"Retired librarian. The amber flame is what I use every night. My grandkids ask for the blue flame at Christmas and the purple one on Halloween. It is not what I bought it for but it is what makes it feel like the room has different moods."
Deborah H. — Vermont
"Retired firefighter. Bought it for the mountain cabin. ETL certified, cool-touch glass, overheat shutoff - all the certifications and design details we specified in code. The three flame colors were a bonus I did not know I wanted."
Marcus D. — New Hampshire
"1970s ranch. Fits my existing mantel cutout with room on both sides. White remote, touch buttons on the top, no app to configure. Blue flame at 5 pm in the winter looks better than any TV screensaver I have ever seen."
Linda R. — Ohio
The Prism Insert
The Prism Insert
IN STOCK — SHIPS WITHIN 1 BUSINESS DAY
1400W. 23-inch insert. 3-color log flame. 400 sq ft. ETL certified.
Regular price
$324.95
Regular price
$568.95
Sale price
$324.95
Unit price
per
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- 3 Flame Colors: Amber, Blue, Purple + 3-Level Brightness
- 400 sq ft. 23 in wide. 7 in deep.
Product Details
Product Details
- Heating element: resistive-coil convection heater with front-strip vent, self-regulating
- Power: 1400W, 5,000 BTU, 120V / 60Hz
- Coverage: up to 400 sq ft
- Overall dimensions: 23" wide × 7" deep × 18" tall
- Distinctive feature: 3 selectable flame colors (amber, blue, purple) with 3-level brightness for each
- Materials: steel and iron housing, tempered glass front, molded log bed with LED-lit multi-color flame
- Installation: drops into existing fireplace opening / TV console cutout / cabinet cutout, or sits freestanding on a hearth stone (no wall-mount bracket needed)
- Flame: realistic log flame effect in 3 colors (amber / blue / purple), each with 3-level brightness (low / medium / high)
- Modes: flame + heat, flame only
- Controls: white handheld remote + front-panel touch buttons
- Timer: 0.5-7.5 hours in half-hour increments
- Thermostat range: 62°F - 82°F, adjustable in 1°F steps
- Noise: quiet operation - low fan noise
- Safety: overheat shutoff, cool-touch tempered glass front, ETL certified
Shipping & Delivery
Shipping & Delivery
Ships from the USA – Our orders ship from US fulfillment warehouses in California, Illinois, and New Jersey, based on the closest distribution center to your address.
📦 Order Processing – 1-2 business days from order placement.
🚚 Shipping Time – 3-5 business days from ship date via FedEx Ground or OnTrac (carrier selected by route).
📍 Free Shipping – Continental US, all orders.
📩 Full Tracking Included – You will receive an automatic tracking email the moment your order ships, with delivery updates along the way.
Questions before it arrives? Just reach out.
30-Day Return Window
30-Day Return Window
30-Day Return Window - Request a return within 30 days of delivery. Approved returns pay a 25% restocking fee unless the unit arrived defective. If defective, we cover the return and send a replacement or full refund.
Damaged in transit? Photograph the box and unit, email us within 48 hours, and we handle the freight claim and replacement.
What is not covered: shipping cost on non-defective returns; damage from installation into an opening the unit was not sized to fit (check the 23"W × 7"D × 18"H dimensions against your opening before ordering).
"Retired librarian. The amber flame is what I use every night. My grandkids ask for the blue flame at Christmas and the purple one on Halloween. It is not what I bought it for but it is what makes it feel like the room has different moods."
Deborah H. — Vermont
"Retired firefighter. Bought it for the mountain cabin. ETL certified, cool-touch glass, overheat shutoff - all the certifications and design details we specified in code. The three flame colors were a bonus I did not know I wanted."
Marcus D. — New Hampshire
"1970s ranch. Fits my existing mantel cutout with room on both sides. White remote, touch buttons on the top, no app to configure. Blue flame at 5 pm in the winter looks better than any TV screensaver I have ever seen."
Linda R. — Ohio
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📋 What's Included
⭐️ Customer Reviews
❓ FAQ
Real Living Rooms. Real Cold Winter Nights. Three Flame Colors, One Insert.
You have an existing mantel surround, a TV console cutout, or a sealed-off fireplace opening 23 inches or more across. You do not want to gut it, hire a contractor, and pay $2,000 for a real insert. That is what this is for.
4 Things We Care About
100,000+ Warm Living Rooms. And Counting.
Over 3,200 verified 5-star reviews — and counting.
