Installing an electric fireplace insert is an incredibly simple, low-maintenance way to breathe new life into a drafty, old masonry hearth. Because these units do not require venting, gas pipelines, or chimney flues, the installation process typically involves measuring your opening, closing your fireplace damper to seal out drafts, sliding the unit into place, and plugging it in. Check out our comprehensive Fireplace Insert Buying Guide to lock down your layout dimensions, or browse our active selection of premium Electric Fireplace Inserts to upgrade your home today.
How to Install an Electric Fireplace Insert: A Comprehensive Guide
Convert Your Drafty Brick Hearth Into a High-Efficiency Zone Heater
Installing an electric fireplace insert is an incredibly simple, low-maintenance way to breathe new life into a drafty, old masonry hearth. Because these units do not require venting, gas pipelines, or chimney flues, the installation process typically involves measuring your opening, closing your fireplace damper to seal out drafts, sliding the unit into place, and connecting it to a safe power supply.
Unlike traditional wood or gas retrofits that call for complex structural modifications, an electric appliance keeps 100% of its convective heat inside your living space while completely eliminating the hassle of cleaning cold ash or arranging heavy firewood. However, achieving a professional, built-in appearance requires calculating your firebox clearance margins, planning your circuit distribution, and masking raw brick gaps with a tailored perimeter surround.
To map out your project dimensions or explore easy-to-install design configurations, look through our full online inventory of premium Electric Fireplace Inserts. If you run into infrastructure hurdles or decide a gas line setup suits your current layout better, you can browse our high-efficiency Gas Fireplace Inserts or read our expert Fireplace Insert Buying Guide within the technical Learning Center to finalize your home renovation blueprints today.
What are the main challenges when planning a DIY electric fireplace insert installation?
While mounting an electric fireplace insert inside an existing masonry opening eliminates the need for complex structural framing, navigating precise clearance margins and electrical power delivery can still be challenging. Because step-by-step procedures vary depending on whether your model features a simple plug-in cord or a heavy-duty hardwired terminal block, verifying your firebox dimensions before purchase is essential to avoid common setup mistakes.
Ensuring your cavity is clean, draft-sealed, and perfectly matched to your appliance ensures a seamless home improvement project. To explore high-quality configuration options that fit comfortably into standard openings, browse our full collection of premium Electric Fireplace Inserts or read our expert Fireplace Insert Buying Guide to finalize your layout.
Why should you choose an electric fireplace insert to modernize an old brick hearth?
If you want to end the hassle of sweeping cold ash, carrying heavy firewood, or paying for yearly chimney inspections, an electric fireplace insert is the ideal solution. Traditional open brick fireplaces lose up to 90% of their heat straight up the roof chimney, but these modern units reflect 100% of their clean convective warmth directly back into your room. They slide seamlessly into your empty masonry firebox, allowing you to enjoy the realistic visual appeal of an active fire all year long without any of the drafty energy loss. To review how these installations help lower your household utility costs, explore our in-depth analysis on Are Electric Fireplaces Energy Efficient?.
Can I Install my Electric Fireplace Insert Myself?
The first question you'll need to consider is whether this is a project you can do on your own or if you'll need to hire a professional to install your electric fireplace. If you've got a solid set of carpentry and DIY skills, it's likely you can do most, if not all, of the installation yourself. The main complicating factor is the fireplace's electrical supply.
If the fireplace uses a simple wall plug and your fireplace opening has an outlet in it (or near enough) already, then setting up your new electric fireplace insert is as simple as plugging it in. However, many advanced premium models require hardwiring directly to your home's main electrical panel. In that case, we highly recommend working with a licensed electrician to complete the hookup safely. If you run into hurdles or decide a gas line model suits your current infrastructure better, browse our high-efficiency gas fireplace inserts or check out our Contact Page to speak directly with our product specialists for guided support.
What Size Should my Electric Fireplace Insert Be?
To ensure your new fireplace looks great and operates safely, you'll need to follow the manufacturer's recommended clearances, which you'll find listed in the owner's manual. These measurements tell you how much space should be left clear between the fireplace and the opening you're placing it in. Generally speaking, these clearances will be somewhere between ¼"" and 3"".
For best results, we recommend purchasing a fireplace that is as large as possible while respecting these clearances. This will ensure that your new electric fireplace insert will look impressive and natural. Many models will either include or can be upgraded with a trim kit that can help bridge the gap between the edges of the insert and the edges of the fireplace opening, ensuring a polished look. Check out the specific product details on any model you're considering for more info.
How Much Power Does an Electric Fireplace Use?
A 120-Volt electric fireplace insert will draw about 1,500 watts at 12.5 amps. This will include all plug-style electric fireplaces. If you choose a larger, hardwired fireplace, it will likely be a 240-Volt model that draws 2,800 watts at about 12 amps. The exact details for each fireplace model may vary a bit, so we always recommend checking the owner's manuals you can find on our website for whichever fireplace you're thinking of buying. For more detail about electric fireplace energy costs, check out our in-depth guide: Are Electric Fireplaces Energy Efficient?
Tips for Installing an Electric Fireplace Insert![]()
Take accurate measurements of the firebox before purchase:
To ensure you buy the right size of electric fireplace, you'll need accurate measurements of the firebox. Measure the height, depth, front width and back width to determine how large of an electric fireplace insert you need.
Inspect the chimney and fireplace opening before installation:
While electric fireplaces don't require ventilation, an electric fireplace insert is generally installed in an existing fireplace, which means there will be a masonry firebox and chimney in place. It's a good idea to place a cover plate on your chimney to keep water out and close and seal the damper to prevent drafts when installing an electric fireplace insert.
