The North Face Furnace Sleeping Bag: 5 Degree Down

Toasty warmth for below-freezing temps, and room to move.

You tend to get a little claustrophobic in tight-fitting mummy bags, but need a warm enough bag for night temperatures that dip below freezing. The North Face Furnace 5-Degree Down Sleeping Bag offers more room and a more relaxed fit than North Face's ultralight, backpacking-specific mummy sleeping bags, while still offering toasty down warmth down to about 9° F for the average man. The Furnace's 550-fill goose down is water-resistant for reliable performance when conditions aren't perfectly dry, and the water-repellent outer fabric and lining protect both you and the bag from heat-robbing moisture. Strategically placed synthetic insulation pads underneath you (made of 30% recycled material) add an extra layer of protection between you and the cold ground, and a draft collar helps keep your body warmth in and the cool night air out. The insulation is evenly distributed from top to bottom so you don't get uncomfortable cold spots when you're moving around in the sleeping bag.

The Furnace's relaxed mummy shape allows the bag to stay more thermally efficient than a rectangular sleeping bag, and the fitted hood with a drawcord keeps the area around your head warm. A vaulted foot box offers roomy vertical space for your feet. The bag is outfitted with a convenient, non-snagging two-way zipper (nice if you're using the bag in warmer conditions and would love some fresh air around your feet), and the zipper pull glows in the dark to make unzipping in the middle of the night or before dawn less of a hassle. The highly compressible Furnace packs down into a 10x19-inch size for fitting inside your backpack, and its down insulation lofts back up when you take it out for optimal warmth, again and again.

  • Rated to 5 degrees (9 degree limit for average man)
  • 550-fill ProDown insulation (water-resistant goose down)
  • Heatseeker Eco synthetic insulation pads on underside
  • Relaxed-fit mummy bag with vaulted foot box
  • Fitted hood with drawcord
  • Durable polyester taffeta face fabric with DWR finish
  • Smooth polyester taffeta lining with DWR finish
  • Draft collar
  • Two-way separating zippers with garage and anti-snag tape
  • Glow-in-the-dark zipper pull
  • Internal pocket
  • Reviews
  • Q & A

Great sleeping bag

    This is a great sleeping bag. It is a perfect combination between budget and high end low temp bag.
    Yes, it's a bit bulky due to its synthetic/down fill but it's not a big deal. I managed to compress it into a relative small size. I slept in it in a 15 degree weather and it was more than warm enough- I'm sure it can keep warm even in lower temps.
    Great buy for a great price.

    Not for backpacking!

    • Familiarity: I returned this product before using it

    This would be a great car camping sleeping bag. The bag is not 100% down. The top is down the bottom you lay on is synthetic, heavy and doesn't pack down. All the descriptions I read were misleading.

    Hi Sheryl,
    I'm sorry about your experience with the Furnace. The idea that TNF had is synthetic holds heat better than true down when compressed that's why they put it in the bottom. However, it will compromise compression and weight. Let me know if you need any help choosing a sleeping bag that better fits your needs.

    Lance Haslem
    Expert Gearhead

    We were cold even at +40F

      We had high hopes for the North Face 550 Pro 5F (-15C) down sleeping bags. However when we used them on two consecutive nights this week near Chetwynd, BC, at temperatures that never fell below +40F, we were very disappointed to find that we were uncomfortably cool inside the bags. Not freezing cold but too cool for a sleeping bag rated to keep people warm at +5F. There was high humidity, but still there was no reason to be so uncomfortably cool in such a highly rated bag. I would not recommend this bag for anything except mild weather camping.

      Just got this bag in the mail today, sweet! What size compression sack would work well for this guy? I tried a 7+ liter and that seemed to be a bit too small. Do you think a 10 liter would work well? Please no guessing, I need the straight scoop from someone who owns or is familiar with this model bag. Thanks!

      Laurie, You can do a compression sack that is the same measurements as the stuff sack, or larger. If you go larger, you can put other clothes in there as well. So, you could do the APS Mountaineering Compression sack in size large, and it would fit nicely. Or you could do the XL and it would be very easy to stuff, plus, you could throw some clothes in there, if you wanted! Shoot me any other questions you may have.

      Excelent gear, great price

      • Familiarity: I've put it through the wringer

      I bought this sleeping bag a long time ago, i have used it from Los Andes snowy mountains, to Denali National Park on fall, it is very easy to compress, some times i have to open it because is really warm inside, odor resistant, insulates even using it as a blanket, at the picture we got 32F at night, and some rain catch me, but surprisingly it keeps me warm, the last thing.. my sleeping pad deflate late that night.

      Excelent gear, great price

      Wish I could use it all year

      • Familiarity: I've used it several times

      Its a shame its a 5 degree bag. I love this thing. In the winter its so warm and cozy. I use it October-February here. Anything below 30 until 0. Wish I could use it in the summer, it is so freaking comfortable.

      What size compression sack does this take?

      Hey Justin,

      Any compression sack that fits the Furnace Sleeping bag's stuff size dimensions: 10 x 19 in should work. It'll come down to whether or not you're looking for a dry bag or standard compression sack.

      Best Answer

      Hello Justin,

      I use a compression sack more or less the same size the original that comes with the sleeping bag (original does not compress), as you can see it fits on the bottom of my backpack, and i put a linen inside too, down can be easly compressed.

      Hello Justin,

I use a compression sack more or less the same size the original that comes  with the sleeping bag (original does not compress),  as you can see it fits on the bottom of my backpack, and i put a linen inside too, down can be easly compressed.

      Excellent Bag

      • Familiarity: I've used it once or twice and have initial impressions

      I bought this for camping and absolutely love it. Temperature dropped into the 20's and the bag performed wonderfully. Never got cold or too hot.

      Best sleeping bag I have owned

      • Familiarity: I've put it through the wringer

      used throughout the eastern sierras march through october. The warmth, loft, and feel is unmatched for the money! It is a bit warm for the summer months, but I just sleep on top of it. I have used this bag every night both camping and indoors for the last 6 months and it is still going strong.

      The North Face Furnace Series

      The North Face Furnace Sleeping Bag