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Since 1986 -
Complete Comfort!We are Dependable & Trustworthy!
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Tune-Up Special $891ST HVAC SYSTEM -
HVAC System Installs & Replacements -
Need Appointment?CONTACT D. MCKEON TODAY!
Excellent Heating & Air Services Since 1986.
We are your #1 Kennesaw heating and Air Company
Serving Homeowners & Business In The Following Cities:
Acworth | Dallas | East Cobb | Hiram | Holly Springs | Kennesaw | Marietta | Powder Springs | Woodstock
Expert HVAC Kennesaw, GA
D McKeon Heating & Air Conditioning has been the most trusted heating & AC company since 1986. We’re a family-owned and operated company that is fully licensed, insured, and certified.
Medal of Excellence Award Winner 2020. This is a special award that we received from Bryant. We are one of the top 21 Bryant Factory Authorized Dealers from over 33,000 Bryant HVAC Dealers in North America that has won this prestigious Medal of Excellence Award.
Google Rating
4.8
Based on 109 reviews
D. McKeon Heating & Air Conditioning
4.8
Judy Conley
19:00 15 Mar 23
I highly recommend McKeon. They were professional and did an awesome job. They are experienced in this profession for many years and know what they are doing. The job was done quickly and properly. Would definitely recommend them.
Kendrick Jenkins
18:22 24 Oct 22
If I could give this business zero stars, I would. We scheduled to have a technician come out to troubleshoot our unit for an issue we encountered. The day of I called to confirm the appointment and was informed that our appointment was removed from the schedule. I never informed this business to cancel the appointment and this business never informed me they were canceling the appointment. I requested to have the matter escalated and was transferred to Bob and that’s when the conversation went downhill. Bob is very rude to customers, does not care to hear your concerns and definitely lacks customer service skills, which is essential to sustaining a business. This company never accepted fault for removing my appointment from the schedule. Save yourself some time and call Ragsdale Heating, Air & Plumbing. I had such a pleasant experience with them and a same day appointment was scheduled.
Megan Amodio
18:50 10 Oct 22
We have had issues with the AC at our office. Unfortunately it has not been a simple fix. There have been quite a few issues with this company. FIRST AND FOREMOST BEING THE RUDENESS AND UNPROFESSIONAL CONDUCT by the tech that showed up. BOB was beyond rude, rolled his eyes, raised his voice, got a major uncalled for attitude and was anything but helpful. He contradicted himself as to if he could give an estimate on how long the service would take. Then got upset because he had to wait at 3pm the other day since we were not here" . The reason actually being that service was scheduled for 10am that day and no one came and no one called to cancel or reschedule. So we had waited and waited.Bob should not be working in a position where he interacts with guests and we have requested he no longer be the rep who services our office. He was the rudest person I have ever met who is representing a company. Unfortunately our landlord has an account here or we would take our business elsewhere. Hoping we can convince our landlord to set an account up for his buildings with a different company, where they value their customers and are at least polite and respectful of their time.
P M
07:20 14 Sep 22
Repeatedly sent out people who were not technicians. Didn't divulge that they were not authorized Lennox service providers. Incompetent but apologetic. Still did not refund money received when AC still doesn't work.
Darrell Emerick
16:40 06 Sep 22
We recently had our AC/Heating system replaced by your company. Bob Best did the presentation and signed us up for the installation. He did an excellent presentation, explaining the heating and the cooling systems, and offered a diverse range of system types and options, with a variety of prices. He also went over the financing options for the different systems. He did an excellent job throughout the installation and answered all of our questions. The crew that did the work was also very good. They were at our home on time, were courteous, cleaned up and did a proper installation. We requested some duct modifications be made after the installation and Bob and the crew came back and did a great job.We highly recommend Bob and your company to anyone looking to replace their AC/Heating systems. Over the years, this is the fourth time we have had the system replaced and Bob has been the best in every way. He is very knowledgeable about the systems, has hands on experience, which is invaluable and treated us like family. He was not just another salesman selling the product. He has been there for us.
