Grilla Mammoth
Best overall — 1,660 sq in on 5 stainless racks (room for 10) · 180–450°F · 40 lb hopper · WiFi · 4-year warranty
How to read a Showdown Score™
The only score that counts how often a product breaks, not just how owners feel about it.
- Three parts add up to the score: what owners rate it, how often it fails them, and whether a credentialed tester backed it.
- Bands: Exceptional 8.5 and up, Excellent 7.5, Very good 6.5, Good 5.5, Fair 4, Poor below 4. Every score is dated.
- Price, the warranty and what a link pays us stay out of it.
Very good, early data
Very good is 6.5 to 7.4.
See why it scored 6.7
🏆 Winner — recteq Staq vs Grilla Mammoth vs Pit Boss Navigator 6: The Best Vertical Pellet Smoker of 2026
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Sold and shipped by AOB Products Company · 30-day refund/replacement · read 2026-10-15
Specs
| Model | 4001294 |
| Cook area | 1,660 sq in (5 racks of 332) |
| Racks | 5 stainless, slots for 10 |
| Temp range | 180–450°F |
| Hopper | 40 lb |
| Probes | 2 included |
| WiFi app | Yes (Grilla Grills app) |
| Tester measurement | Food & Wine: 10°F swing while cooking. Smoked BBQ Source: half the hopper left after 20–22 h at 225°F |
| Rack spread | Not published by any tester |
| Owner rating | 4.0★ / 16 |
| Electronics warranty | 4 years (whole grill) |
| Warranty | 4 years (Grilla web page and Mammoth manual); original owner, residential use only; parts only (failed parts returned freight prepaid; no labor or transport); rust and oxidation not covered; void unless bought new from Grilla or an authorized retailer |
Pros
- In a tester's overnight cook at 225°F, half the 40 lb hopper was left after 20 to 22 hours
- Food & Wine saw a 10°F swing while cooking, which it calls a normal variance
- Five stainless racks with slots for ten, and two meat probes in the box
- Sold and shipped on Amazon by AOB Products Company, Grilla's parent company
Cons
- Small owner record: 4.0★ across 16 on Amazon; one critical review is an auger that quit on the third cook, the other a late delivery and unanswered phones
- Nobody has published how far its top and bottom racks run apart
- Food & Wine found no pronounced smoke flavor; Smoked BBQ Source calls it a little bit loud and could not get the app onto WiFi
- Rust and oxidation are not covered, and you pay the freight to send a failed part back
An auger that quit on the third cook and a seller with no record of the order; late deliveries and unanswered phones.
2 of 2 critical reviews (16 ratings in all) · critical reviews read October 2026
Pro review “All in all, both pork butts took between 20 and 22 hours total, and when I was done cooking, the Mammoth still had 50% of the pellets remaining in the hopper.”— Breanna Stark, Smoked BBQ Source
FAQ
Who is the Grilla Mammoth for?
You smoke overnight for a crowd and want the vertical a tester actually ran: half its 40 lb hopper was still there after a 20-to-22-hour cook at 225°F, and Food & Wine saw a 10°F swing during cooking.
What do owners say about the Grilla Mammoth?
4.0★ across 16 owner ratings (Amazon, read 2026-10-15 · too thin to judge). What owners complain about: An auger that quit on the third cook and a seller with no record of the order; late deliveries and unanswered phones.
Who sells the Grilla Mammoth on Amazon, and can it be returned?
Sold and shipped by AOB Products Company, when we read the listing on 2026-10-15. Amazon's returns line read: 30-day refund/replacement. Sellers and return terms can change, so check both on the listing before you buy.
What is the warranty on the Grilla Mammoth?
4 years (Grilla web page and Mammoth manual); original owner, residential use only; parts only (failed parts returned freight prepaid; no labor or transport); rust and oxidation not covered; void unless bought new from Grilla or an authorized retailer
Does the Grilla Mammoth warranty still apply if I buy it on Amazon?
Grilla answers that in its own warranty document, which we read on 2026-10-15: If the Covered Product was not purchased new from Grilla or an authorized retailer this warranty is null and void. We quote the maker rather than deciding your case — read the document before you buy if the warranty is why you are buying.
Record
- — Added as the best overall vertical pellet smoker: the one vertical with a tester's overnight burn (Smoked BBQ Source) and a lab temperature swing (Food & Wine). Its owner record is 16 Amazon ratings.
Warranty — and what changes if you buy it on Amazon
4 years (Grilla web page and Mammoth manual); original owner, residential use only; parts only (failed parts returned freight prepaid; no labor or transport); rust and oxidation not covered; void unless bought new from Grilla or an authorized retailer · you are buying this on Amazon
If the Covered Product was not purchased new from Grilla or an authorized retailer this warranty is null and void.
Grilla’s own warranty document · read
Read it yourself: Grilla warranty document · we read it . Terms change without announcement, so treat this as a dated snapshot. How warranty works by buy path →
✓ Safety: no active recall — No active CPSC recall for Grilla or the Mammoth (checked 2026-10-15).
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Data last verified: 2026-10-15. Ratings are real, dated reads — never scraped or invented. Full methodology and monetization disclosure: how we test.