Can I repair fireplace insert?

Yes, it is often possible to repair a fireplace insert instead of replacing the entire unit. Fireplace inserts are designed to fit inside existing masonry fireplaces to increase efficiency and aesthetics. Like any appliance, inserts can develop issues over time that require maintenance and repair. With the right skills and parts, many common problems with fireplace inserts can be fixed by the homeowners themselves.

What is a Fireplace Insert?

A fireplace insert is an appliance installed inside an existing masonry fireplace. It consists of a firebox surrounded by a decorative facade with glass doors. Fireplace inserts act as a separate wood-burning or gas stove that vents through the existing chimney.

The benefits of a fireplace insert include:

– Increased heating efficiency – Inserts convert more heat from the fire into the room compared to open masonry fireplaces. They prevent heated room air from escaping up the chimney.

– Lower emissions – Inserts burn wood and gas more cleanly and efficiently than open fireplaces, producing less smoke and emissions.

– Aesthetic appeal – The decorative facades of inserts can completely transform the look of a traditional fireplace. Styles range from sleek and modern to traditional.

– Safety – Inserts contain and control the fire, reducing the risk of sparks escaping into the room. Glass doors also prevent direct contact with the flames.

Common Issues with Fireplace Inserts

Some common problems that can occur with fireplace inserts include:

Not igniting or staying lit – Faulty pilot assemblies, malfunctioning gas valves or clogged burner tubes can prevent gas inserts from lighting properly. Bad ignitors and buildup in the firebox can affect wood inserts.

Smoking – Creosote buildup in the chimney, inadequate draft, and insufficient ventilation can all cause smoking issues.

Overheating – Malfunctioning fans, airflow obstructions, and problems with the flue damper can lead to inserts overheating.

Noise – Worn out or unbalanced blower fans, fluttering firebox panels, and metal expanding and contracting as it heats up and cools down can all cause noise.

Leaking – Age, damage, and loose connections can allow gas or exhaust leaks in inserts. Deteriorating door seals also lead to air leaks.

Damage – Over time, the constant heating and cooling plus exposure to smoke and creosote can warp, corrode, and crack insert components.

Safety Considerations for Repair

While do-it-yourself repairs can save money compared to buying a new insert or calling a professional, safety should always be the top concern:

– Turn off gas and electric supplies to the insert before any work, and let components cool completely first.

– Wear protective equipment like work gloves and safety goggles.

– Have a fire extinguisher on hand.

– Read the owner’s manual for troubleshooting tips specific to your model.

– Check and follow local building codes regarding fireplace inserts. Permits may be required.

– Only repair components you fully understand and feel comfortable working on.

Improper repairs can make problems worse or create new hazards. When in doubt, call a professional.

Steps for Repairing a Gas Insert

Here are some general steps for diagnosing and repairing common problems with gas fireplace inserts:

1. Inspect the pilot assembly

A weak or improperly aligned pilot flame can prevent the unit from lighting or staying lit. Remove any dirt, corrosion, or other blockages from pilot tube ports and orifice. Adjust pilot hood alignment if needed so flame engulfs the thermocouple. Replace pilot assembly if faulty.

2. Check ignition system

Ensure ignitor wires are intact and properly connected. Replace any faulty ignitors. The flame sensor rod should also be cleaned.

3. Examine the burners

Remove any debris blocking burner ports or tubes. Use a soft brush and vacuum to clean. Check for cracks and replace any damaged burners.

4. Evaluate the gas valve

Use a multimeter to check if gas valve is receiving sufficient current to open and allow gas flow. If not, the control module may need replaced. Listen for click when valve switches on.

5. Inspect exhaust path

Check for leaks or blockages in exhaust system including vent tubes, blower, and chimney. Seal any leaks with high temperature silicone. Remove accumulated creosote or other buildup.

6. Replace worn gaskets/seals

Worn out or brittle gaskets around insert doors and other joints can lead to air leaks. Replace them with adequate high-heat resistant gasket material. Also reseat any detachable vent sections.

7. Adjust or replace malfunctioning fans

Clean fan blades of any dust buildup and ensure motors spin freely. Verify fans extract exhaust properly. Swap out defective fan motors if needed.

Steps for Repairing a Wood Insert

Here are some tips for troubleshooting and fixing common wood insert problems:

1. Examine the flue

Inspect entire length of chimney for creosote accumulations or other restrictions. Seal any leaks around flue joints. Clean out buildup to ensure proper draft.

