You've pulled up the Z Grills ZPG-450A and the Pit Boss 500FB2 side by side, and on paper they look like the same budget pellet grill wearing a different badge.
The Pit Boss 500FB2 is the stronger all-around pick at this price. It has more cooking space, a direct-flame Flame Broiler Lever rated to 1,000°F, and a 5-year warranty.
The ZPG-450A's real advantage is its hopper capacity. It holds roughly 15.4 lb against the 500FB2's 5 lb. That matters if you regularly run long, unattended smokes and don't want to check on the grill every few hours.
Every top-ranked comparison we checked skips this exact matchup. They jump straight to each brand's larger WiFi-connected flagship instead.
Our pellet grill guide covers where entry-tier, non-WiFi models like these fit into the wider buying decision. Most published comparisons skip this exact pairing entirely, defaulting instead to each brand's larger, WiFi-connected flagship. The Pit Boss Sportsman 1100 against the Z Grills 700D4E is the common one; this article covers the cheapest, non-WiFi model each brand actually sells.
What You Actually Get at This Price
The spec gap between these two grills isn't one brand simply out-engineering the other. It's two different design priorities aimed at two different cooking styles.
The 500FB2 puts its budget into a direct-flame searing mechanism and more grate space, the toolkit for a Saturday afternoon of burgers and steaks. The ZPG-450A puts its budget into a much larger hopper instead, the toolkit for a brisket or pork shoulder you'd rather not babysit. Once you see it that way, the numbers below aren't really competing on the same axis at all.
Three concrete numbers should drive your decision, and both brands' own product pages confirm each one directly.
Hopper capacity is where the ZPG-450A pulls ahead by a wide margin. Z Grills' own Australian knowledge base states the 450A's hopper holds up to 7 kg of pellets, which converts to roughly 15.4 lb. That's about three times the 500FB2's 5 lb hopper.
That buys you real buffer before you have to walk outside for a mid-cook refill on a long, unattended smoke. Don't take the marketing runtime figure at face value, though. Z Grills' own product page pairs that 7 kg hopper claim with "16+ hours." That number assumes you're running low and slow, not the hotter settings you'd use for a shorter cook or a sear session.
Run the ZPG-450A hotter, and it'll burn through pellets faster than that figure suggests, shrinking your window well below the advertised number. The hopper is still a real advantage for you if you smoke often, just not a fixed overnight guarantee on its own. Your actual burn rate still depends on your set temperature, the weather, and the pellets you're feeding it.
Cooking area and direct-flame searing both run the other way, in your favor if you sear. The 500FB2 gives you 518 sq in of two-tier cooking space against the ZPG-450A's 459 sq in, a modest gap, not a lopsided one.
The bigger difference for you is the 500FB2's Flame Broiler Lever, a mechanism Pit Boss rates to 1,000°F for direct-flame searing. You won't find a comparable feature on the ZPG-450A's product page or in its owner's manual. Z Grills keeps that capability on its separate 600-series line instead.

Warranty coverage is the largest, most concrete gap between the two, and it's worth weighing before you buy either one. Pit Boss backs the 500FB2 with a 5-year warranty, stated plainly on its own product page. Z Grills' general warranty policy for its pellet grills, which covers the ZPG-450A, runs 3 years. That's two fewer years of coverage on your investment, not a marginal difference.
If you're worried about being locked into a brand's own pellet line, one real owner's experience helps. An Amazon Verified Purchase buyer of the ZPG-450A, reviewing under the title "Looking forward to overcoming the learning curve," reported running basic, non-proprietary pellets with no problems. They also flagged that other points in their own review might read as negative, a genuinely mixed first-impression rather than an unqualified endorsement. It's exactly the kind of real ownership detail you won't get from a brand-level comparison.
You'll find the same pattern on the 500FB2 side. A Walmart Verified reviewer who self-identifies the exact model reported it as heavy duty with great build quality, but noted the 5 lb hopper "is super small" in practice, exactly what the spec gap above would lead you to expect.
The Decision, Not "It Depends"
Both grills are genuinely non-WiFi. Neither app-connects, and neither is secretly the "smart" one hiding behind a lower price. That's not where this comparison turns.
The two grills handle temperature control differently, but not in a way that favors either one. The ZPG-450A's own product page confirms "the advanced PID controller." That's a system that continuously corrects fan speed and pellet feed rate rather than cycling on a fixed timer. The 500FB2 runs its own dial-in digital control board with 5°F increments instead. That's a different mechanism, one Pit Boss does not itself describe as PID.
Strip away the false differentiators, and the real decision comes down to just two things. How much you value direct-flame searing and extra warranty coverage, against how much you value a bigger overnight hopper.
The Verdict
For most weekend cooks (burgers, chicken thighs, the occasional seared steak), the Pit Boss 500FB2 is the stronger all-around pick. More cooking space, a real searing feature, and two extra years of warranty coverage, all at a price that still undercuts most full-size pellet grills in this class.
See our best sub-$500 pellet grills roundup for how it stacks up against three other picks in the same tier. Our Pit Boss vs Traeger comparison covers how the 500FB2's larger sibling, the 700FB2, stacks up against Traeger's own lineup on sear and warranty.
If long, hands-off overnight smokes are a regular part of your routine rather than an occasional treat, spend the trade-off the other way and get the Z Grills ZPG-450A instead. Its hopper is the legitimate reason, not a discount story, since it genuinely outperforms the 500FB2 on the one thing that matters for that specific routine.
Whichever you pick, verify the exact model number against the current listing before you buy. Both brands sell several similarly-named models in this same general size class, and the number on the box matters more than the name. Our Grill Size Calculator can help confirm the cooking area actually fits your guest count and cook style.
Frequently Asked Questions
Is the Z Grills 450A the same as the 450B?
Can I sear steaks on either of these grills?
Does a bigger hopper mean I can leave a pellet grill unattended all night?
What Works
- Flame Broiler Lever exposes direct flame for searing Pit Boss rates to 1,000°F, a capability the ZPG-450A's own product pages don't list at all
- 518 sq in of two-tier cooking space, more than the ZPG-450A's 459 sq in
- Backed by a 5-year warranty, two years longer than the ZPG-450A's 3-year term
Watch Out For
- 5 lb hopper, the smaller of the two grills here, meaning more manual refills on a long, unattended smoke
- Two meat probe ports, but only one probe included. The second is a separate purchase

