7 Best 3 Burner Gas Grills With Side Burner (2026 Picks)

Somewhere between the tiny two-burner grill that can’t keep up with a full rack of ribs and the six-burner beast that eats half your patio, there’s a sweet spot. That sweet spot has a name, and it’s a 3 burner gas grill with side burner. It’s the grill that shows up to the party without demanding the party rearrange itself around it — enough cooking power for a Sunday cookout, enough extra flame on the side to simmer a pot of baked beans without stealing grate space from the ribs.

Searing ribeye steaks over main cooking grates on a 3 burner gas grill

A 3 burner gas grill with side burner is a propane or natural gas outdoor cooker with three primary burners across the main cooking chamber, plus one additional burner (usually 8,000–12,000 BTUs) mounted on a side shelf for sauces, sides, or a simmering pan. Combined output on most models we researched ranges from roughly 30,000 to 52,000 total BTUs.

Here’s the thing nobody tells you on the product page: the side burner is either the most-used feature on your patio or a glorified shelf that collects dust, and which one it becomes depends entirely on whether you picked a grill that fits how you actually cook. This guide walks through seven real, currently available models — budget, mid-range, and premium — with honest analysis of who each one fits, backed by real specs and aggregated review sentiment rather than guesswork. According to the National Fire Protection Association’s grilling safety resources, outdoor grilling is popular enough, and risky enough when done carelessly, that picking the right unit and using it correctly both matter — so we’ll cover both.


Quick Comparison Table

Grill Total BTU Cooking Area Best For
Char-Broil Classic 360 30,000 + 8,000 (side) ~360 sq. in. Tightest budget
Nexgrill 3-Burner (720-0925S) 52,000 combined 418 sq. in. Best power-per-dollar
Royal Gourmet GG3201S 44,000 combined 550 sq. in. total Cabinet storage lovers
Monument Grills Mesa 325 48,000 combined 570 sq. in. total Window-lid monitoring
Monument Grills Mesa 305 48,000 combined 570 sq. in. total Stainless finish fans
Kenmore 3-Burner 30,000 combined 512 sq. in. total Brand trust, folding tables
Weber Genesis SX-335 Premium tier Largest primary area Long-term durability

Looking at the spread above, the gap between the cheapest and priciest options isn’t really about whether the grill will light — it’s about how long it’ll keep lighting reliably and how much cooking flexibility you get per burner. The Nexgrill 3-Burner (720-0925S) stands out for raw BTU output relative to its footprint, which matters if you sear often, while the Weber Genesis SX-335 trades some of that per-dollar efficiency for build quality that tends to outlast cheaper steel over five-plus grilling seasons. Budget shoppers should note that higher square footage doesn’t always mean more usable primary grate space — several listings blend in warming-rack area to inflate the number, so check the primary cooking area specifically before comparing on size alone.

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Top 7 3 Burner Gas Grills With Side Burner: Expert Analysis

1. Char-Broil Classic 360 — best all-around budget pick

The standout here is simplicity: this is a no-frills 30,000 BTU grill that gets you cooking fast without a steep learning curve or a steep price. Three stainless steel burners deliver that 30,000 BTUs across roughly 360 square inches of primary cooking space, plus an 8,000 BTU side burner under its own lid for sauces or a simmering pot. A piezoelectric ignition system means push-button starts without batteries, and the chromium-plated control panel is easy to wipe down after a greasy cookout.

Based on the spec comparison against pricier models, this grill is built for people who want reliable heat and basic versatility, not bells and whistles — there’s no temperature-monitoring smart tech, and the porcelain-enameled wire grates, while functional, don’t retain heat quite as evenly as the cast-iron grates found on step-up models. Reviewers consistently note that assembly is quick (often under an hour) and that the two foldable side tables genuinely help in tight patio spaces, collapsing the whole unit down to about 29.5 inches wide for storage.

Aggregated owner feedback across retail sites frames this as an entry-level workhorse: people appreciate how light it is to reposition, though several note the grates and steel construction feel noticeably thinner than mid-range competitors — an expected tradeoff at this price point rather than a defect.