2. Adjust air controls

Open primary air controls fully and verify any additional air inlet ports are clear. Regulate damper settings to allow adequate airflow into firebox.

3. Replace warped baffle plates

Remove and replace any internal baffles or panels that have warped from heat exposure and are obstructing airflow. Reinstall securely.

4. Inspect door seals

Check for leaks around door perimeter. Replace damaged gaskets and tighten door latch mechanism if needed to ensure an airtight seal.

5. Clean firebox interior

Remove ash, creosote, and fallen bricks or mortar using a wire brush and vacuum. Repair any damaged firebricks if possible.

6. Check fans and blowers

Ensure fan blades are clean and turn freely. Confirm blowers are drawing in ample air for combustion. Replace defective motors or bearings.

7. Adjust or replace damper

Clean any creosote or buildup from damper and ensure it opens fully. If damper is damaged, replace it.

8. Seal joints and air leaks

Use fireplace mortar or high-heat silicone wherever necessary to seal cracked joints, gaps, and penetrations that can lead to air leaks.

When to Call a Professional for Insert Repairs

While basic troubleshooting and DIY repairs are possible for many homeowners, there are some situations where it is advisable to have a professional service the fireplace insert:

– If repairs require extensively dismantling major unit components that you are uncomfortable doing yourself

– If the malfunction involves the gas line or electrical wiring

– If the issue involves a damaged catalyst, refractory panels, or structural frame components

– If the problem persists after multiple repair attempts

– If you smell gas or suspect an exhaust leak at any point

– If you are unsure or uneasy about performing a certain repair procedure safely

– If local building codes require licenced technicians perform certain kinds of fireplace insert repairs or installations

Calling a professional can be the safer, easier option compared to tackling repairs you are unfamiliar with. They also have specialized tools and testing equipment. Get an estimate of costs before any major work.

When to Replace Instead of Repair an Insert

If an older fireplace insert suffers from persistent issues or is deteriorating despite repairs, replacement may be the better investment:

– If inner firebox panels are severely corroded or cracked and can’t be replaced

– If the insert frame is warped or structurally unsafe

– If the exhaust system has extensive damage

– If essential components like the catalytic combustor need replacement and are no longer available

– If the model has been recalled or has safety hazards that can’t be remedied

– If efficiency has diminished substantially due to old age and wear

– If frequent problems make repairs exceedingly costly compared to replacement

– If cosmetic updates are desired and repairs can’t restore appearance

Newer inserts are more efficient and durable than older units. However, replacing the insert means also replacing the surrounding façade, which adds cost.

Cost to Repair vs. Replace a Fireplace Insert

Repair	Estimated Cost
Replace gaskets or seals	$25-$100
Replace fan or blower	$200-$400
Replace gas valve	$350-$500
Replace pilot assembly	$125-$250
Replace thermocouple or thermopile	$75-$150
Chimney inspection and cleaning	$150-$300
Total for minor repairs	$925-$1700

Replacement	Estimated Cost
Insert unit	$2000-$4000
Surround facade	$500-$1200
Installation	$500-$1000
Total for full replacement	$3000-$6200

As shown in the tables, fixing minor issues with an insert is generally far cheaper than complete replacement. However, at a certain point repair costs can exceed replacement cost. Get quotes on both options before deciding.

Finding Replacement Parts for Inserts

Many fireplace insert components such as blowers, thermopiles, door gaskets, valves, and ignitors can be replaced individually. OEM replacement parts can be ordered through:

– The insert manufacturer

– Third party part suppliers

– Appliance repair stores

– Hardware stores

– HVAC supply retailers

– Online retailers

To identify the specific parts needed, look up the make and model of your insert online or in documentation. Provide this info when ordering replacement components to ensure compatibility. Instructions for installation are often available.

For older inserts, replacement parts may be discontinued. In that case, generic universal components or salvaged parts may have to be substituted. Custom fabrication of parts is another option.

Conclusion

Repairing a malfunctioning fireplace insert is often preferable to replacing the entire unit, provided you can do the repairs safely. Typical problems with gas and wood inserts can be addressed by replacing worn components, cleaning, and routine maintenance.

However, repairs do have limits. If an aging insert has extensive damage or safety issues, professional replacement may be the wiser choice, albeit costlier. Get professional advice and quotes before undertaking any major work.

With patience and care, many insert repairs can be successfully performed by handy homeowners. But always exercise caution and put safety first when dealing with any malfunctioning gas or wood appliance. If in doubt, consult appliance repair specialists. With the right approach, you can extend the service life of your fireplace insert.