Installing a ventless gas fireplace, also known as a vent-free fireplace, can seem daunting to some homeowners. However, with proper planning and preparation, it does not have to be difficult. In this comprehensive guide, we will walk through the entire process step-by-step to give you the knowledge and confidence to install a ventless gas fireplace yourself.
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What is a Ventless Gas Fireplace?
A ventless gas fireplace, as the name implies, does not require any venting to the outside. Traditional wood-burning fireplaces and most gas fireplaces have a chimney or vent to release the smoke and gases produced during operation to the outside of the home.
Ventless gas fireplaces burn very cleanly and efficiently, only producing water vapor and carbon dioxide as byproducts. These can be safely vented into the room without the need for external venting. This makes them ideal for installing in existing homes and buildings where adding an external vent or chimney might be impractical or impossible.
Some key advantages of ventless gas fireplaces include:
- No external venting required – can be installed virtually anywhere
- Easy installation – no major remodeling needed
- Clean burning – no smoke, soot, or ash
- Thermostat controls – adjust flame height and heat output
- Realistic flame and log aesthetics
- Energy efficient – affordable to operate
- Safe to operate – meets current safety standards
Planning Your Installation
The first and most important step to a smooth installation is planning. Taking the time to consider the details and logistics ahead of time will help ensure the project goes according to plan. Here are the key things to think through:
Choose the Location
One of the primary benefits of a ventless fireplace is flexibility in positioning, since no external venting is needed. However, there are still some limitations on placement to consider:
- Must be on an interior wall – not suitable for external walls or locations exposed to outdoor elements
- Needs access to natural gas supply line, unless planning for a propane unit
- Requires 120V electrical outlet nearby for operation
- Should not be located under ceiling fans or in high traffic areas
- Make sure there is adequate clearance from walls and combustible materials
Also consider the aesthetics and functionality of the location. Focus on visibility from key areas of the home and proximity to seating areas for maximizing enjoyment.
Pick the Right Size
Ventless fireplaces come in a range of sizes from compact 20-inch models to expansive 72-inch models. Consider the space you have available and how much heating power you require. Larger fireplaces produce more heat output at the cost of taking up more area.
Also double check the clearance to combustibles requirements for the model size you choose. This specifies the minimum distance that must be maintained from the fireplace to walls, furniture, drapes and other objects. This will impact placement options.
Determine Fuel Type
The majority of ventless fireplaces run on natural gas, connecting directly to the gas supply line. But propane models are also available for homes without gas service. Propane units require installation of a specialized external tank and regulator.
If you do not currently have natural gas service at the intended location, factor in the cost and process of establishing new gas service when budgeting and planning the project.
Assess Electrical Needs
While ventless fireplaces do not need electricity to operate in most cases, having access to power does provide benefits. Things to consider:
- Electricity enables thermostat controls for adjusting heat output
- Fan kits for circulating heat require electricity
- Accent lights around the fireplace need power as well
- Plan where the electrical outlet will be located nearby
Get Necessary Permits
Most municipalities require permits for installation of gas appliances, including ventless fireplaces. Research permit requirements in your area and budget accordingly. The permit process often involves an inspection by the local building department after installation as well.
Hire a Professional or DIY?
You must decide whether to tackle the ventless fireplace installation as a DIY project or hire a professional contractor. The process definitely is doable for a competent DIYer comfortable with basic tools and construction skills.
However, if you have any hesitation or uncertainty, there is no shame in hiring a pro. Gas and fire introduce greater risks that may make the cost of professional installation worthwhile for peace of mind.
What You’ll Need for Installation
With planning and logistics handled, next focus on acquiring the necessary materials and tools. Having everything ready to go will make the installation process smoother. Essential items you will need include:
- The ventless fireplace unit
- Gas line supplies:
- Piping
- Shut-off valve
- Fittings and connectors
- Sealant/teflon tape
- Wall mounting bracket
- Media for firebox (logs, stones, etc)
- Optional accessories like fans or accent lighting
- Safety gear:
- Work gloves
- Safety glasses
- Dust mask
- Tools:
- Phillips & flat head screwdrivers
- Adjustable wrench
- Pipe wrench
- Drill
- Hole saw
- Stud finder
- Level
- Tin snips
Reference the installation manual for the exact supplies included with the fireplace unit. Also check for any special notes on tools required. For example, certain models may specify using a voltage tester or gas leak detector.
Once you’ve compiled all the needed supplies, you are ready to get started with the installation.
