A fireplace insert turns a drafty open fireplace into a heater for your room without tearing it out. This collection brings together more than 30 wood, gas and electric options, so you can start with the fuel that suits your home. Choose firewood if you want to tend a real wood fire, gas if you want heat at a switch, or electric for flames with or without heat. Before you choose, check your existing fireplace type and opening size. The right fit matters as much as how the fire looks.


Fireplace inserts by fuel

A wood burning fireplace insert needs a brick or stone masonry fireplace, never a factory built one. These wood fireplace inserts burn dry, seasoned firewood, with a burn time of 7 to 10 hours per load. Every wood burning insert here meets the current EPA clean air rules. Several include a blower to push warm air into the room. If you want a heater that stands on the floor, explore freestanding wood stoves.

Compare gas fireplace inserts for heat without loading firewood. If you need a propane fireplace insert rather than natural gas, check the fuel options on the page. A direct vent gas fireplace insert draws outside air and sends exhaust through a sealed pipe up your chimney. Browse chimney liners and vent pipes for wood and vented gas setups. A ventless fireplace insert needs no pipe and keeps nearly all its heat indoors; check local code first. For an open fire focused more on looks than heat, consider gas logs.

Choose electric fireplace inserts for flames with or without heat and no gas line. Inserts fit existing openings, while built-in units suit framed walls. They plug into an outlet on their own circuit; many can be hardwired by an electrician for greater heat output.

How to choose the right size and fuel

Measure your fireplace opening’s width, height and depth at the front and back, since the firebox may taper. Match those measurements to the size information on the page, and check the surround that covers the gap. Wood options reach up to 2,700 square feet. Electric warms about 400 square feet on an outlet, or up to about 800 hardwired. For a power outage, look for gas with a standing pilot or battery backup.

Meet the brands

Osburn wood inserts cover small to large masonry openings. Empire Comfort Systems gas inserts offer direct vent and vent-free choices. Majestic gas inserts feature split or hand-painted logs. Superior gas inserts fit masonry or factory built fireplaces. Monessen vent-free inserts include a built-in fan.

Napoleon electric fireplaces include inserts and built-in units, with app control on many. Modern Flames electric options show video of real flames on a screen.

Building a whole new fireplace?

For a new wall or a rebuild, browse wood burning indoor fireplaces, complete gas fireplaces or electric fireplaces for walls and built-in spaces instead of choosing a heater for an old opening.

Why buy from My Cozy Outdoors?

We are an authorized dealer for every brand here, so the full manufacturer warranty applies. Call us with your measurements and fuel or chimney questions, and we will talk it through. Still exploring? Browse all indoor fireplaces or our indoor and outdoor fireplace collection.

Frequently asked questions

What is a fireplace insert?

It is a sealed wood, gas or electric heater that slides into your old fireplace, with a surround covering the gap. It turns lost chimney heat into room heat without demolition. Read our guide to inserts and how they differ.

Can you put a fireplace insert in an existing fireplace?

Yes. Wood needs masonry, never a factory built fireplace. Gas generally needs masonry; one line also fits factory built fireplaces. Electric needs the old chimney capped and damper sealed. Check the opening dimensions against the unit you choose.

Do fireplace inserts need a chimney or a liner?

Wood usually needs a steel chimney liner. Direct vent gas uses a sealed chimney pipe; vent-free gas needs neither. Electric needs no chimney, but an old one must be capped and its damper sealed. Check product pages for hookup parts.

How do I measure for a fireplace insert?

Measure width, height and depth at the front and back of the opening because old fireboxes narrow toward the rear. Note the hearth height, then compare your numbers with the size information on the page. Call us and we will talk it through.

Which fireplace insert is best, wood, gas or electric?

Choose wood for a real fire and up to 2,700 square feet of heat in masonry fireplaces. Choose gas for heat at a switch. Choose electric for flames without heat, or warmth for about 400 square feet on an outlet.