Based on current listings checked October 2026. Your exact price depends on model, size and part number.
Most gas fireplace parts cost about $25 to $560. Thermocouples and thermopiles run about $25 to $130, pilot assemblies $55 to $250, gas valves $130 to $350, and remotes or receivers $100 to $240, while replacement glass can top $2,700 on large linear units.
Price insights
- Thermocouple (Heat & Glo, Napoleon, Mendota): $25 to $90
- Thermopile (millivolt systems): $50 to $130
- Pilot assembly: $55 to $250
- Gas valve, SIT Nova or 820 series: $220 to $350
Gas fireplace parts prices
| Part | OEM price | Aftermarket |
|---|---|---|
| Thermocouple (Heat & Glo, Napoleon, Mendota)High temperature LP thermocouples for some Mendota units run about $110 to $130 even aftermarket. | $25 to $90 | $30 to $40 |
| Thermopile (millivolt systems)Napoleon about $50, Heat & Glo about $70, Mendota about $130 OEM. | $50 to $130 | About $60 |
| Pilot assemblyIPI pilot assemblies on Heat & Glo start near $55. Full assemblies with thermopile run $130 to $250. | $55 to $250 | OEM only |
| Gas valve, SIT Nova or 820 seriesNapoleon SIT Nova about $225. Generic SIT 820 valves about $350. Buy the exact OEM valve. | $220 to $350 | OEM only |
| Gas valve, IPI or ProflameHeat & Glo IPI valve about $130. Napoleon Proflame SIT valve about $300. | $130 to $300 | OEM only |
| Ignition control moduleOlder HHT modules about $80. IPI Plus about $200. IntelliFire IFT2 about $225. | $80 to $225 | OEM only |
| Remote transmitter (handheld)Proflame 2 and Valor handsets. Universal Skytech kits start near $100. | $145 to $225 | $100 to $150 |
| Remote receiverSkytech receiver about $160 to $190. Valor receiver about $240. | $160 to $240 | OEM only |
| Wall mount remote or switchSimple wired wall switch about $35. Proflame wall transmitter about $230. | $35 to $230 | OEM only |
| Log set (Heat & Glo)Log sets are matched to the burner. Using the wrong set changes the flame and can cause sooting. | $315 to $470 | OEM only |
| Glass with gasket (standard 36" unit)Majestic 36 inch direct vent example. Glass must be the factory ceramic panel. | About $315 | OEM only |
| Glass assembly (large linear unit)Big linear and modern units cost far more. | $2,700 and up | OEM only |
| Glass gasket (10 ft roll)For resealing an existing glass frame. | — | About $60 |
| Blower or fan kitAftermarket Mendota blowers about $120 to $130 and Napoleon kits about $195 to $230. | About $560 (Majestic FK24) | $120 to $230 |
Prices checked October 2026 from authorized dealers, the Pro Grill store and Amazon. Always match the part to your model and serial number.
What gas fireplace parts cost in 2026
Gas fireplace parts are priced more like furnace parts than grill parts. A thermocouple can be $25, but a gas valve is $200 to $350 and a remote receiver is often over $150. Most repairs fall somewhere between $25 and $560 in parts, and replacement glass on a large linear fireplace can run well over $2,000 by itself.
The price depends on three things: what kind of ignition system the fireplace has, the brand, and whether the part is shared across many models or made for one.
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Most companies in our network are dealers or have dealer accounts, so they can usually bring the right part and install it in one visit.
Millivolt vs intermittent pilot systems
Most older gas fireplaces and many current ones use a standing pilot and a millivolt valve. The pilot stays lit, a thermocouple proves the flame for safety, and a thermopile makes a small voltage that runs the valve and the wall switch or remote. These parts are fairly cheap and common.
Newer fireplaces often use intermittent pilot ignition (IPI). The pilot only lights when you call for heat, and a control module, a flame sensor and a battery or transformer run the system. Heat & Glo calls its version IntelliFire. Napoleon and many others use SIT Proflame. These systems have more electronic parts, and the control boards and remotes cost more.
If you are not sure which you have, look through the lower grille. A small flame that burns all the time means a standing pilot.
Part by part breakdown
Thermocouples and thermopiles
A thermocouple runs about $25 to $90 OEM. Heat & Glo and Heatilator share an inexpensive one around $25. A Napoleon thermocouple is about $40 to $50 from the factory, and aftermarket versions run about $30. Mendota OEM thermocouples are pricier at about $70 to $90, and a high temperature LP version runs $110 to $130 even aftermarket.
Thermopiles cost about $50 to $130. A Napoleon thermopile is around $50, Heat & Glo about $70, and a Mendota OEM thermopile about $130. Aftermarket thermopiles are common at about $60. A weak thermopile is the most common reason a fireplace lights the pilot but will not turn on from the switch.
Pilot assemblies
A full pilot assembly includes the pilot hood, the orifice, the thermocouple or thermopile and sometimes the igniter. They run about $55 for a basic Heat & Glo IPI pilot up to $130 to $250 for complete assemblies on Heat & Glo, Regency and Mendota units. Gas type matters. Natural gas and propane pilots use different orifices and are sold separately.
