Sunflair Portable Solar Oven Deluxe vs GoSun Sport Solar Cooker

The short answer

For most van dwellers, the Sunflair Portable Solar Oven Deluxe is the better solar cooker. It folds down to a 1.5-inch-thick square that fits behind a cushion or under a bed. It comes with two cooking pots that hold about 4 lbs of food, enough for a family or for batch cooking. It is also more forgiving about where the sun is, so you can aim it and leave it for half an hour or so. It also costs less, which makes it the easier first solar cooker to justify.

Buy the GoSun Sport if speed and heat matter more than storage. Its vacuum-insulated glass tube reaches a rated 550°F in full sun, and owners report cooking most proteins in 20 to 30 minutes. That is a weekday dinner, where the Sunflair is a weekend roast. The trade-offs are a rigid tube assembly to store, a capacity of about 1.5 lbs per cook, and a price that sits well above the Sunflair's.

Our full Sunflair review and GoSun Sport review cover each in depth. For when solar cooking makes sense at all, see the solar cooking complete guide. VanLifeKitchens does not test cookers hands-on. Temperatures and dimensions come from manufacturer specs, and cook times come from owner reports.

Heat and cooking speed

The two cookers work in very different ways. The GoSun Sport focuses sunlight with parabolic anodized aluminum reflectors onto an evacuated borosilicate glass tube, which works like a thermos with one open end. Because of the vacuum jacket, the tube loses very little heat once it is hot. That is how it reaches a rated 550°F peak and holds 300 to 400°F in marginal light. Owner-reported times include about 28 minutes for bone-in chicken thighs, 22 minutes for an 8 oz salmon fillet and 15 minutes for crisp bacon.

The Sunflair is a fabric box oven. Mylar reflectors direct light through a clear top onto dark pots, and the heat is trapped inside like a greenhouse. Its rated peak is about 285°F, which our review compares to a slow conventional oven. Owner-reported times run from 90 minutes for a rice and bean one-pot to about 2.5 hours for a 3.5 lb whole chicken and around 4 hours for pork shoulder.

Neither is better in every case. The GoSun is a fast, high-heat cooker that can't braise, slow-cook or keep food warm. The Sunflair is a sun-powered slow cooker that bakes bread well but can't cook dinner in 20 minutes. Use a thermometer to confirm meat is cooked through on either one. Don't leave food sitting in a cooling cooker once the sun goes.

Edge: GoSun Sport, for much higher heat and cook times measured in minutes rather than hours.

Capacity and what you can cook

Capacity is where the Sunflair pulls clearly ahead. Its two included pots together hold about 4 lbs of food. The interior is roughly 0.5 cubic feet and fits a standard 9x13 baking dish if you bring your own. You can roast a chicken with vegetables in one pot and bake bread in the other.

The GoSun Sport holds about 1.5 lbs per cook in a tube about 2 inches across. That is a meal for two, or two meals for one. Small, round or cubed foods work well. A pizza, a sheet-pan meal or a large roast won't fit. A two-course dinner means cooking one course, taking it out and cooking the next, so owners report about an hour of total time for two people.

Edge: Sunflair, with roughly 2.5 times the capacity and room for baking dishes and roasts.

Storage and weight in a van

In a van, this often decides it. The Sunflair sets up to about 23 x 23 x 9 inches and folds to 23 x 23 x 1.5 inches. It weighs about 3 lbs. It slides into the gaps every build already has: under a mattress, behind a seat cushion, beside a cabinet.

GoSun lists the Sport at 29 x 12 x 6 inches folded and about 7 lbs, and it stays that shape whether you are using it or not. That is not big, but it is a rigid, awkward shape that needs its own spot, and the glass tube needs to stay in its padded case. Owners report breakages are rare when it travels in the case, and replacement tubes exist as spare parts if one does break.

Edge: Sunflair, for folding flat, weighing less than half as much and fitting almost anywhere.

