1. What is the difference between LPG and natural gas and can my gas stove use both?

Understanding the difference between LPG and natural gas is important for gas stove maintenance and repair — because a stove configured for one gas type cannot simply be connected to the other without modification:

LPG — liquefied petroleum gas — is the most common gas type used in Durban homes. LPG is stored under pressure as a liquid in portable cylinders — the familiar blue or orange gas cylinders found in South African homes. When the cylinder valve is opened the LPG vaporises and flows to the stove as a gas. LPG is a mixture of propane and butane and operates at a higher pressure than natural gas — typically 2.8 kPa through the stove regulator.

Natural gas — also called reticulated gas or piped gas — is supplied through a fixed pipe network directly to the property. Natural gas is predominantly methane and operates at a lower pressure than LPG — typically 1.0 to 2.0 kPa. Natural gas is available in some Durban suburbs through the Egoli Gas or similar distribution networks. Natural gas has the advantage of an uninterruptible supply — no cylinder emptying at an inconvenient moment.

Can a gas stove use both? Not without modification. The two gases have different energy content and flow characteristics — a stove configured for LPG has gas jet orifices sized for LPG flow rates. If connected to natural gas without changing the jets the flame will be weak and incomplete combustion will occur — producing a yellow flame and potentially carbon monoxide. Converting a gas stove between LPG and natural gas requires replacing the gas jets — the small orifice fittings in each burner — with the correct size for the other gas type. Our certified technicians carry jets for both gas types and perform gas stove conversions across Durban in compliance with SANS 10087. WhatsApp us on +27 79 976 2941.

2. How do I correctly light a gas burner that has a faulty igniter using a match or lighter?

If your gas stove igniter has failed and you need to use the stove while waiting for a repair visit our certified technicians advise the following procedure for safely lighting a gas burner manually — this is a temporary measure only and the igniter fault should be repaired as soon as possible:

Safety considerations before manual lighting: • Manual lighting requires you to bring a flame source close to the burner before turning the gas on — or simultaneously. Never turn the gas on first and then bring the flame — accumulated gas ignites explosively. • Ensure there is no gas smell in the kitchen before attempting manual lighting — a gas smell indicates a leak that must be addressed before any ignition attempt • Ensure the kitchen is adequately ventilated • Keep children away from the stove during manual lighting

Correct manual lighting procedure:

1. Prepare your ignition source — a long-reach lighter is the safest option. A short lighter or match requires your hand to be close to the burner and is not recommended for repeated manual lighting.
2. Position the lit lighter or burning match at the edge of the burner — at the burner holes — before turning the gas on
3. Turn the gas knob to the ignite or high position — the burner should light immediately
4. If the burner does not light within 2 seconds turn the gas off immediately — allow any accumulated gas to disperse for 30 seconds before trying again
5. Once the burner is lit adjust the flame to the desired setting
6. After each use confirm the burner is fully extinguished when turned off — a non-functioning igniter means you cannot use the audible click as confirmation that the knob is in the correct off position

Do not use manual lighting as a permanent solution — a faulty igniter should be repaired by a certified technician. WhatsApp us on +27 79 976 2941 for a same-day igniter repair across Durban.

3. What is carbon monoxide and how does a gas stove produce it?

Carbon monoxide — CO — is a colourless, odourless, tasteless gas that is produced when any carbon-containing fuel burns incompletely. Unlike the distinctive smell of LPG or natural gas you cannot detect carbon monoxide without a dedicated detector — which is why it is known as the silent killer.

How a gas stove produces carbon monoxide: Gas stoves produce carbon monoxide when the gas does not burn completely. Complete combustion of LPG or natural gas produces carbon dioxide and water vapour — neither of which is harmful in normal concentrations. When combustion is incomplete — due to insufficient oxygen, incorrect gas pressure or a dirty burner — carbon monoxide is produced instead of carbon dioxide.

Specific gas stove conditions that produce excessive carbon monoxide: • Yellow or orange flame — a flame that is not predominantly blue is burning incompletely and producing carbon monoxide • Blocked air inlets on the burner venturi — restricts the air supply required for complete combustion • Incorrect gas pressure — either too high or too low causes incomplete combustion • Cooking in an unventilated kitchen for extended periods — even a correctly functioning gas stove produces some carbon monoxide. Adequate ventilation is essential. • Blocked or partially blocked burner holes causing uneven combustion

Carbon monoxide poisoning symptoms — headache, dizziness, nausea, confusion and fatigue. Symptoms are often mistaken for flu. If multiple people in the household experience these symptoms simultaneously during or after gas stove use ventilate the property immediately, exit the building and contact emergency services.