Jose Torres
19:03 28 Jul 22
Great customer service. Laurie and Preston patiently walked me through any troubleshooting ideas before scheduling service. Much appreciated 👍.
roger brainard
21:54 23 Feb 22
My furnace quit heating on a Friday night. not a true emergency as the downstairs unit was keeping the temp livable. I call and left a message and was called back in just a few minutes. the tech very patiently and politely walked me through a few things to try. And gave me an option for service now or wait til Monday (which is what i did). I received a call Monday at just past 8AM. again very friendly and polite and a tech came out by noon. I felt like i was given very good info by the tech and we determined that the 20 year old system was better replaced than repaired. On Wed They came out ON TIME again and installed. a good looking job and the 2 service men were, again, very polite and had the furnace swapped in 3 hours. At which point the Service manager and the original tech came out and examined the install and commissioned the furnace .. then helped walk through programming the new 'smart' t--stat.. they also installed a CO2 alarm and left a couple filters ... all in all I am very happy with the whole transaction .. Highly recommend
Gloria Jartos
17:40 11 Jan 22
Had no heat on one of the coldest nights of the year .. called McKeon Friday morning and they came out before noon. The serviceman knew exactly what was wrong, put in a new capacitor and changed the filters. He explained everything to me and showed me what he did and why.. and explained just how the unit works. I was amazed he took such care to explain everything! Thank you Preston you deserve an award for your excellence. I will always call on this company if I should ever need to, I can trust that they will do an excellent job at a very fair price !
joel rago
20:53 26 Nov 21
Very prompt very professional I couldn't have asked or expected better service than I received from McKeon heating and airThe service tech was knowledgeable and got the job done
Antonia DeCarlo
19:05 12 Nov 21
Most professional company I've dealt with in a while. I needed my HVAC units inspected ASAP due to selling of my house. Shannon was very helpful in answering all my questions and getting a tech out immediately.Preston came to the house, serviced and made minor repairs the same day He also went above and beyond spoking to the buyers answering theirconcerns as well. Can't say enough about the wonderful experience I had dealing with D. McKeon Electrical!Thank you Shannon and Preston!
Alec Jones
15:01 12 Oct 21
So happy to have found this company. New furnaced installation was perfect with one little blip which they took care of first thing next morning. Family owned and operated and it shows. Great people!!
Ken Wyett
16:03 15 Sep 21
D. McKeon Heating and Air is an excellent choice if you’re needing a repair or looking to replace your HVAC system. Great service and follow-up, their HVAC techs are extremely knowledgeable and courteous. We had both our upstairs and downstairs systems replaced, and right now HVAC equipment is in short supply. D. McKeon Heating and Air went out of their way to locate the equipment needed for the replacement of our systems.
Luis Guasch
22:00 07 Jun 21
Preston the tech that came out was great. He found a hard to find freon leak during a PM maintenance! They are always great (D McKeon) but Preston was exceptional!
B T (zzyzxman)
17:05 18 Sep 20
My review is sort of mixed here. After extensive research to have an evaporator coil replaced including labor freon parts etc... D. McKeon was by far the most expensive of 5 different HVAC companies @ $2,500 to replace an evap coil. Thats minimum $700 more for the same work, and i have done my research(you would think returning customers would at least get some type of break). I have used DMckeon for maintanence and tune ups and they do decent work, but good grief thats pricey as heck, and other HVAC companies thought so as well. Anyway, do your research as i did and am able to purchase the coil for about $600 and will have it installed by an old Army buddy I served with in the middle east, an HVAC tech, for free. Should not cost that much. DO YOUR RESEARCH AND GET LOTS OF QUOTES!
Kim Lorton
18:16 21 Aug 20
We have been long time customers and like them really well!We usually have Preston, but Kevin came today and he is great also.
Britt Pearce
23:48 20 Aug 20
Responded very quickly. Found the problem in a short time and able to make repair on the spot. Tested system before leaving. Very pleased with office help and technician service.
