$0.00 0

Cart

No products in the cart.

$0.00 0

Cart

No products in the cart.

Expert Support

High Standards

Fast Shipping

In Stock
  • Authorized Dealer

Napoleon Altitude X 42″ Direct Vent Fireplace

Item #: AX42NTE-2

SKU:

Price range: $4,449.00 through $5,637.00

The Napoleon Altitude X 42" is a clean-face direct vent gas fireplace with a full view of the fire: 38,000 BTU/hr on natural gas or 36,500 on propane, high-definition PHAZER log kits in Split Oak...

See Full Product Description

  • Expert Support
  • Secure Checkout
  • Warranty Included
  • Reliable Delivery
Venting required: manufacturer-listed vent system

This fireplace must be installed with the proprietary chimney / vent system the manufacturer lists for this exact model — generic pipe is not allowed. The approved system, sizes and maximum runs are in the manufacturer's installation manual. Call us and we will spec the exact listed vent kit for your layout.

Not sure which pieces you need? Call (540) 212-9374 and we'll put together your vent list from your measurements.

Optional add-ons

4 factory add-ons fit this model

Add any of these in one click — they ship together with your unit.

Fronts 2

Whitney Decorative Front for Altitude X
Part # WAX36BK
$859.00
+ Add
Zen Decorative Front for Altitude X
Part # ZAX36BK
$369.00
+ Add

Surrounds & Trim 1

Finishing Trim for Altitude X
Part # FTAX36BK
$399.00
+ Add

Heat Management 1

Ducted Heat Management Kit for Altitude X
Part # DHMAXF+DHMAXTP+DVK+DHMFG3850
$1,326.00
+ Add
Call a specialist: (540) 212-9374Free fit check before you order · we confirm venting, size and parts · Mon–Fri 9–5 ET
Free shipping · ships direct from the manufacturer · typically delivered curbside in 5–17 business days. We email you the lead time for your item within one business day of ordering.
Not sure this is the right part? Ask a fireplace specialist.Call (540) 212-9374, Mon–Fri 9 AM–5 PM ET. Our hearth product specialists will confirm the model, venting and parts match before you order. Everything ships direct from the manufacturer; installation is by your own licensed local installer.
Free shipping on most orders over $99 · Authorized dealer · Manufacturer warranty included

Returns may be subject to a 20% restocking fee. Shipping and processing fees are non-refundable.

  • Free Shipping on Orders Over $99
  • Product Support Available
  • Secure Checkout
  • Trusted Payment Methods

Product Description

Napoleon Altitude X 42" Direct Vent Gas Fireplace

The Napoleon Altitude X 42" is a clean-face direct vent gas fireplace with a full view of the fire: 38,000 BTU/hr on natural gas or 36,500 on propane, high-definition PHAZER log kits in Split Oak, Driftwood or Birch, and a blower, Night Light, ProFlame 2 remote and eFIRE Bluetooth phone control all included — from $4,449 before the interior panels and log set you choose above. It vents through a 5" / 8" pipe off the top, frames into a 42-3/4" wide, 19" deep opening, and carries Napoleon's President's Lifetime Limited Warranty.

Choose the 42" if you want a traditional log fire that you can dress your way — five interior panels, from reflective black porcelain to Westminster herringbone brick, and three log styles — and run from a remote or your phone. It is approved for bedrooms and bathrooms and certified for mobile homes, so it suits a room-sized install as well as a living room.

It is not right for you if you want a long, low linear flame. The Altitude X is a traditional log fire you dress your way, with five interior panels from reflective black porcelain to Westminster herringbone brick.

Specifications

The framed opening is 42-3/4" wide and 19" deep, with the combustible header 46-5/8" above the base, and the enclosure needs at least 72" of height (84" for a recessed installation). The face is finished in non-combustible material, which may stand out up to 4" from the door, and the finishing flange adjusts up to 3/4" for the thickness of the finish. No hearth is required; plan a raised platform so the finished floor clears the safety barrier. Mantel clearances depend on the mantel's depth and are charted on page 44 of the installation manual. The vent pipe needs 3" above and 2" at the sides of horizontal runs and 1" around vertical runs, and the fireplace takes a 1/2" gas line and a hard-wired 115 V supply.

How the Altitude X 42" compares to the 36"

Both Altitude X sizes share the clean-face firebox, the log kits and panel styles, the included blower, eFIRE controller and Night Light, and the 5" / 8" top vent. The 42" is rated 38,000 BTU/hr on natural gas and frames into a 42-3/4" wide opening, from $4,449; the 36" is rated 35,500 BTU/hr and frames into a 35-3/4" opening, from $4,109.

Features

  • Clean-face, full-view firebox with 5 mm ceramic glass and a safety barrier screen included
  • High-definition PHAZER log kits in Split Oak, Driftwood or Birch, with glowing embers
  • ProFlame 2 remote plus the included eFIRE Bluetooth controller for on/off, flame height, light, blower and timer from your phone
  • Heat-circulating blower with variable speed and thermostatic control included
  • Pilot-on-demand electronic ignition and Napoleon's Night Light
  • Optional Dynamic Heat Control or Ducted Heat Management to lower temperatures above the fireplace and reduce mantel clearances

Answers to common questions

What venting does the Altitude X 42" need?

