Verification
+4 EcoFlowBoth: UL 2743 listed; only the EcoFlow DELTA Pro 3: UL 9540 listed.
Product comparison · Home Backup Power Systems
EcoFlow DELTA Pro 3 vs Goal Zero Yeti PRO 4000
The EcoFlow DELTA Pro 3 scores 7.5 and ranks 5th of 11 in Home Backup Power Systems; the Goal Zero Yeti PRO 4000 scores 6.4 and ranks 10th of 11 in Home Backup Power Systems. The DELTA Pro 3 leads on verification.
All 13 EcoFlow products 
EcoFlow DELTA Pro 3
$2,799 · 5th of 11 in Home Backup Power Systems
Buy Now- Verification — 10 against 6
7.5
6.4
All 4 Goal Zero products 
Goal Zero Yeti PRO 4000
$4,000 · 10th of 11 in Home Backup Power Systems
Buy NowAcross everything we scored, EcoFlow DELTA Pro 3 sits 1.14 ahead — led by verification.
Verdict
DELTA Pro 3 ahead · +1.14 (7.5 vs 6.4)Pick the EcoFlow DELTA Pro 3 when
Verification matters10vs6UL 9540 listed only on the DELTA Pro 3
Recharging matters8vs7
Price matters$2,799vs$4,000
Pick the Goal Zero Yeti PRO 4000 when
More room to expand matters20 kWh or morevs10-19.9 kWh
Scored 9 October 2026 from published specs and owner reviews. We don't buy or test units. How we score
Most common complaints
From each product's own owner reviews and retailer ratings.
EcoFlow DELTA Pro 3
- Weight, tagged negative in 34 mentions
- Battery life, tagged negative in 18 mentions
- Value for money, tagged negative in 16 mentions
Goal Zero Yeti PRO 4000
- Reliability, tagged negative in 5 mentions
- Shut off at 20 percent and a melted AC port, per one owner
- No 240 V output, per one reviewer
Where the EcoFlow DELTA Pro 3 and Goal Zero Yeti PRO 4000 differ
Scores on a 0–10 scale. Each row is one criterion, biggest difference first.
Recharging
+1 EcoFlowCapacity
tiedPower Output
tiedBattery Life
tiedBackup Readiness
tiedWarranty & Support
tiedValue
one side unscoredWhat EcoFlow DELTA Pro 3 and Goal Zero Yeti PRO 4000 owners report
Independent sources, scored for each model. DELTA Pro 3 on 5 of five, Yeti PRO 4000 on 4.
Both readings are about these exact models.
What they say
EcoFlow DELTA Pro 3
- DELTA Pro 3 owners in r/Ecoflow_community report a burnt-electronics smell in the first week (July 2024), a replacement unit that stopped taking high-voltage solar after the first stopped AC charging (June 2026), and a self-powered solar setup losing about 1.25 kWh a day to overhead (May 2026).
- A tow handle that broke at three weeks was refused under warranty twice because Amazon sold the unit, then replaced after a public thread (September 2026).
- Four owners describe it running radon-fan backup, daily solar use and builds of 20 to 24 kWh.
Goal Zero Yeti PRO 4000
- Owner posts on the Yeti PRO 4000 run from September 2024 into 2025 across r/preppers, r/Generator and r/VanLife.
- One new unit drained a refrigerator load to zero within a day until Goal Zero support had the owner clear a demo mode with full charge cycles (r/preppers, September 2024).
- A van owner reports a one-year-old unit that shuts off at 20 percent and an AC port that melted.
- An RV owner says the station had many problems at launch, most fixed by firmware (r/Generator).
- Another owner logged the inverter cycling between 113 and 124 F on a 50 to 200 W load (r/Generator).
Both readings are about these exact models.
What they say
EcoFlow DELTA Pro 3
- OutdoorGearLab, which buys its test units, drew 3,790 Wh of 4,096, 93 percent, charged at 1,293 Wh an hour, about 3.2 hours, and named it its favourite for home backup (January 2026).
- TheSolarLab, which earns affiliate commission, measured about 89 percent at a sustained 3,650 W and a 120 V charge in 2 hours 54 minutes against 2 hours 20 claimed, and found the 120 V and 240 V outputs cannot run together.
