With outstanding efficiency, Don helped me diagnose my furnace over the phone and narrowed it down to the malfunctioning part. The part had a lead time, so it couldn't have been repaired that day. Don's knowledgeability saved a fruitless service call and prevented a waste of time and money. I ended up finding a used replacement part locally the next day (it was the only option that holiday weekend), and replacing it confirmed that Don's diagnosis was exactly correct. I offered to compensate him for his advice but he declined. He's earned my trust and future business. He's an oasis in a desert of salesy HVAC companies. read more

Five-Star Service! I called this vendor about my broken air conditioning, and he came out the very next day--on a Saturday, no less! He was prompt, extremely professional, and very friendly. The work was done efficiently and thoroughly, and the price was very reasonable. I couldn't be happier with the service--definitely a five-star experience in my book! read more

There is no one better than Don. Simply put, he's the only one in the business I trust. He's not going to B.S. you into spending money on something you don't need. I had two different AC companies this past summer tell me I needed a new furnace and AC system because I had leak in my system. Cost would be over $20K. Don came over and found a small loose gasket which was leaking gas, which somehow the other two companies missed after being here four times , and possibly even intentionally caused (I was also charged over $1K to refill the puron gas multiple times). Don had a gas detector that didn't pick up any other leak. Net net, Don saved me at least $20K which I'll be forever grateful for!! read more

This company has been our heating and cooling service for decades. Installed and serviced our units. Great and honest service. - Dublin Area. read more

Excellent service! Don responded immediately and came out to fix our old heater. We really appreciated his work, professionalism and knowledge. Highly recommended. read more

I found Don on this app with all the rave reviews. He came out same day. We needed a motor replacement. And was able to replace it as soon as he could. Thanks Don! read more

104 degrees today. AC goes out and Don answers right away and is able to come over a few hours later to save the day. Our AC unit is 21 years old so I was fearing we would need to replace the whole thing. Don was able to replace a few parts on the spot and change some wires that were incorrectly done. Quality work, professional, honest feedback and advice. read more

We used Don/Air Design for the first time back in August 2019 when one of our AC units was not working. Don replaced the capacitor, was and is responsive, trustworthy, experienced, and a good communicator. During the July 2024 heat wave, our second AC unit suddenly stopped working on a Friday afternoon. I reached out to Don that Friday evening and by Saturday morning 8 am, he had replied. He arrived by ~10:15 am Saturday, diagnosed the problem, replaced the capacitor, and the unit was up and running and generating cold air. Twenty five minutes later, he was paid, the job was done, and we're again happy and comfortable in our home. We were pleased in 2019, didn't hesitate to contact Don in 2024 and if the need arises in the future, wouldn't contact anyone else. read more

Don is the man! Our AC kept going out on us intermittently and he came to solve the mystery and help us out on short notice several times. He was spot on with diagnosing our issues and was able to help save the day and get us back to a cool house when our AC completely went out in the middle of the hot summer. Don is honest, knowledgeable, and provides A+ level service. Thanks for saving the day several times for us, Don! read more

We had a problem after another HVAC service removed and then reinstall our heat pump incorrectly. Very frustrating that original service would not repair their shoddy work. We called Don (Air Design) immediately, and he arrived promptly. He diagnosed the problem, replaced the faulty part, and thoroughly checked the system to ensure it operated properly. The thing that distinguishes Don is his careful attention to detail, his honesty, and his ability to communicate with the customer. I have used Don and his service several times over the past few years. He is trustworthy, skilled, and reliable. Two thumbs up. read more

Don repaired our Trane XV95 furnace. He pinpointed the problem areas and potential solutions over the phone and fixed the issue the same day. Highly recommend! read more

My Nest thermostat was broken. Since I did not care for how the Nest kept changing my setting with its "learning" ability, I had Don replace it with a Honeywell programmable thermostat since I like keeping my house at a constant 67 degree 24/7 since I have a indoor dog. Don was very responsive and came out as promised. read more

Don amazing and professional. I was in a pinch and he took care of me reasonably. Not the first time either, an asset to the community.

