Serving Tujunga, CA and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
"My experience with heating and air conditioning repair, replacement, and new installation was excellent. Their staff was amiable, well-informed, and meticulous. Our device is operating more efficiently than before. Really trustworthy service!"
+24
Serving Tujunga, CA and surrounding areas
Approved
In business since 1988
Free estimates
Warranties offered
"The service I received from Air-Tech was above my expectations. Alex made the selection process effortless and the installation was fast and efficient. The folks with Air-Tech are real pros."
+8
Serving Tujunga, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2006
Free estimates
Emergency services offered
"AC Dave is great as a partner in our business. Facilitating all of our Air Conditioning needs including new units, routine maintenance and troubleshooting. They are great! highly recommended."
+6
Serving Tujunga, CA and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"Sayed Haroon was very happy professional and helpful and very informative, I would recommend him for any service and next time if there?s a problem with any of my air conditioning system I?m definitely gonna be dealing with him"
Serving Tujunga, CA and surrounding areas
Approved
In business since 2019
Free estimates
Warranties offered
"I highly recommend Top Energy Solutions. During the heat wave my air conditioning system blew out hot air. I expected to wait days for a technician to come out. Leor sent one the next morning. The technician quickly located the problem and fixed it within minutes. Their employees are professional, courteous and very knowledgeable."
+87
Serving Tujunga, CA and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"I had my ducts cleaned and sanitized and the service was absolutely perfect. The technician was on time, professional, and explained everything clearly. The difference in air quality is noticeable right away ? the system feels fresher and runs smoother. They took their time, did a thorough job, and left everything spotless. I?m extremely satisfied and highly recommend their duct cleaning and sanitizing service to anyone who wants real quality work."
Serving Tujunga, CA and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Friendly quality air conditioning estimate"
Serving Tujunga, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Emergency services offered
"My AC quit working on Tuesday, Wednesday night I got on Angi! Just Be Cool Supply LLC were the first to call. They came this morning (Thursday) and fixed my AC! AWESOME JUST BE COOL SUPPLY LLC! THANK YOU SO MUCH!!!"
+11
Serving Tujunga, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Emergency services offered
We specialize in residential and light commercial HVAC equipment, installation, and repair and maintenance. Over 11 years experience.
+22
Serving Tujunga, CA and surrounding areas
Approved
In business since 1995
Free estimates
Emergency services offered
"Season Control arrived on time for the estimate, gave me a lot of information about the HVAC system and which was best for my house. The installers arrived on time, put tarps on the floor, were very neat and finished the job in 1 1/2 days. It works great, quiet and very efficient. Justin was the man who came for the estimate and supervised the job. He is very professional, but not stuffy. Very nice, and knows his air conditioning systems! His price was a lot less expensive than the other three bids. I made a good choice by hiring this company and highly recommend Season Control."
+14
Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.
Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.
Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.
Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.
Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.
From average costs to expert advice, get all the answers you need to get your job done.
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