To our Customers Regarding COVID-19
1974 - 2020
46 Years
of Service
1974 - 2020
46 Years
of Service
(925) 427-5522
Bay Area Heating, Plumbing & Air Conditioning Since 1974

Customer Testimonials

We take the complete satisfaction of our customers very seriously. Read some of our many customer reviews below, and also check us out on public review sources such as Yellow Pages and Facebook by clicking the logos below.

Reviews on Facebook
Judy's Book Reviews
Stewart on the new Yellow Pages
Better Business Bureau of San Francisco
StatisticsReview of Stewart Heating Plumbing Air Conditioning

Don M. Came to service my heater today. It was a preventative check up as nothing is wrong with my heater. Don has been to my house on several occasions to provide service maintenance. He is always friendly, professional, helpful, neat and polite. Couldn't ask for anything better.

Laurel R. - Walnut Creek, CA | Furnace Service

The are the best just right down the street from our work. The are here today to installed our new a/c and heat pump. They are very professional that we can work around them.

Mary S. - Pittsburg, CA | HVAC Installation

Recently had Stewart Heating and Air Conditioning install an AC unit. They had great customer service, very prompt service and installation. Overall very pleased.

Maureen W. - Lafayette, CA | AC Installation

It is so refreshing to do business with a company who delivers good customer service, offers reasonable rates, shows up on time, does a professional job and whose employees are courteous. This description perfectly summarizes my experience with Stewart Plumbing, Heating & Air. Brittni was friendly, provided helpful advice, demonstrated superior communication, offered convenient scheduling and disseminated accurate information. Service Tech Kevin, who performed the gas control valve replacement on my furnace, offered equally competent, prompt, efficient and friendly service. The rates quoted were fair, and the $59 for $25 coupon was honored as advertised. All in all, a very positive experience and I will definitely use Stewart Plumbing, Heating & Air again, and highly recommend them to others.

Donald P. - Antioch, CA | Heating Service

We were taking advantage of the $99 special and it was great! Our appointment was quickly setup and our technician Jason arrived well within the widow of time, took care of the issue promptly. He was knowledgeable, professional and friendly. Will definitely use your services again if needed. Thank you!

Marti R. - Antioch, CA | HVAC Service

Very timely repair service. Our Air conditioning condenser fan went out on the worst week, triple digit temps the whole week. The fan was ordered & repair completed in a week. I got Jamie, their repair technician, he is very knowledgeable & friendly, even toughed out the repair in 104 heat & kept his sense of humor. From the time I called in to have my diagnostic visit to scheduling the repair visit, I spoke to Brittney, who is very courteous & helpful. She was aware of the crazy temps for the week & scheduled my repair ASAP. In my opinion, Stewart's HVAC repair is a 1st class business. Finding them on Angie's List was a blessing. I would definitely use the again.

Brent S. - San Ramon, CA | Air Conditioning Service

My AC unit went out over the weekend. I called Stewart Heating & Air on a Sunday and they said that the earliest appointment they had was on Thursday, but asked if I wanted them to give me a call if someone else canceled. Thankfully someone did and they called me back later on Sunday and gave me an appointment for 8:00 on Monday.

Kevin Johnson came out, showed up on time, diagnosed the problem immediately, and quickly fixed the issue. By 9:30 I had a running AC unit again. Kevin even stuck around to make sure everything was working correctly. Kevin didn't try to sell me anything extra (like a lot of companies will do) and I couldn't be happier with the friendly, professional service. The price was right as well.

I'll definitely call Stewart Heating & Air Conditioning the next time I need service or just routine maintenance.

Mel M. - Pittsburg, CA | Air Conditioning Service

My only complaint is that it took a few days to get an appointment, but what can you expect with trying to get AC service in the middle of a heatwave. Don showed up, quickly diagnosed and then fixed the problem. Quick, courteous and efficient. Would highly recommend, and will use again in the future.

