Vented vs Ventless Gas Fireplace

We get asked about the vented vs ventless gas fireplace differences on a daily basis here at The Great Fire Company. So, we decided it was time to put together this quick guide to choosing the right gas fireplace. The short answer:

• Vented gas fireplace: More work to install (and more expensive) but more realistic flame effects, safer, and better for homes relying on the fireplace for heat.
• Ventless gas fireplace: Simple to install and more affordable, but not allowed everywhere, lower BTU output, and some gas fumes can enter the room. 

We carry both styles here and understand the nuances between a ventless vs vented gas fireplace. We’d be happy to talk it over with you one-on-one if you want a personalized recommendation. So, reach out now, or learn more about the difference between vented and ventless gas fireplaces below! 

Vented vs Ventless Gas Fireplace at a Glance 

So What’s the Difference Between Vented and Ventless Gas Fireplaces? 

The whole vented vs ventless gas fireplace debate comes down to where exhaust goes and what that means for you. 

Exhausting Into the Room vs Outside the Home 

It dissipates into the room itself with a vent-free fireplace, but don’t worry - the unit runs at up to 99% efficiency. So it’s not like nasty stuff is contaminating your living room.

On the other hand, vented fireplaces send the exhaust out of your house through one of two ways:

• A vertical flue (B-vent fireplaces)
• A sealed pipe (direct-vent fireplaces)

This keeps your indoor air as clean as possible. It also allows the fireplace itself to operate at a higher BTU, so these units are typically better suited for installations where you want the fireplace to be a main source of heat. 

Other Differences Between Vented and Vent-Free Fireplaces

These are a few other nuances worth knowing if you’re weighing the ventless vs vented gas fireplace styles and aren’t sure which best suits you:

• Flame effects: The flame looks more realistic with vented gas fireplaces because it’s able to actually touch the log. The untrained eye may not even notice the difference. That’s not to say ventless fireplaces look gimmicky, but the flame and log have to be totally separate from a safety standpoint - so you just won’t see the flame “dance.”
• Complexity and cost: As you can imagine, the venting work is complicated and adds to the bottom line. You will likely hire a professional to handle this on your behalf. Ventless fireplaces are less work (and money) to get up and running. That being said, you may find the trade-off in cost and complexity to be worth it for the benefits of a vented unit.
• The safety side of things: We want to be clear in saying ventless fireplaces are not “dangerous.” They operate efficiently enough to avoid putting fumes out into your living room. However, there’s always going to be a level of risk with them that doesn’t exist with a vented fireplace. 
• Installation flexibility: You can quite literally put a vent-free fireplace anywhere in your home - or even out on your patio, for that matter! You have to install vented fireplaces somewhere that allows for a vent to go through the ceiling or out the wall.

Choosing the Right Vented Fireplace 

Should you lean towards this side of the vented vs ventless gas fireplace comparison, you need to then narrow it down between a direct-vent vs B-vent fireplace - and that’s a whole other can of worms! 

The key takeaway is that direct-vent fireplaces are generally safer as far as indoor air goes. They send gases and odors straight out of your home, whereas B-vent fireplaces don’t have a fully sealed combustion chamber. 

How Safe Are Vent-Free Fireplaces, Really? 

Very! The fact that exhaust goes out into the living room (or wherever you end up installing the fireplace) is a big difference between the vented vs ventless gas fireplace, but we don’t want to make it sound like this is a “dangerous” thing.

They burn as close to 100% efficiency as possible, so you honestly have very little to worry about. They also have built-in detectors for carbon monoxide, which will automatically turn the fireplace off at a certain level. 

Are You Trying to Convert a Wood Fireplace? 

A lot of our customers initially come to us curious about the ventless vs vented gas fireplace decision because they have an old wood fireplace they’re trying to convert. 

There are actually a number of ways you can go about this. We wrote an entire guide about it: gas insert vs gas fireplace vs gas logs. All three approaches have their pros and cons. 

Gas logs don’t do much as far as heat output goes. They’re mostly there for looks, which might not be a dealbreaker for you. The easiest way to handle the conversion is with a gas fireplace insert. We can help you find the right one. Just reach out!

Still Have Ventless vs Vented Gas Fireplace Questions? 

This guide should leave you fairly confident in your next steps. But if not, we would love to talk it over with you one-on-one! Just get in touch with our team today for personalized guidance. 

Our experts will help you weigh your options and point you in the right direction. We can even pinpoint the perfect model from our catalog, where you’ll gain access to the best fireplaces from the most trusted brands the industry has to offer. 

Don’t stress about the vented vs ventless gas fireplace debate - let us walk you through it!