Darrell's Heating and Air Conditioning

His son Stuart is a delightful young man who does excellent work.

"I'm having a hard time believing the other two reviews about Darrell's Heating and Air Conditioning. I almost wonder if they are competitors. Darrell and his son Stuart have been "tuning up" our air conditioner and furnace for several years. Darrell saved us thousands of dollars one year by repairing our air conditioner when nobody else could. In January of this year, our furnace went out while my husband was hospitalized for pneumonia. Darrell not only gave me the best price in town, when he found out my husband was out of work, gave us a discount on his already wonderful price. He had the furnace installed immediately because he was concerned that my husband not comes home to a cold house. His son Stuart is a delightful young man who does excellent work. I won't go to anyone else in the Tri-Valley for any of my heating and air conditioning needs. If you want honesty and a fair deal, call Darrell."

Rhonda P.
Pleasanton, CA

100% Satisfaction Guaranteed​​

  • • Once repaired, your unit will have trouble-free operation for 1-year – minimum.

  • • FREE Equipment Replacement Estimates & Trouble-Free  Residential Maintenance.​

  • • FREE Service Calls, With Authorized Repair.

100% Best Price Guarantee​​

  • • If there's a better price from our competitors, we'll not only match it, but, we'll beat it by an Additional 10%.(*Within 35 Miles)

  • • Darrell's is constantly reviewing the pricing of other companies so that  we can give you the best possible value.


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We Offer The Following Professional Services
They have a customer for life!

"We recently had an issue with out AC, and after a quick call to Darrell's (I called before business hours, expecting to leave a message, but he answered!) I was walked through a quick bit of troubleshooting (checking breakers) and such and was then told that a tech could arrive the following day. I then got a call back a couple of hours later and was told that they were able to shuffle things around to fit us in...on a Sunday!!  The tech arrived, was super qualified and nice as heck, and sussed out the issue right away. He did need to return the following day with the required part, but he called first thing, arrived right on time, and got us nice and cool again. They have a customer for life! You could surely call someone else for your AC needs...but you'd be making a mistake."

Eric L.
Livermore, CA

Livermore • Pleasanton • Dublin • San Ramon • Sunol • Alamo • Danville • Blackhawk • Diablo  • Walnut Creek • Antioch • Brentwood • Discovery Bay • Oakley 

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They were patient and courteous all day.

"I had Stuart & Co replace the HVAC stack in my little 3/2.  An install in a tiny little closet in the main living area has to be much more difficult than doing it in a basement with plenty of room to work.  I can't say they were magical fairies who installed sans mess, but I think i got a good install that will hopefully provide decades of reliable service.  I watched the team like a hawk and peppered them with questions during the install... why is this going here? Could you do it this way instead?  Mind you, this wasn't a couple of questions... it was dozens... over hours.  They were patient and courteous all day... in my sweltering house.  The men didn't answer their phones or read texts, other than a short lunch break they worked non-stop.  Thank you Darrell's."

Kimo C.
Livermore, CA

Fixed the air conditioner in a quick and efficient manner

"My air conditioning went out on one of the hottest days of the year. Darrell's sent someone out right away. The technician drove through bumper to bumper traffic to get to me he arrived with a great attitude. He quickly found some worn out parts and repaired the unit at what I feel is a fair price.  There were no attempts to up sell or sell service contracts. He just fixed the air conditioner in a quick and efficient manner. They will stay on my list of who to call.​"

Paul S.
Livermore, CA

Your Comfort is our Business

It's Faster To Call Us.

Professional service and well received by our home and business too

"Best in the area! We've used Darrell's many times over the years and have always been very delighted with their service. Once, they were out for an A/C Repair when we had a boiler problem. 
To our surprise, the technician, Stuart was also able to repair it, getting both operating. It saved our day as we had an event schedule in less than 2 hours. Professional service and well received by our home and business too. Darrell's now maintains all of the equipment at the Winery and our home."

Steven Taylor


Stuart arrived within the 2 hour window we were given by the office, and at first I thought, "Who is this young kid?".   But, once he introduced himself as the Son of the owner and talked with us briefly,  his professionalism shown through.
He asked us a few questions about our Air Conditioning unit and he was like a tornado, zipping here and there.  He made sure to keep us informed at all times what he was doing and what tests he was running.  My husband's a real gear head, so he followed Stuart around asking lots of questions.  Stuart didn't mind, in fact,  he kind of like it,  teaching my husband a thing or two.  Within about 20 minutes  Stuart had our diagnosis and report.  He told us that the unit was never installed properly,  that he sees this all the time,  where companies take short cuts and use old  "Stove Pipe"  duct in the attic.  This does something with temperatures and what he called  Splits? He also informed us that the  D. O. E. and. the  E. P. A. ,  both,  banned this type of duct several years ago.  Telling us that current code required a  "Wire Flex"  type ducting that holds temperatures more true to what they should be when they leave the furnace,  or air conditioning.  He showed us the Exit Temperatures at the registers and we were only getting about 12° output.  Stuart informed me that we should be getting about 20°.  He also sat down with us and explained how much money it was actually costing us, Summer and Winter.,  by not installing this new duct.
We went ahead and scheduled the duct replacement,  as expensive as it was - including the required tests and permit.
Afterward, even without being shown,  we could tell that there was a Huge Difference.  Not only was it colder,  (we were getting 22° now),  but it was so much quieter and the airflow was a lot stronger.  We were actually spending about 35% more on our heating and cooling costs than necessary.  And all because a company was either afraid to tell us for fear of losing the installation job,  or,  they really didn't know.  I find the latter not believable.
Thanks to Darrell's Heating and Air,  and a really young looking guy named Stuart, we actually have the Hv/AC system that we thought we were getting before.
We tried to go back to the installation company and have them correct their mistake,  but,  they were out of business...  Of course.
Darrell's Heating and Air,  they'll tell you straight.
Whether you like it or not,  it's going to be the truth!
And, that's pretty refreshing these days.

Cathy Hil
Livermore, CA
Livermore, C
They came out the same day I called them on a really hot day

"I'm very happy with the service I've been given today.!  They came out the same day I called them on a really hot day and were able to diagnose the problem quickly, and for free.  Unfortunately the unit I have is 18 years old and they had to really search for replacement motor as it was no longer made.  It only took 2 days to complete the job and the technician worked during the hottest part of the day around 97 degrees.  

I would use them again should I have the need.  Service is warranted for one year."

Lawrence B.
San Francisco, CA

Check out what our customers have to say about their experiences with Darrell's Heating and Air Conditioning:

​Call 925.292.4500

Very knowledgeable and answered all our questions and concerns

"Our a/c went on Friday night during a heat wave 100+ degree weekend. We called many places on Saturday morning and were given appt times by other companies of five days out or no answer at all, or $300 charge just to come take a look. We called Darrell's who answered us right away, and gave us a prompt appt time that they would be out. Stuart was our technician who was great and found the issue right away. He was very knowledgeable and answered all our questions and concerns. Our a/c is over 30 years old and will need to be replaced soon, and I will definitely be calling them to replace it. We have two small children and having a working a/c on such hot days was crucial and they saved the day for sure!"

Jessica K.
Pleasanton, CA