Pros:

  • ✅ Lowest price point of the seven grills here
  • ✅ Push-button piezo ignition, no batteries needed
  • ✅ Folds down small for apartment or shed storage

Cons:

  • ❌ Smaller 360 sq. in. primary cooking area
  • ❌ Lighter-gauge steel and grates than step-up models

In the current price range — typically under $270 — the Char-Broil Classic 360 is hard to argue with if this is your first gas grill or a secondary unit for a rental property or cabin. It won’t wow anyone, but it also won’t disappoint anyone expecting a budget grill to act like a budget grill.


Simmering barbecue sauce in a cast iron skillet on a gas grill side burner

2. Nexgrill 3-Burner (720-0925S) — best BTU output for the price

What most buyers overlook about this model is how much heat it packs into a relatively compact 418-square-inch footprint: 52,000 combined BTUs across three main burners and a dedicated side burner, which is genuinely high output for a mid-size unit. That extra power translates into faster preheat times and a grill that recovers heat quickly after you drop a cold steak on the grate — a real advantage if you’re cooking for a group and constantly opening and closing the lid.

The durable steel lid and cast-iron cooking grates hold up well to repeated searing, and the built-in thermometer plus electronic ignition make day-to-day use straightforward. Here’s what to weigh: with a smaller primary area than some rivals on this list, you’ll want to plan your grill layout in stages (proteins first, then vegetables) rather than trying to cook everything simultaneously for a large crowd.

Reviewers consistently report that the ignition is dependable across seasons and that the side burner’s 12,000 BTU output is strong enough to actually boil water or reduce a sauce, not just warm it — a common complaint about weaker side burners on competing budget grills.

Pros:

  • ✅ Highest BTU-to-footprint ratio on this list
  • ✅ Side burner powerful enough for real cooking, not just warming
  • ✅ Built-in thermometer and reliable electronic ignition

Cons:

  • ❌ Primary cooking area is smaller than several rivals
  • ❌ Higher fuel draw means faster propane tank turnover

Priced in the $280–$350 range depending on retailer promotions, the Nexgrill 3-Burner (720-0925S) is the pick for grillers who value raw cooking speed over sheer surface area.


3. Royal Gourmet GG3201S — best cabinet storage design

The standout feature here is the enclosed cabinet base, which hides the propane tank and creates genuine storage space for tools, plates, and extra fuel — something none of the open-cart grills on this list offer. Three stainless steel tube burners generate roughly 36,000 BTUs, and the lidded 8,000 BTU side burner brings the total to about 44,000 BTUs across a combined 550 square inches (413 sq. in. primary plus 140 sq. in. warming rack).

Based on the spec comparison, this is the grill for anyone who’s tired of propane tanks sitting exposed on a patio or wants a cleaner look for entertaining. The double-layered stainless steel cabinet door resists rust better than painted alternatives, and four caster wheels with a brake system let you lock the grill in place once it’s positioned — genuinely useful if your patio has any slope at all.

What the spec sheet won’t tell you, but reviewers note, is that the fixed (non-folding) side tables mean this grill has a larger permanent footprint than its folding-table competitors, so measure your space before buying. Aggregated review sentiment across retailer sites is generally positive on ease of assembly, with some owners flagging that a small number of units arrived with cosmetic shipping damage — worth a quick inspection on delivery.

Pros:

  • ✅ Enclosed cabinet hides the tank and adds storage
  • ✅ Four locking caster wheels for stability on slopes
  • ✅ Rust-resistant stainless cabinet door

Cons:

  • ❌ Fixed side tables mean a larger permanent footprint
  • ❌ Some reports of shipping-related cosmetic damage

Typically found in the $230–$280 range, the Royal Gourmet GG3201S earns its spot for anyone prioritizing storage and a tidier-looking patio setup over sheer portability.


