Los Angeles County puts HVAC units to the test. In the San Fernando Valley, the cooling season lasts six to eight months. Heat waves often bring days over 100°F. Wildfire smoke quickly fills ductwork with fine particles, much faster than regular dust.
With LA’s constant smog, Santa Ana winds, and older homes, a familiar pattern emerges: homeowners skip maintenance, problems build up quietly, and the compressor fails on the first 105°F day in July, right when every HVAC company in the Valley is already booked for the week.
The way to break that cycle is simple: professional maintenance, twice a year.
Affordable Heating and Air has offered preventive HVAC maintenance and tune-ups throughout Los Angeles County from our Chatsworth headquarters, with over 20 years of combined HVAC experience. Our C-20-licensed (CSLB #1081403), NATE-certified technicians service all major residential systems, including gas furnaces, central AC, heat pumps, ductless mini-splits, and dual-fuel systems. With our Care Club maintenance plan, LA County homeowners receive reliable protection, priority scheduling, and peace of mind all year.
Join Care Club → · Call (818) 722-1332 to Schedule
Every visit includes both your heating and cooling systems, not just the easy-to-reach parts. Here’s what our technicians inspect, test, clean, and document:
We clean and inspect the condenser and evaporator coils. We check refrigerant levels and look for leaks (compatible with R-410A and R-454B). We test capacitors and contactors, which are the parts most likely to fail during Valley heat waves.
We flush the condensation drain and treat the pan to prevent water damage. We inspect and lubricate the blower motor. We measure airflow, inspect and replace filters, calibrate smart thermostats, review SCE or LADWP time-of-use rates, and check outdoor unit clearance and straighten coil fins.
We inspect the heat exchanger and perform a combustion analysis on gas furnaces. We conduct a carbon monoxide safety test, clean the ignitor and flame sensor, and verify gas pressure and valve operation. For heat pumps, we test the reversing valve and defrost cycle.
We document everything we find and go over it with you before suggesting any repairs. You’ll see all your options and prices before we do anything beyond the maintenance. No surprises, no upselling, and no pressure.
Southern California’s maintenance calendar is different from the rest of the country. Here is the schedule that works best for LA homes:
This is the most important visit of the year. We check your AC, refrigerant levels, capacitors, and coils before the cooling season starts. Scheduling in spring means any needed parts arrive before the first heat wave, not during it. This is also when it’s easiest to book an appointment, and availability is best.
We check your furnace or heat pump’s heating mode, perform a heat exchanger and combustion analysis, and do carbon monoxide safety testing. Fall is also the best time for duct sealing or insulation work before winter utility bills increase.
If your area experiences heavy wildfire smoke, schedule an inspection afterward, no matter your regular maintenance schedule. We check your duct system for ash and particles, verify filter ratings, and clean coils.
Before fire season, we recommend upgrading to MERV 13 or higher filters. We check compatibility and can install them right away.
Don’t wait for a complete breakdown. Call us if you notice any of these:
Energy bills are going up even though your usage or the weather hasn’t changed. The system takes longer to reach your set temperature. You hear unusual sounds at startup, like rattling, grinding, squealing, or clicking. There are musty, burning, or chemical smells from the vents. Airflow from the registers feels weaker than in past seasons. Your smart thermostat shows longer run times compared to last year. Or, your system is five years or older and has never had a professional tune-up.
Schedule a Tune-Up → Call (818) 722-1332
Heat pumps are now the most common system upgrade in LA County, thanks to LADWP rebates of up to $2,500 per ton and California’s electrification standards. Their maintenance needs are different from traditional gas furnaces and central AC.
Reversing valve: This valve switches the system between heating and cooling. If it starts to fail, performance drops in both modes before the valve stops working completely. We test its operation and measure the temperature difference across the valve at every heat pump visit.
Defrost cycle: Los Angeles winters rarely challenge heat pumps, but during a cold snap, the defrost cycle must work properly, or the outdoor coil will ice over. We test the defrost board and sensor at every heating-season visit.
