A fireplace insert upgrades an existing masonry opening with a sealed, efficient unit, so you get more heat and less smoke up the chimney than an open hearth. The collection includes Buck Stove wood and gas inserts such as the Model 21, Model 74ZC and Model 34 series, Napoleon Oakville direct vent gas inserts and S-series wood inserts, Osburn Matrix and 3500 wood inserts, and Modern Flames Orion electric inserts. Widths run from 22 inches to about 41 inches. Check the opening dimensions and the liner needs before you pick a model.

16 products
  • Buck Stove 34" Model 34 Contemporary Vent Free Gas Stove Insert with Blower 33,000 BTU Buck Stove 34" Model 34 Contemporary Vent Free Gas Stove Insert with Blower 33,000 BTU
    Buck Stove 34" Model 34 Contemporary Vent Free Gas Stove Insert with Blower 33,000 BTU
    Buck Stove

    Buck Stove 34" Model 34 Contemporary Vent Free Gas Stove Insert with Blower 33,000 BTU

    Vent Free Gas Stove · 33,000 BTU · 34" Wide Contemporary vent free flames with an adjustable trim kit The Buck Stove Model 34 Contemporary is a vent free gas...
    $1,899.00
    $1,899.00

    33k BTUNatural Gas / PropaneVent-Free34 in view

    Ready to ship free US delivery

  • Dimplex Revillusion 42" Built-in Electric Firebox With Glass Pane and Plug Kit Dimplex Revillusion 42" Built-in Electric Firebox With Glass Pane and Plug Kit
    Dimplex Revillusion 42" Built-in Electric Firebox With Glass Pane and Plug Kit
    Dimplex

    Dimplex Revillusion 42" Built-in Electric Firebox With Glass Pane and Plug Kit

    Built-in Electric Firebox · 42" · up to 8,800 BTU A 42-inch firebox where the flames seem to rise from the logs The Dimplex Revillusion 42" is a built-in electric...
    $2,669.99
    $2,669.99

    8.8k BTUElectricNo Vent Required (Electric)42 in view

    Ready to ship free US delivery

  • Modern Flames Orion 54" Traditional Virtual Built-in Electric Fireplace 8,300 BTU Modern Flames Orion 54" Traditional Virtual Built-in Electric Fireplace 8,300 BTU
    Modern Flames Orion 54" Traditional Virtual Built-in Electric Fireplace 8,300 BTU
    Modern Flames

    Modern Flames Orion 54" Traditional Virtual Built-in Electric Fireplace 8,300 BTU

    Built-in Electric Fireplace · 54" · up to 8,300 BTU The widest Orion for a full feature wall The Orion 54 is the largest firebox in this group, stretching over...
    $5,999.00
    $5,999.00

    8.3k BTUElectricNo Vent Required (Electric)54 in view

    Ready to ship free US delivery

  • Modern Flames Orion 42" Traditional Virtual Built-in Electric Fireplace 8,300 BTU Modern Flames Orion 42" Traditional Virtual Built-in Electric Fireplace 8,300 BTU
    Modern Flames Orion 42" Traditional Virtual Built-in Electric Fireplace 8,300 BTU
    Modern Flames

    Modern Flames Orion 42" Traditional Virtual Built-in Electric Fireplace 8,300 BTU

    Built-in Electric Fireplace · 42" · up to 8,300 BTU Bigger heat and a statement-size Heliovision fire At 42 inches wide, the Orion steps up to a heater rated as...
    $3,499.00
    $3,499.00

    8.3k BTUElectricNo Vent Required (Electric)42 in view

    Ready to ship free US delivery

  • Modern Flames Orion 36" Traditional Virtual Built-in Electric Fireplace Insert 5,000 BTU Modern Flames Orion 36" Traditional Virtual Built-in Electric Fireplace Insert 5,000 BTU
    Modern Flames Orion 36" Traditional Virtual Built-in Electric Fireplace Insert 5,000 BTU
    Modern Flames

    Modern Flames Orion 36" Traditional Virtual Built-in Electric Fireplace Insert 5,000 BTU

    Electric Fireplace Insert · 36" · 5,000 BTU Taller opening, bigger fire, same Heliovision realism The Orion 36 is where the line gains real height, with a firebox nearly 25...
    $2,999.00
    $2,999.00

    5k BTUElectricNo Vent Required (Electric)36 in view

    Ready to ship free US delivery

  • Modern Flames Orion 30" Traditional Virtual Built-in Electric Fireplace Insert 5,000 BTU Modern Flames Orion 30" Traditional Virtual Built-in Electric Fireplace Insert 5,000 BTU
    Modern Flames Orion 30" Traditional Virtual Built-in Electric Fireplace Insert 5,000 BTU
    Modern Flames

