By Miles SinclairUpdated November 2026
The weber genesis 2 gas grill line is one of the most recognizable names in backyard propane cooking, and the model in this review, the Genesis II S-310, is the three-burner option most home cooks look at first. It suits people who grill several times a week, cook for families or small groups, and want a stable, well-built cart with a sizable cooking surface and porcelain-enameled grates. It is less compelling for occasional grillers on a tight budget, people who need a very compact footprint, or anyone who wants built-in smoking or pellet-style automation. Read on for specs, trade-offs and what owner reports tend to say.
Weber Genesis II S-310 Natural Gas Grill
Product Overview
The Weber Genesis II S-310 is a natural gas grill, meaning it is set up to run on a home gas line rather than propane tanks. Manufacturers position the Genesis II line as a step up from entry-level Weber models, with a focus on even heat, durable construction and a cooking area suited to weeknight dinners and weekend gatherings. Weber’s Genesis series has long been known for its enclosed firebox design, which helps hold heat and keep flare-ups more controlled than open-cart grills.
Because it is a natural gas unit, your setup matters more than it would with a propane model. You will need a properly installed gas line with an appropriate connection and regulator, and a licensed installer or qualified professional should handle that work. Confirm your home’s gas supply and local code requirements before buying, since converting a grill between natural gas and propane generally requires the correct orifices and parts supplied by the manufacturer.
Within the broader lineup, the Genesis II sits in a middle tier. It is more substantial than a basic portable model and aims for a balance between cooking space, build quality and day-to-day convenience. If you are comparing it with a larger or smaller Weber, the Weber Genesis E-325 Gas Grill Review: Features and Performance covers a related Genesis model in more depth, and 7 Best Weber Genesis 3 Burner Gas Grill Models of 2026 gives a wider view of three-burner choices.
Key Features & Specifications
The table below lists features I can state with reasonable confidence based on the product name and well-known characteristics of this model. Verify exact dimensions and BTU ratings on the current manufacturer listing before purchase, since specifications can vary by production run and region.
| Feature | What It Means for You |
|---|---|
| Fuel type: natural gas | Connects to a home gas line; no propane tank swaps. Requires professional installation. |
| Three main burners | Lets you run direct heat on one or two zones and keep a third area for indirect cooking or warming. |
| Porcelain-enameled cast-iron cooking grates | Retain heat well for searing and resist rust better than bare steel when kept clean. |
| Enclosed cookbox with lid | Helps maintain steady temperatures and allows indirect cooking with the lid closed. |
| Built-in temperature gauge | Gives a rough reading of internal heat; useful for trend-watching, though not a substitute for a probe thermometer. |
| Side tables or prep space | Provides a place to stage food and tools near the grill. |
| Electronic or push-button ignition | Lights burners without matches when the igniter and gas supply are working correctly. |
| Grease management system | Routes drippings to a removable tray to simplify cleanup and reduce flare-up risk. |
Specifications such as total cooking area in square inches, exact BTU output and cabinet dimensions are important when comparing models. Check the manufacturer’s spec sheet for these numbers rather than relying on secondhand figures, and measure your patio or deck before ordering.
Pros & Cons
Pros
- Natural gas connection eliminates the need to refill or swap propane tanks.
- Three burners give useful zone control for mixed cooking tasks.
- Porcelain-enameled cast-iron grates hold heat well for sear marks.
- Enclosed cookbox design supports indirect cooking and steadier temperatures.
- Weber’s parts availability and service network are generally considered strong by owners.
- Grease tray system makes routine cleanup more manageable.
Cons
- Natural gas requires a dedicated line and professional installation, which adds upfront effort.
- Not portable; the cart-style frame is meant to stay in one place.
- Built-in thermometers are approximate and should be supplemented with a probe thermometer.
- Porcelain-enameled grates can chip if scraped aggressively or dropped during cleaning.
- Lacks dedicated smoker or pellet functions for low-and-slow barbecue.
Performance Analysis
Performance on a gas grill depends on three things: how evenly the burners distribute heat, how well the lid and firebox retain it, and how much grate space you actually have for the food you cook. Owners of Genesis-line grills frequently mention consistent heat once the unit has preheated for about 10 to 15 minutes on high with the lid closed. That preheat step matters for searing steaks, getting clean grill marks on vegetables and building a good surface on chicken thighs.
For indirect cooking, the usual method is to light the outer burners, leave the center burner off, and place food over the unlit section. With the lid closed, this setup works well for whole chickens, pork shoulder cut into smaller pieces, or thicker roasts, though a gas grill will not replicate the long smoke times of a dedicated offset smoker. Typical owner feedback is that the grill holds a steady range well for roasting and baking-style cooks, but barbecue purists looking for heavy smoke flavor often add wood chips in a smoker box or pair the grill with a separate smoker.
Flare-ups are less common in an enclosed cookbox than on an open grill, but fatty cuts like ribeyes and bacon-wrapped items can still spike. Keeping the grease tray clean and trimming excess fat before cooking reduces this. Owners often report that even heat across the cooking surface is good, with some variation near the edges and near the burner that has the highest output. Rotating food or moving it between zones addresses most of this.