Installation Step-by-Step
With proper planning completed, the ventless gas fireplace installation process itself takes a full day in most cases. It involves careful assembly, connecting gas and electricity, framing the firebox enclosure, and finishing touches.
Follow these key steps:
Assemble the Fireplace
Begin by unpacking all components and verifying you have everything. Refer to the owner’s manual for unit specifics. Assembly will typically involve:
- Attaching the burner to the firebox
- Installing logs/media
- Adding accent lights, fans or other accessories
Take care not to damage any parts and confirm the burner aligns properly before proceeding.
Determine Venting Needs
Though ventless models do not need external venting, you do need to plan adequate ventilation. All units require a certain volume of fresh air circulation to support combustion and ventilation to offset the byproducts released.
Refer to the owner’s manual for specific air circulation minimums. Inadequate ventilation is dangerous. Planning openings to provide ample fresh airflow is a must.
Run Gas Supply Line
This involves connecting new gas piping between the existing supply line (or external propane tank) to the area where the fireplace will be installed. The steps include:
- Determine the appropriate pipe size based on BTU rating, length of run, and number of fittings
- Plan the piping layout and measure needed lengths
- Cut pipe sections and deburr the ends
- Attach fittings using thread sealant
- Connect pipes with unions/fittings to create the supply line
Use only approved pipes and components for gas lines, and ensure leak-free connections. An additional shutoff valve right near the fireplace is recommended for safety and ease of maintenance.
Run Electrical Supply
If integrating lighting, fans or controls, electrical wiring will also be needed. Simplest option is plugging into a nearby outlet. For a more integrated look, wiring can be routed directly to a switch or smart home panel. Be sure to:
- Use proper gauge wire for amperage rating
- Include a local shutoff switch
- Follow all electrical codes
Consider employing a professional electrician if you are uncomfortable working with electrical.
Prep the Installation Site
With gas and electrical prepped, focus next on the actual installation area. Proper framing and support is crucial for safety and aesthetics. Key steps here include:
- Frame a surround with 2×4 lumber to enclose the rear and sides. This masks edges and provides an attachment point for finishing materials later.
- Build a base platform if the fireplace is freestanding rather than built into the wall. Must be sturdy and level.
- Cover walls with non-combustible backer board if drywall or wood paneling will be used for the finish.
- Build an enclosure for any recessed applications.
Refer to clearance requirements and weight load when building framing. Also accommodate provisions for gas and electrical lines to route into the framed area.
Secure the Fireplace
With framing in place, the fireplace unit can be installed. Use the provided wall mounting bracket secured into the framing studs. Ensure it is level and capable of bearing the full weight.
For recessed and built-in applications, you may need to construct supports like a ledger board or plenum to hold the unit. Refer to the manual for mounting details.
Connect Gas & Electrical
The fireplace can now be hooked up to the gas and electrical supply lines you prepared previously:
- Connect gas line to shutoff valve and fireplace receptacle using provided fittings
- Leak test carefully with soap and water solution
- Plug electrical into nearby outlet or hardwire to switch or panel
- Verify proper operation of all lighting, fans and controls
Take time making connections to prevent any leaks or safety issues.
Finish the Installation
You’re in the home stretch! Just a few finishing touches:
- Complete framing trim around the fireplace
- Install wall finish materials like drywall, stone, etc.
- Add the mantel or other trim features
- Complete final inspection by local authorities
- Make any minor adjustments to ensure proper clearances
And that completes the installation! Be sure to thoroughly read and understand the operation and maintenance instructions. Only use fireplace models that have been safety certified. With proper use and care, your new ventless gas fireplace will provide beauty and warmth for years to come. Enjoy!
Conclusion
Installing a ventless gas fireplace takes careful planning, preparation and attention to detail. But the process is very manageable for most DIYers with basic skills. The most important requirements are:
- Choose an ideal location with access to gas and electricity
- Determine adequate ventilation and clearances
- Use proper materials and follow codes for gas and electrical lines
- Build secure supports and framing for the fireplace
- Read and follow all instructions thoroughly
While hiring a professional is an easier option, doing it yourself will save money. Just be sure you are able to dedicate the necessary time and focus. Rushing through steps or taking shortcuts risks safety issues down the road.
Ventless gas fireplaces provide a stunning focal point and heat source for living spaces. With appropriate planning and care taken during installation, you can enjoy your new fireplace for many years. Just be sure to get any necessary permits and approvals before lighting your first fire!