4. Monument Grills Mesa 325 — best ClearView lid for monitoring

The clear standout on this one is the ClearView glass lid — a rare feature at this price point that lets you watch food cook without lifting the lid and losing heat every time you check progress. Three stainless steel burners plus a side burner combine for 48,000 BTUs across 570 total square inches (405 sq. in. primary, 165 sq. in. warming rack), and Monument claims the grill can reach 650°F searing temperatures in about 15 minutes.

Here’s what to weigh: the porcelain-enameled cast-iron grates retain heat noticeably better than the wire grates on cheaper models, which matters if you’re searing steaks rather than just grilling burgers. Built-in tool hooks and a bottle opener are small conveniences, but they add up over a season of regular use, and the matte black powder-coated finish resists fingerprints better than glossy alternatives.

Reviewers consistently praise the fast, even heat-up and the side burner’s usefulness for sauces, though a common thread in aggregated feedback is that assembly takes longer than average — figure two to three hours rather than the sub-hour builds some budget grills claim.

Pros:

  • ✅ ClearView glass lid for monitoring without heat loss
  • ✅ Fast searing, claimed 650°F in about 15 minutes
  • ✅ Porcelain-enameled cast-iron grates for better sear marks

Cons:

  • ❌ Longer assembly time than budget competitors
  • ❌ Cannot be converted to natural gas

At a typical $380–$420 price range, the Monument Grills Mesa 325 justifies its step up from entry-level pricing through genuinely useful features rather than marketing fluff.


5. Monument Grills Mesa 305 — best stainless finish alternative

This is functionally the same grill as its Mesa 325 sibling but wrapped in a full stainless steel body instead of black powder coating — the standout here is that finish, which tends to hold up better against fading and scratching over years of outdoor exposure. You still get 48,000 combined BTUs, the same 570-square-inch cooking area split across primary and warming rack, and the same ClearView lid for keeping tabs on your food.

Based on the spec comparison, stainless steel construction is the more durable long-term investment in humid or coastal climates, where powder-coated finishes are more prone to chipping and rust creep at the edges over multiple seasons. The tradeoff is a slightly higher price tag for what is, functionally, the same cooking performance as the Mesa 325.

Aggregated reviewer sentiment highlights quick, even heating and praises the side hooks and glass window as genuinely useful daily-use features, with the general consensus being that the stainless version looks more premium sitting on a patio next to outdoor furniture.

Pros:

  • ✅ Full stainless steel body resists rust and fading
  • ✅ Same 48,000 BTU output and 570 sq. in. cooking area as Mesa 325
  • ✅ ClearView lid and side burner carry over unchanged

Cons:

  • ❌ Priced slightly higher than the black-finish Mesa 325
  • ❌ No natural gas conversion option

Expect to pay in the $400–$430 range for the Monument Grills Mesa 305, a sensible upgrade pick if finish durability matters more to you than saving an extra $20–$30.


Sautéing vegetables on a gas grill side burner while grilling burgers on main burners

6. Kenmore 3-Burner — best for brand trust and folding tables

Kenmore’s century-plus reputation for home appliances is the standout draw here, backed by a genuinely spacious 512 square inches of combined cooking space across two porcelain-coated matte-finish cast-iron grates, powered by 30,000 BTUs across three burners. The folding side shelves collapse flat for storage, which is a real advantage over the fixed-table competitors on this list if patio space is tight.

Here’s what to weigh: an enclosed base cabinet keeps the propane tank out of sight, and a built-in tool holder keeps grilling utensils within reach without cluttering the side table you actually need for food prep. The 30,000 BTU output is modest compared to the Nexgrill and Monument entries, so expect slightly longer preheat times, particularly in cooler weather.

Aggregated review sentiment is largely favorable on looks and cooking performance, but a recurring theme in customer feedback is that assembly can be more fiddly than expected — several reviewers specifically flagged imprecise metal alignment during the build process, which is worth budgeting extra time for.

