Built-in Hob Installation Guide for Pakistani Homes
A built-in hob (also called a built-in gas hob, countertop hob, or simply bilt-in chulha in everyday Urdu) transforms any kitchen from functional to modern. But buying the right hob is only half the job — installing it correctly is what keeps your family safe and your kitchen working smoothly for years to come.
Whether you have a granite countertop, marble slab (sangmarmar), or engineered stone worktop, this guide walks you through everything: how to measure and cut the opening, how to connect LPG (cylinder gas) or natural gas (sui gas), what safety checks to run, and how to choose the best Mobi Gas built-in hob for your kitchen layout.
If you are renovating a kitchen in Karachi, Lahore, Islamabad, or anywhere across Pakistan, bookmark this page — it covers every step in plain language, with no guesswork.
What Is a Built-in Hob and Why Pakistani Kitchens Love It
A built-in hob is a gas cooktop designed to sit flush inside a cutout in your kitchen counter. Unlike a freestanding stove or a table-top chulha, the hob has no body below the burners — the worktop surface itself frames the appliance, giving your kitchen a clean, seamless look.
Pakistani households have increasingly moved toward built-in hobs over the past decade, and for good reason:
- Space saving — No bulky legs or side panels. The counter stays clear.
- Easy cleaning — A flat or slightly recessed surface means no hard corners to scrub. Steel drip trays wipe clean in seconds.
- Modern look — Black tempered glass or brushed stainless finishes match contemporary Pakistani kitchen designs.
- Versatile burner options — 2-burner, 3-burner, and 5-burner configurations suit everything from a small apartment kitchen to a large family kitchen (bara ghar ka rasoi).
Mobi Gas manufactures built-in hobs in Pakistan since 2001, with models specifically calibrated for local LPG cylinder pressure and sui gas line pressure. Browse the full Mobi Gas Built-in Hobs collection to see current models and pricing.
Before You Begin: Tools, Materials, and Safety Checklist
Tools You Will Need
- Measuring tape and pencil or chalk marker
- Jigsaw (electric) or angle grinder with cutting disc — for marble, granite, or engineered stone
- Screwdriver (flathead and Phillips)
- Adjustable wrench or spanner set
- PTFE thread seal tape (also called Teflon tape or plumber's tape)
- Soap water solution (for leak detection) — mix dish soap in a spray bottle of water
- Silicone sealant (food-grade, heat-resistant)
- Spirit level
Safety Checklist Before Cutting or Connecting
- Turn off the gas supply. Close the cylinder valve completely or shut off the sui gas meter. Never begin any installation with gas flowing.
- Ensure ventilation. Work with windows open. Gas fumes in an enclosed kitchen can be dangerous.
- Check the worktop thickness. Most Pakistani marble and granite countertops are 18–20 mm thick. Your hob's installation bracket should match.
- Keep a fire extinguisher nearby when doing first-time ignition tests.
- Read the hob's manual. Every Mobi Gas hob comes with a Urdu/English installation sheet. Follow the model-specific torque and clearance specs.
Important: If you are not confident cutting into a marble or granite countertop, hire a local stone-cutter (pathar karne wala) for the cutout step only. The gas connection should always be done by, or verified by, a licensed gas fitter.
How to Measure and Mark the Countertop Cutout
Getting the cutout dimensions exactly right is the most critical step. A cutout that is too large means the hob will fall through; too small and it will not sit flush.
Standard Mobi Gas Cutout Dimensions by Model Size
Always confirm dimensions from the installation sheet included with your specific hob. The figures below are general reference ranges for common Pakistani kitchen hob sizes:
| Hob Type | Overall Dimensions (approx.) | Cutout Dimensions (approx.) | Min. Cabinet Depth Below |
|---|---|---|---|
| 2-Burner Built-in Hob | 580 × 300 mm | 520 × 250 mm | 120 mm |
| 3-Burner Built-in Hob | 680 × 380 mm | 630 × 330 mm | 120 mm |
| 4-Burner Built-in Hob | 760 × 450 mm | 700 × 390 mm | 120 mm |
| 5-Burner Built-in Hob | 900 × 500 mm | 840 × 445 mm | 120 mm |
Note: Always verify the exact cutout size printed on your hob's packaging or manual. Even a 5 mm error can affect the fit.
Step-by-Step Marking Process
- Place the hob face-down on the countertop where you intend to install it.
- Trace the outer edge lightly with chalk.
- Using the cutout template (included in box), center it within your outer tracing and mark the actual cut line.
- Double-check that the cutout does not overlap any cabinet support beams or plumbing below.
