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Common Cooling and Heating Problems – Expert Troubleshooting Guides

When your HVAC system isn’t working properly, quick answers matter. GoTech Air Conditioning and Heating created this resource center to help Orange County homeowners identify common cooling and heating problems, understand what causes them, and know when professional repair is needed.

Most Common Air Conditioning Problems

AC Fan Running Constantly

Learn why your AC fan won’t turn off and how to fix thermostat settings, stuck relays, and airflow restrictions. Includes step-by-step troubleshooting for homeowners.

AC Not Cooling Properly

Discover common causes of poor cooling including low refrigerant, dirty coils, frozen evaporator coils, and undersized systems. Expert guidance on when DIY fixes work and when to call a professional.

AC Unit Won’t Turn On

Troubleshoot electrical issues, thermostat problems, tripped breakers, and safety switch failures that prevent your AC from starting.

Strange AC Noises

Identify grinding, squealing, buzzing, and rattling sounds. Learn what each noise means and whether it requires immediate professional attention.

Most Common Heating Problems

Furnace Not Heating

Understand why your furnace blows cold air or won’t produce heat. Common causes include ignition failures, flame sensor issues, and gas valve problems.

Furnace Short Cycling

Learn why your furnace turns on and off repeatedly. Causes include dirty filters, overheating, thermostat issues, and oversized equipment.

Pilot Light or Ignition Problems

Troubleshoot pilot light failures, electronic ignition issues, and flame sensor problems that prevent your furnace from lighting.

Heat Pump Not Switching Modes

Diagnose reversing valve failures, defrost problems, and control board issues that prevent heat pumps from switching between heating and cooling.

System-Wide HVAC Problems

Prevention is key: Most HVAC problems can be prevented with regular maintenance. Annual tune-ups catch small issues before they become expensive emergencies.

Need Help with HVAC Problems?

Expert diagnostics and repair for all cooling and heating issues. Same-day service available in Orange County.

📞 (949) 228-6242

📧 gotech.hvac@gmail.com

Licensed and insured | Family-owned | CA License #1120123

When to Call a Professional HVAC Technician

While some HVAC problems have simple DIY solutions, many require professional expertise. Call GoTech Air Conditioning and Heating if you experience:

Safety First: Never attempt to repair gas lines, electrical components, or refrigerant systems yourself. These repairs require licensed HVAC technicians with specialized training and equipment.

Professional HVAC Services

GoTech Air Conditioning and Heating provides comprehensive heating and cooling services across Orange County:

Service Area

Orange County: Irvine, Mission Viejo, Anaheim, Santa Ana, Laguna Niguel, Huntington Beach, Newport Beach, Lake Forest, and nearby cities.

View Full Service Area →

Ready to Fix Your HVAC Problem?

Don’t let heating and cooling issues disrupt your comfort. GoTech provides expert diagnostics and professional repairs across Orange County.

Call (949) 228-6242
Schedule Service Online

FAQ's

The best prevention strategy includes changing air filters every 1-3 months, scheduling annual professional maintenance, keeping outdoor units clear of debris, and addressing small issues before they become major problems. Regular maintenance catches 95% of potential failures before they occur.

The top causes of HVAC failure are dirty air filters, lack of maintenance, thermostat issues, electrical problems, and refrigerant leaks. Most of these issues are preventable with regular professional service and basic homeowner maintenance.

Consider replacement if your system is 15+ years old, requires frequent repairs, has major component failures like compressor or heat exchanger damage, or shows significantly reduced efficiency. For newer systems with minor issues, repair is usually more cost-effective.

HVAC repair costs vary widely depending on the issue. Simple repairs like thermostat replacement or capacitor replacement cost $150-$400. More complex repairs like compressor replacement or refrigerant leak repair can range from $1,500-$3,000+. We provide upfront pricing before any work begins.

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No Fix, No Fee – Free Diagnostics with Repair!

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Amazing service, he was on time and on the job always with a smile, he answered all my questions and great price as well, super recommended

Chilly Perez

Oleg was the best. They were very professional and fixed my prob in Less then 20 minutes . Oleg tuned up my aging air conditioner and topped off the coolant. It's now running better then ever and the house getting cooler faster. I would recommend them again and again.

Joey B.

Excellent service from this HVAC team! The technicians were prompt, professional, and clearly knew their stuff. They quickly diagnosed and fixed the issue with our AC system, explaining everything clearly along the way. The house is cool and comfortable again thanks to their efficient work. Highly recommend their services!

Alex Gol

Great service! I will use them again next time

Tanya Arbonne

I had an excellent experience with GoTech, specifically with Oleh, who helped move our furnace to the attic. The service was top-notch in terms of quality, reliability, and speed. Oleh was highly professional and efficient throughout the entire process. The job was completed quickly without compromising on the quality of the work. Great job!

I M

Oleg was professional, quick and honest. Installed our ecobee thermostat with great service. Highly recommend!

Patryk Piestrzeniewicz

Oleg did great work. First, he did a diagnostic at no charge. He then followed up with a few different options for a replacement air-conditioning unit. His estimates were much less expensive than those I received from other vendors. He was back within two days to install the new system. Very friendly and knowledgeable. I highly recommend. 5 stars.

Evan Katz

Excellent immediate service! Oleg is a professional who diagnosed a problem that another technician completely missed and detected a dangerous malfunction in our AC system. Thorough, professional and excellent quality service.

Vicky She

(949) 228-6242

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OUR LOCATION
Orange County, CA
WORKING HOURS
Mon–Sun: 7:00 AM – 7:00 PM
OFFICE PHONE
(949) 228-6242
EMAIL
gotech.hvac@gmail.com