Excellent Heating & Air Services Since 1986

We Are The #1 HVAC Kennesaw, GA Heating and Air Choice.

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 and 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.

Best HVAC Company Kennesaw, GA
bryant medal of excellence logo
Google Rating
Based on 102 reviews
Facebook Rating
Based on 14 reviews

Heating & AC Repairs
Best HVAC Company Kennesaw, GA

We repair all makes & models of heating & air systems.

Heating & AC Maintenance

Planned maintenance can help save you money.

HVAC Installations

We are a Bryant Factory Authorized Dealer!

Financing Options

wells fargo financing banner

HVAC Financing Kennesaw GA

Click above to make a payment or apply for Payzer Financing

Recent Facebook Reviews

Excellent service. Was done faster than expected and pricing was reasonable. Highly recommend!
Phil Cannizzaro
15:26 08 Jun 20
So happy we chose McKeon!! Bob was awesome and was very knowledgeable about our old system. Jacob and Brian made the installation go so smoothly! highly recommend this awesome firm.
Jane Naystatt Poster
21:56 02 Jun 20
Thanks for the quick turnaround and getting my AC back up and running. I’mA customer for life! I highly suggest calling Mckeon for HVAC needs.
Brian Babyak
00:38 30 May 19
The professionalism of D McKeown heating and air is unquestionable. After making a decision to use this service company a year ago I have never been disappointed in their customer service. If you are shopping around for an HVAC company, I don’t think you could possibly not consider using D McKeon.
Reggie Martin
03:24 13 Oct 18
Fantastic company! Our for ace dies New Year's Eve a d we already habe a replacemet. Clean, kind and cost effective. Will used for all our future needs!
I have used McKeon for over 15 years and they are very reliable and have always given me great service.
Excellent service and people that really care. I have used D. McKeon for over 20 years now. My 16 year old air conditioner was on its last leg and they installed a new one for me as soon as possible. I will always recommend Dennis and his staff. Thanks to all for helping me out. You are the best.
Beth Hilgert Liotta
16:22 08 Sep 16
Always excellent service and reliable! Thank you for coming out last week, after hours, to make sure our A/C got fixed right away and we wouldn't have to suffer in the heat!
Sue Loftus McBride
19:30 19 Jul 16
Excellent company that gives personalized care. They go above and beyond when you have an issue rather than run like some companies. We bought 2 units from them and had unfortunate issue with install of one causing leak and damage. Bob and staff went beyond to get everything back to normal as fast as possible. Mr. Mckeon even came to our home himself for initial consult and was incredibly nice and attentive. To top it off, when they learned we were Cubs fans, they went out of their way to get us great seats to the CUBS vs BRAVES game! Special thanks to Mr. Mckeon and Bob for these tickets!! It made a great family memory for us!. The entire staff makes you feel like family!
Rita Neitzel Tafelski
15:40 19 Jun 16
Tracey Floyd Viars
13:30 16 Jul 13

Why Choose Us?

Serving homeowners & business since 1986. We are the team to trust!

Kennesaw Heating and Air Company

24 hour emergency services

Kennesaw Heating and Air Company

trustworthy team

Kennesaw Heating and Air Company

highly rated company

Kennesaw Heating and Air Company

free replacement estimates

Kennesaw Heating and Air Company

highly trained technicians

Kennesaw Heating and Air Company

33 years in business

Kennesaw Heating and Air Company

family owned and operated

Kennesaw Heating and Air Company

drug tested employees

Our Recent Google Reviews

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
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
joel rago
20:53 26 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!
Antonia DeCarlo
19:05 12 Nov 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!!
Alec Jones
15:01 12 Oct 21
Rosemary Pastula
12:30 22 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.
Ken Wyett
16:03 15 Sep 21
Wayne Cruse
13:00 30 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!
Luis Guasch
22:00 07 Jun 21
Victor Fishman
20:55 02 Nov 20

Our Recent Advice Articles

HVAC Zone System

HVAC Zone System- Comfort is Key Most homeowners can agree—comfort in one’s home is dictated by the temperature. Cold homes in the winter are frowned upon, while cold homes in the summer are requested. An inefficient HVAC system, or a house divided over the thermostat, can benefit from an HVAC zone system. Do you ever…

Read More

HVAC Kennesaw GA

Heat Pump Benefits

Heat Pumps Will Keep You Comfortable Year-Round Heat pumps are the ideal choice for bringing comfort to your home through an electric energy source instead of gas. Your home is ensured to be warmed during our upcoming cold winter months and cooled during those hot summer months. This energy-efficient alternative is ideal for climates like…

Read More

bryant full hvac system

Time To Upgrade Your Thermostat?

Looking for an upgrade to a Smart Thermostat? One of the most popular upgrades in the HVAC world is a programmable thermostat. Living in a society full of smart phones, smart tablets, and smart cars is our new normal. It only makes sense that smart thermostats are making a debut. Many question the need for…

Read More

Licensed and Certified HVAC Kennesaw, GA

Kennesaw Heating and Air Company
Kennesaw Heating and Air Company
Kennesaw Heating and Air Company
Kennesaw Heating and Air Company

Our satisfied customers:

Frequently Asked Heating and Air Questions

How Do You Know When Your AC Needs To Be Replaced?
Is It Necessary To Service AC Every Year?
How Much Does It Cost To Replace A Central Air Conditioning Unit?
What Maintenance Does An Air Conditioner Need?
Why Is My AC Running But Not Cooling?

Why Choose D. McKeon Heating & Air?

Best HVAC Company Kennesaw, GA

Quality HVAC Kennesaw, GA

Top HVAC Repair Kennesaw

Top Rated AC Repair Kennesaw

Heating and Air Kennesaw, GA Experts

#1 AC Repair Kennesaw, GA

Air Conditioning Service Marietta, GA Experts

Best HVAC Contractors Marietta, GA

Top-Rated AC Service Marietta, GA

Best AC Repair Acworth, GA

#1 HVAC Service Marietta