Can an older or discontinued gas fireplace still be converted if the manufacturer no longer makes a conversion kit?
Sometimes, but not always — and this is one where honesty matters more than a sales pitch. If the manufacturer has discontinued the listed conversion kit for your model, there's often no safe, legal way to convert it, because a proper conversion needs that model's specific certified parts. When no kit exists, replacing the appliance is usually the right call.
Why the kit has to match the model
A conversion isn't just 'smaller holes.' Each appliance is certified as a system — burner, orifices, pilot, regulator, pressure — and the manufacturer's kit is the only combination tested and listed for that firebox. When the kit is discontinued and no listed equivalent exists, converting with generic parts isn't a shortcut, it's an uncertified appliance. That's a unit no honest gas contractor will sign off on and no inspector will pass. We won't cobble one together, because the failure mode is soot, poor combustion, or worse.
What we check before saying no
Before we give up on an older unit, we track down the model and serial off the rating plate and check whether the manufacturer — or a successor brand — still lists a kit, since lines like Majestic, Heatilator, and Superior have changed hands and old kits sometimes live on under a new name. Some older units were sold convertible from the factory, and where the original kit — the alternate orifices, pilot, and pressure spec — is still stocked, the swap is clean. We do the homework first. Often on a 15-to-30-year-old prefab, though, the kit is gone and the firebox is near the end of its service life anyway.
The upgrade path when conversion's off the table
If your street is switching from propane to natural gas, or you're moving a unit onto a propane property, a discontinued kit is often the nudge to replace rather than patch. A new direct-vent unit — say a Napoleon or Heat & Glo built for your fuel — comes with a fresh warranty, better efficiency, and battery-backup ignition for outages. We'll quote the honest repair-versus-replace math, not push you toward the priciest box. Call (828) 545-0525 for a free assessment.
Related questions
- Do I need a conversion kit specific to my fireplace's brand and model?
- Are all gas fireplaces convertible between natural gas and propane?
- Can I convert a propane fireplace to natural gas?
- Can I do a gas fireplace fuel conversion myself, or does it need a pro?
- What parts get changed when a fireplace is converted from one gas to the other?
- How do I know if my house has natural gas or propane?
Still deciding? Talk to a real installer.
Free assessments across Western North Carolina — no pressure, straight answers.