Much like the Maine State slogan, "The Way Life Should Be", Don and Jesse provide Air Conditioning and Furnace installation services the way it should be done. From scheduling the site visit, to discussing the options from mini split to 4 ton whole house heat pumps, providing a detailed estimate with options and then completing the installation with ingenuity and skill. This was the third time I have worked with them (my home has two systems and the third is a family home we are currently renting) and it was the most challenging of the three. Once again, they made it look easy...most of all these guys are just all around nice guys, enjoyable to have around your home, straight forward and a pleasure to do business with....I'd give them 6 stars if I could!!! read more

Air Design Heating & Cooling - Heating & Air Conditioning/HVAC Near Me - Danville, California

Air Design Heating & Cooling Inc We hired Gary to tune up our home heating system. He was on time and he was honest. He could have sold us some unneeded work but did not. I also had a structural issue with the house. I called him for some advice and he came over and look at it, no charge. His free advice was right on the money. read more

Friday at 5:20pm on our first real heatwave of the summer, it's 98 outside and I notice that our AC has stopped working. I troubleshoot all I know to do and can't get the condenser unit to kick on. I look on Yelp and start calling companies, desperately trying to find someone who can come ASAP as it's supposed to be H.O.T. all weekend! I called 9 places and either leave a message or found out they don't work weekends. At 5:59pm Don from Air Design calls me back, asks a few questions and offers to stop by on his way home...TONIGHT...on a Friday night! He arrives 15 minutes later, throws his mask on, grabs his tool bag and within about 5 minutes determines what the problem was and 15 minutes later gives us a clean bill of health and fixes the problem! I ask him a few questions about the health of our system, as we just bought this home 20 months ago...get his business card and at 6:45pm the temperature in our home has started to go down and it won't be the miserable H.O.T. weekend it was about to be! All because there are still small business owners out there that actually care about serving their community and treating people how they would want to be treated! Many thanks Don for being one of those businesses that care...and show it with your actions! Look forward to doing business with you again should the need arise in the future! I've already loaded you into my contacts as THE BEST HVAC GUY IN THE EAST BAY! read more

Air Design Heating & Cooling - Air Design Business Card - Heating & Air Conditioning/HVAC Near Me - Danville, California

Air Design is very honest and efficient. We had an issue with our furnace a few years ago and the with the A/C this past week. They came out the same day we called for each issue and resolved it. Don was great! read more

This last Sunday, our heater wouldn't ignite. We had a similar issue about a year ago, so we called Air Design out to replace our furnace. Before replacing it, Don Smith (the owner) wanted to do some additional testing and walked me through what was going wrong. He spent the time to show me that the heater was not getting the gas to the burners; hence no heat. Fast forward to Tuesday (three days after my first call) and a new furnace has been installed! Our family could not be happier with the new furnace. It is quiet, more efficient and didn't break the bank either. Will definitely refer Air Design around to anyone who needs or is thinking about a new HVAC set up! read more

Air conditioning turning off intermittently. Guy comes over. I restart it and working fine. Waits 40 minutes. Says no problem. Charges me 100$. Checks another A/C- says it's fine. Neither working during heat wave one month later. Wants another $100 to come over again. Not cool. Maybe this is the way the industry works, but... read more

Smart, smart, smart ! I contacted Don based upon Yelp reviews. He is very comfortable, meaning he is solid in himself and his business. To me, that means - Trustworthy. He analyzed my problem and made a very logical, simple solution. So I trust his judgment - simple (lucky), if the doctor ordered a fancier solution I'd go with that too. Thank you. read more

One of the thermostats in our house displayed a blank screen on a Sunday afternoon. After having no luck in solving the problem, I did some Yelp research and called Air Design Heating and Cooling. "Don" answered my call from his car (no fiddling about with an answering service) and I described my problem. He said he was on the road and would call me back later in the evening. Don called me back, as he said he would, and we talked about the situation. He said he had a replacement thermostat on hand and he'd try to fit me into a very busy schedule. He came by my house after normal business hours, replaced the faulty item and inspected the rest of my air conditioning/heating system. Don was polite, knowledgeable and very professional. I recommend Air Design for any heating and cooling issues. read more

Don and Jess just replaced my 35+ years old AC & Heating units with two brand new Trane high efficiency heating and cooling systems + Ecobee smart thermostat which is a really cool toy. The whole process was very smooth and trouble free, from the very initial call to the last day of the install, always very responsive and engaged, kept everything clean and tidy, wife and I were just delighted with the whole experience. Don is also very understated and was never pushy in trying to oversell you anything you don't need and I appreciated that. Both Don and Jess are very knowledgeable and honest and thorough in their work. Thank you gents for a job well done. read more

Fast and through. Don was on time, did the fix and charged a fair price. Highly recommend this firm. Nice to know a professional.