R-454B refrigerant: Systems made from 2025 onward often use R-454B, a lower-GWP A2L refrigerant that needs special handling and leak detection equipment. Our technicians have current EPA Section 608 certification and are trained to work with both R-410A and R-454B systems.
Learn more about our heat pump services.
We routinely find Nest and Ecobee thermostats in LA County homes configured in ways that drive up utility bills rather than lower them.
The most common mistake is running the system at full cooling during SCE’s 4 to 9 PM peak pricing window, when electricity rates are highest.
The fix is simple: pre-cool your home to 73°F before 4 PM, then let the temperature rise gradually during peak hours. Most homeowners find this approach lowers their summer bills without sacrificing comfort.
On every maintenance visit, we review your thermostat settings: system type configuration, fan mode, schedule timing relative to SCE or LADWP peak hours, and demand-response program enrollment.
We adjust settings with your approval and document the before-and-after configuration.
Care Club is Affordable Heating and Air’s annual maintenance membership. It’s a smart alternative to waiting for emergency repairs. View Care Club Plans.
Two full system inspections per year: one in spring before cooling season, and one in fall before heating season. Both cover everything listed above. We replace standard filters on every visit. Care Club members get priority scheduling and service before non-members during peak demand, usually June through August.
We offer extended warranty coverage on parts and labor, and discounted repair rates between scheduled visits.
Plans are annual, with monthly or upfront payment options. We recommend a plan tier based on your system’s type, age, and service history, rather than a standard rate.
Here’s the reality of summer in the Valley: on a 105°F August day, our schedule fills up within hours. Care Club members get priority. For most households in this climate, that scheduling guarantee alone makes the membership worthwhile.
The difference between waiting for problems and getting regular maintenance adds up quickly:
If we catch a failing capacitor during a spring tune-up, it’s replaced at the standard cost. Without maintenance, it might fail in mid-summer, leading to an emergency call, after-hours pricing, and lost cooling while you wait.
If we find a slow refrigerant leak early, repairs cost $150 to $400. If left undetected, the compressor overworks and eventually fails, which means a $1,200 to $2,800+ replacement. Dirty condenser and evaporator coils can increase cooling energy use by 20 to 30 percent. A maintained system runs at its rated SEER2 efficiency and keeps your utility bills steady.
When it comes to lifespan, systems with no maintenance usually last 12 to 15 years. With regular professional care twice a year, 15 to 20 years or more is common.
Regular maintenance also helps you take advantage of rebates when you need a new system. LADWP currently offers up to $2,500 per ton on qualifying heat pump replacements. A well-maintained system gives you time to plan a replacement when rebate funding is at its best, instead of making a rushed emergency purchase with fewer options.
Our Simi Valley branch at 749 California Ave, Simi Valley, CA 93065 (805) 755-4074 provides the same HVAC maintenance service throughout Ventura County.
Coastal communities like Oxnard, Ventura, Port Hueneme, and Camarillo need more frequent coil cleaning because salt air can corrode outdoor condenser coils. We offer special maintenance for these areas, including annual epoxy coil coating for high-exposure installations. Inland communities such as Moorpark, Thousand Oaks, and Simi Valley follow the same spring and fall schedule as San Fernando Valley homes.
Salt air from coastal areas, such as Santa Monica and Long Beach, wears down HVAC units. We apply anti-corrosion treatments to condenser units and install sacrificial anode rods in water heaters. In turn, this extends your equipment’s lifespan.
LA’s heat waves strain AC systems and increase energy costs. We perform coil cleaning and refrigerant checks to ensure your AC runs efficiently. We also upgrade systems to SEER 18+ units, which exceed California standards for improved performance and savings.
LA’s smog requires frequent filter changes, air purifier installation, and duct cleaning. You can breathe easier with our indoor air quality solutions, even on polluted days.