Built to Last, Not to Impress
Built for the Existing Fireplace, the TV Stand, and the Long Winter Evening. In Three Colors.
Iron and steel housing. Tempered glass front. Three selectable flame colors - amber, blue, purple - each at 3 brightness levels. 1400W, 5,000 BTU, self-regulating. Front-strip vent design pushes warm air out the top so the glass stays cool to touch and nothing hot faces the room. One person can carry it in from the porch and lift it into an opening without help.
Slide it in tonight. Warm the room while amber, blue, or purple log flames dance behind tempered glass. The mantel you sealed off years ago is finally doing something again — in your choice of three colors.
Drop It In. Plug It In. Warm the Room. Pick a Flame Color. Tonight.
Measure your existing opening against 23"W x 18"H x 7"D. If it fits, slide it in - the mounting flanges on the corners will screw into wood if you want it locked, otherwise gravity holds it. Plug into a standard wall outlet on its own circuit. Point the white remote. Pick amber, blue, or purple flame - and one of three brightness levels for each.
No wall bracket to anchor into studs. No drywall to cut. No contractor. No inspection.
Real homeowners. Real heat.
Retired librarian. Amber every night. Blue for Christmas. Purple for Halloween.
"Our 1970s farmhouse mantel had a wide brick opening we capped years ago. The Prism Insert slid straight in. Amber flame is what I use every evening - looks exactly like the traditional log fire I grew up with. But at Christmas my grandkids pester me to switch it to blue - it matches their nativity lights. Halloween they want purple. It is a small thing but three flame colors turned out to be worth it in ways I did not expect."
Vermont
Retired firefighter. 40 years in the trade. All the certifications I check for. Amber flame with the log detail sold it.
"Retired fire captain, 40 years. I read the spec sheet - ETL certified, tempered cool-touch glass, overheat shutoff, front-strip vent so nothing hot faces the room - all the design details we specified in code. Bought one for my mountain cabin. Sits freestanding on the flat bluestone hearth from an old wood stove we pulled out. Amber log flame at dusk convinces anyone who walks in the door. The blue and purple options I did not think I needed - my daughter switches it to blue when she visits and it changes the whole room."
New Hampshire
1970s ranch. Fits my existing masonry cutout with room on both sides. Blue flame at 5pm in winter is the best TV screensaver I have ever had.
"Ranch house I bought in 1998. Original masonry fireplace opening, wide - measured 25 inches across. Been decorative-only since we capped the flue. The Prism Insert at 23 inches wide slid in with room to spare on both sides. White remote works from the couch, touch buttons on the top. Standard amber flame most nights - looks like a real fire from across the room. But at 5pm in December with the sun already down, I switch it to the low-brightness blue and the whole living room feels calmer somehow. Better than any TV screensaver."
Ohio
Real Reviews From Real Customers
★★★★★
Customer Photos
★★★★★
Slid it into our 1970s brick surround. Amber every night, blue for the holidays.
Wide 1970s brick fireplace surround, capped since 2010 when the chimney needed a rebuild we never paid for. My daughter helped me carry the Prism Insert in and we slid it into the existing opening. Amber flame is what I use every evening - looks like the traditional log fire we used to have before we capped the flue. But my grandkids treat the blue and purple flames like magic - they ask for blue when they come over at Christmas, purple on Halloween. Three flame colors are not what I bought it for but they turned out to be worth it.
★★★★★
Retired. Wanted controls I understood. White remote and touch panel only.
Every space heater I looked at came with an app requirement. I do not want an app. I am 69. I want a button, a remote, and a knob if possible. The Prism has the small white remote, has touch buttons on the top strip, no app, no WiFi setup, no Alexa. My husband and I set the thermostat to 72 with the remote from the couch and the flame comes on. When we go to bed we press the power button on the top. That is the entire user manual.
★★★★★
Retrofit into a TV console cutout. Perfect 23-inch fit. Purple flame at Halloween.
Bought a large media console from a big-box store six years ago. It came with a rectangular fireplace-insert cutout in the middle, sold with an optional insert we never bought. That empty rectangle has annoyed my wife for six years. Measured it at 25 x 20 - The Prism at 23 x 18 slid right in with an inch of margin on each side. Held in by gravity and the flat back of the console. Wife is happier. Kids figured out how to change the flame color to purple within about a day and now it is stuck on purple every October.
★★★★★
Contractor quoted $2,800 for a gas insert. This was $325.
