Broil King Imperial QS 590iG – Smart Outdoor Kitchen Grill Island
Smart iQue control, five Dual-Tube burners, and a fully finished 304 stainless steel island — everything you need to anchor a premium outdoor kitchen in one ready-to-cook package.
The Imperial QS 590iG is built for homeowners who want their outdoor kitchen to look and work like the real thing — without sourcing a grill head, a cabinet, and a side burner separately and hoping it all fits together. Five stainless steel Dual-Tube burners put 55,000 BTU across 625 sq. in. of primary cooking space, and the 875 sq. in. total — including the warming rack — gives you plenty of room to run a full spread. The iQue system in the main cookbox adds preset Smoke, Roast, and Grill modes plus two included electronic meat probes, so managing a long cook or a bigger cut is less guesswork than it used to be. Add a 15,000 BTU rear rotisserie burner with kit included, a 10,000 BTU side burner, built-in lights, illuminated knobs, and four storage drawers in a 304 stainless steel cabinet, and this island is genuinely complete from the moment it arrives.
What Sets the Imperial QS 590iG Apart
A finished outdoor kitchen island with smart iQue connected control, five-burner performance, and 304 stainless steel construction throughout — including the accessories most islands charge extra for.
← Swipe to see all features →
55K
BTU Main Output
Five stainless steel Dual-Tube burners deliver even, powerful heat across 625 sq. in. of primary cooking space.
875
Sq. In. Total Cook Space
Primary grids plus stainless steel warming rack — room for weeknight dinners and full entertaining spreads.
iQue
Smart Control System
Preset Smoke, Roast, and Grill modes with two electronic meat probes for more confident cooking.
304
Stainless Steel Throughout
Cookbox, cabinet system, Flav-R-Wave cooking system, and cooking grids — all 304 grade.
15K
BTU Rotisserie Burner
Rear rotisserie burner plus premium rotisserie kit — included in the box and ready to use.
What's Included in the Box›
Included with the Broil King Imperial QS 590iG
- Grill island cabinet system (304 stainless steel)
- Five stainless steel Dual-Tube main burners
- Professional cast stainless steel cooking grids
- Stainless steel warming rack
- 304 stainless steel Flav-R-Wave cooking system
- 10,000 BTU range side burner
- 15,000 BTU stainless steel rear rotisserie burner
- Premium rotisserie kit
- Two electronic meat probes
- Premium thermometer
- Four storage drawers (main five-burner cabinet)
- Side burner cabinet with tank storage
- One-door/one-drawer storage cabinet
- Slide-out grease tray system
- Built-in lights in cookbox and control knobs
- Sure-Lite electronic ignition
Sold Separately
- Granite countertop
- Stainless steel sink
- Faucet
Deep Dive — Imperial QS 590iG›
Smart iQue control for easier, more confident grilling
The main cookbox uses Broil King's iQue burner temperature control and monitoring system, giving you a more guided cooking experience than a traditional gas grill island. Preset smoke, roast, and grill functions help simplify heat management, while the included electronic meat probes add more confidence when you are cooking larger cuts. If you want a premium grill island that feels easier to manage without losing performance, this setup makes a real difference.
Strong burner performance with room for everyday meals and entertaining
With five stainless steel Dual-Tube burners, 625 square inches of primary cooking space, and 875 square inches of total cooking space including the warming rack, the QS 590iG has the size and power to handle both weeknight dinners and larger gatherings. The side burner helps with sauces and sides, while the rear rotisserie burner expands what you can cook beyond standard grilling.
Built-in storage, side burner convenience, and polished island styling
The QS 590iG is more than a grill set into a cabinet. It is a full grill island setup with 304 stainless steel utility drawers, dedicated storage, a side burner for sauces and sides, and details that make evening cooking easier, including oven lights and illuminated control knobs. It gives outdoor kitchens a more finished, furniture-like feel than a bare built-in grill head alone, while still keeping performance front and center.
Who It's For — The Deck & Den Take›
The QS 590iG is the right call for homeowners who want a single-oven outdoor kitchen island that genuinely feels finished — not a freestanding grill tucked into a generic cabinet. The iQue system earns its place: if you've ever overcooked a thick cut because you were guessing at internal temperature, the meat probes and preset modes will change how you cook outdoors in a hurry.
If you regularly cook for large groups and want to run two completely separate temperature zones at the same time, step up to the QS 690iG — the dual-oven layout solves a real problem for heavy entertainers. But if one large, well-controlled cooking surface is what you need, the 590iG delivers without the added footprint or complexity.
Plan ahead on one thing: the granite countertop, sink, and faucet are sold separately. Measure and budget for those before the island arrives — it's much easier to line everything up in advance than to source countertop material after the fact.
