HVAC reviews in Sunnyvale, California

had a great experience with SV Chimney Sweep. The technician — who is also the owner — was incredibly organized and solved the problem immediately. You can tell he takes pride in his work. He was very honest; it turned out to be a simple fix, and he not only showed me exactly how to fix it myself in the future, but also explained why it happens.

He was thoughtful and professional, even wearing protective covers on his shoes.

Overall, excellent service

The gas fireplace is working perfectly fine now. Thank you for working me in so quickly during a busy holiday week , honest assessment, explanations and reasonable pricing. Nathan saved me from scammers wanting to replace the entire system for thousands of dollars- can’t believe I almost fell for that. Highly recommend!!

Outstanding service and attention to detail. One of my chimney covers moved significantly out of place due to heavy winds. Nathan came to my place within two hours after I called him and found the builder had not properly fastened the covers on both chimneys. He made sure both were placed properly and then secured them with heavy duty screws. Thank you Nathan for your responsiveness and quality of work!

We really appreciated Nathan’s prompt diagnosis, and transparency around what the situation was and how to resolve it. He laid out options and acted with a sense of urgency to resolve them on our schedule. His prices were very reasonable too. Highly recommend!

Nathan took care of my parents' house. New stainless steel chase cover! Very professional and fast, highly recommended

Nathan was wonderful. He came to fix my fireplace on a weekend. He was super communicative, professional, and did a great job. He confirmed several times and let me know when he was on his way. He also took the time to make sure I understood how the system worked. I highly recommend his services! I would absolutely use him again.

Nathan did an amazing job. He replaced our chimney cap and cleaned it out. He was on time and very professional. Would recommend and will use again in the future!

Nathan from SV Chimney Sweep was fantastic from start to finish! He provided a free on-site estimate for our chimney cap installation and took the time to clearly explain the options and benefits. He ordered the parts promptly and arrived right within the scheduled window to complete the installation - just in time before the rain came.

His prices were very competitive, and the quality of his work and materials was excellent. Nathan was professional, punctual, and clearly knowledgeable. He used the best equipment to ensure our chimney is now well protected from rain, debris, and other elements.

I highly recommend Nathan and SV Chimney Sweep Inc for anyone looking for reliable, high-quality chimney service!

Service that is professional and quick. The technician did a great job of cleaning the vents. The dust that had built up was taken away. The movement of air got better. The air smells better now. Great job. I'm very happy with the service. The technician carefully checked and cleaned the ductwork. Dust accumulation has been taken away. The air quality got better. The house smells better now. Good work.

Great service for cleaning air ducts. The technician knew a lot and did a good job.

Dependable firm. Years have passed since we cleaned our ducts. The staff arrived on schedule and worked well. They detailed the method. The air quality improved immediately. Good overall experience.

Great experience. The crew was prompt and productive. Their duct cleaning instructions were straightforward. Early results were evident. Cleaner air feels better. Every detail was handled properly. Very glad.

We scheduled duct cleaning following increasing energy expenditures and weaker cooling. The expert said unclean ducts make the HVAC system work harder. All surfaces were cleaned and ventilation enhanced. Our method works better and costs less. Very pleased.

Completely exceptional service. The technician was polite and competent. They improved the air quality by cleaning the whole system. It makes me happy.

This air duct cleaning service is the best because the staff is reliable and the appointments are quick. No question was too much for the knowledgeable staff to answer. Smooth and clear contact from beginning to end. Beautiful event.

Great business run by competent individuals. The specialists showed up promptly and worked quickly the whole time. Both of them were quite kind and well-informed. Very good interaction and service. I strongly suggest it.

Full and organized service for cleaning air ducts from beginning to end.

Air duct cleaning service of the highest quality, with a friendly and helpful team.

The staff got there on schedule and worked their way through the whole home in an orderly way. They were kind and cleaned up everything after they were done.

My air ducts were thoroughly cleaned by them. My HVAC system is now far more efficient thanks to the removal of all dust, filth, and debris. I was really impressed with them.

The crew showed up on time and went over the whole cleaning process. They were careful and didn't make a mess. The air inside our house is now much better.