Thermostat Installation Companies in Fullerton, CA

"I recently had the pleasure of working with SoCal Boys Heating and Air Conditioning, and I couldn't be more impressed! From the moment I called for an appointment, their customer service was exceptional. The staff was friendly, knowledgeable, and eager to assist. The technician (Gerry) arrived on time, equipped with everything needed for the job. He took the time to explain the issues with my HVAC system and provided clear options for repairs and maintenance. I appreciated his honesty and transparency—there was no upselling or unnecessary pressure, just genuine advice tailored to my needs. The repair process was quick and efficient, and I was pleasantly surprised by how reasonable the pricing was. My system is now running better than ever, and I can already feel the difference in my home’s comfort level. What stood out most was their commitment to customer satisfaction. They followed up a few days later to ensure everything was working well and that I was happy with their service."

"Chris, the owner explained each option to us thoroughly. He and his team provides excellent work, contacted and arrived per commitment, left everything cleaner then when started. Proactively provided an inspection after the install. Showed us how to operate and provide general maintenance. If weâ  d like, such as changing out a filter however he Is also available and has scheduled tuneups. Overall a great experience as Chris is very accommodating and conscientious."

"Prompt response and repair."

"Most affordable of all the companies we bid.. Communicative, quick, professional"

"I had Mammoth Air install a 3 zone mini-split and they were by FAR the best price. They were very responsive and spent the time to accommodate my HOA’s requirements. Their customer service was excellent and they were very personable and did an excellent job!"

"Customer service and the service tech were awesome"

"They are excellent and do great work .Very cordial and respectful. I would highly recommend them."

"Communicated all information pertaining to job in a knowledgeable professional manner. Prompt on time. Work area clean and respectful of home. Would highly recommend."

"I have used Sunmist on many jobs over the past 19 years .. , plumbing , tankless water heater , electrical and new furnace and air conditioning unit. Ed is reliable and fair and guarantees his work 100 %. I have used this company on all my plumbing , heating and air needs . They have gone to riverside to work on my mothers house as well. I always recommend Sunmist plumbing to my friends and family."