    Modern Flames Orion 30" Traditional Virtual Built-in Electric Fireplace Insert 5,000 BTU

    Electric Fireplace Insert · 30" · 5,000 BTU A mid-size Orion for living room feature walls Step up from the 26 and you get the Orion 30: a wider firebox...
    $2,499.00
    $2,499.00

    5k BTUElectricNo Vent Required (Electric)30 in view

    Ready to ship free US delivery

  • Modern Flames Orion 26" Traditional Virtual Built-in Electric Fireplace Insert 5,000 BTU Modern Flames Orion 26" Traditional Virtual Built-in Electric Fireplace Insert 5,000 BTU
    Modern Flames Orion 26" Traditional Virtual Built-in Electric Fireplace Insert 5,000 BTU
    Modern Flames

    Modern Flames Orion 26" Traditional Virtual Built-in Electric Fireplace Insert 5,000 BTU

    Electric Fireplace Insert · 26" · 5,000 BTU Heliovision flames sized for small walls The Orion 26 is the most compact size in the Modern Flames Orion Traditional line, made...
    $2,249.00
    $2,249.00

    5k BTUElectricNo Vent Required (Electric)26 in view

    Ready to ship free US delivery

  • Osburn 36" Matrix 1900 Wood Burning Insert 45,000 BTU Osburn 36" Matrix 1900 Wood Burning Insert 45,000 BTU
    Osburn 36" Matrix 1900 Wood Burning Insert 45,000 BTU
    Osburn

    Osburn 36" Matrix 1900 Wood Burning Insert 45,000 BTU

    Wood Burning Insert · 45,000 BTU · 36" Wide A compact, tapered insert that fits smaller hearths The Osburn Matrix 1900 is a non-catalytic wood insert with a cast iron...
    $2,799.00
    $2,799.00

    45k BTUWoodChimney / Masonry36 in view

    Ready to ship free US delivery

  • Osburn 3500 Wood Burning 30" Insert with Blower 110,000 BTU Osburn 3500 Wood Burning 30" Insert with Blower 110,000 BTU
    Osburn 3500 Wood Burning 30" Insert with Blower 110,000 BTU
    Osburn

    Osburn 3500 Wood Burning 30" Insert with Blower 110,000 BTU

    Wood Burning Insert · 110,000 BTU · 30" Wide Big firebox, big glass and a 10-hour burn time The Osburn 3500 is a high-output wood insert with one of the...
    $3,379.00
    $3,379.00

    110k BTUWoodChimney / Masonry30 in view

    Ready to ship free US delivery

  • Osburn 33” Matrix 2700 Wood Burning Insert 80,000 BTU Osburn 33” Matrix 2700 Wood Burning Insert 80,000 BTU
    Osburn 33” Matrix 2700 Wood Burning Insert 80,000 BTU
    Osburn

    Osburn 33” Matrix 2700 Wood Burning Insert 80,000 BTU

    Wood Burning Insert · 80,000 BTU · 33" Wide A big-view wood insert with a cast iron faceplate The Osburn Matrix 2700 is a non-catalytic wood-burning insert with a very...
    $4,099.00
    $4,099.00

    80k BTUWoodChimney / Masonry33 in view

    Ready to ship free US delivery

  • Osburn 2000 Wood Burning 28" Insert with Heat Blower 75,000 BTU Osburn 2000 Wood Burning 28" Insert with Heat Blower 75,000 BTU
    Osburn 2000 Wood Burning 28" Insert with Heat Blower 75,000 BTU
    Osburn

    Osburn 2000 Wood Burning 28" Insert with Heat Blower 75,000 BTU

    Wood Burning Insert · 75,000 BTU · 28" Wide EPA 2020 wood insert with a faceplate to cover your masonry opening The Osburn 2000 Insert is a non-catalytic wood-burning insert...
    $2,729.00
    $2,729.00

    75k BTUWoodChimney / Masonry28 in view

    Ready to ship free US delivery

  • Buck Stove 30" Model 81 Non-Catalytic Wood Burning Stove Insert with Door and Blower 59,500 BTU Buck Stove 30" Model 81 Non-Catalytic Wood Burning Stove Insert with Door and Blower 59,500 BTU
    Buck Stove 30" Model 81 Non-Catalytic Wood Burning Stove Insert with Door and Blower 59,500 BTU
    Buck Stove