Candy Callas
16:38 18 Aug 20
When our old AC went out on a hot Saturday night in August, we thought it would take forever to get relief. To our surprise, McKeon came out Sunday morning, made interim repairs to get us through and installed a new system three days later! On the day of the install, their supplier ran into a problem and didn't have the unit we ordered - so McKeon actually upgraded us to a top of the line model for the same price! We have never had such stellar customer service! The people are knowledgeable, friendly, great to work with and the new AC is incredible - quiet, highly efficient, works like a charm. We recommend highly!
Charlotte Marie
12:57 04 Aug 20
D. McKeon Heating & Air Conditioning has been my HVAC expert of choice for almost 20 years. I have a twice yearly maintenance contract with McKeon and am happy to say my HVAC is still working - thanks to the excellent service this company provides. The staff at McKeon always goes above and beyond the call of duty.
Cynical Citizen
18:40 21 Jul 20
Preston, the tech McKeon sent to my house was very professional, personable, capable and thorough.I will use McKeon in the future based on his performance.
Steven Howard
15:17 09 Jun 20
The technician was prompt and efficient. Gave us some great tipst keep our system running the best way possible.
Phil Cannizzaro
15:25 08 Jun 20
Excellent service. Was done faster than expected and pricing was reasonable. Highly recommend!
Ellen K.
00:57 29 May 20
Excellent customer service, knowledgeable service specialist, great value — professional all the way. Highly recommend.
Eric Pearson
15:09 19 May 20
McKeon has been our preferred service provider for many years. Their personnel know their trade and do not leave the job without ensuring that every issue has been addressed. In almost all cases, they have taken actions that were not precisely part of the job, but made the system more reliable than it was prior to the service.
Jim Murphy
15:51 18 May 20
The McKeon service was extremely responsive and professional. My cooling process resolved in one afternoon.
Cornerstone Digital Printing
16:32 14 May 20
Great company, super nice and knowledgeable staff, great prices and always on time. What else could you ask for? I use D McKeon for my businesses and home and wouldn't consider anyone else.
Randy Russell
14:45 20 Apr 20
We have used D. MCKeon for 8+ years. They have always been professional and trustworthy. B. Best and the rest of the staff are top notch, I highly recommend them for anyone that is looking for good quality work at a fair price.
Harold Noll
18:35 16 Apr 20
From front office to service techs, I have found this group 5 star in each category.... Crystal, Preston and Kevin.
Phyllis L. Seitz
13:07 12 Apr 20
I have done business with McKeon since 2008,And they have never let me down! They kept my HVAC system running optimally!
Todd Lee
20:21 06 Apr 20
Very good, honest service. They don't try to offer you products/services that you don't need.
Richard Sullivan
21:43 17 Mar 20
There couldn't be nicer and more knowledgeable people in the HVAC business than D McKeon. Thank you guys and Bob.
donald mikolasy
17:26 06 Mar 20
Kevin from D. McKeon is the best.....knowledgeable, hard working, and very personable....a real pro who knows his stuff!
Martha Reed
20:11 19 Feb 20
Pleasant and punctual. My systems are well maintained at a reasonable price.
Laura Wilmot
15:43 18 Feb 20
Fast friendly service. Fair prices. I've used them for years. Highly recommend
Mark Saperstein
21:34 10 Feb 20
The gentleman who does our regular maintenance and repairs is always punctual, professional, and clearly explains what needs to be done in a manner I can understand. I’m happy to recommend D. McKeon Heating and Air to friends, family, and anyone else in need of this kind of service.
Julie R.
00:31 31 Jan 20
My initial introduction to this great company was with Bob who did my quote for me. Bob is not only extremely helpful and knowledgeable, but he is friendly and very easy to talk to. They were able to schedule me when I needed, which was right away. The installers were the bonus here. Jacob is a highly trained and skilled professional. I am positive this company sees the value in their best employees as they have been there a long time and speak very highly of it themselves. Thank you Bob, Jacob and team for doing such a great job. We will never use another company!!
Mark Ryan
18:06 21 Jan 20
The team at D. McKeon is excellent - top notch in all areas of Sales & Specifications, Installation, and Service.
