Skip to content

Napoleon Ascent X 42 Direct Vent Gas Fireplace | GX42 |

Original price $2,849.00 - Original price $3,437.00
Original price $2,849.00
$3,149.00 - $3,849.00
Current price $3,149.00

Now Available! Additional images coming soon. Please call or email with any questions.

Free Shipping Tax Free Authorized Napoleon Dealer

The AscentX 42 gas fireplace offers you a wide range of heat output and control with a remarkable flame/heat adjustment. The PHAZERAMIC advanced burner technology with infrared ember bed produces stunning YELLOW DANCING FLAMES. With a large viewing area, a realistic PHAZER log set that is rich in color and detail, the AscentX 42 is a one of a kind fireplace that you will be proud to have friends and family notice.

Ascent Series Brochure

GX42 Owner's Manual


Napoleon Ascent X 42 Direct Vent Gas Fireplace | GX42 | Technical Details


Product Details

Fuel Type: Gas
Vent Type: Direct Vent
Vent Size: 5x8
Ignition Type: Electronic
Installation Type: Zero Clearance
Style: Traditional
Vent Inner Diameter: 5 Inches
Vent Outer Diameter: 8 Inches
Weight: 118 lbs.
Model: Natural Gas (NG) Propane (LP)
Max. (BTU/HR): 30,000 BTU's 30,000 BTU's
Min. (BTU/HR): BTU's BTU's
Napoleon Ascent X 42 Direct Vent Gas Fireplace | GX42 | Dimensions


Actual Dimensions

Height Width Depth
407/8" 42" 185/16"

Framing Dimensions

Height Width Depth
411/8" 421/2" 189/16"

Technical Drawings

For more detail please see the Installation Manual

GX42 Technical Drawing 1
GX42 Technical Drawing 2


1. Do I need to purchase a panel or trim kit with the fireplace?

No, these are optional accessories to enhance the look of the GX42. The fireplace can be purchased without adding any additional features, although most customers prefer to add a panel and trim kit to complete the look and feel of the installation.  You can find all the available trim kits, decorative fronts and interior panels on the accessories page

2. How will the fireplace be delivered? Will the delivery driver bring it into my house?

All fireplaces are delivered via freight (tractor trailer truck) to the specified street address you provide us, we do provide free lift gate service with all freight deliveries. The delivery driver is only responsible for unloading the items from the truck, not to move them anywhere. For more information on the delivery process visit our FAQ page.

3. The picture shows logs, are those included?

Yes, the logs are included with the GX42. Their are also shore fire and beach fire kits available which replace the logs with stones and/or driftwood. You can find these on the GX42 Accessories page.

4. How is the fireplace vented?

The GX42 is typically vented using Napoleon's 5x8 venting components, you can find them here. If you need help designing the venting system let us know with an email or a phone call and we can assemble a custom solution for your situation.

5. Have another question? Call, email, chat or use the question and answer system below. (844)635-5499

Questions & Answers

Have a Question?

Be the first to ask a question about this.

Ask a Question

Warning CA residents-Prop 65