Three Cord Enterprises
Website
Three Cord Enterprises
In 2009, Laurel McCarthy began Three Cord Enterprises, Inc. dba Air Doctor based on the principles of integrity, quality service, and family values. She brought the founder of Air Doctor on board for his 20 years of expertise in the HVAC industry and his personal goal to improve indoor air quality to help asthma and allergy sufferers like his children.

Air Doctor is a certified 100% woman-owned small business enterprise that employs a professional, knowledgeable and courteous team of technicians. Air Doctor has served a remarkable base of commercial clients from Military Bases to Medical Facilities to High Rise Office Buildings and more throughout the State of California.
Services
Air Doctor is proud to be the Leader of Air Duct Cleaning and Dryer Vent Cleaning in Northern California. Since 2009, we have been providing duct cleaning for homeowners, property management companies, businesses, government agencies, restoration companies, and other industrial buildings.

We are certified by the National Air Duct Cleaners Association (NADCA), and all of our technicians have an extensive knowledge of HVAC systems and ducts to help ensure a clean and safe environment.We strive to provide the highest indoor air quality both at work and at home. Our uniformed technicians are experts in any situation, from small residential jobs to complex multi-story commercial buildings and dwellings.
According to NADCA, dust, dander, and debris build up in your duct system and are being re-circulated throughout your home about 5 to 7 times a day. These can contribute to lower indoor air quality and may be the cause of other health issues. These contaminants can also lead to a less efficient heating and cooling system.
This could be caused by holes, leaks, disconnected ducts or unbalanced air distribution. Sealing your air ducts can lead to a more comfortable, energy efficient home. According to Energy Star, about 20-30% of the air that moves through your ducts can be getting lost due to these holes or improper connections.
Safety Concerns: lint buildup can block the air flow from your dryer creating high levels of heat that can lead to a fire. Dryer Efficiency: airflow restriction causes your dryer to run longer to dry your clothes putting a toll on your dryer. Energy Savings: decreasing the time it takes to clean your clothes can also decrease your energy bill.
Wondering why your dryer vent clogs up with lint so fast? Your problem may be an incorrectly installed dryer vent exhaust duct! If your vent is not installed properly it may be causing lint to build up at a certain point and even restrict your dryers air flow. If lint is backing up the vent you could very well be susceptible to a dryer fire like the photo to the right.
Reviews (12)
Vonda S.
Vonda S.
Sep 20, 2021
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When I called to get a quote to clean the air ducts at a business facility, the nicest lady ever helped me schedule & answered all my questions! She followed up with calls /emails. The very knowledgeable team came out to quote and educated us on best practices for our system. The work was done professionally and timely.

I'll hire for future maintenance and I highly recommend!
Claudia M.
Claudia M.
Feb 09, 2021
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Easy to schedule, arrived on time, super polite, and answered all my questions. They were good about keeping masks on and practicing social distancing.

Followup: I had such a good experience with Air Doctor coming to my house that I scheduled them a week later to service a rental in San Francisco. They communicated directly with the tenant on arrival, and maintained proper social distancing and wore masks indoors. The tenant had a good experience and reported they were both polite and even when so far to explain how to clean the lint filter.
Jane H.
Jane H.
Dec 24, 2020
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Professional and courteous young men.The air ducts are clean and air is fresh.So healthy for us right now
Debra W.
Debra W.
Dec 23, 2020
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I've used Air Dr. multiple times and each time they did a great job. Bryan and Dillon today were timely, professional, thorough, kept my floors clean and gave me some awesome insight and advice regarding sealing gaps behind my intake filter and on the edge of my furnace vent so to keep my interior air clean & interior temperature constant without drawing in cold air from my garage. Thank you Air Dr. !!!
Naya C.
Naya C.
Nov 21, 2020
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Honest, reliable, caring and knowledgeable service! Laurel, the owner, walked me through each step of duct cleaning over the phone before I even met her crew. Brian and Dillon showed up on time and gave me a full education on their service and my HVAC system. They were super professional, friendly and did excellent work. I highly recommend Air Doctor for your duct cleaning needs!
Vanessa R.
Vanessa R.
Nov 18, 2020
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Shout out to Bryan and Dylan from Air Doctor for giving our ducts a deep cleaning! They're pretty sure they've never been cleaned, and we really needed it, esp. after all the fires and smoke we've all had here. Super reasonable and fair rates too. I highly recommend!
Jon K.
Jon K.
Nov 02, 2020
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Punctual, clean and polite. Just a little expensive for the tine it took to clean ducts.
Joanna R.
Joanna R.
Mar 05, 2020
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Air Doctor was referred to us by Galvin Appliance. Christian and his buddy had to make 2 trips, discovering our dryer venting was not up to code. The guys and the office were very professional, helpful and timely. Would highly recommend these guys.

Joanna Rudy
Francisco L.
Francisco L.
Jan 31, 2020
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They were very professional and reasonably priced, especially after the fires. Came over on time did the job and were friendly and had great customer service! Will definitely use them again!
Cb G.
Cb G.
Dec 22, 2019
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After considerable research and reading Yelp reviews,
we hired The Air Doctor to clean our dryer vent. It has been at least 3 years since we last had it cleaned. We have 3 shedding cats that keep our laundry room pretty busy.

We worry that excessive lint accumulation may lead to a fire so we needed the service as soon as possible. Fortunately, Mary was able to accommodate our request on short-notice before the Xmas holiday.

On Dec 17th, Brian promptly showed up for the service. He explained the cleaning process and was very professional. Our dryer was definitely in need of cleaning- we could
Elsie H.
Elsie H.
Sep 08, 2019
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The friendly guys were great & got the job done in 30 minutes. Even called to say that they would be an hour early from the stated estimated time. Appreciated the customer service they provided.
Harrie D.
Harrie D.
May 03, 2018
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I can't recommend Air Doctor high enough.
They've been our go to local company for duct cleaning for years. Laurel the local franchise owner is always pleasant and helpful and her crews are professional, always friendly, prompt and do a great job.
Their prices are fair and always within the estimate given.
Great local business!!