Brittany Garrett
18:05 21 Jan 20
It hit 27° and of course our heat went out leaving us in a 55° and dropping house. I called D. McKeon because they had 5 stars (which we now know why) and were really close to us in Kennesaw. They were able to get to us within an hour and the technician who came out was quick and informative. He talked us through everything he found gave us helpful suggestions and had the heat back on in a matter of maybe 30 min.After he left my husband said that they would be the people we use from now on. (You don't know my husband but he is VERY hard to impress!) So this was very high praise. We both felt more knowledgeable and informed about our unit and what direction to take in the future.Thank you so much D. Mckeon!
Kimberly Yowell
18:39 15 Jan 20
Great service! We have a maintenance contract with them and we truly appreciate the very detailed service. Preston is the best!
Doug LaVigne
20:23 03 Dec 19
Preston has been working with us for several years and at two houses. He is thorough and helpful.
Michael Boucher
19:16 07 Nov 19
Very courteous and accommodating when scheduling appointments. Service is top notch, thorough and on time. Service provided by Preston is fantastic. No question is too basic as he takes the time to answer questions and point out options. We use them for annual furnace and air conditioning checks as well as ac repair about a year ago. Excellent and I’m sure you’ll be happy if you go with them.
Holly Lacour
18:21 24 Oct 19
After a horrible experience with Reliable Heating and Air (which left us without air conditioning for 5 days during 90° weather) we called D McKeon and had a new unit in less than 24 hours. The customer service provided by Crystal was helpful, calming and knowledgable. Kevin and Bob were amazing in getting the new unit installed right away. Pricing was also a noticeable amount lower than Reliable and we weren't pressured into replacing a working furnace. It's been about a month since our new unit was installed and I'm still so grateful for the care they provided. We are now lifetime customers of McKeon.
Barbara Bowker
12:50 21 Oct 19
I love D. McKeon. It is a company which does great work, and you can have every confidence in them.
Marie Hogan
16:01 18 Oct 19
Preston was here this week and everything checked out just fine.I have appreciated your service since day one and your employees are the reason why. Thank you and see you next time, Marie
Michelle Yeager
15:25 01 Oct 19
Fantastic, fast, trustworthy service! We use them for our home and business. Love the office and the technicians... everyone is knowledgeable and helpful!
Casey Patrick
19:14 18 Sep 19
Great service and very professional staff! Service tech was in & out in 30 mins with an efficient fix and courteous explanation. Not only that, he helped adjust my programmable thermostat to be more efficient for us. Highly recommend D. McKeon!
Gof Abbey
12:19 03 Sep 19
We had used this company several times for repairs so it was a "no brainer" when we were looking for regular service. Always available without upping prices when last minute disasters hit and work with you for earliest possible service date. The fact that they are "just around the corner" helps as well.
Bruce Dalrymple
20:13 23 Aug 19
Been using D. McKeon Heating and AC Service for nearly 30 years. Not once have I had a problem. Service is always complete and all questions are answered. My latest technician (Preston) is absolutely the best. And the Office Lady (Crystal) is exceedingly pleasant. I personally highly recommend this company for your HVAC needs.
Melinda McNeeley
19:35 21 Aug 19
All of the staff at D. McKeon have been very helpful, professional and knowledgeable from the customer service representative, to the service tech and the installation crew. We have had our new heating and AC system for 1 year now and we are very pleased with the results and comfort of the system. We were skeptical about paying the extra money for the upgraded system but, it has made a tremendous difference! With the humidity control system, you would never know that we are in the “dog days of summer” from inside our house. If anyone is riding the fence on whether or not to buy the Bryant Evolution System , it is worth it!
Georgann Toop
16:17 31 Jul 19
Excellent service! Personnel are very professional and efficient at their work!! I ask for Preston each service period as he takes his job very seriously, makes sure my systems are working properly and explains what work was done...I highly recommend this company for your h/ax needs!!
Christy Songster
20:51 23 Jul 19
Preston, our technician, was prompt, professional and thorough. We highly recommend using this company!
William H
16:04 22 Jul 19
After an apparent misunderstanding, Mckeon agreed to refund our service charge and has proven their loyalty and dedication as a customer based establishment and I can continue to recommend their services as a leading HVAC company in our Atlanta market!
