Expert Wood Fireplace Insert Installations for Los Angeles Homeowners

Looking for ways to modernize your home? Wood fireplace inserts can transform a drafty, unusable firebox into a stunning focal point and source of heat. Serving the greater Los Angeles area, including Santa Clarita, Pasadena, and Burbank, Mr. Chimney Sweep Service delivers seamless residential installations. Our experienced technicians carefully fit these units to help maximize warmth and reduce wasted energy. Trust our dedicated team to bring your vision to life – without the hassle of unclear pricing or unnecessary work.

schedule an appointment Call (818) 619-4758
A stock image of man putting a wood log in a wood fireplace insert.
wood fireplace insert

How Does a Wood Fireplace Insert Work?

A wood fireplace insert functions as a sealed heating engine placed directly inside your existing fireplace structure. Traditional masonry hearths are known for losing a lot warmth up the chimney. Upgrading to one of these closed-combustion metal units helps retain that energy, transforming a drafty firebox into a highly effective room heater. The system relies on several integrated design features to maximize heat output and support better overall performance:

  • Sealed Construction: A heavy metal firebox traps combustion heat rather than letting it escape upward.
  • Glass Front: Fixed doors prevent cold room drafts from entering the fire, while radiating warmth outward.
  • Blower Fans: Integrated electrical fans circulate trapped hot air back into your living space to improve efficiency.
  • Secondary Combustion: Advanced baffles burn smoke a second time, which helps reduce buildup and increases heat output.
  • Dedicated Venting: A connected stainless steel liner routes exhaust straight to the roof, supporting reliable drafting.
wood insert installation

How Do You Measure for a Wood Fireplace Insert?

Sizing your hearth correctly helps ensure your new unit fits securely and operates properly. Technicians take precise measurements of your existing set-up to match the right system to your specific home. Gathering accurate dimensions involves checking these six specific areas:

Front Width

Measure the opening at its widest front point

Back Width

Determine the exact width along the rear wall

Front Height

Measure vertically from the floor to the lintel

Back Height

Check the total vertical space at the rear

Depth

Find the internal distance from front to back

Hearth Extension

Measure the protective floor pad extending outward

Stock image of a wood fireplace insert keeping a room cozy.
Our Installation Process

What We Address & How

Not all hearth upgrades are exactly the same. Installing a wood fireplace insert involves specific structural and venting phases, each requiring a tailored approach. Our technicians are trained to evaluate your existing masonry and complete your new setup professionally.

Firebox Evaluation & Sizing 

When measuring the exact internal dimensions of your current hearth, we assess the available space to help select an appropriately sized unit, which optimizes both heating output and overall aesthetic appeal.

Stainless Steel Relining 

By running a continuous metal liner straight down your existing chimney, this specific venting upgrade ensures you’re meeting modern building codes and supporting proper draft.

Electrical Routing

Supplying power for the integrated blower fan system may require routing a dedicated electrical connection directly to the hearth, which helps the unit circulate warm air effectively throughout your living space.

Unit Placement & Leveling 

After sliding the heavy metal firebox directly into the prepared masonry opening, we ensure the unit sits completely level and seal the surrounding gaps to help block unwanted cold drafts from entering the room.

Surrounds & Aesthetic Finishing

Attaching customized faceplates around the new glass front, we carefully fit these exterior metal panels to help cover any remaining masonry gaps and create a beautiful, seamless transition into your room.

System Testing & Demonstration

After checking blower functions and confirming proper exhaust flow, we review the air controls, adjust the fan settings, and walk you through basic operation instructions before officially finishing the project.

Common Questions

Wood Fireplace Insert FAQs

Questions before you book? Here are the ones we hear most often.

Does a wood fireplace insert need a chimney liner? 

Yes, a new stainless steel chimney liner is usually required when installing a wood fireplace insert. This dedicated metal pipe helps properly size the flue to match the insert’s exhaust output, which supports highly reliable drafting and minimizes hazardous buildup.

Can you install a wood insert without relining the chimney? 