- CleanTechnica's long-term review praised draws above 4 kW in an RV but needed three battery resets in five weeks (July 2025).
Goal Zero Yeti PRO 4000
- TheSolarLab, which earns affiliate commission and offers a discount code, held 5,250 W for 10 seconds and 4,800 W for over a minute, measured a 21 W idle draw and kept it running through a hose-down, and faulted the 1,800 W AC charging cap, the lack of 240 V and proprietary solar cables.
- CleanTechnica, testing a unit Goal Zero sent and using affiliate links, ran a cooktop, a blender and a convection oven for several days without a fault and found the trolley handle flexes under the weight (November 2025).
- How-To Geek, which earns affiliate commission, recharged it from the wall in a little under 3 hours and ran house circuits through a Haven 10 that needed an electrician to install (September 2025).
YouTube
+1 EcoFlowBoth readings are about these exact models.
What they say
EcoFlow DELTA Pro 3
- HOBOTECH, posting with an EcoFlow code and affiliate link, drew 3,810 Wh at 120 V and 3,880 Wh at 240 V, 93 and 95 percent, and measured about 49 W of AC idle draw (June 2024, about 230,000 views).
- 51 Drones' efficiency test was sponsored by EcoFlow (July 2025), and AVERAGE JOE's is labelled as a paid promotion (July 2024).
Goal Zero Yeti PRO 4000
- Land to House LLC, testing a unit Goal Zero sent and linking it on Amazon, which earns commission on tagged products, ran a home transfer switch from the 30 A outlet, called the menu clunky and found the app not yet available at launch (February 2024, about 9,300 views).
- Practical Sprinkler Advice, which bought its unit at REI, ran two air compressors at about 1,600 W to blow out a sprinkler system without a shutdown or warning, and named the price and the weight as its two complaints (November 2025, about 250 views).
Amazon
+1 EcoFlowBoth readings are about these exact models.
What they say
EcoFlow DELTA Pro 3
- The station-alone listing (B0D14FMFZD), sold by EcoFlow, shows 4.3 from 714 ratings in its review block, 75 percent five-star and 10 percent one-star, and 4.2 from 303 in its product summary.
- Amazon's review tags are positive on performance (109 of 127 mentions) and power output (37 of 49), and negative on weight (34 of 42).
Goal Zero Yeti PRO 4000
- The station listing (B0CJCT1TC5) reads 3.4 from 32 ratings, 41 percent five-star and 22 percent one-star, and showed no featured offer.
- Amazon's review tags are positive on quality (7 of 8 mentions) and negative on reliability (5 of 7).
- Reviewers describe immediate failures, charging faults and a casing lid that came off when the unit was lifted by its handles, against praise for the aluminum case and for running a travel trailer from the 30 A outlet.
Owner reviews
one side unscoredNo usable source for the Goal Zero Yeti PRO 4000.
What they say
EcoFlow DELTA Pro 3
- Home Depot holds 12 native reviews of the station alone from September 2024 to August 2026, averaging 4.3 with two at one or two stars, once 64 syndicated and 31 Reviewer Program reviews are set aside.
- Lowe's file of 71 is mostly syndicated from EcoFlow, and Best Buy's 11 are all flagged incentivised.
Goal Zero Yeti PRO 4000
No usable source.
EcoFlow DELTA Pro 3 vs Goal Zero Yeti PRO 4000: pros and cons
What each one does well, and where it falls short.
