tune-ups) and flexible payments.
What Drives AC Repair and Installation Cost in West Hills
| Factor | How it affects a repair | How it affects installation |
|---|---|---|
| Part or system size | A capacitor or contactor costs far less than a compressor or coil | Tonnage must match your home's load, and larger systems cost more |
| Efficiency level | Not a factor | Higher SEER2 and variable-speed models cost more up front and less to run |
| Refrigerant type | Older R-22 is scarce and expensive to top up | Modern systems use current refrigerants and cost less to service |
| Ductwork condition | Leaks and crushed ducts can mimic an AC failure | Repairing or replacing ducts adds scope but fixes comfort and bills |
| Access | Attic or rooftop units take longer to reach | Crane or tight-attic access affects labor time |
| Permits and code | Rarely required | Permit, inspection and duct testing are part of most replacements |
Trusted for Fast, Honest AC Service
AC Repair and Installation FAQs for West Hills
Why is my AC blowing warm air?
The most common causes are a failed capacitor, a dirty outdoor coil, low refrigerant or a frozen evaporator coil. Turn the system off for an hour if you see ice, check that your filter is clean, and call a technician if cooling does not return.
How long does AC installation take?
A straightforward like-for-like replacement typically takes about one day. Projects that include new ductwork, a new electrical line or a relocated indoor unit take longer, and we confirm the timeline in your written quote.
What size air conditioner does my West Hills home need?
Size is based on a load calculation that accounts for insulation, windows, sun exposure, ductwork and occupancy, not just square footage. An oversized unit short cycles and removes less humidity, and an undersized one struggles during heat waves.
Do I need a permit to replace my AC in Los Angeles?
In the City of Los Angeles, replacing an air conditioner generally requires a permit and compliance with California’s energy code, which often includes duct testing. Cooling By Design handles the permitting and inspection for you.
Is it worth repairing an AC that uses R-22 refrigerant?
Usually not. R-22 production ended in 2020, so recharging an older system is costly and the unit is likely near the end of its life. We will compare the repair cost against a new, more efficient system so you can decide.
How can I lower my AC bill during a Valley heat wave?
Keep the filter clean, close blinds on sun-facing windows, set the thermostat at a steady comfortable temperature rather than swinging it, and have leaky ducts sealed. A seasonal tune-up also helps the system run at its rated efficiency.
Do you offer financing for a new air conditioner?
Yes. Financing is available so you can replace a failing system now and spread the cost over time. See our financing options or ask your technician for details.
Get Cool Again in West Hills
Request a quote or call (877) 702-6654 for same-day AC repair. Need heating instead? See our heating repair and installation in West Hills.
Get Your Free HVAC Quote
Tell us what you need and a Cooling By Design team member will reach out shortly. Need help right now? Call (877) 702-6654.