The catch
Pit Boss 500FB2 Wood Pellet Grill
Long cooks mean watching the 5-pound hopper, so don't count on going all night without a refill.
Side by side
You are choosing between direct-flame access and a larger published lower rack and hopper.
Before you buy
500FB2 has 518 square inches and 550B has 560, a difference of 42 square inches, or 8.1% of the smaller figure.
Where this comes from
560 minus 518 = 42 sq in. 42 ÷ 518 × 100 = 8.1%. Each total spans multiple rack levels, so it is not a contiguous pan area. No serving count is drawn from it.
The catch
Long cooks mean watching the 5-pound hopper, so don't count on going all night without a refill.
The catch
For a conservative 12-hour plan with no refills, the 10-pound hopper is marginal.


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500FB2 and 550B compared on usable rack space, pellet capacity, searing setup and cleanup, so you can choose your grill.
You are choosing between direct-flame access and a larger published lower rack and hopper.
Which one fits
At 518 and 560 square inches, the total rack areas are relatively close. Z Grills publishes 406 square inches for its lower rack, a figure that helps in judging food that cannot fit under the upper shelf.
An 8lb hopper appears in the checked 550B specification table, yet its introductory copy also mentions 10lb. We use the smaller explicit table value here and flag the conflict so you can confirm it before buying.
Pit Boss has the direct-flame lever and a 500°F chamber setting. The 550B stops at 450°F and cooks indirectly, so your preferred finishing method counts for more than the modest total-area difference.
The Pit Boss can be set 25°F higher than 475°F. Z Grills tops out 25°F under the requested setting.
In practice
500FB2 has 518 square inches and 550B has 560, a difference of 42 square inches, or 8.1% of the smaller figure.
560 minus 518 = 42 sq in. 42 ÷ 518 × 100 = 8.1%. Each total spans multiple rack levels, so it is not a contiguous pan area. No serving count is drawn from it.
Based on an illustrative 1.5lb per hour, a full 5lb hopper equals 3.3 hours of fuel and an 8lb hopper equals 5.3 hours. Read these as planning estimates with no reserve included.
A constant 1.5lb/h burn is assumed only to put hopper sizes side by side. 5 ÷ 1.5 = 3.3h. 8 ÷ 1.5 = 5.3h. In practice, use depends on temperature, weather, food and grill design. This does not recommend unattended use.
The Pit Boss can be set 25°F higher than 475°F. Z Grills tops out 25°F under the requested setting.
500 minus 475 = 25°F. 450 minus 475 = negative 25°F. It tells you nothing about real grate heat or how well food browns.

Pit Boss, PB500FB2
Its cooking area measures 518 square inches, and the pellet hopper holds 5 pounds.

Z GRILLS, ZPG-550B
Cooking area comes to 560 square inches, and the pellet hopper holds 10 pounds.
Spec by spec
| Spec | Pit Boss 500FB2 Wood Pellet Grill | Z GRILLS ZPG-550B Pellet Grill | In practice |
|---|---|---|---|
| Cooking surfaces | 518 sq in total | 560 sq in total, 406 sq in main rack | At 518 and 560 square inches, the total rack areas are relatively close. Z Grills publishes 406 square inches for its lower rack, a figure that helps in judging food that cannot fit under the upper shelf. |
| Pellet supply | 5lb hopper | 8lb hopper | An 8lb hopper appears in the checked 550B specification table, yet its introductory copy also mentions 10lb. We use the smaller explicit table value here and flag the conflict so you can confirm it before buying. |
| Chamber ceiling and searing | 500°F, direct-flame or high-heat grilling design | 450°F, indirect cooking | Chamber settings, localized flame heat and separate side stations measure different things. Match the cooking method along with the temperature. |
| Controls and smoke mode | Local controls without Wi-Fi | Local controls without Wi-Fi | Connectivity helps only where the network reaches. No advantage in flavor or temperature accuracy is inferred from a named mode. |
| Cleaning and installation | Grease collection and separate internal ash cleaning | Separate grease collection and internal ash cleaning, 84lb dry weight | Pit Boss has the direct-flame lever and a 500°F chamber setting. The 550B stops at 450°F and cooks indirectly, so your preferred finishing method counts for more than the modest total-area difference. |
Trade-offs
Change of plan
Go with Pit Boss 500FB2 Wood Pellet Grill. At 518 and 560 square inches, the total rack areas are relatively close. Z Grills publishes 406 square inches for its lower rack, a figure that helps in judging food that cannot fit under the upper shelf.
Go with Z GRILLS ZPG-550B Pellet Grill. Pit Boss has the direct-flame lever and a 500°F chamber setting. The 550B stops at 450°F and cooks indirectly, so your preferred finishing method counts for more than the modest total-area difference.
Decision guide
It comes down to direct-flame access versus the larger published lower rack and hopper.
At 518 and 560 square inches, the total rack areas are relatively close. Z Grills publishes 406 square inches for its lower rack, a figure that helps in judging food that cannot fit under the upper shelf.
An 8lb hopper appears in the checked 550B specification table, yet its introductory copy also mentions 10lb. We use the smaller explicit table value here and flag the conflict so you can confirm it before buying.
Pit Boss has the direct-flame lever and a 500°F chamber setting. The 550B stops at 450°F and cooks indirectly, so your preferred finishing method counts for more than the modest total-area difference.
By the numbers
What we found across the pellet grills and smokers we compare, plus the checked facts behind each finding.
8 of the 22 models checked meet every need here: “Run a brisket overnight” and “Get to 500 degrees or more for a hot finish”.
8 models fit, out of 22 checkedHow we countedThe count uses each product's current fit ratings for “Run a brisket overnight” and “Get to 500 degrees or more for a hot finish”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Pit Boss 500FB2 Wood Pellet Grill |
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| Z GRILLS ZPG-550B Pellet Grill |
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Ready to buy
Open either model on Amazon for the current price, customer reviews and delivery options.

The Flame Broiler lever is what you want
See price & reviews on Amazon
The 406-square-inch lower rack appeals to you
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