Pros:

  • ✅ Large 512 sq. in. combined cooking space
  • ✅ Folding side shelves save real storage space
  • ✅ Enclosed cabinet plus built-in tool holder

Cons:

  • ❌ Lower 30,000 BTU output means slower preheat
  • ❌ Multiple reports of assembly alignment issues

In the $220–$280 range, the Kenmore 3-Burner is a strong pick for buyers who weight brand reputation and folding convenience heavily, provided you set aside extra assembly time.


7. Weber Genesis SX-335 — best long-term investment

The standout with this one is durability engineering: Weber’s Genesis line is built around porcelain-enameled cast-iron cooking grates, a stainless steel burner system, and — depending on configuration — smart connectivity that tracks food temperature in real time. Three main burners plus a dedicated side burner give you the same 3+1 configuration as the rest of this list, but with materials and construction tolerances aimed at a decade of use rather than a few seasons.

Based on the spec comparison against the other six grills here, this is the “buy once” option: the cast-aluminum components resist rust in ways painted steel simply can’t match over years of outdoor exposure, and the folding side-table hardware is noticeably sturdier to the touch than budget equivalents. What most buyers overlook is that Weber’s accessory ecosystem — replacement grates, griddle inserts, and rotisserie kits — is extensive, meaning the grill can grow with your cooking interests instead of becoming obsolete.

Reviewers and grill-focused outlets consistently rank Weber’s Genesis and Spirit lines among the most reliable gas grills tested, citing dependable ignition and a grease-management system that keeps cleanup manageable even after heavy use.

Pros:

  • ✅ Cast-iron grates and stainless burners built for longevity
  • ✅ Reliable ignition and easy one-handed lighting
  • ✅ Deep accessory ecosystem for future upgrades

Cons:

  • ❌ Highest price point of the seven grills here
  • ❌ Overkill if you only grill a few times a year

At a premium price point (typically $700 and up depending on configuration and retailer), the Weber Genesis SX-335 is the pick for buyers who grill weekly and want the last grill they’ll need to buy for a long time.


Setting Up and Breaking In Your 3 Burner Propane Grill Plus Side Burner

Unboxing day matters more than most buyers expect. Before you even attach the propane tank, wipe down the cooking grates with a damp cloth to remove manufacturing residue, then run the grill empty on high for 10–15 minutes with the lid closed — this “seasoning burn” clears off any packaging oils and preps porcelain-enameled or cast-iron grates for their first real use.

Check every hose connection with a light soap-and-water solution before your first cook; if bubbles form, you’ve found a leak that needs tightening before you light anything, a step the CPSC’s grill safety guidance specifically recommends for any propane grill regardless of brand. Once you’re confident the connections are tight, do a slow first light — some 3 burner propane grill plus side burner models ignite each burner independently, and lighting them one at a time (rather than all three simultaneously) reduces the chance of a delayed-ignition flare.

The most common first-30-days mistake is over-oiling the grates before every single cook, which builds up sticky carbon residue rather than a clean, slick seasoning layer. A light coat before the first few cooks is enough; after that, let the grates’ natural patina do the work. Also budget real time for the side burner’s separate ignition system — on several models it uses its own igniter switch, and skipping the manual for that one component is the single most common reason new owners think their side burner is “broken” when it’s simply unlit.


Real-World Scenarios: Matching a Mid Size Grill With a Side Burner to Your Life

The Weeknight Family Cook

If you’re feeding four to six people on weeknights and want dinner on the table in under 30 minutes, a mid-size grill with a side burner in the 30,000–48,000 BTU range — like the Kenmore 3-Burner or Char-Broil Classic 360 — hits the sweet spot. You get enough grate space for proteins and a vegetable side simultaneously, and the side burner lets you finish a quick pan sauce or steam a bag of vegetables without tying up the stovetop indoors.

The Weekend Entertainer

If you’re hosting eight-plus guests most weekends from spring through fall, the extra square footage and heat output of the Nexgrill 3-Burner (720-0925S) or either Monument Grills Mesa model earns its keep. Higher BTU output means faster recovery time between batches of food, which matters when you’re cycling burgers, sausages, and skewers back-to-back for a crowd.