It is a direct vent fireplace on a 5" exhaust / 8" air-intake pipe off the top of the unit, run out through a wall or up through the roof: up to 20 ft horizontally and up to 40 ft vertically. Use one brand of pipe throughout — Napoleon (Wolf Steel), Metal-Fab, BDM, Simpson Dura-Vent or Selkirk Direct Temp — and do not mix rigid and flexible pipe. A wall termination uses Napoleon's round GD422R-2 terminal or the Silhouette terminal kit; roof kits cover pitched and flat roofs. The vent run and termination are ordered separately and sized to your installation, and the outside terminal clearances are listed on page 16 of the installation manual. It is also certified for a power vent kit.

What’s included, what’s required, and what’s optional?
  • Included in the box: Electronic pilot-on-demand ignition with the ProFlame 2 remote control; eFIRE Bluetooth controller; Heat-circulating blower with variable speed and thermostatic control; Night Light; 5 mm ceramic glass door with safety barrier screen and door trims; Non-combustible facing board, nailing tabs and vent insulation sleeve.
  • Required to complete the installation, purchased separately: Interior Panel - the panels that line the firebox, in porcelain, glass or brick; Log Set - the high-definition logs with glowing and charcoal embers; Venting - 5" / 8" direct vent pipe and a wall or roof termination sized for your run (see pg 13 in the installation manual); Electrical - a grounded 115 V supply, hard-wired to the fireplace; Gas Line - a 1/2" gas supply to the fireplace's shut-off valve.
  • Optional: A vertical or external wall venting package, heat management (Ducted Heat Management, Dynamic Heat Control, Dynamic Heat Control Plus or the Hot Air Distribution Kit), a power vent adaptor kit, decorative fronts, finishing trims and the Wall Mount Control — the fireplace operates fully without any of them.
Can I mount a TV above it?

Yes, with planning. Napoleon draws the minimum TV clearances above the Altitude X — flush, recessed and partially recessed, with or without a mantel — on page 45 of the installation manual, and the mantel clearances on page 44. Adding the optional Dynamic Heat Control or Ducted Heat Management system moves heat away from the fireplace, lowers the temperature above it and reduces the mantel clearances; it goes in before the fireplace is set in place. Always stay within your TV maker's own temperature limits.

Where can it be installed?

Indoors, including bedrooms, bathrooms and bed-sitting rooms, and it is certified for mobile and manufactured homes where local codes allow (fastened in place). It is rated to 4,500 ft, with the input reduced above that. Keep furniture and other objects at least 48" from the front, and do not run it below freezing.

What gas and electrical connections does it need?

A 1/2" natural gas or propane line to the fireplace's flex connector and shut-off valve, installed and tested before the wall is finished — natural gas at 4.5" to 7" w.c. inlet pressure, propane at 11" to 13" w.c. Electrically it is hard-wired to a grounded 115 V, 60 Hz supply. It can be converted between natural gas and propane with Napoleon's certified conversion kit.

Does buying online affect my Napoleon warranty?

No. The firebox, burner, PHAZER logs and embers and the ceramic glass (against heat breakage) are covered for as long as you own the fireplace — parts free for the first 10 years, then at half of retail; blowers, valves, remotes and other electrical parts and the labour are covered for the first year. Coverage starts on the installation date.

Specifications

Video

No video is available.

FAQs

Q: Do You Ship to Me?

A: We ship throughout the continental United States with free shipping on orders over $99 (flat rate $9.99 under $99). For Alaska, Hawaii, and U.S. territories, please contact us for a custom shipping quote, which we'll provide within 1-2 business days. Orders to these locations are not processed until shipping costs are confirmed and approved. We do not currently offer international shipping outside of the United States and its territories.

Q: When Will My Order Ship?

A: Orders are processed within 1–3 business days, and delivery after shipment takes 5–14 business days depending on your location. Custom-made and made-to-order products require 2-3 weeks for production before shipment. Special order items typically take 1-2 weeks. You'll receive tracking information once your order ships. For specific timing on your order, please contact us.

Q: What Payment Methods Do You Accept?

A: We accept all major credit and debit cards (Visa, MasterCard, American Express, Discover), Apple Pay, Google Pay, and Link by Stripe for one-click checkout.

Q: Can I Cancel or Modify My Order?

A: For ready-to-ship items, contact us immediately if you need to cancel or modify. We'll do our best to accommodate if the order hasn't shipped yet. For custom-made, made-to-order, and special order items, these are final sale and cannot be canceled or modified once production begins or the order is submitted to the manufacturer. Please double-check your order details before completing your purchase.

Q: Why Choose First Response Fireplace Products?

A: We bring years of specialized expertise to the fireplace industry. When you choose us, you're getting the knowledge and experience that comes from being dedicated fireplace industry experts.

More Questions?

  • Secure Checkout
  • Trusted Payment Methods
  • Manufacturer Warranty Included
  • Expert Customer Support
  • Fast & Reliable Delivery

© 2026 First Response Fireplace Products, All rights reserved

Request a Quote

Please fill out the form below to provide us with more information. One of our experts will contact you after submission.
You can also call our experts (540) 212-9374
*Required
Checkbox*

Freight Shipping

After processing, your order will ship and should arrive within 5-7 business days, depending on your location
Your order comes with free lift gate service. The freight driver will use a lift gate to unload the shipment and place it curbside at your home. You’ll need to move the shipment from the curb to the end location. Please make sure your street can accommodate a tractor-trailer.
Upon delivery, you’ll be asked to sign the Proof of Delivery (POD). Before signing, inspect the shipment for visible damage. If damaged, refuse the shipment and call us for a replacement. Damage to products inside the shipment must be reported within 3 business days of delivery.