Dan Lightner
13:30 07 Jun 19
I have been a loyal D, McKeon customer for over 10 years as well as my sons. They deliver outstanding customer service and best of all really know their stuff. Bob, Preston, and the entire staff are fantastic. Highly recommended.
Roy Adkins
12:53 27 May 19
First they gave me three estimates that the lowest was $11k. Then the next one was $8. Then the last one after they took all the warranties out was $7 and that was after almost a week back and forth negotiations. Finally fed up with McKean, I called a newer company in they area, they actually checked out my system for free, and their quote was under $5k full warranties included.
Donna Frankovsky
15:08 07 Feb 19
We have been customers for 20 years and would not use any other HVAC company. Their service and staff are top notch. Customers for life.
Michael Hughes
14:35 28 Aug 18
This company and its employees are true professionals. I found myself in a bad position with a cooling system failure August 2018 in Kennesaw. Under the guidance and leadership of Bob Best, they found me a prompt and affordable solution. They are highly recommended.
John Baldwin
19:41 06 Jun 18
I own a daycare center in Kennesaw, and can not say enough good things about D. McKeon's team. I have 5 units, and over the years I believe that I have had every service tech they have out to my center, and I have met all of the ladies in the office as well stopping by to make payments and different things. Every single person that I have met from there has been consistently helpful, informative and polite.Their prices have always been fair, and everyone from the top down has given honest advice and even steered me away from services that they offer and could have tacked on, that were not necessary. They have been really great with scheduling too, since we are a childcare facility.Again, I can not rate this company and their people highly enough. Even when I mentioned them at the parts store, the guys there have nothing but nice things to say about them.A good name is one of the hardest things in the world to keep and the easiest to lose, and they are doing a great job keeping their name in good standing.
Sheila Rose
14:33 30 May 18
Great company! They installed a new heating & air system with professional service. They always serve you with the best of care to fit your needs.
Christopher Wade
03:02 01 Apr 18
Fantastic experience working with D. McKeon's team. Bob Best was patient in answering all questions, offering his vast knowledge and experience, and personally oversaw the installation of two new HVAC systems tailored to our needs, preferences, and budget. The other members of the installation team, Bob and Kevin, were very professional and performed quality work. Despite facing the stressful scenario of replacing two 25 year old HVAC systems, we were fortunate to choose this company for the job.
Louis Bottino
22:28 28 Feb 18
D McKeon recently replaced a 5 ton HVAC system in our home. After securing two other bids for this work I found McKeon's to be very competitive. Their team completed the work on time and in a very professional manner. I would highly recommend them for any HVAC work.
Danny Orlando
16:50 28 Sep 17
I have been a customer of DMckeon for 20 years and I wouldn't do business with anyone else. They are not just a heating and cooling company. They are building science professionals and their work is beyond reproach.
Shelley Yancey
19:56 21 Sep 17
McKeon supplies first rate service and prices - highly recommend the company!
Dean Charles
14:21 21 Sep 17
Always friendly and quick to respond! I would highly recommend them for replacement systems and regular maintenance agreement. Competitive pricing with EXCEPTIONAL service time and time again!
Alan Judd
04:32 21 Sep 17
A wonderful experience from sales to scheduling to the all important install. Techs were on time, clean and polite. Went about their business in efficent and professional manor.
Melanie Buckshaw
23:58 20 Sep 17
They are honest and dependable. Laurie even went out of her way to find an HVAC person for us at our cabin in Blue Ridge and the reference turned out to be a perfect fit. Thank you!
Kay Joseph
22:48 20 Sep 17
This company is very professional. Focused on great customer service. They are knowledgeable and keep abreast of technology changes. The very best vendor I have ever had for my small business. You are set for your Hvac upkeep if you hire them to take care of it.
Richard Angeli
19:36 19 Sep 17
We have been clients of D. McKeon for many years. Ever since did our first furnace replacement with them and saved money long term by installing a unit with lower BTU and a 2 stage Blower. We have been in our home for 37 years,, upgraded both of our systems twice and redone our upstairs duct work. All this work has been with D. McKeon
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We Are The #1 HVAC Kennesaw, GA Heating and Air Choice.