The Serious Home Cook

If grilling is a genuine hobby rather than an occasional chore — multiple cookouts a week, experimenting with searing techniques, planning to keep the same grill for five-plus years — the Weber Genesis SX-335 is worth the higher upfront cost. The durability and accessory ecosystem pay off over a longer ownership window in ways a budget grill’s lower price tag can’t match once you account for earlier replacement.


Common Problems With 3+1 Burner Grills (And Quick Fixes)

Problem: Uneven heat across the grate. This is usually a flame-tamer or heat-diffuser issue, not a burner problem. Check that flame tamers sit flat and aren’t warped from a previous grease fire — replacement tamers are inexpensive and widely available for most models on this list.

Problem: Side burner won’t ignite. Confirm the side burner has its own gas valve fully open; on several models, the main burners and side burner draw from separate regulator paths, and a partially closed valve is the most common culprit.

Problem: Grill takes forever to preheat. Lower-BTU models like the Char-Broil Classic 360 or Kenmore 3-Burner naturally take longer, especially in cold weather. Preheating with the lid closed rather than open cuts preheat time significantly across nearly every model here.

Problem: Rust spots appearing within the first year. This points to inadequate post-cook cleaning rather than a manufacturing defect in most cases. Wipe down exterior surfaces after each cook, and store the grill under a cover when not in use — even stainless models benefit from this habit.

Problem: Propane runs out mid-cook. Higher-BTU grills like the Nexgrill 3-Burner (720-0925S) burn through a 20-pound tank faster than lower-output models. Keep a spare tank on hand if you frequently host larger cookouts.

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3 burner propane gas grill with side burner featuring a bottom cabinet storing the tank

How to Choose the Best 3+1 Burner Gas Grill

What is a 3+1 burner gas grill? It’s a grill with three main cooking burners plus one additional side burner, giving you a dedicated flame for sauces, sides, or simmering separate from the main grate. Here’s how to choose one with expert reasoning at each step:

  1. Start with total BTU output relative to primary cooking area, not the combined number that includes the warming rack — a grill with 48,000 BTUs over 400 square inches heats more evenly than one spreading the same output over 600 square inches.
  2. Check the total burner count configuration — a true 3+1 layout means three independently controlled main burners plus a genuinely separate side burner, not a shared-valve system that limits how flexibly you can zone your cooking temperatures.
  3. Look at grate material — cast iron retains heat and sears better; porcelain-coated steel wire is lighter and cheaper but loses heat faster when you open the lid repeatedly.
  4. Consider the side shelf with burner design — fixed shelves add stability and permanent workspace, while folding shelves save storage space at the cost of some sturdiness during heavy use.
  5. Weigh ignition type — piezo ignition needs no batteries but can require a few extra clicks in cold weather; electronic ignition is faster but adds one more component that can eventually need replacing.
  6. Factor in build materials for your climate — stainless steel resists coastal or humid-climate corrosion better than powder-coated steel over a multi-year ownership period.
  7. Match footprint to your actual patio space, including the extra clearance needed when side shelves are extended, before finalizing a purchase.

Common Mistakes When Buying a 3 Burner Grill With Extra Cooking Station

The single most common mistake is buying based on total square inches alone without separating primary cooking area from warming-rack space — a 570-square-inch listing might only offer 400 square inches of actual grate space where you’re cooking food directly. Read every spec sheet carefully; the manufacturers we researched do list this breakdown, but retail listings sometimes bury it below the fold.

A second frequent mistake is underestimating the side burner’s real-world BTU needs. A 6,000–8,000 BTU side burner is fine for keeping sauce warm, but if you plan to actually boil water or reduce a reduction sauce, you’ll want something closer to the 12,000 BTU side burner found on the Nexgrill 3-Burner (720-0925S).