Build quality is a major factor in long-term performance. Weber’s cookboxes and burners are commonly described by owners as sturdy, and cast-iron grates provide good thermal mass. Regular cleaning, including burning off residue after cooks and periodically deep cleaning the burners and grates, has a large effect on how well the grill performs over years. See How to Deep Clean Your Gas Grill's Burners and Grates for a detailed routine.
Who Should Buy This Product?
The Genesis II S-310 is a good fit if you have a home natural gas line near your patio or deck, cook outdoors most weeks, and want a grill that feels substantial and stays put. Families who grill chicken, burgers, vegetables and steaks regularly will get value from three burners and a generous cooking area. It also suits people who like the convenience of never buying propane again.
You should probably skip it if you have no gas line and cannot justify installing one, if you need to move the grill often, or if your cooking leans heavily toward smoked brisket and pork shoulder. Apartment balconies, tailgating and camping are poor matches. Similarly, if you want automatic temperature control with a controller and probe, a pellet grill will serve you better. The article Pellet Smoker vs Gas Grill (2026): Which Is Better for Your Backyard? lays out those trade-offs.
Buying Guide
Before buying any gas grill, confirm these points: fuel type and whether your home has a natural gas connection; available space, including clearance from walls and overhangs; the number of burners and total cooking area you need; and whether the grill allows indirect cooking with the lid closed. If you cook for a crowd, count square inches of primary cooking area rather than relying on marketing descriptions.
Also think about maintenance. Grates, burners and grease systems all need periodic attention. Check whether replacement parts are readily available for the model you choose, since that affects how long the grill stays useful. The guide Gas Grill Buying Guide: Features, Fuel, and Performance walks through these criteria in more detail.
If the Genesis II S-310 is not quite right, here are three well-known alternatives worth comparing:
- Weber Genesis E-415 Gas Grill (larger four-burner option for bigger gatherings):
Weber4 PureBlu® Burners, Porcelain-Enameled Cast-Iron Grates, Stainless Side Tables, Large Cooking Area, BBQ Grill, Outdoor Grill Genesis E-415 Gas Grill for Outdoor Cooking, Propane Grill, Black
- Weber Spirit E-210 Gas Grill (smaller two-burner option for limited space):
WeberWeber® Grill 2 Burners, Porcelain-Enameled Cast-Iron Grates, Snap-Jet Ignition, Weber Works™ Rails, BBQ Grill Spirit® E-210 Gas Grill, Outdoor Cooking, Small Propane Grill, Black
Each alternative trades cooking area, burner count or fuel flexibility differently. Compare them against your actual cooking habits, not just the burner count.
FAQ
Does the Weber Genesis II S-310 run on propane?
This model is designed as a natural gas grill. Converting between natural gas and propane generally requires the manufacturer’s conversion parts and a qualified technician. Check the current product documentation before attempting any conversion.
Do I need a professional to install a natural gas grill?
Yes, in most cases. Connecting a grill to a home gas line should be done by a licensed plumber or gas fitter who can test for leaks and confirm local code compliance.
Can I smoke meat on this grill?
You can do indirect cooking and low-temperature roasting with the lid closed, and many cooks add a smoker box with wood chips for smoke flavor. It will not match the long, steady smoke of a dedicated smoker or pellet grill, so consider a separate unit if barbecue is your main focus.
How do I clean the porcelain-enameled grates?
Preheat the grill, brush off residue with a stiff brass or stainless brush, and avoid aggressive metal scraping that can chip the enamel. Wipe with a damp cloth once cool. Keep the grates oiled lightly to prevent sticking and rust.
Is the built-in thermometer accurate?
Built-in lid thermometers give a general indication of heat but are not precise enough for critical cooking. Use an instant-read or leave-in probe thermometer for meat temperatures, and a separate grill thermometer at grate level if you want better air-temperature readings.
How much space do I need around the grill?
Follow the clearance requirements in the owner’s manual, which typically specify minimum distances from walls, overhangs and combustible materials. Keep the grill in an open, well-ventilated area and never use it inside an enclosed space.
What routine maintenance does a gas grill like this need?
Brush grates after each cook, empty and clean the grease tray regularly, check burners for blockages and inspect hoses and connections for leaks at least once a season. Deep cleaning and periodic burner inspection extend the grill’s life.
Final Verdict
The Weber Genesis II S-310 is a solid, well-engineered three-burner natural gas grill that rewards buyers who have a gas line, cook outdoors often and want reliable everyday performance over smoker-style features. Its enclosed design, cast-iron grates and burner layout suit family cooking and weekend gatherings. The main drawbacks are the installation requirement, its stationary nature and its limits for long smoke sessions. If those fit your situation, it is a strong choice. If not, look at the alternatives above or a pellet model.
Related reading
- Weber Gas Grill Parts Genesis: Where to Find and How to Replace Them
- Where to Find Parts for Weber Spirit Gas Grill: Identify and Replace
About Miles Sinclair
Miles Sinclair is part of our editorial team and reviews and edits our BBQ & grilling guides, checking product details against manufacturer specifications and owner feedback.