Use a trim kit to complete the installation:
Many electric fireplace inserts can be upgraded with a trim kit that makes it easy to provide a polished-looking front. While shopping for a new fireplace insert, be sure to consider whether you're interested in adding a trim kit and check whether one is available.
Electric Fireplace Insert Installation Help
If you've got more questions about your electric fireplace installation, our expert team may be able to help. Give us a call at 877-374-2070 between 8 am and 5 pm Central Time Monday through Friday, to talk to one of our product specialists about your electric fireplace needs. In addition, you can take a look at our helpful Learning Center to get more info about all types of fireplaces.
Looking for more help with installing an electric fireplace?
What are the main electrical requirements for an electric fireplace insert?
A standard plug-in 120-Volt electric fireplace insert pulls roughly 1,500 watts and 12.5 amps of electricity on its highest setting, meaning it should always be connected to a dedicated wall circuit to prevent overloading your electrical panel. If you opt for a high-output 240-Volt built-in model, the system will draw approximately 2,800 watts and 12 amps, requiring a dedicated, hardwired line installed by a licensed electrician. To better understand how these power requirements impact your seasonal energy bills, check out our in-depth analysis: Are Electric Fireplaces Energy Efficient?.
How do you seal and insulate an old chimney when installing an electric insert?
Before sliding your new electric fireplace insert into place, you must close and securely seal the chimney damper, and we strongly suggest installing a weatherproof cap plate over the roof opening. Because electric inserts do not vent heat upward, leaving the chimney flue open will cause heavy drafts that pull warm room air right out of your home. Sealing the cavity traps your zone heating where it belongs while keeping outdoor moisture and pests away from your new appliance. For more structural optimization advice, view the troubleshooting guides available in our Learning Center.
Do you need a decorative trim kit when installing an electric fireplace insert?
While a trim kit is not mechanically required for the heater to run, adding one is highly recommended to bridge the 1/4-inch to 3-inch clearance space required around the edges of the chassis. A premium perimeter trim kit fastens directly to the face of your appliance, cleanly masking the raw edges of your old brick opening and providing a polished, professional finish that makes the installation look like a custom piece of architecture. If you'd like to compare how these surrounds dress up a wall compared to gas setups, feel free to explore our collection of high-efficiency gas fireplace inserts for premium design ideas.
Complete Your Electric Fireplace Insert Project Safely
Upgrading a dusty, high-maintenance wood fireplace with a clean electric fireplace insert is one of the smartest ways to inject modern luxury and efficient zone heating into your home. By taking precise dimensions of your firebox interior, sealing off your old chimney flue against structural drafts, and matching your electrical connection type to a dedicated power source, you can complete this project with total confidence. Take your time to review the manufacturer guidelines, consider an elegant trim kit to polish the edges, and look forward to an instantly cozier home.
Shop Premium Electric Fireplace Inserts at Fireplaces Direct
Ready to say goodbye to messy soot and embrace effortless, on-demand heat? Explore our complete online inventory of high-performance Electric Fireplace Inserts today to discover premium, easy-to-install options from top-tier industry brands. If you prefer alternative fuel types, you can also browse our advanced line of high-efficiency Gas Fireplace Inserts to find your perfect fit. Have a question about sizing or electrical lines? Contact Our Product Experts today to start planning your perfect home hearth upgrade!
Frequently Asked Questions
1. Can I safely place a television directly over a recessed electric insert?
Yes. Because an electric fireplace insert pushes its warm air forward out of a front-facing vent rather than directing heat straight upward, it keeps the surrounding wall face cool. This localized heating pattern makes them incredibly safe to sit beneath sensitive electronics, provided you maintain a standard 12-inch gap between the units.
2. What should I do if my masonry fireplace floor is uneven or sloped?
To ensure your insert sits completely level and centered, you can place non-combustible composite shims or a level steel plate along the base of the brick firebox before sliding the appliance inside. A level base keeps the interior flame screens and fan motors operating smoothly without vibrating.
3. Is it safe to leave an electric fireplace insert running overnight?
Yes, modern electric hearth appliances are built with automatic overheat protection sensors that instantly kill the power grid if the internal temperatures climb too high. However, to save energy and extend the operating life of your blower fan, it is always best to set the integrated sleep timer so the unit shuts down automatically after you go to bed.
4. Can I use an extension cord to power my new fireplace insert?
No, you should never connect an electric fireplace insert to a standard household extension cord or surge protector strip. These heating appliances draw a continuous high amperage that can quickly melt standard extension wires, presenting a severe home fire hazard. Always plug the unit directly into a grounded wall receptacle.
5. Can I run the flame imagery without turning on the heating element?
Absolutely. One of the best design features of modern electric units is that the LED flame patterns operate independently from the internal heating elements. This lets you enjoy a soothing, romantic fire ambiance on warm summer nights without adding any extra heat to your living area.
6. What are the most common installation mistakes people make during a DIY build?
To avoid common pitfalls like buying incorrect trim sizes, placing units on shared circuits, or blocking your front blowers, read our comprehensive guide to common installation mistakes before initializing your build.
Key Takeaways
-
No Ventilation Needed: Because they use clean electric heat elements, these inserts emit zero smoke or exhaust, meaning you can completely close and seal your chimney flue to block room drafts.
-
Electrical Checklist: A standard 120-Volt model plugs directly into any standard wall outlet, while more powerful 240-Volt zone heaters require dedicated hardwiring from a licensed electrician.
-
Proportional Fit: Always measure your firebox’s front width, back width, height, and total depth before purchasing to guarantee a minimum clearance margin of 1/4 to 3 inches around the perimeter.
-
Seamless Finishes: Upgrading your setup with a dedicated surround or trim kit easily masks any leftover gaps between the appliance frame and the raw masonry walls for a sleek, built-in appearance.