Gas valves
Valves are the most expensive common repair. SIT Nova and 820 series valves used in Napoleon, Majestic, Mendota and others run about $220 to $350. A Heat & Glo IPI valve is closer to $130, and a Napoleon Proflame valve about $300. Do not buy a "close enough" valve. It has to match the gas type, the turndown and the brand's setup, and it should be installed by a gas-qualified tech.
Ignition modules and boards
Control modules for IPI fireplaces cost about $80 to $225. Older Heat & Glo modules are near $80, the IPI Plus module about $200, and the IntelliFire IFT2 board about $225. Before replacing a board, check the batteries in the backup pack and the remote. Dead batteries cause a lot of no-start calls.
Remotes and receivers
A replacement handheld remote costs about $145 to $225 from the manufacturer. Proflame 2 and Valor handsets fall in this range. The receiver behind the lower panel runs about $160 to $240. Universal Skytech remote kits that work with millivolt valves start around $100 at Walmart and other retailers, but they will not run IPI fireplaces that need the factory remote. Valor uses its own remote system, so a universal kit is not an option on most Valor units.
Log sets, glass and gaskets
Factory log sets for Heat & Glo run about $315 to $470. Logs are part of how the fireplace was tested and certified. The wrong set or a set placed in the wrong spot can cause sooting and carbon monoxide problems.
Glass is priced by size. A standard 36 inch Majestic glass and gasket assembly is about $315. A large linear unit like a Majestic Marquis can be over $2,700 for the glass alone. Never replace fireplace glass with tempered glass from a glass shop. It has to be the factory ceramic panel. If the glass is fine and the seal is leaking, a 10 foot roll of gasket is about $60.
Blowers
Blower and fan kits run about $120 to $560. Aftermarket replacement blowers for Mendota units are about $120 to $130 each, and an aftermarket Napoleon blower kit is about $195 to $230. A Majestic FK24 fan kit from the factory is about $560. A noisy blower is usually a worn motor bearing, and on many units the blower can be swapped without removing the firebox.
Prices by brand
- Heat & Glo and Heatilator share many parts. Small parts are cheap. IntelliFire boards and log sets are not.
- Napoleon uses SIT valves and Proflame remotes. Parts are easy to find and moderately priced.
- Regency pilot assemblies run high, around $180 for a natural gas assembly.
- Mendota OEM parts are some of the priciest per part, and the brand uses several thermocouple types.
- Majestic blowers and glass can be expensive, especially on linear models.
- Valor uses its own remote and receiver system, about $145 for a handset and $240 for a receiver.
Find the model and serial number first
Every gas fireplace has a rating plate. On most units it is on a chain or clipped behind the lower grille or louver panel, and on some it is inside the control compartment. It lists the model, serial number and gas type. Write all three down, plus a photo of the valve label. Many brands changed parts partway through a model run, so the serial number decides which part fits.
Buy OEM for gas valves, thermocouples, pilot assemblies and anything else that controls gas flow or proves flame. Aftermarket remotes, blowers and thermopiles can be fine on some units, but the safety parts are not where to save $20.
DIY vs hiring a pro
Swapping remote batteries or a blower on some models is a homeowner job. Anything that opens the gas line, including valves, pilots and thermocouples, should be done by a qualified tech who can leak test the connections and check gas pressure afterward. A tech will also clean the pilot and burner ports, which fixes more pilot outages than new parts do. A yearly gas fireplace cleaning catches most of these problems early.
Labor depends on how hard the part is to reach. Many valves and pilots come out through the front once the glass and logs are removed. Others require pulling the burner tray.
How Pro Grill and our network can help
Many companies in our network are hearth dealers or have dealer accounts. They can usually identify the part from the rating plate, order it and install it on the same visit or the next. Find a gas fireplace repair pro near you, or search for a pro by ZIP.
If you already know the part number, or have an older fireplace where parts are hard to track down, ask Pro Grill to locate the part. Pro Grill can source parts that are not listed in its online store.
If you also have a gas fire pit, the fire pit parts price guide covers burners, ignition kits and glass. For outdoor kitchens, see the grill repair vs replace guide.
Part prices by brand
Frequently asked questions
How much does it cost to replace a thermocouple on a gas fireplace?
The part costs about $25 to $90 OEM, with aftermarket versions around $30 to $40. Labor is extra and depends on how hard the pilot is to reach.
How much is a gas fireplace valve?
Most replacement valves cost about $130 to $350. SIT Nova and 820 series valves run about $220 to $350, and IPI valves on Heat & Glo units are closer to $130.
Why does my fireplace pilot light but the fireplace will not turn on?
On millivolt fireplaces, the usual cause is a weak thermopile, a bad wall switch or a loose wire. A thermopile costs about $50 to $130 and a tech can test it with a meter before replacing it.
Can I use a universal remote on my gas fireplace?
On many millivolt fireplaces, yes, and universal kits start near $100. IPI fireplaces like IntelliFire and Proflame units, and most Valor fireplaces, need the factory remote and receiver.
How much does replacement fireplace glass cost?
A standard 36 inch glass and gasket assembly is about $315. Large linear fireplaces can be $2,700 or more. It must be factory ceramic glass, not tempered glass.
Should I replace the logs in my gas fireplace?
Only with the factory set for your model, which runs about $315 to $470 for Heat & Glo. The wrong logs or wrong placement can cause soot and carbon monoxide problems.