Practical protection measures: • Install a carbon monoxide detector in your kitchen — a basic detector costs between R200 and R500 and provides potentially life-saving early warning • Always ensure adequate kitchen ventilation when using a gas stove — open a window or ensure the extractor fan is running • Have your gas stove serviced by a certified technician annually — a correctly maintained and adjusted gas stove produces minimal carbon monoxide • Never use a gas stove as a space heater — running a gas stove in a closed room to generate warmth is extremely dangerous

If your gas stove is producing a yellow or orange flame WhatsApp us on +27 79 976 2941 for a same-day assessment across Durban.

4. How do I check if my gas cylinder is empty or nearly empty?

A gas cylinder that runs out during cooking is a common frustration — but there are several ways to monitor gas levels and avoid being caught out:

The hot water method — the most reliable low-tech test:

1. Pour a cup of hot water slowly down the side of the cylinder
2. Run your hand down the cylinder from top to bottom
3. The section of the cylinder containing liquid LPG will feel noticeably cooler than the section above the gas level — because the liquid LPG absorbs heat from the hot water
4. The boundary between the warm upper section and the cool lower section indicates the current LPG level

The weight method: • Every gas cylinder has its tare weight — the weight of the empty cylinder — stamped on the collar at the top of the cylinder • Weigh your cylinder on a bathroom scale and subtract the tare weight — the result is the weight of LPG remaining • A standard South African 9kg cylinder contains 9kg of LPG when full. A 19kg cylinder contains 19kg when full. • A cylinder with less than 15 to 20 percent of its rated gas weight remaining will produce lower than normal pressure — particularly in cool weather

Gas level indicators: • Mechanical magnetic gas level indicators clip onto the outside of the cylinder and provide a colour-coded indication of the gas level — these are inexpensive and available from most hardware stores • Electronic gas level indicators provide a more accurate digital reading of remaining gas

Signs that your cylinder is nearly empty: • Flame height reduces progressively during cooking — particularly noticeable when the flame drops during a pot of boiling water • Difficulty maintaining ignition — the gas pressure is insufficient to reliably light the burner • Flame goes out during cooking on a low setting — the low pressure cannot maintain the gas flow required for the thermocouple to hold the gas valve open at a low setting

Keep a spare cylinder available — and always have your supplier’s contact number readily accessible. In Durban’s load shedding environment a working gas stove with an empty cylinder during a power outage is no better than a broken electric stove.

5. Why does my gas stove flame go out during cooking on a low heat setting but stay lit on high?

A gas burner that stays lit on a high setting but extinguishes on a low setting has one of the following fault causes — and distinguishing between them requires assessing the specific circumstances:

Thermocouple fault — the most common cause. On a low heat setting the burner flame is smaller and less intense. A thermocouple that is producing marginally insufficient voltage may generate enough voltage to hold the gas valve open when the flame is at full intensity on high — but insufficient voltage when the flame is reduced to low. This is a classic presentation of a thermocouple that is nearing end of life — it fails on low before failing completely on high.

Low gas cylinder pressure — as the cylinder empties the gas pressure decreases. On a high setting there is sufficient pressure to maintain the thermocouple in the flame correctly. On a low setting the reduced gas pressure produces a smaller flame that may not fully contact the thermocouple tip — causing the thermocouple voltage to drop below the threshold for holding the gas valve open. Check cylinder weight before assuming a thermocouple fault.

Thermocouple positioning — the thermocouple tip must be positioned within the burner flame. On a high setting the larger flame reliably contacts the thermocouple tip. On a low setting the smaller flame may not reach the thermocouple tip if it is not correctly positioned — causing the thermocouple to cool and the gas valve to close. This fault often occurs after a burner service where the thermocouple was removed and not correctly repositioned.

Partially blocked burner holes — a burner with some blocked holes produces a weaker flame than intended at any given knob position. On a low setting the already-weak flame is insufficient to maintain thermocouple contact. Regular burner cleaning prevents this.

WhatsApp us on +27 79 976 2941 for a same-day assessment — our technicians carry thermocouples for all major brands and diagnose this fault accurately across Durban.