Why Choose Us For HVAC In Kennesaw, GA?
Serving homeowners & business since 1986. We are the team to trust!
24 hour emergency services
trustworthy team
highly rated company
free replacement estimates
highly trained technicians
33 years in business
family owned and operated
drug tested employees
Our Recent Google Reviews
I highly recommend McKeon. They were professional and did an awesome job. They are experienced in this profession for many years and know what they are doing. The job was done quickly and properly. Would definitely recommend them.
Judy Conley
19:00 15 Mar 23
We recently had our AC/Heating system replaced by your company. Bob Best did the presentation and signed us up for the installation. He did an excellent presentation, explaining the heating and the cooling systems, and offered a diverse range of system types and options, with a variety of prices. He also went over the financing options for the different systems. He did an excellent job throughout the installation and answered all of our questions. The crew that did the work was also very good. They were at our home on time, were courteous, cleaned up and did a proper installation. We requested some duct modifications be made after the installation and Bob and the crew came back and did a great job.We highly recommend Bob and your company to anyone looking to replace their AC/Heating systems. Over the years, this is the fourth time we have had the system replaced and Bob has been the best in every way. He is very knowledgeable about the systems, has hands on experience, which is invaluable and treated us like family. He was not just another salesman selling the product. He has been there for us.
Darrell Emerick
16:40 06 Sep 22
Great customer service. Laurie and Preston patiently walked me through any troubleshooting ideas before scheduling service. Much appreciated 👍.
Jose Torres
19:03 28 Jul 22
Phil Cannizzaro
20:54 29 Mar 22
My furnace quit heating on a Friday night. not a true emergency as the downstairs unit was keeping the temp livable. I call and left a message and was called back in just a few minutes. the tech very patiently and politely walked me through a few things to try. And gave me an option for service now or wait til Monday (which is what i did). I received a call Monday at just past 8AM. again very friendly and polite and a tech came out by noon. I felt like i was given very good info by the tech and we determined that the 20 year old system was better replaced than repaired. On Wed They came out ON TIME again and installed. a good looking job and the 2 service men were, again, very polite and had the furnace swapped in 3 hours. At which point the Service manager and the original tech came out and examined the install and commissioned the furnace .. then helped walk through programming the new 'smart' t--stat.. they also installed a CO2 alarm and left a couple filters ... all in all I am very happy with the whole transaction .. Highly recommend
roger brainard
21:54 23 Feb 22
Had no heat on one of the coldest nights of the year .. called McKeon Friday morning and they came out before noon. The serviceman knew exactly what was wrong, put in a new capacitor and changed the filters. He explained everything to me and showed me what he did and why.. and explained just how the unit works. I was amazed he took such care to explain everything! Thank you Preston you deserve an award for your excellence. I will always call on this company if I should ever need to, I can trust that they will do an excellent job at a very fair price !
Gloria Jartos
17:40 11 Jan 22
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Licensed and Certified HVAC Kennesaw, GA
Our satisfied customers:
0McKeon H&A is reliable, dependable and honest!
— R.K., Kennesaw
1Outstanding in every way!
— T.H., Acworth
2Your company always has responded in a timely manner and has been fantastic!
— J.B., Kennesaw
3Very happy with entire project!
— H.R., Kennesaw
4We could not be more pleased! Thank you to Dennis and all his team!
— GC., Marietta
5Great service and great people!
— P.M., Powder Springs
Frequently Asked Heating and Air Questions
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Why Is My AC Running But Not Cooling?
Best Air Conditioning Repair Kennesaw, GA
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Quality Heating and Air Services Kennesaw, GA
At D. Mckeon Heating and Air we are proud to be your local choice for HVAC needs in Kennesaw, GA. Our experienced technicians put your comfort first. From AC repair to heating system replacement we have you covered. Trust our experience as the #1 HVAC company in Kennesaw! Call our team today to schedule your heating and air appointment.