- Mark all four corners with a drill point before running the jigsaw — this prevents cracking at corners, especially in marble (sangmarmar) and quartz surfaces.
Cutting the Countertop: Marble, Granite, and Engineered Stone
For Marble (Sangmarmar) Countertops
Marble is common in Pakistani kitchens but is brittle and prone to cracking if cut carelessly. Use a diamond-tipped blade on an angle grinder. Keep the blade wet (have someone slowly pour water along the cut line) to prevent overheating and to reduce dust. Cut slowly and steadily — do not force the blade.
After cutting, sand the edges lightly with fine-grit sandpaper and seal the exposed marble edge with clear sealant to prevent moisture ingress.
For Granite Countertops
Granite is harder than marble and requires a professional-grade diamond blade. The cutting technique is the same — wet cutting, slow feed rate, pre-drilled corner holes. Many granite suppliers in Pakistan offer on-site cutting services. If your granite was installed by a local contractor, call them back for the cutout — it is often cheaper than renting specialist tools.
For Engineered Stone / Ceramic Tiles
Engineered stone (like Caesarstone or local Pakistani equivalents) cuts similarly to granite. For tiled countertops, use a tile-cutting blade and expect some chipping at the tile grout lines — apply grout repair or silicone afterward for a clean finish.
For Wooden or MDF Countertops
Less common in Pakistani kitchens but used in some modern designs — a standard jigsaw blade works well. Always seal the cut wood edge with heat-resistant silicone or wood sealant before dropping in the hob, to prevent warping from heat and moisture.
Dropping In and Securing the Built-in Hob
- Apply silicone sealant. Run a bead of food-grade, heat-resistant silicone around the top edge of the cutout. This creates a waterproof seal between the hob rim and countertop, preventing water from dripping into the cabinet below.
- Lower the hob into the cutout. Tilt it slightly and lower one side first. Have a helper support the weight. The hob should sit flush against the countertop surface.
- Attach the mounting brackets. Mobi Gas hobs come with stainless steel mounting clips. From beneath the counter (inside the cabinet), hook the clips onto the hob frame and tighten the screws evenly — alternate sides so the hob seats evenly without rocking.
- Check with a spirit level. The hob surface must be perfectly level. An unlevel hob means pots slide, burner caps don't seat correctly, and gas flow is uneven.
- Wipe away excess silicone from the countertop surface before it cures (usually within 30 minutes).
Gas Connection: LPG Cylinder vs Sui Gas (Natural Gas)
This is the most technically sensitive step. In Pakistan, most households use one of two gas sources: LPG cylinders (cylinder gas / liquid petroleum gas) or sui gas (natural gas piped from the national network). The hob's gas inlet regulator must be set correctly for whichever source you use.
Connecting to an LPG Cylinder
- Make sure the cylinder valve is fully closed before connecting.
- Check that your regulator is rated for LPG (not natural gas). LPG regulators in Pakistan are typically low-pressure, 30 mbar output. Confirm this matches your hob's spec sheet.
- Connect the flexible gas hose from the regulator to the hob's gas inlet fitting. Use PTFE tape on the threads for a gas-tight seal.
- Hand-tighten first, then give one quarter-turn with a spanner. Do not over-tighten — brass fittings can strip.
- Check hose length — the hose must not be kinked, stretched, or running over a heat source. Keep it routed through the back of the cabinet.
Connecting to Sui Gas (Natural Gas)
- Sui gas connection should always be done by, or at minimum inspected by, a SSGC/SNGPL-certified gas fitter. This is a legal and safety requirement in Pakistan.
- The hob's burner injectors must be set to natural gas mode. Most Mobi Gas hobs come dual-configured or include a conversion kit for switching between LPG and natural gas. Refer to your model's manual for injector size details.
- The connection uses a rigid copper pipe or approved flexible steel braided hose from the wall gas point to the hob inlet.
- A gas isolation valve (on/off cock) should be fitted on the pipe, accessible without moving the hob.
Leak Test — Do Not Skip This Step
After every connection, perform a soap water leak test before lighting any burner:
- Open the gas supply slowly.
- Spray or brush soapy water over every joint, fitting, and connection point.
- Watch for bubbles. Any bubbling indicates a gas leak — close the supply immediately, tighten or re-seal the joint, and retest.
- Do not attempt to ignite the hob until the leak test passes completely.
Never use a naked flame to test for gas leaks. The soap water method is the only safe approach.
First Use: Burner Caps, Ignition, and Flame Adjustment
Seating the Burner Caps and Pan Supports
Before first ignition, make sure all burner caps (topi) are correctly seated on their bases. A misaligned burner cap causes uneven flame, yellow flame, or ignition failure. Pan supports (the cast iron grids) should sit flat and stable — wobbly pan supports are a safety hazard.