A third mistake worth flagging: skipping the assembly-time research entirely. Grills that take two to three hours to build, like the Monument Grills Mesa 325, aren’t defective — they’re simply more involved than a 45-minute budget build, and showing up to a weekend cookout with an unassembled grill and no buffer time is an avoidable headache.

Finally, buyers sometimes ignore natural gas conversion availability entirely, then discover after purchase that their model — like either Monument Mesa grill on this list — can’t be converted from propane. If you’re planning a permanent natural gas hookup eventually, confirm conversion compatibility before you buy, not after.


3 Burner Grills vs 2-Burner and 4-Burner Alternatives

A 3 burner gas grill with side burner occupies a genuine middle ground, and understanding what you’re trading relative to the alternatives clarifies the decision. Two-burner grills are lighter, cheaper, and more portable, but they typically top out around 300–400 square inches of primary cooking area and often skip the side burner entirely — fine for a couple or a small patio, tight for anything resembling a real cookout.

Four-burner grills, on the other hand, add real cooking capacity — often 500–650 square inches of primary grate space — but at a meaningfully higher price and a footprint that eats significantly more patio real estate. They also burn through propane faster per session, which adds up in fuel cost over a full grilling season.

The three-burner configuration with a side burner splits the difference: enough grate space and heat zoning to cook proteins and vegetables at different temperatures simultaneously (something two-burner grills struggle with), plus a dedicated side burner for sauces or sides, without the size and fuel demands of a four-burner unit. For most households of two to six people who grill regularly but aren’t running a full outdoor kitchen, that middle ground is the more practical everyday choice.


Features That Actually Matter (And Those That Don’t)

Cast-iron or porcelain-enameled cast-iron grates matter — they hold heat evenly and produce better sear marks than thin wire grates, and this is one spec worth paying up for. A functioning built-in thermometer matters too; it’s a small feature, but guessing at grill temperature by hand-hovering is far less reliable.

A side shelf with burner setup that includes its own lid matters more than it sounds — that lid doubles as extra workspace when the side burner isn’t in use, effectively giving you a second prep surface for free. Locking caster wheels matter if your patio has any slope or if kids and pets are regularly nearby.

What doesn’t matter nearly as much as marketing suggests: total combined BTU numbers that blend main and side burners into one big headline figure. Two grills with identical “48,000 BTU” branding can perform very differently depending on how that heat is distributed across the primary cooking area. Similarly, built-in bottle openers and tool hooks are nice conveniences, not decision-makers — don’t let a shiny accessory list distract from grate material, burner independence, and build quality, which actually determine how the grill cooks and how long it lasts.


Long-Term Cost & Maintenance

The sticker price is only part of the total cost of ownership. A 20-pound propane tank typically costs $20–$25 to refill and lasts roughly 18–20 hours of cooking time on a mid-output grill, though higher-BTU models like the Nexgrill 3-Burner (720-0925S) will burn through that same tank noticeably faster during heavy grilling seasons.

Replacement parts are the other ongoing cost: flame tamers, igniters, and grates wear out over years of use, typically running $15–$40 per component depending on the brand and model. Grills with wider accessory ecosystems, like the Weber Genesis SX-335, tend to have more affordable and more available replacement parts long-term simply because more third-party manufacturers make compatible components.

Maintenance itself is straightforward but easy to skip: a quick wire-brush cleaning after each use, a deeper degreasing every few weeks during heavy grilling season, and a full inspection of hoses and connections at the start of each grilling season. Skipping that annual hose check is the single most common way an otherwise well-maintained grill develops a safety issue — a point echoed across general barbecue grill design and safety background, which recommends checking grill hoses for cracking, brittleness, and leaks before each new season of use.


Safety and Regulations Guide for Propane Grills

Propane, the fuel behind most grills on this list, is highly flammable, and every model here requires the same baseline safety habits regardless of price point. Always grill outdoors in a well-ventilated space, positioned well away from siding, deck railings, and overhanging branches.

Before each new grilling season, check every hose connection with a soap-and-water solution — bubbles indicate a leak that needs addressing before you light the grill. If you ever smell gas while cooking, step away immediately and do not attempt to move the grill; call your local fire department if the smell persists after shutting off the tank valve.

