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564 High Output 864 High Output
564 High Output
Heating Capacity: Up to 1,400 Sq. Feet
Efficiency: 78.1%(NG), 79.69%(LP)
Weight: 165 Lbs.
Venting: Top
Glass Area: 30″W x 16 3/4″H
864 High Output
Heating Capacity: Up to 2,500 Sq. Feet
Efficiency: 82.13%(NG), 72.22%(LP)
Weight: 394 Lbs.
Venting: 45″ Top or Rear
Glass Area: 34 1/2″W x 22 1/4″H


For a quality gas fireplace you can enjoy for years to come, see our selection from Avalon.

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I recently was in the market for a fireplace. I found Tri-County Hearth & Patio Center through the local Chamber of Commerce. I visited the showroom, which had lots of product and some great displays. They gave me some good ideas, and we decided to purchase from them. The process was explained to us, and the installation took place without an hiccups. Thanks for a good experience; we can’t wait for winter to begin using our beautiful gas fireplace.
~ Rhonda Zimmerman, Leonardtown, MD

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Tri-County Hearth & Patio Center | 2475 Old Washington Road Waldorf, Maryland 20601