First Ignition
- Push and turn the knob to the maximum flame position.
- Hold the knob down for 3–5 seconds after ignition to allow the thermocouple (flame failure device) to heat up and stay open.
- If the burner does not ignite on the first try, release the knob, wait 30 seconds for any gas to dissipate, and try again.
- On first use, some burners may produce an orange or yellow flame for a few minutes. This is normal — it is dust or packaging residue burning off. The flame should stabilize to blue within 1–2 minutes.
Flame Adjustment and Simmer Test
Test each burner at full flame, medium, and minimum (simmer) positions. The flame should be stable and blue at all settings. An unstable, lifting, or predominantly yellow flame at minimum setting usually indicates the burner injector needs adjustment — consult a gas technician or contact Mobi Gas after-sales support.
Kitchen Clearance and Ventilation Requirements
Installation is not just about the hob itself — the space around it matters for safety and performance.
Minimum Clearances
- Above the hob: At least 650–750 mm to any overhead cabinet or extractor hood. In Pakistani kitchens where overhanging cabinets are common (upar ki almari), measure carefully before finalizing hob position.
- Side clearances: At least 50 mm on each side to any upright surface or splash tile.
- Below the hob: The cabinet beneath must have at least 120 mm of clear air space. Do not store combustible materials directly under the hob.
Ventilation
Gas cooking produces carbon dioxide, water vapor, and in incomplete combustion cases, carbon monoxide. Good kitchen ventilation is critical in Pakistan's often compact kitchen layouts:
- Install a range hood / kitchen exhaust fan above the hob. Mobi Gas recommends a vented hood (ducted to outside) over a recirculating filter hood.
- At minimum, open a window or door while cooking, especially in enclosed kitchens.
- If you frequently notice headaches or drowsiness while cooking, have your gas connection and burners checked — this can be a sign of incomplete combustion.
Choosing the Right Mobi Gas Built-in Hob for Your Kitchen
Not all built-in hobs are the same. Here is how to match the right model to your kitchen:
By Burner Count
- 2-Burner Hob — Ideal for apartments, studio kitchens, or secondary cooking areas. Compact and easy to install.
- 3-Burner Hob — A popular choice for medium-sized Pakistani family kitchens. Fits most standard countertop lengths.
- 4–5 Burner Hob — For larger families, joint family setups (mila jula ghar), or kitchens where multiple dishes are cooked simultaneously. Requires a wider countertop — typically 90 cm or more.
By Finish
- Black Tempered Glass — Sleek, modern, very popular in new construction. Scratches are less visible. Requires gentle cleaning with non-abrasive cloth.
- Stainless Steel — Classic, durable, and easier to repair surface scratches. Suits both traditional and contemporary Pakistani kitchen designs.
- Cast Iron / Heavy-Duty Steel — More common in models built for heavy daily cooking. Heavier but extremely durable.
By Gas Type Compatibility
Confirm before ordering whether you need an LPG model or a natural gas (sui gas) model. Most Mobi Gas hobs support both with injector conversion, but always check the product page or ask customer support before purchase.
View all available models on the Mobi Gas Built-in Hobs collection page. If you need a standalone stove or table-top option instead, see the Mobi Gas Gas Stoves collection.
Common Built-in Hob Installation Mistakes in Pakistani Homes
- Skipping the leak test. The most dangerous mistake. Always test before ignition, every single time.
- Wrong cutout size. Measure twice, cut once. A cutout even 10 mm too large means the hob rim does not cover the gap — you will see the raw countertop edge and the hob may rock.
- Using the wrong gas hose. Not all flexible hoses are approved for gas. Use only EN 14800-certified or Pakistan Standards-approved gas hose. Old cracked hoses are a common cause of kitchen gas accidents.
- Not sealing the countertop edge. Unsealed marble edges around the hob cutout absorb water and grease, leading to staining and structural damage over time.
- Incorrect burner injectors for gas type. Running LPG injectors on natural gas (or vice versa) results in a roaring or lifting flame, soot deposits, and potential carbon monoxide buildup. Always convert injectors for your gas type.
- Ignoring overhead clearance. Wooden cabinets directly above the hob — even 400 mm above — will discolor, warp, and eventually become a fire risk. Maintain at least 650 mm clearance.
Built-in Hob Maintenance Tips for Long Life
Daily Cleaning Routine
- Wipe the hob surface after each use, once it has cooled. A damp microfibre cloth removes 90% of everyday splatter.
