In North County San Diego, where the climate is warm and dry most of the year, a functioning air conditioning system is essential. At Pelican Heating and Air, we’ve seen it all—from systems blowing hot air in the middle of summer to strange noises coming from outdoor units. If your AC isn’t performing as it should, you’re not alone. Here are some of the most common air conditioning problems we encounter in homes throughout North County San Diego and how our expert HVAC repair services solve them.
1. AC Blowing Warm Air
Nothing is more frustrating on a hot day than turning on your AC and feeling warm air coming from the vents. This problem is typically caused by a refrigerant leak, a dirty air filter, or a malfunctioning compressor. At Pelican Heating and Air, we begin by checking refrigerant levels and inspecting for leaks. If needed, we recharge the system and repair any leaks to restore proper cooling. In some cases, we may recommend replacing aging compressors to improve long-term performance.
2. Poor Airflow in AC Systems
Weak airflow can result from clogged air filters, blocked ductwork, or failing blower motors. We diagnose airflow issues using professional-grade tools to measure air pressure and inspect duct integrity. Once the cause is pinpointed, we clean or replace filters, remove obstructions, and repair or replace faulty components as needed. We also inspect fan motors and belts to ensure they are functioning properly and not contributing to restricted airflow.
3. Thermostat Malfunctions
If your AC won’t turn on or cycles on and off too frequently, your thermostat might be the culprit. Older or non-programmable thermostats can lose calibration, resulting in inconsistent temperatures. We offer thermostat inspections and often recommend upgrading to a smart thermostat for improved performance and energy efficiency. Consumer Reports offers a helpful smart thermostat buying guide.
4. Strange Noises from AC Units
Hearing grinding, squealing, or rattling sounds from your AC unit? These noises often indicate loose parts, motor issues, or debris in the system. Our technicians carefully inspect moving components, tighten connections, lubricate motors, and remove any foreign objects to keep your system running smoothly and quietly. We also check fan blades and electrical connections that could be causing vibration or intermittent sounds.
5. Frequent Cycling of Your Air Conditioner
When your AC turns on and off too often, it can indicate problems such as a dirty evaporator coil, low refrigerant levels, or an incorrectly sized unit. We conduct a full inspection, clean coils, and ensure the system is properly sized and charged. Frequent cycling can reduce system lifespan and raise energy bills if not corrected. Our team may also evaluate thermostat placement, as poor location can lead to inaccurate temperature readings and unnecessary cycling.
6. Water Leaks Around the Air Conditioning Unit
Water pooling near your AC can be due to a clogged condensate drain line or a broken drain pan. This issue, if left unaddressed, can lead to water damage and mold growth. We clear the drain line and replace any damaged pans or tubing, preventing further leaks and ensuring proper drainage. In some cases, we may recommend installing a float switch to automatically shut off the system if a clog is detected.
7. Unpleasant AC Odors – Indoor Air Quality Concerns in HVAC Systems
Musty or burning smells from your vents can signal mold in the ducts or electrical issues. Our technicians perform detailed inspections, clean ductwork, and replace affected components. We also recommend air quality solutions like UV lights and advanced filtration systems. The American Lung Association shares indoor air quality tips.
How Pelican Heating and Air Solves AC Problems
As a trusted Air Conditioning provider in North County San Diego, Pelican Heating and Air offers:
- Same-Day Repairs: Fast response to restore your comfort quickly
- Certified Technicians: Skilled professionals trained in diagnosing all AC issues
- Upfront Pricing: No surprises—just honest, transparent quotes
- Preventative Maintenance: We help prevent breakdowns before they happen
Our comprehensive repair process includes a full system evaluation, detailed diagnosis, and reliable solutions tailored to your specific problem. We work with all major AC brands and use high-quality replacement parts to ensure long-term performance.
From clogged filters to faulty compressors, every AC problem has a solution. Our technicians bring years of local experience and technical expertise to every job, ensuring your cooling system is ready for North County’s seasonal demands. Whether it’s routine maintenance or emergency repairs, we approach each call with the same commitment to quality and customer satisfaction.
For homeowners in communities like Carlsbad, Encinitas, Oceanside, and Vista, our team offers localized support and understands the unique demands of coastal and inland microclimates. This helps us provide smarter diagnostics and recommend more tailored solutions.
If you’re experiencing any of these common AC issues, don’t let the problem escalate. Addressing them early can prevent system damage, higher utility costs, and uncomfortable living conditions during San Diego’s warmer months.
Pelican Heating and Air is your go-to source for reliable, professional HVAC repair services throughout North County San Diego.
