Gas BBQ Buying Guide: What to Look For in 2026

Buying a gas BBQ without understanding the spec sheet is like buying a car without test driving it. Burner count, kW output, cooking area, grate material, ignition type and warranty terms all affect your cooking experience and how long your grill lasts through British weather. This guide explains every term in plain English so you buy with confidence.

Burners: How Many Do You Need?

2️⃣

2 Burners

Feeds 2 to 4 people. Compact footprint for small patios. Limited zone cooking. £149 to £399. Best for couples and small families.

3️⃣

3 Burners

Feeds 4 to 8 people. The sweet spot for most UK homes. Proper indirect cooking possible. £299 to £599. Our most recommended category.

4️⃣

4+ Burners

Feeds 8 to 12+ people. Full zone control for searing, roasting and warming simultaneously. £399 to £1,500+. For serious entertainers.

Cooking Area

Measured in cm². A standard burger needs roughly 100 cm², a steak 150 cm². So a 2,500 cm² cooking area handles about 16 burgers at once. Leave 20% space between items for even airflow.

Rule of thumb: Multiply your usual guest count by 150 cm² for steaks, or 100 cm² for burgers. Add 30% for breathing room. That is your minimum cooking area.

Heat Output (kW)

Higher kW means more total heat, but what matters is heat density: kW divided by cooking area. A compact 2-burner at 6 kW over 1,500 cm² produces higher heat per cm² than a 4-burner at 14 kW over 3,500 cm². Higher density = better searing.

Grate Materials

🟤

Cast Iron

Best heat retention and sear marks. Requires seasoning and drying to prevent rust. Found on Weber, Outback. Lasts 5+ years with care.

⚪

Porcelain-Coated

Non-stick surface, easier cleaning. Less heat retention than bare cast iron. Coating chips over time. Most common on mid-range models.

🔘

Stainless Steel

Most durable, lowest maintenance. Needs seasoning for best sear results. Found on Napoleon and premium models. Lasts 10+ years.

Ignition Systems

Electronic push-button: Battery powered, most reliable. Found on Weber, Napoleon, Char-Broil. Replace battery annually. Piezo: Spring-loaded spark, no battery needed. Less reliable in damp conditions. Common on budget models. JETFIRE: Napoleon's individual burner ignition. Lights each burner separately with a visible flame jet. Most reliable system we tested.

Warranty: What It Really Covers

Not all warranties are equal. A "10-year warranty" usually covers the firebox and lid, not burners or grates. Read the fine print.

Warranty comparison: Weber covers everything for 10 years. Napoleon covers the firebox for 15 years, burners for 10. Char-Broil covers the firebox for 5 years. Outback covers the whole unit for 2 years only.

Best Gas BBQs 2026 Best 4-Burner BBQs Best Under £500 Gas vs Charcoal

Frequently Asked Questions

Q How many burners do I need?

Two burners for 2 to 4 people. Three burners for 4 to 8 people (the most popular choice in the UK). Four burners for 8+ people or regular entertaining. More burners also mean more heat zones for indirect cooking.

Q What does kW mean on a gas BBQ?

Kilowatts (kW) measure total heat output. A 3-burner BBQ typically outputs 8 to 10 kW. Higher kW does not always mean better cooking. What matters is kW per square centimetre of cooking area (heat density). A compact 6 kW BBQ can sear better than a large 14 kW one.

Q Do I need a BBQ cover?

In the UK, absolutely. Rain, frost and UV damage degrade metal and paint within 1 to 2 seasons without cover protection. A £25 to £40 fitted cover extends your BBQ life by 3 to 5 years. The best investment you can make after buying the grill.

Q Propane or butane for a gas BBQ?

Propane. Nearly all UK gas BBQs use propane (Calor Patio Gas). Propane works in temperatures down to -40°C, while butane stops vaporising below 0°C. For UK weather, propane is the only sensible choice. Campingaz uses a butane/propane mix.

James Cooper

BBQ & Outdoor Cooking Expert

James has been testing gas barbecues in UK gardens for 8 years. A former chef turned outdoor cooking writer, he has tested over 50 gas BBQs across every price range, from budget 2-burner models to premium 6-burner setups. His reviews are based on real cooking sessions, temperature gun readings, and long-term durability tests through British weather.

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