
Serving Bangor, CA and surrounding areas
Approved
In business since 2019
Free estimates
Credit card accepted
"He knew what to look for and repaired the air conditioner. The charges were less than I expected. Great Service Thanks"





Serving Bangor, CA and surrounding areas
Approved
In business since 2019
Free estimates
Credit card accepted
"He knew what to look for and repaired the air conditioner. The charges were less than I expected. Great Service Thanks"




Serving Bangor, CA and surrounding areas
Approved (Corporate)
In business since 1989
Free estimates
Emergency services offered
"I recently bought a foreclosed home and was not sure of the condition of the heating and air conditioning unit. So I called Gallaghers Plumbing Heating and Air to see if they could check the heating unit out. Gallaghers was more than happy to come and look at the unit and they seemed genuinely happy to have spoken to me. I made the appointment for them to come out for the next morning. Right on time the next morning they showed up. After looking at the heater, the technician told me that I had a couple of leaks in one of the lines coming from the heater. The line that had the leaks would allow carbon monoxide to leak into my house. The technician informed me that I would need a new heater. My heater was installed the very next day. All of the technicians were very friendly and professional. I am very happy to be a customer of a company that is quick to respond to a potentially dangerous situation.
"

Serving Bangor, CA and surrounding areas
Approved
In business since 2023
Free estimates
Credit card accepted
"I own a business and had a company come out to fix our air conditioner. They came out 4 times, charged for all those time and the unit still was not working properly. I then decided to try someone else, so I called Thermotech on the referral of a friend. They came out, diagnosed the problem within 10 minutes (it was an old crumbling circuit board), showed me that bad part, ordered it and had it fixed in less than 24 hours. We have not had a single problem since! I was so happy with their service that I ended up using them for my home HVAC system.. I even referred them to a family member and they did a home install of a brand new HVAC system and they were very happy with the price, install, workmanship & fair pricing. Thermotech has found a customer for life with me. I have had so many bad experiences over the years with other companies telling & thermotech has been a game changer."

Serving Bangor, CA and surrounding areas
Approved
In business since 2022
Free estimates
Credit card accepted
"Great company. Excellent work. Very professional and help. Over and above my expectations. Iâ d recommend them to anyone and everyone."
Serving Bangor, CA and surrounding areas
Approved
In business since 2015
Free estimates
Credit card accepted
"Yesterday it was 112 degrees and so it was the perfect evening for our AC to go out. We tried cleaning the coils and all the DIY tricks we could think of, but when we woke to the house still being in the 80s we knew we needed a service call. Dereck Nail was familiar with my HVAC from prior to starting his own business so it made sense to give him and his team a call. He got back to me quickly, understanding the importance of our household of 5 relying on not just comfort, but safety as well, and said he could squeeze me in the same day between appointments. He arrived at 9 am, diagnosed the problem, and replaced the broken $30 part. He is handling the warranty paperwork as well. In a time of huge businesses that treat you like a transaction, it's nice to see a company that exudes the hometown feel while still maintaining a high level of professionalism. It's like the old family doctor who you can get to know and who will take the time to explain the issue and make proper recommendations. I will definitely continue to work with Innovative Heating and Air in the future."
Serving Bangor, CA and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
I'm a HVAC TECHNICIAN. I been doing HVAC for 10 years. I live in Northern California.\n

Serving Bangor, CA and surrounding areas
Approved
Small jobs welcome
Just a dad trying to make a few extra dollars to keep his family afloat I can offer a lot from little handy man fixes to towing and moving things with my truck and trailer
Serving Bangor, CA and surrounding areas
Approved
We specialize in high-quality synthetic turf installation designed to give you a clean, low-maintenance, and long-lasting lawn all year round. Our team focuses on precision, durability, and attention to detail to ensure every project looks natural and performs at a high level.\nWhether you’re upgrading your backyard, improving curb appeal, or creating a pet- or kid-friendly space, we deliver reliable results tailored to your needs. We take pride in honest pricing, clear communication, and work that speaks for itself.

Serving Bangor, CA and surrounding areas
In business since 2004
Emergency services offered
Warranties offered
"We were extremely pleased with the service provided to us by Bob's Air Repair and their technician Luke T. The heating in our HVAC system was failing to launch when turned on, although it made noises of an attempt to do so. From the time we placed the service request to Luke's arrival everything was handled in a efficient & professional manner."

Serving Bangor, CA and surrounding areas
In business since 2025
Free estimates
"Специалист справился с работой очень хорошо и быстро."


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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