EcoFlow DELTA 3
$599 $699price read 2026-09-21
What it does
Keeps a fridge, router and phones running through a winter storm outage: 1,024 Wh, 1,800 W output, takes extra batteries.
Cooling gear reviews that tell you the whole truth — including who shouldn't buy.
We do the homework — specs verified on manufacturer pages, patterns from hundreds of owner reviews, prices with dates on them. Then you decide.
- Specs verified at the source
- Prices stamped with a date
- Honest about the downsides
Size it before you buy — three working calculators
Drag a slider, answer a question, get your number — the same cited math that runs our guides: ENERGY STAR for air conditioners, the US DOE formula for evaporative coolers, the National Weather Service for heat index.
Live US extreme-heat warning map
Live heat and cold alerts from the National Weather Service, plus open events from NASA. El Niño changes the odds for a season. It does not cause any single alert on this map.
Sources and how fresh this is
Every active extreme heat warning, heat advisory and cold alert is read from the official sources by this page. Each layer shows when it was last read. Click anything on the map for its source.
How fresh each layer is appears here once the map has read its sources.
Map data © OpenStreetMap contributors · Tiles by OpenFreeMap · Alerts: NWS/NOAA · Events: NASA EONET · ENSO: NOAA CPC · Sea-surface imagery: NASA GIBS
Want the full picture — ONI value, advisory status, the odds of a very strong event, and what El Niño does and does not mean for your weather? Open the El Niño tracker.
Prepare for this El Niño season
A strong El Niño winter means more storms across the southern states and more power cuts. Power first, then the heat that tends to follow the summer after.
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EcoFlow DELTA 3 Max
$879 $1,199price read 2026-09-21
What it does
The bigger battery for a longer outage: 2,048 Wh and 2,400 W output, so a fridge and a router run through the night, and it takes extra batteries when the storm lasts.
BLUETTI AC180
$499price read 2026-09-21
Check price at BLUETTIWhat it does
A 1,152 Wh battery with 1,800 W output: a fridge, a router and lights through a storm outage.
BLUETTI AC200L
$899price read 2026-09-21
Check price at BLUETTIWhat it does
2,048 Wh and 2,400 W output: nearly twice the AC180's capacity, for an outage that runs past the first night.
ALLPOWERS S2000 Pro
$664 $1,399price read 2026-09-21
What it does
1,451 Wh and 2,400 W output: a mid-size backup for the fridge, the router and a few lamps when the power is out.
EcoFlow WAVE 3
$849 $1,299price read 2026-09-21
What it does
A 6,100 BTU air conditioner on its own battery: one bedroom, a van, or a heatwave power cut. Needs an exhaust duct out of a window.
Renogy 42 Qt Portable Refrigerator (40 L)
$299.99 $499.99price read 2026-09-21
What it does
A 40 L compressor fridge that runs from a car socket or a power station: cold food and medicine in a heatwave power cut.
Dr.Prepare Oscillating Standing Fan with Misting Kit
$45.99 $79.99price read 2026-09-21
What it does
A standing fan with a water mist for a porch or a garage in dry heat. Mist adds humidity, so it suits dry air, not muggy air.
Dr.Prepare 12-Inch Tower Fan (25 W AC motor)
$29.99price read 2026-09-21
Check price at Dr.PrepareWhat it does
The cheapest cooling that works in humid heat: a 12-inch tower fan on a 25 W motor moves air across a bed or a desk for under a cent an hour.
EcoFlow DELTA 3
$599 $699price read 2026-09-21
What it does
Keeps a fridge, router and phones running through a winter storm outage: 1,024 Wh, 1,800 W output, takes extra batteries.
EcoFlow DELTA 3 Max
$879 $1,199price read 2026-09-21
What it does
The bigger battery for a longer outage: 2,048 Wh and 2,400 W output, so a fridge and a router run through the night, and it takes extra batteries when the storm lasts.
BLUETTI AC180
$499price read 2026-09-21
Check price at BLUETTIWhat it does
A 1,152 Wh battery with 1,800 W output: a fridge, a router and lights through a storm outage.
BLUETTI AC200L
$899price read 2026-09-21
Check price at BLUETTIWhat it does
2,048 Wh and 2,400 W output: nearly twice the AC180's capacity, for an outage that runs past the first night.
ALLPOWERS S2000 Pro
$664 $1,399price read 2026-09-21
What it does
1,451 Wh and 2,400 W output: a mid-size backup for the fridge, the router and a few lamps when the power is out.
EcoFlow WAVE 3
$849 $1,299price read 2026-09-21
What it does
A 6,100 BTU air conditioner on its own battery: one bedroom, a van, or a heatwave power cut. Needs an exhaust duct out of a window.
Renogy 42 Qt Portable Refrigerator (40 L)
$299.99 $499.99price read 2026-09-21
What it does
A 40 L compressor fridge that runs from a car socket or a power station: cold food and medicine in a heatwave power cut.
Dr.Prepare Oscillating Standing Fan with Misting Kit
$45.99 $79.99price read 2026-09-21
What it does
A standing fan with a water mist for a porch or a garage in dry heat. Mist adds humidity, so it suits dry air, not muggy air.
Dr.Prepare 12-Inch Tower Fan (25 W AC motor)
$29.99price read 2026-09-21
Check price at Dr.PrepareWhat it does
The cheapest cooling that works in humid heat: a 12-inch tower fan on a 25 W motor moves air across a bed or a desk for under a cent an hour.
Start with your problem, not a product
Three of the trickiest cooling situations — each with its guide and its own calculator. Answer one question, get an honest fit (or an honest "nothing we cover fits").
No window? No hose?
Cooling a room without a standard window
What actually works, what's physics-defying marketing, and the honest decision tree.
Read the guide
Size it: BTU calculator
Desert-dry air? Size an evaporative cooler (DOE formula) · No mains power? Battery-run AC for tents, vans and outages · Want one guided flow for everything? Use the all-in-one finder.
Why trust a site you found five minutes ago?
Fair question. Three answers: every spec we print links to the manufacturer's own page; every price carries the date we saw it; and every recommendation includes the case against buying it. When we haven't physically tested a unit, the review says so — our method is documented, and our funding is disclosed.
El Niño winter 2026-2027 updates
NOAA puts out an El Niño update once a month. We'll email you when it does and tell you what changed. Unsubscribe any time.