The same HVAC problem can have several causes, and guessing before calling for help often leads to extra visits and costs.
Here, we explain what common heating and cooling issues mean, when to call for HVAC repair in Woodland Hills, and what our technicians check during a diagnosis at local homes and businesses.
If the thermostat doesn’t respond or the indoor or outdoor unit is silent, the problem is usually electrical rather than mechanical.
Â
It could be a tripped breaker, a failed capacitor, a malfunctioning contactor, or a safety switch that shuts the system down; the cause should be checked before resetting.
Â
This applies to both AC and heating systems, since both use similar electrical parts to start. A system that won’t start isn’t always a major issue.
Â
Some problems can be fixed during the same visit, while others need a closer look before turning the system back on.
If the system is running and the air is moving, but the house isn’t cooling, something is interrupting the cooling process. This could be low refrigerant from a leak, a dirty condenser coil, or a struggling compressor. For AC-specific diagnosis and repair, see AC repair in Woodland Hills.
If your furnace runs but doesn’t heat the house properly, or doesn’t ignite at all, there could be ignition problems, a dirty flame sensor, or airflow restrictions. This could keep heated air from reaching the rooms. See furnace repair in Woodland Hills for details on this diagnosis.
Â
In both cases, the system is running, so the simple failures are ruled out. However, something after the system turns on isn’t working as it should.
If a room is always warmer or cooler than the rest of the house, or if airflow feels weak at the vents, the issue is often with the ductwork, not the equipment. It could be a clogged filter or a duct leak that lets air escape before it reaches the room.
Â
It could also be a supply run that wasn’t sized correctly for that area. This is a common problem we see, and it’s more of a distribution issue than something a simple repair can fix.
If you hear an unfamiliar sound like clicking, buzzing, grinding, or a buzz that wasn’t there before, mention it when you call. Different sounds can point to different parts of the system.
The same is true for odors: a brief dusty smell when you first run the system for the season is normal, but a constant burning smell or any gas odor should be checked right away.
Short-cycling, which occurs when a system turns on and off repeatedly in short bursts rather than running on a normal cycle, is often caused by a thermostat problem, a refrigerant issue, or an electrical component that fails to turn on and off under load. Be sure to mention this when you call, as it helps narrow down the cause before a technician arrives.
If your thermostat doesn’t match what the system is doing, like calling for cooling that never happens or showing a temperature that doesn’t match the room, it could be a wiring or calibration issue instead of a problem with the AC or furnace. It’s wise to check this early, since replacing equipment won’t fix a thermostat that isn’t reading or communicating correctly.
If you notice your energy use is going up for no apparent reason, your system may be working harder than it should. This can be caused by restricted airflow, a refrigerant problem, or a part worn down to the point of reduced efficiency. This is even if it hasn’t failed.
A few situations are worth calling immediately rather than waiting: a gas smell, sparking or a burning smell from electrical components, a system that’s tripped a breaker repeatedly, or an active carbon monoxide alarm. These aren’t situations to troubleshoot yourself.
Â
Most other situations are worth a diagnostic visit rather than waiting to see if they resolve on their own. Minor issues caught early are generally less expensive to address than the same issue after it’s caused secondary damage to other components.
Deciding between repair and replacement depends on different factors, not just one:
Â
Â
There’s no single formula that works for every system. The right choice relies on your specific equipment and the diagnosis. For more details, see HVAC repair or replacement in Los Angeles. If replacement is the better option, AC installation and heating installation explain what’s involved in that project.
A proper diagnostic visit identifies the real cause rather than just guessing and replacing parts. This includes checking the refrigerant charge and pressure as needed. It also includes testing electrical components under load rather than just inspecting them and making sure of sufficient airflow.
The diagnostic fee is $95 and is credited toward any repair you approve.
Once the cause is identified, you should receive a written quote before repair work starts. This quote should include any additional findings beyond the first symptom, explained separately, rather than bundled in as an assumed yes.
Los Angeles County homeowners and businesses trust us for top-notch HVAC services, and we’re proud to bring that same level of service to Chatsworth, Granada Hills, West Hollywood, Beverly Hills and Glendale. Whether it’s fixing your AC and heating or finding ways to save energy, our dedicated team is ready to provide expert solutions across these communities.