Don and Jesse at Air Design Heating and Cooling do excellent work. They have helped me with multiple projects: both repairs and replacements. In July 2021, they installed a new Trane 2 ton AC, 3 ton furnace (in the attic), and thermostat. I am grateful to them because they are responsive (they pick up their own phone, (vs an answering service)), helpful/quick (got an initial appointment the next morning), honest (have told me if a) nothing is wrong b) repair costs/vs likelihood it might need another future repair or c) reasonable replacement estimate ), clean (they wear booties and masks inside, and bring drop cloths), knowledgeable and prepared (has noticed technical issues that needed fixing, and had extra lighting prepared when our attic light was dark), customer service oriented (Don went the extra mile to lend a ladder, since we didn't have one, and be there for the permit inspector), and professional (Permit passed; Job got done well and on time). Overall: highly recommend. read more

It is 8:30 pm on Labor Day and Don just left our house. Our AC stopped working this morning and Don was one of several calls I made to find someone that could do a service call. Don responded and was able to come by after his last scheduled call. He arrived around 6:30 and had to trouble shoot the problem. All is good now and cold air is flowing. It would have been very easy for him say he couldn't fix it the problem tonight but he stayed and solved the problem. Would highly recommend him. He will be the first and only call if I have any HVAC problems in the future. read more

I contacted Air Design when our AC stopped working and got a hold of Don. He worked me into his schedule and came out the very same day! Don took the time to examine the unit thoroughly and ran some tests to determine the problem. Once he figured it out he gave me a fair estimate on the spot, and some great advice for what to do to keep cool while we wait for the parts we need to come in. I was really impressed with Don's professionalism and knowledge. We cant wait to have him back over to do the work. Thanks Don! read more

Don was super busy and booked out for a couple days but he still took the time to call me, listen patiently, and advise me on how to fix my system myself. He ultimately helped me help myself and did that all over the phone. There isn't another HVAC company I would call for any installation or service needs. Honesty in this day and age is a coveted treasure and most folks are looking to make a fast buck...not Don and for that I'll be a loyal customer. Thanks for helping us out! read more

Our furnace was making a loud noise and I called Don. He came on a Saturday and identified the problem. He gave an approximate estimate of the part and said he can call the parts store on Monday and give an accurate cost. Since both my furnace and a/c were installed in 1998, they were nearing their end of life and I discussed with him the cost of replacing both units with more energy efficient units. He gave options for single stage, two-stage and variable speed units. He did not put any pressure on selecting any of the options and still left the option of replacing just the broken part on Monday. I mulled over various options on Sunday and told him that I will replace the old units with a 96% efficient heating furnace and a 2 stage a/c. He asked me to think over the variable speed a/c also for an additional cost $2500/- After some more research I said yes to variable speed and Don ordered it on Monday. It would mean replacing my Nest thermostat with a high end Trane thermostat for which the reviews were not great. So I changed my mind and told Don whether we could go back to the 2 stage a/c. He was kind enough to change the order and ordered a 2 stage a/c and installed it on Thursday. Both he and Jess did a very professional job. They found a way to squeeze a larger size evaporator coil under the furnace that will improve the SEER rating of the a/c unit. I am very pleased with my interactions with Don and the work ethics of both Don and Jess and I highly recommend them for any HVAC work. read more

Air Design Heating & Cooling - Trane 2 speed Furnace S9V2C100D5 with variable speed motor 96% AFUE - Heating & Air Conditioning/HVAC Near Me - Danville, California

Don didn't ask me to write this, but it's the right thing to do. I have to agree with my fellow reviewers. Don and Jess are absolutely great. Don's quote was so much better than other quotes, I actually called him and asked him if he had made a mistake. I literally saved thousands of dollars by going with Don. I showed one of the other vendors the quote (though they didn't know it was from Air Design Heating & Cooling), and that vendor told me, "they're offering you a better product (Trane) than we're offering you, at a lower price... I'd go with them too if it's real." It was definitely real. Don and Jess were on-time, delivered the product in a professional manner, didn't try and upsell me other services, etc. And Jess, his installer, was great too. Clean, professional and more than fairly-priced. When they uninstalled the AC units, it caused the fans to run non-stop. Don and Jess came back and worked the problem for 2 hours, eventually spending almost 30 minutes on the phone with Nest to isolate a flaw in the thermostat's backplate. Once the replacement parts came, Don installed those for me too. No extra charge. In closing, I will turn to Don and Air Design Heating & Cooling for al my HVAC needs going forward. They're local to Danville, honest, trustworthy, professional and fair - all the characteristics I look for in my AC and Heating guys. read more