John R. - Danville, CA | Air Conditioning Service

Had to have a new furnace put in today because our AC has been not working properly for 5 weeks. Yancy and John were efficient, friendly and knowledgeable. I can only hope that the AC continues work.

Thank you Yancy and John for your professionalism and installing the furnace so swiftly.

Adele J | Furnace Installation

They are the best! Jamie and Don have been awesome each time they come out. It is like having friends over as they are so personable and warm. Each time they come by, they fix or update anything that needs to be done. But with the yearly check-ups, hardly ever do they need to do any repairs. They keep my air conditioner and heater running at tip-top condition!!

Adam R | HVAC Service

Yancy and Jack came out on time and installed my new heating and air conditioning unit in a very professional and friendly manner. It was not easy replacing the AC unit as there was a fence surrounding it that needed to be removed, but they removed it in no time, and cleaned up the site, so my beautiful new AC looks super in my side yard! They were quite thorough, checking everything out before leaving. Yancy even went into the crawl space below the house to check on the ducts. Thanks you guys for a job well done!

Jean H | HVAC Installation

Jesus M. was so professional, courteous, friendly from our first encounter all the way to completion of the job. He's knowledgeable & totally explained operations, equipments & maintenance of the system. He's one of the best.

Emilie B | HVAC Service

Sergio arrived on time with a very pleasant and professional greeting. He knew what to do (cleaned the filters better than I had seen before); checked the furnace operation; checked the output temperature at each register; checked the inputs; explained his results and left a copy along with the invoice. Best service I think we've had. Congratulations Sergio and thank you Stewart.

Kent T | HVAC Service

Sergio was very professional and knowledgeable about our furnace system. He took the time, effort to explain and to demonstrate, why I needed some follow up clean up to the blower wheel which I intend to schedule. He answered every question I had regarding my system and how best take care of it. Sergio is a valuable asset for this company.

Joseph R. | HVAC Service

Jamie came by this morning and did an outstanding job of checking our furnace and explaining to us the importance of changing the furnace filters on a regularly scheduled basis. We appreciated his sound advice and will follow it.

Ron V. | Heating Service

Alfred was on time, friendly and professional as are all of the people I have worked with at Stewart Heating and Air! Keep up the good work!

Lisa S. | HVAC Service

We love our new furnace! Thank you Sam & Tommy! Great job!

Ron R. | Furnace Installation

I found Sergio Ruano to be a very personable and knowledgeable technician. He did a thorough check-up of my furnace and assured me that all was in good working order. I am extremely happy with the services I've received from Stewart Heating and A/C and would have no problem in recommending this company to family and friends.

Vivian N | Furnace Service

Stewart Heating and Air did a maintenance check on my heater today. Rich L. was very professional. He was at my home for about an hour and a half--checking on heater parts, temperature control and filters. Had to order a few parts, but my heater is almost 15 years old and still working well! Great company!

Rich L. | Heater Service

Alfred came in a timely manner and was very polite. He didn't mark up any of the walls or the doors with the equipment. The company had followed up on a repair that was done 2 days prior and the technicians had done an amazing job of a hand off so Alfred knew what he had to check without me having to explain. He did a thorough job of explaining everything that was done and showing me the damaged items that needed to be repaired. He helped me find good spots for my carbon monoxide detectors and told me where to store my furnace filters. This was my first time having my furnace serviced for a tune up and I would do this again. Thank you.

Vishnu R. | Furnace Tune-up

Jamie is a very professional and personable person to do work in your home. After meeting him the first time I requested him on multiple occasions and have never been disappointed.

Martin R. | HVAC Service

Just had the annual heating system tune-up carried out by Sergio Ruano from Stewart Heating and Air. Sergio provided the professional, high quality service that the company prides themselves for. Sergio arrived in plenty of time for the scheduled appointment and got straight to the task at hand. Sergio took time out to answer any questions I had as well as explaining some of the inner-workings of the heater system... tips on things to look out for, etc. I highly recommend Sergio as well as Stewart Heating & Air.