Industry professionals generally advise against skipping the new liner installation. Most modern building codes and manufacturer guidelines require a continuous stainless steel pipe connected directly to the unit. This setup helps support proper ventilation and prevents severe damage to older masonry. 

How is a wood fireplace insert connected to the chimney?

Certified technicians connect the insert directly to a dedicated stainless steel liner. They secure this continuous metal pipe to the exhaust collar on top of the insert, routing it completely up through the existing flue to vent smoke directly outside.

What type of chimney works best with a wood insert?

Traditional masonry structures generally work best for housing these heavy metal units. Solid brick or stone fireplaces provide the necessary structural support and clearance required for a wood insert, while factory-built setups frequently require entirely different, specially approved heating solutions.

Do you need to modify the fireplace to install a wood insert?

Minor modifications are usually necessary during installation. Technicians will likely need to remove the existing damper assembly to make room for the new stainless steel exhaust liner. However, the surrounding exterior brickwork generally remains completely intact and structurally undisturbed throughout the process.

Can you install a wood fireplace insert in any fireplace?

Unfortunately, you can’t place these units into just any fireplace. The existing structure must be a fully functional, traditional masonry fireplace. Technicians measure the internal firebox carefully to ensure the new metal insert fits properly and vents correctly.

What Our Customers Say

  • Did a Really Great Job

    “Just had Mr. Chimney Sweep Service come and inspect our chimney. They kept it clean and did a really great job. He also gave me a ton of information regarding our fireplace, when to clean, what wood to burn, and storing our wood. He cleaned our chimney for what I think is a great price. He also handled a smoking issue we were having free of charge. For all the work, the quality of work and customer service I would recommend him to everyone I know. Very satisfied.”
    Catherine G.
    Yelp

  • Knowledgeable, Friendly, No Nonsense

    “I highly recommend Mr. Chimney Sweep Service… He just did a very thorough job on the chimney for our wood burning stove. His pricing is very reasonable, he’s knowledgeable, friendly, no nonsense. We will definitely be using him again.”
    Tamara G.
    Yelp

  • Thorough, Professional, Took the Time

    “Mr. Chimney Sweep Service was thorough, professional, took the time to ensure that what we were ordering was exactly what we wanted, and walked us through every step of the process to ensure that we had no questions. When he was done, after explaining how to use the fireplace (could not be easier) and assuring us that if we had any questions or problems we should reach out to him directly, he cleaned up everything so there is absolutely no evidence that work was done.”
    David E.
    Yelp

  • Upfront and Honest

    “We had a fantastic experience with Mr. Chimney Sweep Service. He was upfront and honest and gave us alternatives to our older wood burning fireplaces that other companies did not. Everything is working beautifully a year later. I don’t normally leave reviews but this is a great company.”
    Heidi R.
    Yelp

  • Very Knowledgeable

    “Mr. Chimney Sweep Service was very knowledgeable and helped me decide how I wanted to set up my fireplace. He came the day after the inspection to do a repair and set me up for a wood burning fireplace. I will call him the next time I need work on the fireplace or chimney.”
    Nita S.
    Yelp
Where We Work

Proudly Serving Los Angeles

Based in Sun Valley, we reach homeowners across the greater Los Angeles area. If you’re in the LA area, we’ve got you covered.

Los Angeles, Pasadena, Burbank, Altadena, Sierra Madre, Alhambra, Glendale, San Fernando, West Hollywood, Beverly Hills, Santa Monica, Culver City, Marina del Rey, El Monte, Malibu, Pacific Palisades, Bel Air, Santa Clarita

Chimney Tips & Resources

Know More, Improve Comfort

Stay informed about your chimney with tips from our team. A little knowledge goes a long way toward avoiding costly repairs and improving home comfort.

More Resources

"*" indicates required fields

Get In Touch

A Practical Upgrade For Your Home

Adding a wood fireplace insert is a great way to boost your property’s overall comfort while maximizing your heating output. Our dedicated technicians handle the entire setup process with genuine respect for your space. Contact Mr. Chimney Sweep Service today to get started.

When a traditional chimney setup isn’t a fit for certain installations, we often recommend the simplicity and modern convenience offered by electric fireplaces.