Regular maintenance can’t prevent every failure, but it catches many small issues, such as a weakened capacitor or a coil with buildup. This is before they cause unexpected repair calls. HVAC maintenance and Care Club plans handle this on a schedule, so you don’t have to wait for something to go wrong.
We provide 24/7 emergency phone dispatch for urgent situations, separate from regular office hours. If you’re dealing with a safety concern or a complete system failure, call and describe what’s happening so we can advise on next steps.
Affordable Heating and Air is a woman-owned company under California CSLB license #1081403, founded and run by Donna Kreisler.
Â
We’re BBB-accredited at the company level, and the team includes NATE-certified technicians and EPA Section 608 certification for refrigerant handling.
Â
Our company has a 4.9-star rating from over 1,600 Google reviews. Woodland Hills is in LADWP territory, which matters most if you’re considering replacing your system. See California HVAC rebates for the latest program details.
This usually means something interrupts the cooling process rather than airflow — low refrigerant from a leak, a dirty condenser coil, or a struggling compressor. A diagnostic visit identifies which one it is.
This can point to an ignition problem, a dirty flame sensor, restricted airflow, or, in some cases, a size issue that predates the current problem. Rather than guessing, a proper diagnosis distinguishes between them.
Not always, but it’s worth noting when you call, since different sounds point towards different likely causes. A clicking sound and a grinding sound don’t mean the same thing.
It depends on the system’s age, how often it needs repairs, whether the current problem is a one-time issue or keeps happening, and what future repairs might cost. There is no single rule for every system. Diagnose answers your question.
Yes, for urgent situations such as complete system failure or safety concerns like gas odors or electrical issues, we’re available 24/7 outside of regular office hours.
Yes. A miscalibrated or incorrectly wired thermostat can make it seem as if the AC or furnace has failed when the equipment is actually working properly. This is worth ruling out before assuming the larger system is at fault.
The diagnostic fee is $95 and is credited toward any repair you approve. The total repair cost depends on what’s found. For example, a minor electrical part costs much less than major work on the refrigerant or ignition system.
If your system won’t start, the air isn’t the right temperature, or something just doesn’t sound right, the quickest way to a solution is to describe exactly what you’re experiencing.
Â
Call (818) 722-1332 or book a repair visit online.
Â
Affordable Heating and Air
9601 Cozycroft Ave, Unit 1
Chatsworth, CA 91311
CSLB C-20 #1081403
Â
Related: AC repair in Woodland Hills · Furnace repair in Woodland Hills · Indoor air quality in Woodland Hills · Heat pump services · HVAC maintenance · HVAC repair or replacement in Los Angeles
Affordable Heating and Air has completed 10 jobs in Los Angeles, CA in October 2026.
The 10 customer reviews shown here average 4.6 out of 5.
The most recent job was on October 2, 2026.
Affordable Heating and Air has completed 3,816 jobs in Los Angeles, CA in the last 12 months. The first job there was in November 2024.
We successfully installed a 4-ton Goodman heat pump condenser and air handler, ensuring optimal performance. The existing equipment was removed and hauled away. We connected the air handler to the electrical system and installed a new electrical disconnect box and whip. A secondary drain line and drain pan were added for efficient water management. The furnace platform was rebuilt, and supply and return ducts were replaced. We also installed a Daikin thermostat and safety shut-off switch. All work was completed with extended warranties and a 10-year labor warranty. The permit and HERS test costs were included in the estimate.
I successfully addressed a condensation line issue by clearing a significant blockage. The line was obstructed, causing water to back up and potentially leading to damage. Using specialized tools, I carefully accessed and cleared the line, ensuring proper drainage. The process involved meticulous inspection and cleaning to prevent future issues. Payment was received via Zelle, completing the transaction smoothly.
I completed the installation of a Carrier Performance 3-ton, 15.2 SEER2 heat pump package unit with R454B refrigerant. The installation included a Carrier residential warranty, a regular crane for lifting, and a cap gas line. I used an existing NEST thermostat and existing air ducts, ensuring no replacements were necessary. The job also involved sealing supply registers, obtaining LA County permit, and conducting HERS testing. Labor included standard installation practices. Payment was made with a $1000 deposit upon arrival and the balance upon startup, with a 4% credit card fee.