Stephen B. | Heating Tune-up

Mike was extremely helpful and knowledgeable with our plumbing situation. He was on time, efficient, and polite. I would highly recommend him to anyone looking for plumbing service.

Stacey B | Plumbing Service

I wish there were 10 stars that I could give Jeff for his excellent, patient, professional, friendly, care! He called ahead, was on time, & got right to work. He asked about my needs & discussed options. He even told me one thing was actually still in good shape, & didn't need replacement! That shows sincerity & integrity, & I'm so-o-o grateful to find an honest employee & business. Jeff is a wonderful plumber (& individual), such an asset to the company. I am thankful he came to my rescue. I was recently flooded by a hot-water heater blowing its top, & have been a bit stressed about the possibility of any more water flowing through my house... Jeff checked all the pipes & connections throughout, putting my mind at rest. Thank you, Stewart Heating & Air, for employing such a great guy! I'll be sure to call on you again should the need arise.

Cindy | Plumbing Service

Mike Kelly did an excellent work: nice personality and craftsmanship.

Greg N | HVAC Service

Rich L & Alfred J were so patient & Rich particularly showed me all the parts & slowly directing me options that can benefit my heating & air system. Alfred altho he's in training was contributing his extra knowledge in the process. Both did an excellent job & please recognize them highly for an excellent effort & their professionalism. They even reassured me that they will be back next Friday to assist/walk thru w/ the installers. Thank You, Emilie

Emilie B | HVAC Installation

I had a good experience with Sergio. He cleaned my heating system and explained clearly what was what.

Joseph M | Furnace Maintenance

Sergio was very professional with his work. He explained each item on the checklist thoroughly. He has a very nice personality and so the experience was very pleasant. I will ask for him next time for my HVAC maintenance.

Greg N | HVAC Maintenance

Sergio (along with Rich) came out to my house to perform a maintenance checkup of my heating/air conditioning system. I feel they did a very thorough and professional job. They made a few recommendations which I plan to follow up on.

Thomas E | HVAC Maintenance

Customer's Name: Patsy W
Service Professional(s): Michael K.
Star Rating: 5

Customer Comments:
Excellent Service! Will recommend your company and will be ordering more service from you in the near future!

Customer's Name: A Richard C
Service Professional(s): Don M.
Star Rating: 5

Customer Comments:
Don: Is a superb representative for Stewart Heating, Thoroughly professional and knows what he is doing, good personality, friendly and kind, I always ask for him for any work that needs to be done in my residence, Recommend him highly.

Customer's Name: Shirley K.
Service Professional(s): Rich L.,Sergio R
Star Rating: 5

Customer Comments:
Rich and Sergio did a fantastic job of regular maintenance and spent extra time checking out my A/C unit and ducts in the attic. They found numerous leaks and gave me an estimate to fix the leaks. They were courteous and thorough. I also had Stewart's plumber drain my water heater and replace the anode, which was corroded. I highly recommend Stewart Heating Plumbing and Air Conditioning!!

Thank you!

Customer's Name: Howard C.
Service Professional(s): Rich L.,Sergio R
Star Rating: 5

Customer Comments:
Both technicians came to our house today to provide 30 pt.furnace preventative inspection with repair recommendations. They were pleasant, polite and knowledgeable. They clearly explained their findings and recommendations with the different options which are available.

Thank you!

Customer's Name: Dianne O
Service Professional(s): Tom E.,Jamie J.
Star Rating: 5

Customer Comments:
My techs today were Tom E. and Jamie J. They arrived at the time specified, were extremely knowledgable , courteous and finished the job in a timely manner. Would recommend both to my friends. My thanks to them for a job well done

Thank you!