Sun tracking, setup and weather

Both need strong direct sun. Neither cooks under thick overcast. They differ in how much attention they need.

Our Sunflair review describes the angled top and pyramid reflectors as collecting light from a wide arc, so you aim it roughly and adjust it about every 30 minutes. Setup takes about 90 seconds on a flat surface about 2 x 2 feet. Owners recommend a windbreak on breezy days, and the fabric is water-resistant, not waterproof, so it needs to come in before rain.

The GoSun Sport needs re-aiming every 15 to 20 minutes as the sun moves. In return, its vacuum tube handles cold, windy days better than an open box oven. That is a real advantage in shoulder seasons or at altitude. Its rigid frame also stands up to rough handling better than fabric.

Edge: Sunflair for hands-off cooking. GoSun Sport for wind and cold.

Durability and long-term ownership

According to owner reports, the Sunflair's fabric fades where it sits in strong sun for hours, its frame pivots can bend if you fold them the wrong way, and the clear top picks up scratches. None of that reportedly affects cooking. Owners report the silicone seals on the pot lids stiffening over time, and replacement pots exist as spares. The window sits in a fabric sleeve that is hard to replace.

The GoSun Sport has no electronics and few parts that can fail. Owners report scratched reflectors that still focus well and frame pivots that sometimes need tightening. The glass tube is the main fragile part, and the tube, reflectors and frame each exist as replacement parts.

Listed warranties are 1 year for both. GoSun's warranty terms exclude units bought through unauthorized resellers, so check who the seller is on the Amazon listing before you buy.

Edge: GoSun Sport, for its rigid build and user-replaceable parts.

Value

The Sunflair is the cheaper of the two, and the GoSun Sport costs considerably more. Check current prices on Amazon, since they move often. If the Sport is your pick, check the seller and warranty details on the listing before you buy.

The Sunflair also comes with its two pots. Our review notes that the cheapest fabric ovens on Amazon tend to have thinner mylar, weaker frames and no included cookware. The GoSun's extra cost buys speed and heat, but in a van you will use either one only on clear days, so the cheaper, easier-to-store cooker is the safer bet for most people.

Which one should you buy?

Buy the Sunflair Portable Solar Oven if:

• Storage space is tight and you want something that folds flat.
• You cook for three or more people, or batch cook.
• You like slow roasts, bread and one-pot meals that cook unattended.
• You want the lower-cost way to start solar cooking.

Buy the GoSun Sport if:

• You want dinner in 20 to 30 minutes, not 2 hours.
• You cook for one or two people.
• You often camp in cold or windy places with strong sun.
• You have a dedicated spot for a rigid tube cooker that folds to about 29 x 12 x 6 inches.

FAQ

Which is better, the Sunflair or the GoSun Sport?

For most van dwellers, the Sunflair. It folds flat, holds about 4 lbs of food against 1.5 lbs, and costs noticeably less. The GoSun Sport is better if you want fast, high-heat cooking for one or two people and have room to store a rigid tube.

How hot do the Sunflair and GoSun Sport get?

The GoSun Sport is rated to reach 550°F in full direct sun, and the Sunflair about 285°F. Both are lower in hazy light, at low sun angles and in wind.

Can you bake bread in a GoSun Sport?

Not really. The 2-inch tube can't take a loaf pan, and it is designed for short, high-heat cooking. The Sunflair handles bread well, and owners report loaves in about 60 to 75 minutes of full sun.

What should I check before buying the GoSun Sport on Amazon?

The seller and the warranty terms. GoSun's warranty terms exclude units bought through unauthorized resellers, and imported units can carry different terms, so confirm who is selling and what warranty applies on the Amazon listing before you buy.

Do solar cookers work in winter or on cloudy days?

Both need strong direct sun and won't cook under thick overcast. In winter at mid-latitudes, low sun angles and short days make them marginal at best. The GoSun's vacuum tube holds heat better in cold wind, but neither replaces a stove as your main cooker.