EcoFlow DELTA Pro 3
Strengths
- 120/240 V split-phase from one unit
- UL 9540 listing by model in SGS's directory
- 3,790 Wh drawn by OutdoorGearLab93 percent of rated
- 2,600 W of solar over two inputs
- 4,000 cycles to 80 percent
Drawbacks
- 113.5 lb
- AC idle draw of about 49 W in HOBOTECH's test
- 120 V charging took 3.2 hours in OutdoorGearLab's test
- 120 V and 240 V outputs cannot run together in TheSolarLab's test
- No 12 V car socket
Goal Zero Yeti PRO 4000
Strengths
- Expands to a rated 20 kWh with four Tank PRO 4000 batteries
- 3,000 W solar input at 13.3 to 150 V
- 4,000 cycles to 80 percent
- Switchover under 10 ms through the Haven 10
- Aluminum case that kept working through TheSolarLab's hose test
- 21 W idle draw in TheSolarLab's test
Drawbacks
- 120 V onlywith no 240 V output
- 115.7 lb125.7 lb on its cart
- AC charging capped at 1,800 W and pauses when the load passes 1,800 W, per TheSolarLab
- Owner reports of firmware faults and 12 V charging errors
- Haven 10 switch costs $999.95 more and needs an electrician
EcoFlow DELTA Pro 3 vs Goal Zero Yeti PRO 4000: the numbers
Price, scores and rank, then only the specs that differ. Green marks the side with more.
- CapacityEcoFlow More4,000-5,999 WhGoal Zero3,000-3,999 Wh
- AC outputEcoFlow More4,000-5,999 WGoal Zero3,000-3,999 W
- Output voltageEcoFlow120/240 V split-phaseGoal Zero120 V only
- Expandable toEcoFlow10-19.9 kWhGoal Zero More20 kWh or more
- Safety listingsEcoFlow MoreUL 2743 listed, UL 9540 listedGoal ZeroUL 2743 listed
- WeightEcoFlow113.5 lbGoal Zero115.7 lb
Same on both
- LiFePO4Battery chemistry
- 4,000-5,999 cyclesRated cycles
- 2,000-3,999 WSolar input
- 10 ms or lessBackup switchover
- 5 YearsWarranty
We earn a commission if you buy through these links. It never changes a score.
Not sold on either one?
The top-scored and the cheapest other pick from each brand.
More from EcoFlow 2 scored in Home Backup Power Systems
What’s different
- Capacity: 6,000 Wh or more, not 4,000-5,999 Wh
- AC output: 6,000 W or more, not 4,000-5,999 W
Pick it ifPower output matters10vs5
What’s different
- Capacity: 6,000 Wh or more, not 4,000-5,999 Wh
- AC output: 6,000 W or more, not 4,000-5,999 W
Pick it ifPower output matters10vs5
More from Goal Zero
No other scored Goal Zero products in Home Backup Power Systems.
EcoFlow DELTA Pro 3 vs Goal Zero Yeti PRO 4000: common questions
Is the EcoFlow DELTA Pro 3 better than the Goal Zero Yeti PRO 4000?
On our scores, the EcoFlow DELTA Pro 3 is ahead, 7.5 against 6.4. The EcoFlow DELTA Pro 3 leads on verification (10 against 6) and recharging (8 against 7).
Which is cheaper, the EcoFlow DELTA Pro 3 or the Goal Zero Yeti PRO 4000?
The EcoFlow DELTA Pro 3, at $2,799 against $4,000: $1,201 less.
Which holds more energy, the EcoFlow DELTA Pro 3 or the Goal Zero Yeti PRO 4000?
The EcoFlow DELTA Pro 3: rated 4,000-5,999 Wh, against 3,000-3,999 Wh for the Goal Zero Yeti PRO 4000.
Which has more AC output, the EcoFlow DELTA Pro 3 or the Goal Zero Yeti PRO 4000?
The EcoFlow DELTA Pro 3: rated 4,000-5,999 W, against 3,000-3,999 W for the Goal Zero Yeti PRO 4000.
Which has more safety listings, the EcoFlow DELTA Pro 3 or the Goal Zero Yeti PRO 4000?
The EcoFlow DELTA Pro 3. The EcoFlow DELTA Pro 3 lists UL 2743 listed and UL 9540 listed; the Goal Zero Yeti PRO 4000 lists UL 2743 listed.
What do owners say about the EcoFlow DELTA Pro 3 and the Goal Zero Yeti PRO 4000?
Across 4 independent sources scored for both, the EcoFlow DELTA Pro 3 is ahead on Reddit, Google, YouTube and Amazon.
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Scores calculated 9 October 2026 · Products excluded where fewer than two independent sources cover them · · How we score