Jeff Garcia at Stewart Heating and Air did a wonderful job! He is 90% done with our job. He will be coming back in 1 more week to install a key valve in our fire pit, but other than that, he has completed our job. He did great work, was on time and spent a lot of extra time making sure that everything was done correctly. Part of our cost was also the permit fee which we passed the first inspection so far. Jeff is wonderful about working with you on your budget. He will let you know what you may be able to do as the homeowner to try and cut your costs and then what you need to do with him. He is very honest and does great work. I really can't say enough good things about him. He is also a genuinely wonderful human being that does a lot of work with his church. I HIGHLY recommend him to everyone!
— Sean C., Danville, CA

I ran a call on Sunday for Roy A. for a water leak on his AC unit, when I got there I asked the usual how he heard about our company & also why he chose to use Stewart, he told me it was because he had called other companies & they were either voice recordings or sounded incompetent, then he said when he talked to Kathy on the phone she sounded very professional & knew exactly what she was talking about, he said she represented the company very professionally & he knew immediately Stewart was the type of company he would want to do business with us, he was also impressed with our fast response & service.

Once again Don Mc Kinzie serviced our air conditioner and i'm pleased to write he is as efficient, polite and friendly as ever.
— Pete & Anita H.

Stewart Heating and Air were professional, timely and responsive to all my questions. Staci spent hours with us going over PG&E's Energy Upgrade program and helped us decide what improvements we needed to obtain the best rebate for money spent. She handled all the rebate paperwork required and contacted Energy to perform the test in and test out home audits. Gloria scheduled the work and contacted me when the crew were set to arrive. Yancy and Jason installed the equipment and sealed and wrapped the ducts in two days (they were scheduled for three). They were polite, efficient and relatively quiet considering the job they were doing. Bill Stewart came with Stephen from Energy to help with the test out. Our furnace and ducts leakage fell dramatically from 31% to under 3%. We were shooting for 10%! Fantastic! Feeling toasty and warm now that the heat stays in our home.
— Barbara C.

Walter M. from Concord called on saturday 1/4 for some help with his thermostat. Don called the customer and helped him over the phone. The customer has raving reviews about Don. " Need to buy that guy lunch. He helped me out, and Don told me how to hook up my thermostat over the phone. He is a very large asset to the company, and since you have employees like him, I will never go to anyone else for my air conditioning or heating needs. Don is a great reflection of the company and I want him to be recognized!"
— Happy Call from Walter M.

Needed help with thermostat. Don called the customer and helped him over the phone. The customer has raving reviews about Don. " Need to buy that guy lunch. He helped me out, and Don told me how to hook up my thermostat over the phone. He is a very large asset to the company, and since you have employees like him, I will never go to anyone else for my air conditioning or heating needs. Don is a great reflection of the company and I want him to be recognized!"
— Walter M. - Concord, CA

Yancy and Tommy installed a new furnace plus new ducts throughout my 100-year old house. They were professional and clearly competent. Yancy was so helpful navigating and explaining the pitfalls, including a slightly incomplete-inaccurate quote. I feel I can recommend this company and especially Yancy and Tommy without reservation.
— Jeri E

We recently had our heater serviced by Don McKinzie and wanted to share our pleasure with the experience. He was very punctual, professional, and informative and would not hesitate to recommend him for future work. Please tell him how pleased we were with his service, Happy holidays!
— Ray Nagai

We had 2 men Yancy and Tommy install our ducts under our home . They were very professional and courteous . Kathy was the young lady we spoke to do all the confirmations and she was always very helpful . We were extremely pleased with the work and service we received.
Very truly Joe And Pat O., Alamo, CA

Stewart provided a very competitive "Turnkey Solution" that no other vendor could match. Bill Stewart coordinated all activities for our home energy efficiency project making it very easy for us. I would highly recommend Stewart for any HVAC or energy efficiency project as they deliver excellent results with the highest integrity from start to finish!!
— Tim M.

