Broil King Imperial QS 590iH – The Outdoor Kitchen Island That Thinks While You Grill
Five burners, smart iQue temperature control, 304 stainless cabinetry, and a rear rotisserie burner — everything your outdoor kitchen needs, in one finished island.
Most outdoor kitchen setups demand compromises — a bare grill head, a cabinet you source separately, storage you figure out later. The Imperial QS 590iH skips all of that. You get 55,000 BTUs across five stainless Dual-Tube burners and 875 square inches of total cooking space, with Broil King's iQue connected temperature system guiding every cook from smoke to sear. Two electronic meat probes and three preset modes — Smoke, Roast, Grill — take the guesswork out of larger cuts. The 304 stainless steel cabinet base, four storage drawers, a 10,000 BTU side burner, and illuminated knobs for night grilling round out a package that arrives looking and working like a complete, finished outdoor kitchen.
What Sets the Imperial QS 590iH Apart
A fully integrated grill island built around smart control, serious burner power, and finished 304 stainless steel cabinetry.
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55,000 BTU Main Burners
Five stainless steel Dual-Tube burners blanket 625 sq. in. of primary surface with wall-to-wall searing heat.
875 sq. in. Total Cooking Space
Primary grate plus stainless steel warming rack — enough room for steaks, sides, and a full crowd's worth of food at once.
iQue Smart Temperature Control
Smoke, Roast, and Grill presets with two electronic meat probes guide every cook from start to finish.
15,000 BTU Rear Rotisserie Burner
Infrared rear heat plus an included premium rotisserie kit — whole birds and roasts with no secondary setup needed.
304 SS Island Cabinetry
Four storage drawers, a side burner cabinet with tank storage, and a one-door/one-drawer cabinet — finished outdoor kitchen from day one.
10,000 BTU Side Burner
Range-style side burner handles sauces, sides, and boils right on the island — no trip back inside.
What's Included in the Box
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Broil King Imperial QS 590iH Grill Island
- Five-burner 304 stainless steel grill island cabinet with four storage drawers
- Five stainless steel Dual-Tube main burners
- Professional cast stainless steel cooking grids
- 304 stainless steel Flav-R-Wave cooking system
- 304 stainless steel cookbox with cast aluminum end caps
- iQue burner temperature control and monitoring system
- Premium rotisserie kit
- Stainless steel warming rack
- Two electronic meat probes
- 10,000 BTU range side burner with side burner cabinet and tank storage
- 15,000 BTU stainless steel rear rotisserie burner
- One-door / one-drawer storage cabinet
- Roll-action lid with cast aluminum end caps
- Sure-Lite electronic ignition
- Built-in cookbox lights and illuminated control knobs
- Slide-out grease tray system
- Premium thermometer
Sold Separately
- Granite countertop
- Stainless steel sink
- Faucet
Deep Dive — Imperial QS 590iH
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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 590iH 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 590iH 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.
Broil King Imperial QS 590iH Features & Benefits
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iQue burner control: Helps bring connected temperature monitoring and guided cooking to the main cookbox.
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Five stainless steel Dual-Tube burners: Delivers strong, even main burner performance across a generous grilling surface.
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Range side burner and rear rotisserie burner: Expands what you can cook outdoors, from sauces and sides to rotisserie meals.
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Professional cast stainless steel cooking grids: Offers a more substantial grilling surface with premium feel and durability.
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304 stainless steel island cabinetry: Adds durable storage and a cleaner, built-in outdoor kitchen presentation.
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Built-in lights and illuminated knobs: Makes nighttime grilling more comfortable and easier to manage.
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Slide-out grease tray system: Helps simplify cleanup after everyday cooking and larger gatherings.
Who It's For — The Deck & Den Take
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This island is built for the homeowner who wants a complete outdoor kitchen without the project — someone who'd rather spend a Saturday cooking than sourcing a cabinet, a grill head, and a side burner separately and hoping they all fit together. The iQue system is genuinely useful if you grill with confidence but aren't always sure when that thick ribeye or whole chicken is actually done. The meat probes take that uncertainty off your plate.
Who might want to look elsewhere: if you already have a built-in grill you love and just need cabinetry around it, this island is more than you need. And if you're a purist who wants full manual heat control and nothing digital between you and the flame, the iQue layer may feel like more system than you asked for.
One real-world tip: the granite countertop, sink, and faucet are all sold separately. Budget for those before you buy — they're the finishing touches that make this island look the way it does in the photos.
