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How to Clean a Broil King Grill

Broil King is the Canadian premium-tier alternative to American premium brands. Here's the cleaning routine for any Broil King Imperial, Regal, Baron, or Monarch.

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Published February 9, 2026 · 5 min read

Broil King is one of the established Canadian premium grill brands. Their cookers — Imperial, Regal, Baron, Monarch lines — sit in a similar quality tier to Weber Summit and Napoleon Prestige, with Canadian engineering and a strong reputation for longevity.

The cleaning routine is largely standard premium gas grill maintenance, with a few Broil King-specific considerations.

What’s distinctive about Broil King

Dual-tube burners: Broil King’s signature burner design uses dual stainless tubes that distribute heat more evenly than single-tube burners on lower-tier grills. Cleaning is the same as standard burners; durability is higher.

Flav-R-Wave heat plates: Broil King’s branded flame tamer system — angled stainless plates that channel drippings while distributing heat. Similar to Weber flavorizer bars in function.

Cast iron cooking grates: thick, well-engineered. Develop excellent seasoning over years; need re-seasoning when stripped.

Glass-faced thermometer: more accurate and longer-lasting than plastic-faced thermometers on entry-level cookers.

Multiple model lines: Imperial (top tier), Regal, Baron, Monarch (entry premium). Cleaning routine is similar across; complexity scales.

After-cook routine (5 minutes)

  1. Brush the cast iron cooking grates while warm with a brass-bristle brush
  2. Wipe interior visible surfaces with a damp cloth
  3. Empty the grease tray if more than a third full
  4. Close the lid

Broil King cast iron grates respond well to immediate post-cook brushing — easier to clean while warm than after they’ve fully cooled.

Monthly routine (15-20 minutes)

With cooker cool:

Step 1: Pull cooking grates and Flav-R-Wave heat plates. The Flav-R-Wave plates lift out cleanly. Both go to a workspace for cleaning.

Step 2: Soak grates and Flav-R-Wave plates in hot soapy water with degreaser. Cast iron grates need light handling — don’t soak indefinitely (rust risk if soaking is extended). 15-20 minutes is plenty.

Step 3: Scrub with brass brush. Cast iron tolerates aggressive brushing. Stainless Flav-R-Wave plates same.

Step 4: Vacuum the firebox bottom. Standard procedure. Broil King fireboxes drain well but corners accumulate.

Step 5: Wipe the inside of the lid. Damp soapy rag. Broil King lid interiors clean up well.

Step 6: Re-oil cast iron grates after washing. Cast iron rusts quickly when wet. Apply thin layer of vegetable oil, let air-dry briefly, reinstall.

Step 7: Empty grease tray; clean tray housing.

Twice-a-year deep clean (90 minutes)

In addition to monthly:

  • Pull the dual-tube burners (Broil King’s burners are accessible)
  • Inspect and clean venturi tubes
  • Check burner port distribution
  • Verify glass thermometer accuracy with a separate probe
  • Inspect propane regulator and hose
  • Polish exterior stainless and porcelain components

Cast iron grate care

Broil King’s cast iron grates are excellent but need specific attention:

Seasoning maintenance: a healthy seasoning develops over 20-30 cooks. Don’t strip with soap unless restoring (rare). Most cleaning happens with brushing alone.

Rust prevention: keep grates oiled when stored. After every wash, dry thoroughly and apply thin oil layer.

Re-seasoning: when seasoning is stripped (after deep cleaning, or periodically), apply thin vegetable oil layer and run grill on high for 20 minutes to bake-on the seasoning. Repeat 2-3 times for solid seasoning.

Replacement: cast iron grates last 8-15 years on most Broil King grills. Replace when severely rusted or warped.

Broil King-specific issues

Cast iron grate rust: most-common Broil King-specific issue. Address quickly with wire brush, oiling, and re-seasoning.

Flav-R-Wave plate replacement: typically year 5-10. Replacement plates are model-specific and run $40-90 per set.

Burner replacement: dual-tube burners are durable but eventually need replacement (year 8-12). Brand-specific parts are widely available.

Glass thermometer durability: durable but can crack from impact. Replacement thermometers are inexpensive.

Cabinet door wear: hinges last well; occasional adjustment.

Broil King vs. other premium brands

Comparable cookers:

Broil King vs. Napoleon: both Canadian-engineered. Broil King’s cast iron grates vs. Napoleon’s wave grates is the main aesthetic/functional difference. Both age well. Choice often comes down to preference for the grate type.

Broil King vs. Weber Summit: Weber has a slightly larger ecosystem; Broil King’s cast iron grates are arguably better for searing. Both are excellent. Pricing is comparable.

Broil King vs. Bull, Fire Magic, Lynx: Broil King is meaningfully more accessible price-wise; the others are higher tier overall. Broil King is the “premium without breaking the bank” choice.

Lifespan

A maintained Broil King typically lasts 12-18 years. Cast iron grates may need replacement at year 8-12; Flav-R-Wave plates similar. Total replacement parts cost over a 15-year span: $300-500.

Frequently asked questions

Why does my Broil King have cast iron grates instead of stainless?

Broil King chose cast iron because it produces better sear marks and retains heat longer than stainless rods. The trade-off is more maintenance (don't soap, oil after washing). Many cooks prefer this trade-off; it's a deliberate design choice.

How often do I need to re-season the cast iron grates?

Heavily-stripped seasoning (after deep cleans or extended storage) needs full re-seasoning (3 oil + heat cycles). Routine maintenance after monthly cleans is one oil layer + brief high heat to set it. Practical answer: minor touch-up once a month; full re-season 1-2 times per year.

Can I use the same brushes and chemicals as on my Weber?

Yes for everything except the cast iron grates. Cast iron requires brass-bristle brushes (not stainless wire) and avoidance of soap on the established seasoning. For other components, standard premium grill cleaning chemistry applies.

How does the Flav-R-Wave system compare to Weber's flavorizer bars?

Functionally similar — both deflect drippings while distributing heat. The Flav-R-Wave's curved profile is engineered slightly differently, which Broil King argues produces more even heat distribution. In practice, both systems work well; the choice is largely aesthetic/brand preference.

Is Broil King worth the price over a Char-Broil?

For long-term ownership, yes. Broil King build quality, cast iron grates, and components are meaningfully more durable than entry-level Char-Broil. For 5+ year ownership, the math heavily favors Broil King. For 1-2 year ownership horizons (renters, etc.), Char-Broil is the more accessible price point.

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Topics: Brand Guides