Yancy and Tom from Stewart Heating and Air did a great job installing our new ductwork and electronic filter. They arrived on time, explained what they would do, and did the work with minimum effect on our usual routines. At my request, they fashioned and installed a metal piece covering an existing gap around the vent pipe. When they were done, they cleaned everything up and explained the new filter very clearly. I'd be very happy to have these guys work on my house again.
— Gerry D, Antioch, CA

Customer's Name: Phyllis J
Service Specialist: Jamie J.
Customer Comments:Jamie came to give check up on our furnace (as we get ready for winter). He was awesome!!! Friendly, knowledgeable, and provided information to help with our needs as well as our safety. Thank you , Jamie.

Jamie Jensen did an extremely thorough & professional job of checking our furnace unit. He was knowledgable about the equipment and listened to our concerns & questions appropriately. We will have no hesitation in recommending him & Stewart Heating & Air Inc. to any one interested.
— Sam V.

I am very pleased with every aspect of work Yancy did, also the trainee Tommy.
— Anita H.

Jim W. from Walnut Creek praises Don for a positive furnace maintenance experience.

Always great to see Ron. He is so professional in checking out our system. We have great confidence in the service.
Thanks. Pat & William M. - Concord, CA

Your service technician Jamie did a great job performing our fall furnace tune up.
Dennis A. - Walnut Creek, CA

Mary M. from Pacheco, CA called our office to let us know both Bert & Jamie are Super Great representatives of Stewart Heating and Air.

Roberta M. from Alamo, CA called to let us know what a great employee Don is, She loves his work and will continue to do business with Stewart Heating & Air.

Just wanted to say thank you for the excellent work your company performed installing our new heating & air system. Our family has used your services over the years. Your work is always satisfactory.
The Wagner's

They showed up on labor day weekend at 7pm, diagnosed the fault, fixed it and showed awesome ingenuity, dedication and zeal. A 5 star operation at a good price.
Roxanne S.

Kudos for prompt response. At 7pm on Friday evening labor day weekend a service technician arrived at my home 45 minutes after I had called in my trouble. My air conditioning was sending out heat. Initially the technician thought there was a problem with an electronic zone board and I would have to wait until the next week for the board to be replaced. He was concerned that I would be without air conditioning for several days. The technician spent two hours continuing to trouble shoot and ultimately discovered a loose wire. I was blessed with air conditioning on a hot holiday weekend.
The Stallings

Dear Mr. Stewart:

During the recent hot spell our air conditioning unit was not doing much of anythings Being a Comfort Club Member I called your company for help. Don (last name ?) responded. He had serviced this unit last year as well and had given me notice that things were not really good! His April 29th visit (this year) confirmed that. Don nicely offered the choices to be made and set in motion the ultimate purchase of a Bryant 187B air conditioner. Don's manner of discussing options is commendable and confidence building. Thanks Don.

Kevin and Gus installed the unit Friday and it was a great day in our households Cool air! It's always a pleasure to see people work who know what they are doing, and Mr. Stewart you should be proud to have these folks in your company. They were most cordial, glad to answer questions and good workers. Thanks Kevin and Gus.

A pleased customer,
John H. Chappell - Walnut Creek, CA

Hello Sheila,

I'm shooting off this email to let you know that I received the check and a little something extra - Starbucks Gift Card. What a nice surprise!

Thank you for all of the time you spent helping me with the rebates and answering my questions (while remaining cool and calm at all times). I couldn't have done it without your assistance. Stewart Heating doesn't know what a GEM of an employee they have in you. You're AWESOME to work with and I really mean that. I don't give compliments unless I mean them.

Thanks and take care.
Sandra - San Francisco, CA

Dear Bill,

Thank you for replacing those stolen fuses at no charge. I am most thankful.

I want to thank Jamie and Don. They are helpful and professions, as was the person who answered the phone -even on a weekend!

Thank you so much.

Susan E.

