White brick, wood mantel
The same insert in a lighter room. The trim kit does the same job either way: it covers whatever the old opening shows around the 25-inch unit.
Priced as a package
Existing fireplace · Calgary
Your old fireplace, lit again.
A Dimplex Optimyst Revive drops into the opening you already have: a 25-inch water-vapour insert with its own refill drawer and a fan heater. No gas, no chimney, no venting. The gas gets capped, the flue gets blocked, a circuit goes in, and the hearth is a fire again.
Concept render
The Revive in an old brick opening. A concept render made from Dimplex's product photos of the unit, not a photograph of an install; real installs replace it as they are photographed.
What goes in
One unit, made for this job.
The Revive is the only Optimyst built as an insert. It comes with a charred log set, a remote, and the drawer that makes it a no-plumbing appliance.
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Optimyst Revive
Revive 25 in insert
ABN15-RGB-AM- Size
- 25-1/4 × 24-15/16 × 12-13/16 in
- Needs
- minimum opening 25-1/4 wide × 25 high × 12 deep in
- Water
- pull-out drawer with a refillable tank; filtered or decalcified water
- Heat
- Yes. fan-forced heater, on demand, up to 1,000 sq ft (sell sheet); flame-only mode for the rest of the year
- Air
- the air inlet under the drawer must stay clear; an extra 16 in² path to the underside of the unit is recommended for the best flame
- Power
- 120 V, 1,250 W, hardwired, 3-wire, into the opening
$2,699.99MSRP, CAD, June 2026 listNot yet on file: BTU output (not printed); tank capacity and run time; weight. We confirm these from the manual at the site visit.
Trim kits on the price list: 36 × 32 in (REV36X32, $262.99) and 40 × 35 in (REV40X35, $272.99). If your opening is larger than 40 × 35, or you want stone or steel instead of the kit, the facing is quoted.
How it's built
How it goes in.
Front view: the insert in the old opening, the trim kit around it, the chimney sealed above, the gas capped and the circuit inside. Every figure is from Dimplex's Revive manual.
What the trim kit is for.
Almost every old opening is bigger than the Revive. Dimplex's trim kits (36 by 32 or 40 by 35 inches) are flat black frames that cover the gap between the insert and the brick, so the finished look is the insert sitting cleanly in the wall. Past 40 by 35, or if you would rather have stone or steel there than a black frame, the facing is quoted and built to the opening.
The mantel stays. Nothing sits directly over the flame, and the shelf is a shelf again.
The job
What's included, and what it costs.
Three trades touch this: a gas fitter, an electrician, and us. You deal with one person and one number.
- The site checkWe measure the opening (width, height, depth), look at where the panel is, where the gas comes in and where the drafts are, before anything is ordered.
- The gasThe old appliance disconnected and the line capped inside the opening by a licensed gas fitter, with the permit.
- The chimneyCleaned and blocked off, as Dimplex's manual requires, so no cold air falls on the flame and no warm air leaves.
- The powerA 120 V circuit run into the opening by an electrician, dedicated 15 A as Dimplex recommends, permit included. Most old openings have no power in them.
- The insertRevive set, levelled and wired; the trim kit fitted; the log set placed; first fill with filtered water; remote paired.
- The walkthroughFilling, the monthly clean, the heater modes, and a card for the drawer so it sticks.
Before you decide
What living with a Revive is like.
- You fill it by hand.
The tank is in the drawer at the bottom. Filtered or softened water, because Calgary's is hard and scale thins the flame. The unit beeps when it is low and drops to a low-water mode. How long a fill lasts depends on the flame setting; Dimplex's Revive documents on file do not print a figure, so we don't either.
- There is a monthly clean.
Dimplex's manual: top cover, reservoir, tank and transducer washed with soap and water at least once a month, more often with hard water. A few minutes at the kitchen sink.
- The opening has to be big enough.
At least 25-1/4 in wide, 25 in high and 12 in deep. Most are. If yours is smaller, masonry can sometimes be opened up, but that is a different job and we would tell you before quoting.
- The heat is a supplement.
1,250 W, up to 1,000 sq ft according to Dimplex's sell sheet, on demand. It is a good space heater's worth. The rest of the year you run flame only.
- The chimney gets sealed.
Not removed, sealed. Cold air falling down an open flue flattens the flame and takes your heat with it, so Dimplex requires the chimney cleaned and blocked before install.
- It usually needs a new circuit.
Old openings rarely have power. A dedicated 15 A run from the panel is the normal case and is in the price range above.
- Nothing sits above the flame.
The vapour rises a short way and dissolves. Keep the mantel shelf clear directly over the flame; a TV above follows the TV maker's over-heater rule, and we plan the height at the site visit.
- Bigger openings need a facing.
The trim kits reach 40 × 35 in. Past that, or if you want stone or steel, the surround is quoted, and it is often the nicest part of the job.
See it in my space
Send a photo of the fireplace.
Stand back far enough to get the whole opening in, and put a tape measure across it if you can. You get the picture back with the Revive in it, plus a price range for your opening. Usually within a couple of days.
- Take one photo of the wall, opening, counter or corner from where you usually sit. Phone is fine.
- We place the right unit for your depth, water and heat answers and send the picture back, labelled as a concept.
- You get a rough price: the unit at list price, the build as a range, and what a site visit would confirm.
Your photo is used only to make your render and is not shared. Prefer email? hello@mistfire.ca
Questions
Questions people ask about the Revive.
Will the Revive fit my fireplace?
It needs an opening at least 25-1/4 inches wide, 25 inches high and 12 inches deep, per Dimplex's manual. Most masonry and prefab openings are bigger than that, and the trim kit covers the difference up to 36 by 32 or 40 by 35 inches. Measure width, height and depth, or send a photo with a tape in it, and we tell you.
What if my opening is bigger than the trim kit?
Then the gap around the insert gets a facing: a steel or stone panel, or the opening is partly closed in and finished to match. That is quoted, usually a few hundred dollars up to a couple of thousand for stone.
Do I still need the chimney?
No. Dimplex's manual says the chimney should be professionally cleaned and blocked off before the insert goes in, so cold air stops falling onto the flame and heat stops escaping. The chimney stays where it is; it just stops being a hole in your house.
What happens to the gas?
A licensed gas fitter disconnects the old appliance and caps the line inside the opening, with the permit that goes with it. It is a small job and it is part of our price.
Does it heat?
Yes. The Revive has a 1,250 W fan heater, on demand, for up to 1,000 sq ft according to Dimplex's sell sheet, and a flame-only mode for the other nine months. It is a supplement, like a good space heater, not a replacement for a furnace.
How often do I fill it?
The water lives in a pull-out drawer at the bottom, and you top it up by hand with filtered or softened water. How long a fill lasts depends on the flame setting; Dimplex's Revive documents on file do not print an hours figure, so we will not guess one here. The unit beeps and drops to a low-water mode when it is time.
Do I need an electrician?
Yes. The Revive is hardwired to a 120 V circuit inside the opening; Dimplex recommends a dedicated 15 A circuit and requires one if the breaker trips with the heater on. Most old fireplace openings have no power in them, so this is usually a new run from the panel, permit included.