- Homeowners who want a polished outdoor kitchen without piecing together components
- Grillers who want smart temperature guidance without giving up gas performance
- Entertainers who need serious burner capacity — 875 sq. in. of total cooking space handles a crowd
- Shoppers who want rotisserie capability included, not as an afterthought
- Evening grillers who appreciate illuminated knobs and built-in cookbox lighting
- Buyers comparing premium outdoor kitchen islands who want 304 stainless steel construction throughout
Full Specifications & Dimensions
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Broil King Imperial QS 590iH Specifications
| Brand |
Broil King |
| Model |
Imperial QS 590iH |
| Product Type |
Outdoor kitchen grill island |
| Fuel Options |
Natural gas or liquid propane |
| 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 |
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 |
| Cookbox |
304 stainless steel cookbox with cast aluminum end caps |
| Control System |
iQue burner temperature control and monitoring |
| Preset Modes |
Smoke, Roast, Grill |
| Meat Probes |
Two electronic meat probes (included) |
| Thermometer |
Premium thermometer |
| Heat Control |
Linear-Flow valves with 180° precision control |
| Ignition |
Sure-Lite electronic ignition |
| Lid Design |
Roll-action lid with cast aluminum end caps |
| Handles |
Stylish and durable 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 |
| 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 |
Premium rotisserie kit, stainless steel warming rack, two electronic meat probes |
| Sold Separately |
Granite countertop, stainless steel sink, and faucet |
| Assembled Dimensions |
126.85" W × 30.9" D × 49.12" H |
Warranty, Shipping & Returns
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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.
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Shipping: Free shipping on this item.
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Returns: Review our returns policy for full details.
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Price Match: Found a lower price? We'll match it — see our price match guarantee.
Manuals & Documents
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Frequently Asked Questions
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Does the Broil King Imperial QS 590iH come in natural gas and liquid propane versions?›
Yes. The QS 590iH is available in both natural gas and liquid propane configurations. Be sure to select the correct fuel type for your setup at the time of purchase.
What is the total BTU output of the QS 590iH?›
The five main Dual-Tube burners produce 55,000 BTU combined. The rear rotisserie burner adds 15,000 BTU, and the range side burner adds 10,000 BTU, for a total system output of 80,000 BTU.
How much cooking space does the QS 590iH have?›
The QS 590iH has 625 square inches of primary cooking surface and 875 square inches of total cooking space including the stainless steel warming rack.
What is the iQue system and how does it work?›
iQue is Broil King's connected burner temperature control and monitoring system built into the main cookbox. It offers three preset cooking modes — Smoke, Roast, and Grill — and works with the two included electronic meat probes to help you monitor internal food temperature throughout the cook.
Is the rotisserie kit included with the QS 590iH?›
Yes. A premium rotisserie kit is included in the box along with the 15,000 BTU rear rotisserie burner. No separate rotisserie purchase is needed.
Are the meat probes included?›
Yes. Two electronic meat probes are included and work with the iQue control system to monitor food temperature during cooking.
What is not included with the QS 590iH island?›
The granite countertop, stainless steel sink, and faucet are all sold separately. These are finishing components you would source and add to complete the look shown in the product images.
What material is the island cabinetry made from?›
The cabinet is built from 304 stainless steel with a premium powder-coat paint finish on the cabinet and base. The cookbox is also 304 stainless steel with cast aluminum end caps.
How much storage does the QS 590iH island have?›
The island includes four storage drawers in the main five-burner cabinet, a side burner cabinet with propane tank storage, and a one-door / one-drawer storage cabinet.
Does the QS 590iH have lighting for nighttime grilling?›
Yes. The island features built-in lights in the cookbox and illuminated control knobs, making it easy to grill and monitor settings after dark.
What type of ignition does the QS 590iH use?›
The QS 590iH uses Broil King's Sure-Lite electronic ignition system.
How does the heat control system work?›
The QS 590iH uses Linear-Flow valves with 180° of precision control, allowing you to dial in heat levels across the full range from low to high with fine adjustment in between.
Is the QS 590iH a standalone island or a built-in grill head?›
The QS 590iH is a complete, self-contained outdoor kitchen grill island — not a built-in grill head. It comes with the cabinet, drawers, side burner station, and all components included. You do not need to build or source a separate cabinet structure.
What are the cooking grid and cooking system materials?›
The cooking grids are professional cast stainless steel. The cooking system is Broil King's 304 stainless steel Flav-R-Wave system, which sits below the grids and manages heat distribution and flavor vaporization.
Does Deck & Den offer free shipping on the QS 590iH?›
Yes. Free shipping is included. See our shipping policy for full details including delivery method and estimated lead times.
