A Monessen fireplace insert turns the wood burning fireplace you already have into a vent free gas heater. This collection has one insert, the Solstice, for an old wood fireplace you want to use again. It comes 33 inches wide with a 31 by 17 inch window. You get warmth for the room the fireplace is in, with no chimney liner to run.


A Monessen ventless gas fireplace insert for the fireplace you already have

Monessen Hearth builds the Solstice for vent-free heat. The insert slides into your existing fireplace. A surround plate covers the old opening, and a built in fan pushes warm air into the room. Compare ventless inserts across brands, browse gas inserts, vented and ventless, or explore gas, wood and electric fireplace inserts.

The look, the fuel and the ignition

Choose brick or reflective black glass panels behind the flames for your interior style, plus a small or large black surround. Monessen log sets can be added for a different look. You can add a wall switch or remote. Order natural gas or propane and pick your ignition. Millivolt uses a standing pilot that needs no electricity, so the fire works when the power is out. IPI lights the pilot only when you turn the fire on, with no gas burning while it is off. For complete units, browse ventless gas fireplaces.

Fit and local code

Measure the width, height and depth of your firebox opening and send them to us. Check your local code first because some areas restrict vent free. Where restricted, consider sealed direct vent inserts.

A fireplace or a log set instead

For a new wall rather than an existing opening, see Monessen vent free fireplaces. For a gas log set and burner only in your existing fireplace, see Monessen gas logs.

Why buy from My Cozy Outdoors

We are an authorized Monessen dealer, so the full manufacturer warranty applies. Before you order a Monessen fireplace insert, we confirm fit and local code by phone. Call us and we will talk it through, or browse the full Monessen range.

FAQ

What is the best ventless gas fireplace insert?

No single insert is best for everyone. The Solstice needs no liner and offers a surround, fan, brick or black panels, natural gas or propane, and millivolt or IPI. Compare other brands on our ventless inserts page. Call us and we will help you compare.

Does the Monessen Solstice come with a trim kit for an existing masonry fireplace?

Yes. Choose a small or large black surround plate on the product page. It covers the old opening around the 33 inch insert. Send us your firebox width, height and depth so we can confirm which surround hides the gap.

Which is more efficient, a vented or a vent free insert?

A Monessen fireplace insert keeps nearly all its heat indoors without a liner. A vented insert sends some heat through a sealed pipe but never uses room air. Check local code first. Where vent free is restricted, our vented inserts page has sealed units.