    Buck Stove 30" Model 81 Non-Catalytic Wood Burning Stove Insert with Door and Blower 59,500 BTU

    Non-Catalytic Wood Stove · Up to 59,500 BTU · Heats 1,600-2,700 sq ft A big-home wood stove with a built-in blower and ash pan The Buck Stove Model 81 is...
    $3,058.00
    $3,058.00

    59.5k BTUWood30 in viewUp to 2,700 sq ft

    Ready to ship free US delivery

  • Buck Stove 38" Model 34 Manhattan Vent Free Gas Stove Insert 33,000 BTU Buck Stove 38" Model 34 Manhattan Vent Free Gas Stove Insert 33,000 BTU
    Buck Stove 38" Model 34 Manhattan Vent Free Gas Stove Insert 33,000 BTU
    Buck Stove

    Buck Stove 38" Model 34 Manhattan Vent Free Gas Stove Insert 33,000 BTU

    Vent Free Gas Stove · 33,000 BTU · 38" Wide Black satin and pewter styling for modern rooms The Buck Stove Model 34 Manhattan is the redesigned, contemporary version of...
    $2,031.00
    $2,031.00

    33k BTUNatural Gas / PropaneVent-Free38 in view

    Ready to ship free US delivery

  • Buck Stove 22" Model 21ZC Zero Clearance Wood Burning Stove Insert with Door 28,900 BTU Buck Stove 22" Model 21ZC Zero Clearance Wood Burning Stove Insert with Door 28,900 BTU
    Buck Stove 22" Model 21ZC Zero Clearance Wood Burning Stove Insert with Door 28,900 BTU
    Buck Stove

    Buck Stove 22" Model 21ZC Zero Clearance Wood Burning Stove Insert with Door 28,900 BTU

    Zero Clearance Wood Stove Insert · Up to 28,900 BTU · Heats 800-1,800 sq ft Fireplace-free wood heat for cabins and small homes The Buck Stove Model 21ZC is a...
    $3,006.00
    $3,006.00

    28.9k BTUWood22 in viewUp to 1,800 sq ft

    Ready to ship free US delivery

  • Buck Stove 32" Model 384 Vent Free Gas Stove Insert 33,000 BTU Buck Stove 32" Model 384 Vent Free Gas Stove Insert 33,000 BTU
    Buck Stove 32" Model 384 Vent Free Gas Stove Insert 33,000 BTU
    Buck Stove

    Buck Stove 32" Model 384 Vent Free Gas Stove Insert 33,000 BTU

    Vent Free Gas Stove · 33,000 BTU · 32" Wide Real flame without a chimney, with a built-in thermostat blower The Buck Stove Model 384 is a vent free gas...
    $1,899.00
    $1,899.00

    33k BTUNatural Gas / PropaneVent-Free32 in view

    Ready to ship free US delivery

  • Buck Stove 38" Model 74ZC Zero Clearance Non-Catalytic Wood Burning Stove Insert with Door 52,400 btu Buck Stove 38" Model 74ZC Zero Clearance Non-Catalytic Wood Burning Stove Insert with Door 52,400 btu
    Buck Stove 38" Model 74ZC Zero Clearance Non-Catalytic Wood Burning Stove Insert with Door 52,400 btu
    Sold out
    Buck Stove

    Buck Stove 38" Model 74ZC Zero Clearance Non-Catalytic Wood Burning Stove Insert with Door 52,400 btu

    Zero Clearance Wood Stove Insert · Up to 52,400 BTU · Heats up to 2,600 sq ft High-output wood heat that frames into the wall The Buck Stove Model 74ZC...
    $3,708.00
    $3,708.00

    52.4k BTUWood38 in viewUp to 2,600 sq ft

    Sold out

Fireplace insert guide: measure, liner, fuel

Inserts live or die by their fit. Measure the opening at the front, back and depth, and note the hearth height and flue size. Then decide on fuel. Wood models, including Buck Stove and Osburn units, give the most heat and are often supplied with a blower. Gas models, such as Napoleon Oakville, run clean and are controlled by remote or thermostat. Electric versions skip the flue entirely. Most wood and direct vent gas units need a stainless liner and a surround or trim kit, which are often sold separately. Confirm that your chimney is in good condition before the install, and ask a certified installer to inspect the flue.

Do I need a liner for a fireplace insert?

For wood and gas inserts, usually yes. A stainless liner connects the insert to the flue and keeps exhaust contained. Electric inserts do not need one.

Can an insert heat a whole house?

A large wood insert can heat a significant area, but results depend on layout and insulation. Check the heated-area guidance and BTU rating on each model.