Keep the grill’s lid open while lighting it, never light it with the lid closed, since accumulated gas under a closed lid can ignite unpredictably. Keep children and pets at least three feet from the grilling area while it’s lit, and never leave a lit grill unattended, even briefly. These aren’t optional suggestions specific to any one brand — they apply equally whether you’ve bought the budget Char-Broil Classic 360 or the premium Weber Genesis SX-335.


Versatile Outdoor Cooking Beyond the Grill Grate

The side burner is what turns a 3 burner gas grill with side burner into a genuinely versatile outdoor cooking station rather than just a bigger grill. Once you’ve got protein on the main grates and a saucepan going on the side burner, going back to a grill without one starts to feel like a step backward — you’re no longer running back and forth to the kitchen for anything that needs a pot or pan.

Think beyond barbecue sauce: the side burner handles a cast-iron skillet for seared scallops, a pot for corn-on-the-cob, or a small saucepan for a quick pan sauce while steaks rest on the main grate. Some owners use it for breakfast duty too — frying eggs or bacon outdoors during a camping trip or a lazy weekend morning without heating up the indoor kitchen.

The models with lidded side burners, like the Char-Broil Classic 360 and Royal Gourmet GG3201S, double that space as extra prep counter when the burner isn’t lit, which matters more than it sounds once you’re juggling plates, tongs, and serving trays mid-cookout. That flexibility, more than any single spec on a comparison chart, is what separates a genuinely versatile outdoor cooking setup from a grill that just happens to have an extra knob.


Family gathering in a backyard enjoying a BBQ cookout around a 3 burner gas grill with side burner

Frequently Asked Questions

❓ What's the difference between a 3 burner and a 3+1 burner gas grill?

✅ A '3 burner' grill has three main cooking burners only. A '3+1' grill adds a separate side burner for sauces, sides, or simmering, giving you an extra dedicated cooking zone beyond the primary grate…

❓ How many people can a 3 burner gas grill with side burner feed?

✅ Most models in this range comfortably handle four to eight people per cookout, depending on primary cooking area. Models with 400+ square inches of primary space handle larger groups more easily…

❓ Can I convert a propane 3 burner grill to natural gas?

✅ It depends on the model — some grills offer conversion kits, while others, including both Monument Mesa models covered here, are propane-only. Always check manufacturer specifications before assuming conversion is possible…

❓ How often should I replace the propane tank on a mid size grill with a side burner?

✅ A standard 20-pound tank typically lasts 18-20 hours of cooking time on moderate heat, though high-BTU grills burn through it faster. Weigh your tank or use a gauge to track remaining fuel…

❓ Is a side burner worth it if I already have an outdoor kitchen island?

✅ If your outdoor kitchen already includes a dedicated burner or cooktop, a grill-mounted side burner becomes more of a convenience than a necessity — though it still saves steps during a busy cookout…

Conclusion

A 3 burner gas grill with side burner earns its popularity honestly: it’s the size that fits most patios, the burner count that lets you actually zone your cooking temperatures, and the extra flame that turns a grill into a genuine outdoor cooking station instead of a one-trick appliance. Whether you land on the budget-friendly Char-Broil Classic 360, the power-dense Nexgrill 3-Burner (720-0925S), or the long-haul investment of the Weber Genesis SX-335, the right choice comes down to matching BTU output, grate material, and build quality to how often — and how seriously — you actually grill.

Take the time to separate primary cooking area from combined square footage claims, budget honestly for assembly time on the more involved models, and don’t skip the basic safety checks each new season. Do that, and any of the seven grills covered here should deliver reliable, versatile outdoor cooking for years to come.

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GrillMaster360 Team

The GrillMaster360 Team is a group of competition BBQ veterans, certified pitmasters, and hands-on gear testers dedicated to helping American backyard grillers make smarter choices. We test every product in real conditions so you can buy with confidence and cook with knowledge.