- Homeowners building or completing a dedicated outdoor kitchen space
- Hosts who want strong grilling performance and smart iQue temperature monitoring in one finished island
- Buyers who want a rotisserie burner and kit included without a separate purchase
- Anyone who wants the furniture-grade look of a true island over a basic built-in grill head in a cabinet
- Cooks who grill regularly and want built-in lighting for easy evening and nighttime use
Full Specifications & Dimensions›
General
| Brand |
Broil King |
| Model |
Imperial QS 590iG |
| Product Type |
Outdoor kitchen grill island |
| Fuel Options |
Natural gas or liquid propane |
Burners & Heat Output
| Main Burner Output |
55,000 BTU |
| Burners |
Five stainless steel Dual-Tube burners |
| Side Burner |
10,000 BTU range side burner |
| Rear Burner |
15,000 BTU stainless steel rear rotisserie burner |
Cooking Surface
| Cooking Surface |
625 sq. in. primary cooking surface |
| Total Cooking Space |
875 sq. in. including stainless steel warming rack |
| Cooking Grids |
Professional cast stainless steel cooking grids |
| Cooking System |
304 stainless steel Flav-R-Wave cooking system |
Construction
| Cookbox |
304 stainless steel cookbox with cast aluminum end caps |
| Lid Design |
Roll-action lid with cast aluminum end caps |
| Handles |
Stainless steel handles |
| Finish |
Premium powder-coat paint finish on cabinet and base |
| Cabinet Construction |
Five burner 304 stainless steel cabinet with four storage drawers |
Control & Technology
| Control System |
iQue burner temperature control and monitoring |
| Preset Modes |
Smoke, Roast, Grill |
| Meat Probes |
Two electronic meat probes |
| Thermometer |
Premium thermometer |
| Heat Control |
Linear-Flow valves with 180° precision control |
| Ignition |
Sure-Lite electronic ignition |
Storage & Features
| Storage |
Side burner cabinet with tank storage and one-door/one-drawer storage cabinet |
| Lighting |
Built-in lights located in the cookbox and control knobs |
| Grease Management |
Slide-out grease tray system |
Included Accessories
| Included Accessories |
Premium rotisserie kit, stainless steel warming rack, two electronic meat probes |
| Sold Separately |
Granite countertop, stainless steel sink, and faucet |
Warranty, Shipping & Returns›
-
Warranty: Covered by Broil King's limited manufacturer warranty: limited lifetime coverage on the stainless steel/porcelain steel lid components and stainless steel cookbox; 15 years on cast stainless/stainless steel grids, Dual-Tube burners, side burner, rear burner, stainless steel Flav-R-Wave, stainless steel components, and remaining parts and paint warranty, honored directly by the manufacturer.
-
Free Shipping: See our free shipping policy for full details and eligible items.
-
Returns: View our return policy for eligibility and process.
-
Price Match: Found a lower price? We'll match it.
Manuals & Documents›
Frequently Asked Questions›
Does the Broil King Imperial QS 590iG run on propane or natural gas?›
The Imperial QS 590iG is available in both natural gas and liquid propane configurations. Confirm your fuel preference at the time of purchase.
What is the total BTU output of the QS 590iG?›
The main burners produce 55,000 BTU total. The rear rotisserie burner adds 15,000 BTU and the side burner adds 10,000 BTU, for a combined output of 80,000 BTU across all cooking zones.
What is the total cooking surface area?›
The primary cooking surface is 625 sq. in. With the stainless steel warming rack included, total cooking space reaches 875 sq. in.
What is the iQue system and what does it do?›
iQue is Broil King's connected burner temperature control and monitoring system built into the main cookbox. It includes preset cooking modes — Smoke, Roast, and Grill — that help manage heat automatically, plus two electronic meat probes for tracking internal temperature without lifting the lid.
Is the rotisserie kit included, or is it sold separately?›
The premium rotisserie kit is included with the QS 590iG. The 15,000 BTU stainless steel rear rotisserie burner is also built in, so you can use it right out of the box without any additional purchase.
How many meat probes are included?›
Two electronic meat probes are included. They connect with the iQue system in the main cookbox to give you internal temperature readings while cooking.
What stainless steel grade is used for the cabinet and cookbox?›
The cabinet system, cookbox, and Flav-R-Wave cooking system are all 304-grade stainless steel. The cookbox features cast aluminum end caps and a roll-action lid. The cooking grids are professional cast stainless steel. The cabinet and base use a premium powder-coat paint finish.
What storage does the QS 590iG include?›
The island includes four storage drawers in the main five-burner cabinet, a side burner cabinet with tank storage, and a one-door/one-drawer storage cabinet. All are part of the 304 stainless steel cabinet system.
Does the countertop, sink, and faucet come with the island?›
No. The granite countertop, stainless steel sink, and faucet are sold separately. Measure and budget for those items before installation to complete the island look.
Does the QS 590iG have built-in lighting for nighttime grilling?›
Yes. The island includes built-in lights in the cookbox and illuminated control knobs, making it easier to monitor food and adjust settings after dark.
What does the Flav-R-Wave cooking system do?›
The 304 stainless steel Flav-R-Wave system sits between the burners and the cooking grids, acting as a flame tamer that distributes heat evenly and vaporizes drippings to add flavor back into the food.
How does the QS 590iG compare to the QS 690iG?›
The primary difference is the oven layout. The QS 590iG has a single cookbox with five burners and 625 sq. in. of primary cooking space. The QS 690iG has two completely independent cookboxes — a 500 sq. in. large oven and a 250 sq. in. small oven — that can run at different temperatures simultaneously, plus six burners and 60,000 BTU of main output. Both use the iQue control system and 304 stainless steel construction throughout. If you regularly cook foods that need different heat levels at the same time, the 690iG is worth the step up. For most homeowners, the 590iG's single large cooking zone is plenty.
What is the Broil King Imperial QS 590iG warranty?›
Covered by Broil King's limited manufacturer warranty: limited lifetime coverage on the stainless steel/porcelain steel lid components and stainless steel cookbox; 15 years on cast stainless/stainless steel grids, Dual-Tube burners, side burner, rear burner, stainless steel Flav-R-Wave, stainless steel components, and remaining parts and paint warranty, honored directly by the manufacturer. Contact Broil King for warranty service and claims.
Does Deck & Den offer free shipping on the Broil King Imperial QS 590iG?›
