J & K Air Conditioning

Name: J & K Air Conditioning
Address: 18775 N Frederick Ave #N, Gaithersburg, MD, 20879, US
Telephone: 301-990-0780
Price range: $
Rating: 4.5

18775 N Frederick Ave #N
Gaithersburg, MD 20879 301-990-0780

Checkbook's Top Rating
Quality
Price

110 ratings
93% gave a "superior" overall rating
- Prices 22% lower than average
Compare 182 nearby air-conditioning & heating contractors
"J&K Air Conditioning LLC was quick to respond, easy to deal with, and solved my furnace gas leak..."
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Prices for J & K Air Conditioning

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Consumer Ratings for J & K Air Conditioning — 110 Ratings

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Complaints for J & K Air Conditioning

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Areas Served by J & K Air Conditioning:

Howard Co.
Montgomery Co.
Prince George's Co.

Equipment company services/installs:

Humidifiers
Ductless mini-split systems
Air ducts (sheet metal work)
Oil furnaces
Central air conditioners

Electric furnaces
Gas furnaces
Hot water heating systems
Hot water systems pipes & radiators
Electronic air cleaners

Heat pumps

Consumer Comments for J & K Air Conditioning

Consumer from Washington, DC area
Oct 02, 2026

J&K Air Conditioning LLC was quick to respond, easy to deal with, and solved my furnace gas leak at a price 30% less than the price quoted by another company.

Consumer from LAYTONSVILLE, MD
Jun 10, 2026

What I thought would be an expensive repair, and could easily have been if the contractor had been less honest, turned out to be minimal.

Consumer from ROCKVILLE, MD
Feb 14, 2026

We had an issue with our heat pump running more than usual and auxiliary heat coming on that turned out to be normal for the outside temps combined with our thermostat trying to heat to higher than the set temperature. It was a simple replacement of the thermostat, which I had the technician do. We paid parts and labor, and that included $250 for the thermostat. All this was excellent. The problem was when I later looked up the retail price of the model, which is $60-75. I was surprised by the mark-up so I called the office and asked them about the large difference. I told them I expected some markup but not 3-4X. They said they had competitive prices and that the markup was reasonable and we left it there. It's hard to believe that, I guess I would shop around before I used them again for anything.

...and 35 more consumer comments for J & K Air Conditioning

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