6. How do I safely store and handle LPG gas cylinders in my Durban home?

Correct LPG cylinder storage and handling is a safety requirement — not just a recommendation. South African gas safety regulations under SANS 10087 specify requirements for LPG cylinder storage in residential properties:

Storage location requirements: • Store LPG cylinders outdoors or in a well-ventilated location — never in a basement, enclosed garage, cupboard under stairs or any location where leaked gas can accumulate. LPG is heavier than air and sinks to the lowest point of an enclosed space where it can reach explosive concentrations. • Cylinders must be stored upright at all times — a cylinder stored on its side allows liquid LPG to flow into the regulator and supply line causing pressure surges and potential liquid LPG flow into the stove • Store cylinders away from heat sources — direct sunlight, braais, electrical equipment and any ignition source • The cylinder storage area must not be within 1 metre of a window or door opening into a habitable space

Cylinder handling: • Never drop, roll or knock cylinders — physical damage to the cylinder body or valve can cause leaks or catastrophic valve failure • Never expose cylinders to temperatures above 50 degrees Celsius — Durban’s summer sun on a metal surface can exceed this. Keep cylinders shaded. • Inspect the cylinder valve and regulator connection for physical damage before connecting a new cylinder • Always turn off the cylinder valve when the stove is not in use — particularly overnight and when leaving the property

Regulator and hose: • Replace the gas supply hose every 3 to 5 years regardless of visible condition — rubber hoses deteriorate internally before external cracking is visible • Inspect the hose for kinks, abrasion and cracking monthly — a damaged hose must be replaced immediately by a certified technician • Never use a hose that has been kinked — internal damage at the kink point is not always visible externally

Changing cylinders: • Turn off the cylinder valve before disconnecting the regulator • Ensure the stove is not in use when changing cylinders • After connecting the new cylinder turn the valve on slowly and check for gas smell at the regulator connection before using the stove • Apply soapy water to the regulator-cylinder connection to confirm gas tightness — bubbles indicate a leak that must be resolved before the stove is used

7. What is the SANS 10087 standard and how does it affect gas stove repairs in Durban?

SANS 10087 is the South African National Standard that governs all aspects of the handling, transportation, storage, installation and use of liquefied petroleum gas in portable, bulk and piped installations. It is the primary regulatory framework that certified gas technicians in South Africa must comply with on every gas appliance installation and repair.

How SANS 10087 affects gas stove repairs in your Durban home:

Person of competence requirement — SANS 10087 requires that all gas work on appliances and installations be carried out by or under the supervision of a person of competence — a technician who has demonstrated the required knowledge and skills for gas work through appropriate training and certification. A general appliance repair technician without gas certification is not a person of competence for gas stove repair purposes.

Certificate of compliance — SANS 10087 requires that a certificate of compliance be issued for gas installations and significant gas work. This certificate documents the work performed, the gas appliance details and the certification of the person who performed the work. The certificate is important for: • Home insurance validity — many insurers require that all gas work be certified under SANS 10087 as a condition of coverage for gas-related incidents • Property sale — a compliant gas installation certificate may be required during property transfer • Peace of mind — the certificate confirms the work was performed by a certified person to the required safety standard

Inspection and testing requirements — SANS 10087 specifies that gas work must be inspected and tested before being placed in service. Our post-repair safety testing protocol — electronic gas leak detection, soapy water testing and operational testing of all gas components — meets the inspection and testing requirements of SANS 10087.

Our certified technicians provide SANS 10087 compliant gas work on every gas stove repair across Durban — including the certificate of compliance where required. WhatsApp us on +27 79 976 2941.

8. Can a gas stove be repaired if the burner body is cracked?

A cracked burner body — the cast iron or brass component that forms the burner structure — is a fault that requires assessment before determining the repair approach:

Minor crack not involving gas flow passages — a surface crack or chip in the burner body that does not extend to any of the gas flow passages — the venturi tube, the gas supply channel or the burner holes — may allow continued safe use after the affected burner is thoroughly assessed by a certified technician. The crack must be monitored for propagation.

Crack involving gas flow passages — a crack that extends to any of the gas flow passages allows gas to escape from an uncontrolled point rather than through the designed burner holes. This is a safety hazard — the escaping gas can ignite at the crack point rather than at the burner surface — and the burner must not be used until the burner body is replaced.

Cracked burner body replacement — burner bodies for most major gas stove brands are available as spare parts and are replaced by our certified technicians across Durban. In some cases — particularly for older or discontinued models — the burner body may not be available as a separate spare part and the complete burner assembly may need to be replaced. Our technicians advise on parts availability and sourcing time at the time of the repair visit.

A cracked burner body should always be assessed by a certified gas technician — do not attempt to repair a cracked burner body with adhesive or sealant. Gas-rated repair materials exist for specific applications but their use requires certified technician assessment and must comply with SANS 10087. WhatsApp us on +27 79 976 2941.

