Big Agnes Pumphouse
The BA Pumphouse is too low-volume to be a good inflation…
Source: bought it new
Price Paid: $15?
The BA Pumphouse is too low-volume to be a good inflation device, and that property is the main feature that differentiates it from any other lightweight, waterproof, roll-top stuff sack. It does, however, have an unintended use -- it makes a good solar water heater.
- Fits Nemo mattresses
- There are better mattress inflaters
- Makes a good solar water heater
The bottom of sack has a little nozzle on it that can be fitted over the inflation valve of Big Agnes, Therm-a-Rest, Nemo, and probably other types of mattresses, and sealed via an elastic cord with a toggle. There is a slightly sticky coating on the inside to help it seal. A pair of tabs on either side make it easy to pull open again. That is all very well thought out, and it is very light at about 45 g.
The idea is to open it as wide as possible, close the roll top to trap a volume of air, then roll or squeeze to force the air into the mattress. Good idea, but the material is so soft that it is hard to trap the full 5 l of air that the sack might be able to hold. Blowing into it just before closing helps, but the best I can do is about 10 to 12 fillings to inflate my full length x 20 in Neo Air All Season. It takes a while.
So I'm not impressed by the Pumphouse as an inflater, and have moved on to better options. But since it is made of black, waterproof fabric and has the nozzle on the bottom, it occurred to me it might make a good solar water heater.
I stuck the hose from an old hydration bladder into the nozzle, tightened it down, filled it up with cold water, and left it out in the low-angle Norwegian sun. The water warmed up nicely over a couple of hours. Later I put a piece of reflectix under it to protect, insulate, and reflect a bit more light energy onto it, and got temperatures up to 45˚C within about 4 hours. It will hold up to 5 l, but warms more quickly with less water. It drips a little around the nozzle, but doesn't lose much over the heating time.
We took it on the JMT and used it a few times for warm to hot dish water -- hygiene is important with a big group -- but later in the hike we got some cloudy and rainy weather or were getting into camp too late for it be very effective, so we dropped it on the last resupply. But outfitted with some kind of shower head it could be pretty nice on more leisurely hikes in the right climate.
Where to Buy
- Made from lightweight Cordura fabric, a high-performance fabric resistance to abrasions, tears and scuffs.
- Weight: 1.5 oz
- Dimensions: 19.5" long. 12" wide at the open or top end, tapering down to 8" wide at the bottom.
- Instructions for use: Open drawstring cord on nozzle end and place on opened sleeping pad valve then cinch drawstring tight. Open stuff sack end and allow air to enter then roll stuff sack end partially closed and inflate pad with the air trapped inside the Pumphouse. Repeat until pad has reached desired inflation.
Here's what other sites are saying:
The Big Agnes Pumphouse can be used as a pad pump, dry sack, stuff sack, pillow, water carrier, backcountry shower and more. Made from lightweight Cordura fabric, a high-performance fabric resistance to abrasions, tears and scuffs.
The Big Agnes Pumphouse Pad Pump dry sack fills multiple roles when you're backpacking. Use it as a pad pump, dry sack, pillow, water carrier and backcountry shower.
On Sale. Big Agnes Pumphouse Pad Pump FEATURES of the Big Agnes Pumphouse Pad Pump The Pumphouse can be used as a stuff sack, pad pump, dry sack, pillow, water carrier, backcountry shower and more SPECIFICATIONS of the Big Agnes Pumphouse Pad Pump Weight: 1.5 oz / 43 g Cordura fabric
A lightweight and versatile piece of gear you can put to use in an array of situations, the Pumphouse Pad Pump from Big Agnes can be used to inflate your sleeping pad, and is useful as a stuff sack, dry sack, pillow, water carrier, shower and more.
- Mountain Gear