We completed a comprehensive installation of a Carrier Comfort 3 TON Up To 15.2-18 SEER2 Inverter Heat Pump Condenser using R454B refrigerant. The installation included a condenser pad, disconnect box, electrical power whip, and a drain pan. We also installed a flush line-set and a secondary safety switch. The ductwork was updated with R8 return and supply ducts, and we provided a duct warranty. The client was informed that the condenser location, being too close to an existing window, would not pass code. The project included standard installation labor, but drywall repair costs were not included. Additionally, a change order was issued for the installation of three new R8 supply ducts for a second system.
I tried this company for the first time recently. Jeremy was very friendly and knowledgeable. He kept us posted as to his arrival time as well.
I successfully installed three new R-8 ducts for the secondary system. Each duct was meticulously measured and cut to the precise specifications required for optimal performance. The ducts were then carefully assembled, ensuring all connections were secure and airtight. Insulation was applied to enhance energy efficiency and noise reduction. After installation, I conducted a thorough inspection to confirm that each duct was properly aligned and functioning as intended. The system was tested to ensure it met performance standards, and all work was completed in a timely and professional manner.
During the service, we identified a grounded compressor. After thorough inspection, it was determined that the compressor needed to be replaced. We have contacted Goodman to gather warranty information and next steps. The customer will be informed about the warranty status and potential repair options. We ensured all safety protocols were followed throughout the process.
Upon inspection, I identified a significant issue with the refrigerant line set, which was leaking. This leak posed a risk to the system's efficiency and overall performance. After a thorough evaluation, I determined that repairing the line set was not a viable option due to the extent of the damage. Therefore, I recommended replacing the entire line set to ensure the system operates effectively and efficiently. The replacement was completed, and the system is now functioning optimally.
I highly recommend Javier from Affordable Heating and Air. We had a difficult issue with a new air handler that three other technicians had already looked at without being able to fully diagnose the problem. Javier was the fourth technician to take a look, and he finally got to the root of it.What really stood out was his patience and thoughtful approach. He took the time to carefully work through the system, troubleshoot the issue, and explain what he was finding along the way rather than jumping to conclusions. His persistence and attention to detail made all the difference.After dealing with this issue for quite some time, it was a huge relief to finally have someone figure out what was actually going on. Really appreciate Javier’s professionalism, knowledge, and commitment to getting it right. Highly recommend!
Upon arrival, the ACiQ system was non-operational, with the air-handler blower rattling above 20% operation. The thermostat displayed an EH61 error. After power restoration, the unit briefly started then shut down with a water-level alarm. A test with the CN5 water connection disconnected allowed it to run for five minutes without cooling, displaying EH0E. The T2 sensor measured 8.35 �, and the blower was unbalanced. Refrigerant pressures were 222.5/222.9 psig. Recommend replacing the indoor control board, CN47 T2 sensor harness, and CN5 water-level harness, and addressing the blower issue.
Maintenance in LA
During the maintenance visit, I identified a clog in the condensation line, which was impeding the system's efficiency. I carefully inspected the line and removed the obstruction, ensuring the system could drain properly. This action restored optimal performance and prevented potential water damage. The system is now functioning smoothly, and the risk of future clogs has been significantly reduced.
I was very happy with the service and the installation of my unit
I needed an estimate to add more vents to my central ac, which my technician did, but he also showed me how to clean my exterior ac unit and informed me of a great rebate with no pressure at all, he just wanted to be helpful and make me aware!
Murad was pleasant, knowledgeable, and trustworthy. He took the time to explain our problem and the potential solutions and really gained our trust. We had an excellent experience with Murad.
So helpful, honest and identified the problem right away. Respectful and efficient.
Our tech was very helpful and explained all of the options to us, as well as tried every option that was available to fix the ac unit. He went over all of the financing options with us and answered all of our questions.
I liked my service until the end, when the technician told me I was being ripped off and I discovered that my x king 10 boombox was missing.
excellent work
Thank you Weston for figuring it all out!! Yay! I'm very happy with my service!!