9. How does Durban’s coastal humidity affect gas stove components and what maintenance does this require?

Durban’s coastal humidity creates specific gas stove maintenance requirements that are more demanding than in drier inland cities. The high relative humidity — combined with salt air in coastal suburbs — accelerates deterioration of specific gas stove components:

Igniter electrodes and ceramic insulators: • Moisture absorbed by the igniter ceramic in Durban’s humid climate increases the electrical conductivity of the ceramic surface — causing the igniter spark to track along the ceramic surface rather than jumping to the burner as a productive spark • This presents as an igniter that clicks but does not produce a visible spark at the burner — or produces a weak spark that fails to ignite the gas reliably • Regular drying of the igniter area and keeping the stove clean prevents moisture-related ignition problems. A hairdryer on a cool setting directed at the igniter area for 30 seconds often resolves moisture-induced ignition faults without requiring component replacement.

Control knob switches and igniter module: • In Durban’s coastal suburbs salt-laden humid air can penetrate the control panel area of gas stoves — causing corrosion of the igniter module switches and the electrical connections to the igniter electrodes • Corroded connections produce high resistance that reduces the spark energy available at the burner • Annual inspection and cleaning of igniter module connections is included in our gas stove service visits across Durban

Gas supply hose: • Durban’s UV radiation combined with humidity accelerates the surface degradation of rubber gas supply hoses — causing surface cracking and brittleness that precedes internal deterioration • Gas supply hoses in coastal Durban suburbs should be inspected every 6 months and replaced every 3 years — rather than the standard 5-year replacement interval recommended for inland cities • UV-resistant braided stainless steel hoses last longer than rubber hoses in Durban’s coastal environment and are recommended for properties in direct sun exposure

Thermocouple tips: • Salt air deposits on thermocouple tips accelerate the oxidation of the thermocouple junction — the precise point at which the thermoelectric voltage is generated • Oxidised thermocouple tips produce lower voltage output and have a shorter operational lifespan than equivalent thermocouples in drier environments • Annual cleaning and voltage output testing of all thermocouples is included in our gas stove service visits

Our recommendation for Durban coastal properties — annual gas stove service visits rather than the standard biennial recommendation for inland properties. The cost of an annual service is significantly less than the cost of emergency repairs caused by accelerated component deterioration in Durban’s coastal environment.

10. What should I do if my gas cylinder regulator freezes during use?

Frost or ice forming on a gas cylinder regulator or on the cylinder itself during use is a phenomenon known as LPG freezing — and while it looks alarming it is not a fault in the regulator but a consequence of the physics of LPG vaporisation:

Why it happens: When LPG vaporises from liquid to gas it absorbs heat from its surroundings — including from the cylinder walls and the regulator. When gas is being drawn from the cylinder at a high rate the heat absorption can be sufficient to cool the cylinder and regulator to below the dew point of the ambient air — causing atmospheric moisture to condense and freeze on the cold metal surfaces.

In Durban’s humid climate this phenomenon is more pronounced than in drier cities — because the higher moisture content of Durban air provides more moisture available to freeze on the cold cylinder and regulator surfaces.

Is it a problem? Mild frosting on a regulator during heavy use — running multiple burners at full heat simultaneously — is not a fault and resolves itself when gas demand reduces. Severe frosting that causes the regulator to freeze solid and restrict or stop gas flow is a problem:

Severe frosting causes and solutions: • Using an undersized cylinder for the demand — a 9kg cylinder supplying a six-burner stove at full heat may not vaporise gas fast enough, causing severe cooling and frosting. Use a larger cylinder or reduce simultaneous burner use. • Very cold ambient temperature — LPG vaporisation slows significantly in cold weather. Durban’s mild climate makes this rare but possible on cold winter mornings. • Cylinder nearly empty — a nearly empty cylinder has less liquid LPG surface area available for vaporisation — the remaining gas is drawn faster from the small remaining liquid volume causing more severe cooling.

What to do if your regulator is frozen solid: • Do not apply direct heat — a flame or hot water applied to a frozen regulator is dangerous • Reduce gas demand — turn off some burners to reduce the vaporisation rate • Wrap the cylinder in a warm damp cloth — not hot — to gently warm the cylinder surface and improve vaporisation without dangerous overheating • Allow the frost to melt naturally — once gas demand is reduced the frost typically melts within a few minutes

If your regulator freezes regularly during normal single-burner use this indicates a failing regulator rather than a demand-related issue. WhatsApp us on +27 79 976 2941 for a same-day regulator assessment across Durban.