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J & K Air Conditioning & Heating J & K Air Conditioning services all of Montgomery County Maryland from our Gaithersburg MD location including Clarksburg, Bethesda, Chevy Chase, Damascus, Hyattstown, Comus, Germantown, Rockville, Kensington, Olney, Potomac, Silver Spring, Takoma Park, Wheaton and Urbana, Ijamsville, Monrovia, New Market, Buckeystown & Adamstown in Frederick, Maryland.

We service all of Prince Georges and Frederick Counties in MD and Fairfax County in VA. For new installations, we supply Carrier and Lennox products for all of your air conditioning and heating requirements.
Services
Air purifiers are an invaluable tool for combatting airborne odors, mold, germs, and other allergens. Fresh-Aire UV's APCO line of air purifiers use a unique combination of UVC light and activated carbon cells to clean air in just a few hours of operation, as shown in lab studies. We install a range of sizes and types of purifiers, perfect for either the home or a larger commercial space.
J&K Air Conditioning LLC provides the highest quality air conditioning and heating installation and repair services to residents in Clarksburg, Maryland. We service homes, condos, townhomes, and apartments as well as commercial facilities. At J&K Air Conditioning and Heating, we are proud of our ongoing commitment to provide residents and businesses of Clarksburg MD with excellent customer service and support. We give free equipment estimates, and our new equipment installation includes a 10-year parts warranty.
Reviews (18)
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Jeffrey Stough
Sep 22, 2021
Outstanding service - quick response, friendly, expertly diagnosed problem and completed repair at a great price despite extremely hot conditions and high demand. Highly recommend! Services: A/C system repair, Repair HVAC
Jane W.
Sep 07, 2021
They replaced both my hot water heater and hvac and did an exceptional job with a very fair price!
Brandon B.
Aug 19, 2020
Tony was excellent! I am also a home inspector so I have some HVAC knowledge. He followed the covid-19 protocols. He found the problem quickly and resolved it. Didn't try to sell a new unit, it's older from 2000 so it's getting up there age wise. Price was on point. I would recommend Tony and this company for any service call needed for heating and cooling. Pro's!
Leonid Gibiansky
May 18, 2020
J & K Air Conditioning & Heating services my AC/heating system for the last 10 years or so. Very professional, they come the same or the next day (depending on the urgency) and offer quality service at reasonable prices. They just replaced my AC/heating system with the new one, and all was done within a week of the first contact, offered detailed advice and help with energy rebates. All interactions were easy and pleasant. Highly recommend this company for all cooling-heating problems.
Theresa Holston
Feb 08, 2020
Thank you to J&K for being honest, reliable and quick about helping us in our time of need. They have wonderful customer service and offer great rebates as well as affordable maintenance programs!
Chantal P.
Aug 15, 2019
I called this company for a rental property. I selected them based on google reviews from clients that highlighted the repairs done on their AC unit by J&K in lieu of AC replacement done by other companies. My preference is a company that is willing to repair and not so quick to replace. They did just that. Kyle showed up at my place and was very personable and flexible. He quickly diagnosed the issue with the AC and was there for maybe 15 minutes (assessment and repair). Done! Happy tenant, happy landlord!
Peggy Meyerer
May 16, 2019
Kyle has been actively taking care of our heating and air conditioning for over 10 years and we couldn't be more satisfied. He's kept everything in tip top working order.
Erica Johnson
May 12, 2019
First of all, when I called for a quote, they said 90 something dollars for the first thirty minutes, then thirty dollars for each additional 15 minutes. Really?! Being desperate regardless, I made an appointment. You would think for charging astronomical prices that they would show up and collect all that money. but nooooo! No one showed up or even called with the courtesy that they wasn't coming. I could have called someone else to help me. I had to go through another day and night suffering in the heat and I'm sick with MS. Very unprofessional, I wouldn't recommend.
Jerry Flannagan
Mar 28, 2019
Very knowledgeable and courteous. Found the problem right away and did not try to sell like the last company we used. I highly recommend this company
Joe McGreal
Dec 14, 2018
Great company. Called in a problem at 8am and Kyle was onsite before noon. Problem fixed in less than 30 minutes and VERY reasonably priced.
O. J.
Aug 16, 2018
Upon a recommendation from a friend, I tried J&K and was thrilled at the through service and professional work that was done. They wrote in detail what they did and spent much time making sure everything was in order.
Mark Friedman
Jun 21, 2018
Very responsive and professional. I had both my AC and Heat replaced. They gave me a great price and so far very happy with the product. Would definitely use again.
K. C.
May 10, 2018
Wow! What can I say about J&K? We have been using their services for almost fifteen years. They changed out our old heater for a Carrier about ten years ago. Never had an issue. Great deal, too. Then, they kept our thirty year-old central A/C unit running smooth for years, until finally upgrading us to a nice big Lennox. Kyle has done most of the service and installation himself. You couldn't ask for a nicer, or more knowledgeable, guy. We wouldn't go anywhere else for our HVAC needs. Great family business!
Nick Pallotta
Jan 29, 2018
Great customer service! AC stopped working and they came out the same day to fix it. When it stopped working again they didn't hesitate to return after 5pm to get it running! Couldn't ask for better service! Update: 2 years later, AC has continued to work without issue.
Michael K.
Dec 06, 2017
You can't do any better than Kyle and his crews. Honest and very reliable. We have used them for years.
Yoav Palatnik
May 15, 2016
A/C unit went kaput on first really hot day of the season. Kyle ( The K in J&K) was super responsive, very helpful, and solve the problem quickly. I am now a chillin' & happy customer. Also, very reasonable price (at least compared with others in the area), and nice friendly response from J&K office person. We recently moved here from NY, and these guys are now my go-to for HVAC issues.
Jae A.
Jul 09, 2015
Horrible place to get a new AC unit. Purchased top of the line AC unit few years ago only to have issues throughout the years. They provided a 5 year warranty on the item. I called to have them checked out. Apparently nothing was wrong and they billed me $100.00 without ever mentioning that. They also would leave things out knowing, more work will be needed in the future. Stay away!
Barry H.
Mar 07, 2015
Installers damaged my personal property.acknowledged they damaged property, refused despite repeated requests to repair damage created by installers. PLEASE stay away, so many better choices in our area.