I honestly don't care what these guys do to my broken furnace. They sent a StrikeForce fighter to my house. Absolutely insane. You'll never meet a nicer guy. In all seriousness, their work was impeccable, and Jess is nicer than anyone you'll meet, let alone someone who can kill you with his little toe. Highly recommended for many reasons. A celebrity fixing my furnace... holy cow read more

Jess came out within 2 hours of my initial call to fix my heater! What a great guy and excellent technician! Price was very reasonable - fast and efficient! I will always call Don and Jess for my heating and cooling needs! read more

AT&T workers knocked out the gas line to our house and after a chilly night without heat, I called Don. He correctly diagnosed the problem then was so generous with his time, explaining how to locate and reset a safety valve over the phone. Professional, kind, and knows his business! read more

Air Design has been taking care of our HVAC needs for over 20 years! They have always been able to fix the problem in a timely manner for a very fair price! I highly recommend them! read more

We had a great experience! Don made a stop by our house after what probably was a very long day of appointments for him in the heat. Our air conditioner wasn't cooling and he seemed to know just what to look for. He quickly diagnosed the problem, replaced the part, and our air conditioner was back up and running. We appreciated that Don went out of his way to check on our air conditioner, when he could have just scheduled us in for another day. He commented that they were trying to fit people in during the heat wave. We appreciate your care for your customers! We highly recommend them! read more

Don fixed our furnace 2 years ago for peanuts compared to one of the "Service (fill in the name)" outfits that want your money more than properly fixing your problem for a fair price. Then, Don came yesterday 1 hour(!!!) after I called him about my AC that stopped blowing cold air. He fixed it quickly for a price way under what I thought it would cost. He even turned down a bonus I wanted to give him for responding so quickly and doing a great job for a low price. Don is one of those rare technicians/mechanics these days who is great at his work and also is honest and fair and not trying to upsell you or inflate repair costs. Don is the best you will find, and also is a really good and nice man. I will never have anyone else do my HVAC repairs or replacements. read more

AC unit went out on Saturday night of Labor Day weekend. I called Air Design on Sunday and Don called me back in less than 30 minutes. I explained the problem and he was out in less than an hour. Don diagnosed a problem with the starter and he had one in his truck, so he replaced it and checked the unit for other potential problems. On a day that is supposed to reach 111* we can't thank Don enough for the outstanding service. read more

It's 92F outside. I have an elderly grandma in my home in San Ramon. AC is working but the furnace fan is dead. AND IT'S SATURDAY... I called several providers and started to get desperate because nobody worked on weekends. Until I call Don. He picked up immediately, ask a couple of simple questions, promised to squeeze me in today although he was booked completely. Don came over in three hours, diagnosed and fixed everything within 30 minutes. The grandma will survive... Thank you, Don. read more

The A/C at our home went out yesterday evening in the middle of a heat wave. After reaching out to a few companies, Don was the quickest to respond. Not only was he very polite over the phone, he took the time to understand my problem. Don scheduled me in for a same day appointment and even called me before arriving. After his thorough diagnosis, Don was able to quickly isolate and replace the bad part. He then waited patiently as I tested the A/C inside our home to make sure it was working to my satisfaction. I found Don to be very genuine, honest, and his price was reasonable. I highly recommend him! read more

I'm surprised I didn't Yelp Don before now. Don is great - he's very trustworthy. professional and knowledgeable. He installed a new heater and AC System at our new home. He also fixed an AC unit at a rental home. He does a GREAT JOB!! read more

Very professional service and reasonable price offered. We have a new AC replaced because the 36-year old original one finally gave up this time. After checking all the reviews on Nextdoor and yelp, we decided on them and were very satisfied with their work and the price. Definitely would turn to them again if the other AC quits the job in the future. read more