The masonry fireplace in our 1970s ranch has been sealed since 2012 - the chimney needed a full rebuild we were not going to pay for. Contractor came out to quote a gas insert conversion: $2,800 for the insert, $1,600 for the gas line, plus permit inspection. About $4,700 total. I ordered The Prism Insert for $325 and it slid straight into the existing opening. Plug in a nearby outlet. Done. Yes it is an electric log flame not real gas, but the amber setting looks convincing at normal viewing distance and I get two extra flame colors thrown in. At about 7% of the cost and no permit, I can live with the tradeoff.
★★★★★
HVAC tech. 1400W verified with a clamp meter. Warms my 350 sq ft office.
HVAC / electrical tech, 22 years in the trade. Put a clamp meter on the plug: reads 11.8A at 120V under load = ~1416W. Label says 1400W. Close enough. Coverage rating is 400 sq ft - I put mine in my 350 sq ft home office and it goes from 62 to 72 in about 20 minutes and holds it. Blower is quiet - I do not hear it over my keyboard from 6 feet away. The three flame colors are a novelty that I actually use - amber for real work, blue when I want the room to feel less warm than it actually is.
★★★★★
Guest bedroom retrofit. Amber flame on low all night. Guests love it.
Small guest bedroom in our old farmhouse has an original painted-white brick fireplace opening - long since sealed. Fit The Prism Insert into the opening and set the amber flame on low, thermostat 68. First guests to use the room this winter were my in-laws over Thanksgiving. They came out of the room the first morning saying "your guest room is the coziest room in the house now." That is quite a compliment given my mother-in-law's standards.
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Sign In to ContinueSame insert family, different width and interior look. The Firebox is 18 inches wide with a plain black interior. The Brickstone is 26 inches wide with distinctive red brick interior walls. The Prism Insert is 23 inches wide with a plain black interior BUT three selectable flame colors (amber / blue / purple) at 3 brightness levels each. All three drop into existing openings and use the same 1400W element. Pick The Prism Insert if you want the flame-color options AND your existing opening is 23 to 25 inches wide. Pick The Firebox if your opening is narrower or the color options do not matter. Pick The Brickstone if your opening is 26+ inches AND you want the red brick backing to visually blend with an existing brick or stone surround.
No. It is an LED-lit visual effect behind a tempered glass front, with a molded resin log bed that lights up in amber, blue, or purple. The amber flame is convincing at normal viewing distance in evening light. Blue and purple are stylized - they do not attempt to look like real fire, they look like decorative light. That is the tradeoff: you get a warm glow with no smoke, no ash, no chimney inspection, no wood to haul, plus two extra colors you can pick for mood.
Any opening at least 23" wide, 18" tall, and 7" deep with a wall outlet within cord reach. Common installs: an existing sealed-off masonry fireplace, a TV console with a fireplace-shaped cutout, a cabinet or built-in with a rectangular opening, or freestanding on a flat hearth stone / raised platform. There is no wall-mount bracket - this product is not designed to hang on a bare wall. If your opening is narrower, look at The Firebox instead. Do NOT install into a working chimney flue where a real fire has ever burned - the flue soot could damage the electronics.
Wipe the tempered glass front with a soft dry cloth every few weeks to keep dust off the flame view. Occasionally vacuum the front-strip vent with a brush attachment to keep dust from building up on the heating element. Do not use liquid cleaners or sprays anywhere near the vent or the top control panel. Do not open the housing - there are no user-serviceable parts inside.
The flame-only mode (no heat) draws roughly 12-14W - about the same as a nightlight - and is designed for that. The heat mode should not be left running unattended, ever - that's true of any space heater. Use the 0.5-7.5 hour timer if you want the heat to run for a set period and then shut itself off. Never leave heat mode on when you leave the house or go to sleep.
At 23 x 18 x 7 inches it will physically fit in a large RV or fifth-wheel with a built-in fireplace cutout. Draw is 1400W (about 12A at 120V), which means it needs its own dedicated circuit and will not run off a small inverter or off-grid solar setup unless you have significant generator capacity. If your generator is 3000W+ continuous, it will run fine. Small 1000W-1500W inverters cannot handle it.
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Still Have Questions? Talk to Us.
Another cold night is coming. You already know what it feels like.
Every 1500W-class heater on the market makes the same heat. What differs about this one: 23 inches of realistic amber log flame behind tempered glass, plus optional blue and purple flame colors at 3 brightness levels each - dropping straight into the existing fireplace opening, TV console cutout, or cabinet opening you already have. No contractor. No permit. No app to configure. Plug it in tonight and the room finally feels the way you wanted it to feel.