Short answer: The Dimplex Ignite Aspire 48 is a large built-in electric firebox with the proportions of a grand traditional fireplace: a viewing area 48 in. wide and 40 in. tall. It needs no venting or gas, has glowing logs and fire sound, and carries a five-year parts and service warranty. It is a statement piece for a big wall, it needs a deep framed opening, and it is not an insert for an existing fireplace.
Specifications at a glance
| Model | Ignite Aspire 48 (ASP48) |
|---|---|
| Product dimensions | 48 15/16 in. W x 49 1/2 in. H x 17 1/2 in. D |
| Framing opening | 48 3/4 in. W x 50 in. H x 18 in. D |
| Viewing area | 48 in. W x 40 in. H |
| Heat at 120 V | 1,500 W / 5,118 BTU |
| Heat at 240 V | 2,500 W / 8,530 BTU |
| Wiring | Direct wire |
| Use | Indoor only |
| Warranty | 5 years parts and service |
Figures from Dimplex's published specifications for the ASP48, as listed on our product page. Follow the installation guide that ships with your unit.
What makes it different: the scale
Most electric fireplaces are long and low. The Aspire is built like a gas or wood firebox: tall, deep and meant to be framed into a mantel surround or a feature wall. At the 48 in. size the glass is 40 in. high, which is larger than most real fireplaces.
The fire uses Dimplex's Dynamic-Fire effect with three natural flame colors that can be combined, logs with an inner glow that pulses with the ember bed, and three crackling sound options. The logs can be repositioned.
The heat
The heater is 1,500 W on 120 V or 2,500 W on 240 V, the same as the rest of the Ignite range. In a room big enough for a 48 in. firebox, treat that as supplemental warmth. The heater can also be permanently disabled if you only want the flame. See our electrical requirements guide.
Installation
Frame the opening at 48 3/4 in. wide, 50 in. high and 18 in. deep. That is a substantial cavity: plan a chase or a deep surround. It can be installed fully recessed and front-facing, or with open sides using a separate trim kit. The unit is direct-wired by a licensed electrician.
It is a built-in firebox, not an insert. It is not designed to slide into an existing masonry fireplace. If you are converting an old fireplace, read replacing a gas fireplace with electric and send us the opening dimensions first.
Limitations to know before you buy
- It needs an opening 50 in. high and 18 in. deep.
- It is indoor only and direct-wired.
- It is the most expensive size in the range, with the same heater as the smallest.
- It ships at about 220 lb, so plan for help at delivery.
Price
As of October 2026 the Ignite Aspire 48 is $7,769.99. The range also comes in 30, 36 and 42 in. sizes from $4,514.99. See the Ignite Aspire 48 product page.
Who should buy it
A good fit if you are building a large feature wall or mantel surround and want the presence of a full-size traditional fireplace without gas or a chimney.
Look elsewhere if you want the traditional look at a lower price or in a shallower wall: see Ignite Aspire vs Revillusion.
Frequently asked questions
How big is the Ignite Aspire 48?
The firebox is 48 15/16 in. wide, 49 1/2 in. high and 17 1/2 in. deep, with a 48 in. by 40 in. viewing area.
Can it go into my existing fireplace?
It is a built-in firebox, not an insert, and it is taller than most existing openings. Send us your dimensions and we will tell you what fits.
Does it need venting?
No. It is electric and needs no vent, chimney or gas line.
Can I use it without heat?
Yes. The flame runs without the heater, and the heater can be permanently disabled.
Planning a feature wall? Send us the wall size and we will confirm the framing. Call 877-879-9191 or contact us.
Sources: Dimplex published specifications for the Ignite Aspire ASP48. Electrical codes vary by jurisdiction. This article does not replace the manufacturer instructions or a licensed electrician.