"Bill Stewart and Staci D came to give me a quote and scope out the project....they were very friendly and informative and did a great job of quoting the job in a manor that made it affordable for me. They let me do some of the prep work to shave a few bucks off of the job. Kevin and Gus were the best. They came prepared for any and all obstacles. When one of the spaces to pass the duct through was too small they brought out the roto-hammer and were able to get everything done. I would recommend this company to all of my friends."

Bill B. - View on Facebook

Jamie got a happy call from one of our customers, Carl Gribble. Carl called to say that he "appreciated the service and Jamie did a wonderful job" taking care of him. Carl currently rents his home, but he told the landlord about our company and will be referring Stewart to others as well.

Don is a hell of a nice guy. He was clean, quiet, and efficient and did a very, very good job.

Ralph Netzer - Brentwood, CA

Hi Bill,

Thanks so much for all the time your guys spend keeping things fixed and in great working order for us. When we want things "done right" Stewart Heating and Air are the "ONLY" ones to call!! I'm so glad to be able to say to friends when they have an air condition or heating problem to call you crow. They are there when they say they'll be there and no "half way done'' so they can keep coming back for more money. Also no "potty mouth" talk on the job. They are very respectful and professional. Thank you for your high standards!

God Bless,

"Thank you for the fine work by you and your crew...I look forward to working with you in the future."

— Rex Takahashi | Read the full review

"Dave and Mary Ann McDonald called to say that Don was very professional, polite and just a great service tech. They were very comfortable with him in their home and wanted the owner of the company to know what a great tech he is."

— Mary Ann and Dave McDonald - Orinda, CA

"I was very happy with your technician who came yesterday. His name was Don, and he answered all of my questions with extreme patience and thoroughness. He explained Co2 and installed an alarm. My neighbor is looking for a new furnace, and I will definitely recommend your company!"

— John Hunt, Martinez, CA

"Thanks so much for all the time your guys spent keeping things fixed and in working order for us. When we want things "done right", Stewart Heating and Air are the "ONLY" ones to call!! I'm so glad to be able to say to friends when they have a air conditioning or heating problem to call your crew. They are there when they say they'll be there and no "half way done" so they can keep coming back for more money. Also no "potty mouth" talk on the job. Their very respectful and professional. Thank you for your HIGH STANDARDS!"

— God Bless, Janelle

"Before the year is out, I want to thank you for your courtesy in honoring the warranty for the recent repairs on my downstairs furnace air supply, and on my upstairs AC-coil condensate drain system. Your technicians..."

— Paul Mikolaj | Read the full review

"First of all, thank you for t he fast response to Bob Cupid's request on my behalf regarding my furnace. Jamie could not have been nicer. He was very helpful and a pleasure to have in my home..."

— Ann DeVries | Read the full review

"Stewart Heating and Air Duct Crew: Thanks for doing a great job on installing my new air ducts. The house warms up super fast. Thanks for keeping the house clean and being very careful during installation."

— Gil A. - Concord, CA

"Please pass along to your troops how satisfied we are with the quality of the job they did clearing out our duct system and installing the new one. Everyone impressed us with their obvious desire to see that the job was done correctly.

As you know, we were disappointed in the quality of the work done by One Hour Heating and Cooling who installed our furnace. The thorough work that was done by you and your people earned our appreciation that the system is now functioning properly. We have been able to shorten the time the furnace runs each morning, which means a lower PG&E bill .

Thanks again to your troops and to you for your supervision of the many details of the job."

Best wishes,
— Chuck and Yoshi H. - Alamo, CA

"Stewart Heating and Air is an excellent company. We have used them for many years and they have always been great! They have a courteous, professional and knowledgable staff. I highly recommend them."
— Tammy

"I called Stewart Heating & A/C this morning for service because our air conditioner wasn't working. They scheduled the appointment for Noon-2 pm and their technician showed up promptly at 12:15. He explained the problem and the solution, and finished the repairs within an hour. I thought he did a great job."
— Steve H.
NATE Certified Contractors
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