Mild winters can still cause cold snaps that stress heating systems. We inspect furnaces, check heat exchangers, and calibrate thermostats to keep you warm and safe during cold weather.
Older homes, like a 1928 Craftsman in Pasadena, often have outdated HVAC systems. We replaced asbestos ductwork with sealed flex ducts and installed a zoned mini-split system. Consequently, it led to a 35% reduction in energy use.
Whether you live in a historic Pasadena home or a modern Long Beach condo, we customize our services to fit your property. We ensure full compliance with California’s strict energy and emissions standards.
| Season | Climate Factors in LA County | Direct HVAC Impact | Essential Maintenance Tasks |
|---|---|---|---|
| Summer | High heat, smog, dry air | AC runs longer, filters clog faster, higher energy use, risk of breakdowns |
• Replace or clean air filters every 1–3 months • Clear debris from outdoor unit • Check and clean condensate drain line • Schedule professional AC tune-up • Inspect refrigerant lines for leaks |
| Fall | Mild temperatures, wildfire smoke, debris | System transitions from cooling to heating, air quality issues |
• Change filters (especially after wildfire season) • Clean vents and ducts • Test heating system before cold nights • Remove debris from outdoor units |
| Winter | Mild cold, occasional cold snaps, rain | Heating system use increases, risk of moisture issues |
• Test and calibrate thermostat • Replace or clean furnace filters • Inspect heat pump or furnace • Check ductwork for leaks • Inspect insulation and carbon monoxide detectors |
| Spring | Warming temps, pollen, humidity rises | AC system prepares for heavier use, allergens increase |
• Professional AC inspection • Clean condenser and evaporator coils • Replace air filters • Clear drain lines • Adjust thermostat for cooling |
Expert Tip: Replace HVAC filters every 1–3 months, especially in Los Angeles, due to poor air quality. Wondering, “How often do you replace HVAC filters in LA smog?” For most homes, monthly replacement is ideal. Modern HVAC systems and smart thermostats can even alert you when it’s time to change the filter—learn more in our smart thermostat video guide.
For a detailed explanation of when to schedule air duct cleaning, read our blog on how often to clean air ducts in Los Angeles.
Twice per year — spring and fall. The San Fernando Valley’s extended cooling season, recurring wildfire smoke, and baseline smog levels accelerate component wear and filter saturation faster than most climates in the country. Systems maintained on this bi-annual schedule consistently outperform and outlast those serviced only when something breaks.
Care Club is our annual maintenance membership. It includes two comprehensive system inspections per year (spring and fall), standard filter replacement on each visit, priority scheduling during peak summer demand, extended parts and labor warranty coverage, and discounted repair rates between visits. Plans are annual with a monthly or upfront payment. Contact us for current pricing based on your system type and home.
Yes. Heat pump maintenance specifically includes reversing valve testing, defrost cycle verification, and refrigerant handling for both R-410A and the newer R-454B (the A2L refrigerant used in systems manufactured from 2025 onward). Our technicians hold current EPA Section 608 certification for both refrigerant types.
In two direct ways. First, a maintained system operates at its rated SEER2 efficiency — dirty coils and low refrigerant can add 20 to 30 percent to cooling energy costs. Second, we calibrate smart thermostat settings for SCE and LADWP time-of-use rate schedules on every visit, correcting configurations that drive up costs during peak pricing hours.
Yes — through our Simi Valley branch at (805) 755-4074. We provide bi-annual Care Club service and one-time tune-ups across Ventura County, with additional coastal corrosion protocols for homes in Oxnard, Ventura, Camarillo, and Port Hueneme.
Los Angeles County: (818) 722-1332
Ventura County: (805) 755-4074
Join Care Club → · Book a One-Time Tune-Up
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.
Also serving Simi Valley, Moorpark, Thousand Oaks, Oxnard, Ventura, Camarillo, and all of Ventura County through our Simi Valley branch.
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