- For glass hobs: use a glass-safe cooktop cleaner. Avoid abrasive scouring pads — they permanently scratch tempered glass.
- For stainless steel: wipe in the direction of the grain to avoid swirl marks.
Weekly Deep Clean
- Remove burner caps and pan supports. Soak in warm soapy water for 10–15 minutes, scrub with a soft brush, rinse and dry completely before replacing.
- Check the burner holes for blockages. A blocked burner port produces uneven flame. Use a toothpick or thin wire to clear — never a toothpick that can break inside the port.
Annual Checks
- Inspect the gas hose for cracks, kinks, or discoloration. Replace immediately if damaged — hose lifespan is typically 5 years.
- Test all thermocouple (flame failure) devices. Each burner should hold flame within 3–5 seconds of ignition. If it keeps going out, the thermocouple needs adjustment or replacement.
- Re-apply silicone sealant around the hob rim if it has cracked or peeled.
Frequently Asked Questions (FAQs)
What is the standard cutout size for a built-in hob in Pakistan?
Cutout sizes vary by hob model, but for a standard 3-burner built-in hob the cutout is typically around 630 × 330 mm, and for a 5-burner hob approximately 840 × 445 mm. Always refer to the installation sheet that comes with your specific Mobi Gas model for the exact dimensions — even small variations between models can affect the fit.
Can I install a built-in hob on a marble countertop (sangmarmar)?
Yes, marble is one of the most common countertop materials in Pakistani kitchens and is fully compatible with built-in hob installation. Use a diamond wet-cutting blade to cut the opening, work slowly to prevent cracking, and seal the cut edge with clear silicone before dropping in the hob. If you are not experienced with stone cutting, hire a local stone-cutter to handle the cutout.
How do I know if my built-in hob is compatible with LPG or sui gas?
All Mobi Gas built-in hobs are designed for use in Pakistan and support both LPG (cylinder gas) and natural gas (sui gas) through an injector conversion kit. Check the product page or the manual for your model — it will list the injector sizes for each gas type. If you are unsure, contact Mobi Gas customer support before purchase.
Do I need a professional to install a built-in hob?
For the cutout and drop-in, a handy homeowner can manage with the right tools. However, the final gas connection — especially to a sui gas line — should always be checked by a certified gas fitter. It is also required by SSGC/SNGPL regulations in most regions of Pakistan. For LPG connections, at minimum perform a soap water leak test before first use.
What is the minimum cabinet depth needed below a built-in hob?
At least 120 mm of free air space is needed directly below the hob body. The gas hose or pipe connection also requires enough room to route without kinking. Most standard Pakistani kitchen cabinets (almari) are 500–600 mm deep, which is more than sufficient.
Why is my built-in hob producing a yellow or orange flame?
A yellow or orange flame usually means the air-to-gas mixture is off. Common causes include: wrong injector size for the gas type being used, a blocked burner port, a misaligned burner cap, or low gas pressure from the cylinder. Clean the burner cap and ports first. If the problem persists, have a gas technician inspect the injector size and pressure settings.
How long does a built-in hob last?
With regular maintenance, a good quality built-in gas hob should last 10–15 years or more. The most commonly replaced parts over time are the gas hoses (every 5 years), thermocouple sensors, and igniter electrodes. Mobi Gas offers spare parts and after-sales service across Pakistan.
Can I install a built-in hob in a kitchen with no window (band rasoi)?
You can, but adequate mechanical ventilation is essential. Install a ducted kitchen exhaust fan that vents to outside the building. A recirculating hood with carbon filters is a second option but is less effective at removing combustion gases. Poor ventilation in an enclosed kitchen with a gas hob is a serious health and safety risk.
Final Thoughts
Installing a built-in hob in a Pakistani home is very achievable — with the right measurements, the right tools, and careful attention to gas safety. The key steps are: accurate countertop cutout, secure mounting, a properly matched gas connection, and a thorough leak test before first use.
A well-installed Mobi Gas built-in hob will serve your kitchen for over a decade, delivering powerful, consistent flame whether you are cooking daal on a gentle simmer or frying pakoray at full heat. Mobi Gas hobs are designed and tested for Pakistani gas conditions — LPG cylinder or sui gas — so you are buying a product built for your home.
If you have any questions about which model suits your kitchen, our team is available via WhatsApp and the website contact form. We are happy to advise on cutout dimensions, gas compatibility, and after-sales support.
Ready to Upgrade Your Kitchen?
Browse Mobi Gas's full range of built-in hobs — available in 2, 3, 4, and 5 burner configurations with tempered glass and stainless steel finishes, designed for both LPG and sui gas.
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