A Monessen vent free fireplace gives you a real gas fire built into the wall without a vent path. Each arrives complete with a burner and a log set in the traditional units or fire glass in the linear units. Choose a traditional wood fire look or a low, wide opening with fire glass. Before choosing your Monessen ventless fireplace, check wall depth, room size and local code. We can talk through which vent free gas fireplace fits your plans.


Choose your Monessen vent free fireplace

The small traditional fireplace is 32 inches wide and fits a shallow wall about 13 inches deep. The deep traditional option is 32 or 36 inches wide, with a clean face for a large room.

The linear option comes in widths of 42, 48 or 60 inches for a modern look. Its flames rise through fire glass, with colored lights that glow even when the fire is off. Compare styles in our linear fireplaces collection.

The 48-inch see-through option shares a fire between two rooms. Browse double sided fireplaces or explore corner fireplaces for another layout.

No chimney, with heat staying in the room

These vent-free fireplaces from Monessen Hearth need no chimney or vent pipe. Nearly all the heat stays in the room, bringing warmth to your home. Order natural gas or propane. Traditional units offer millivolt or IPI ignition. Check your local code first. Compare ventless options across brands, other gas fireplaces or the wider indoor fireplace range.

Need a firebox, logs, insert or outdoor fireplace?

Choose one of the Monessen fireboxes to pair with your own burner choice. Browse gas logs and glass burners separately. For an existing wood-burning fireplace, consider a vent free insert. For a patio wall, explore Monessen outdoor fireplaces.

Why buy from My Cozy Outdoors?

We are an authorized Monessen dealer, so your Monessen gas fireplace has the full manufacturer warranty. Browse the whole Monessen range. For help with wall depth, size, fuel and local code, call us and we will talk it through.

Frequently asked questions

What are the downsides of a ventless gas fireplace?

Local codes can restrict vent free fireplaces. The fire burns in the room, so room size matters. The smallest linear option offers a reduced heat burner. We confirm local code with you before ordering. The outdoor line’s see-through direct vent units offer a sealed alternative.

What states ban ventless fireplaces?

Rules come from states, counties and cities, and they change, so we do not keep a state list here. Check your local code first. Tell us where the fireplace is going, and we will check the rule with you before you order.

What is the difference between millivolt and IPI ignition on a Monessen fireplace?

Millivolt uses a standing pilot without electricity, so your Monessen vent free fireplace works during outages. IPI lights the pilot only when you turn the fire on, using no pilot gas while off. Choose on traditional product pages. Linear units use a button, with optional wall switch, remote or Wi-Fi.