What is a coal effect gas fire and how does it work?

angela • 24 February 2025

A coal effect gas fire is a modern heating appliance designed to look like a traditional coal-burning fireplace. It gives the cosy appearance of real burning coals but runs on gas instead of solid fuel. These fires offer the charm of a classic fireplace with the convenience of gas heating.

How does coal effect gas fire work?

A coal effect gas fire uses gas burners and ceramic or artificial coals to create a realistic flame effect. Here’s how it works:

Gas supply – The fire is connected to a gas line or a bottled gas source (LPG).
Ignition system – When turned on, the fire ignites using a manual switch, remote control, or automatic ignition system.
Flame simulation – Gas flows through burners hidden beneath ceramic coals. When lit, the flames rise through these coals, making them glow like real burning coal.
Heat output – The fire produces heat, which warms the room. Some models also have fans to distribute heat more efficiently.
Ventilation – Depending on the model, the fire may use a chimney, flue, or balanced venting to remove waste gases safely. Some advanced models are flueless and use a catalytic converter to clean emissions.

Types of coal effect gas fires

There are different types of coal effect gas fires based on ventilation needs:

Open-flame gas fires – These require a chimney or flue to vent gases outside.
Glass-fronted gas fires – These are sealed with a glass panel, making them more efficient and reducing heat loss.
Flueless gas fires – These do not need a chimney. They use a catalytic converter to clean the gases before releasing them into the room.

Benefits of a coal effect gas fire

Realistic look – It mimics the charm of a traditional coal fire.
Convenient – No need to store coal or clean ashes.
Energy efficient – Modern models offer great heat output with low fuel consumption.
Safe – Advanced safety features prevent gas leaks and overheating.
Easy to use – Can be controlled with a switch or remote.

A coal effect gas fire is a great way to enjoy the warmth and beauty of a traditional fireplace without the hassle of solid fuel. It offers style, efficiency, and ease of use, making it a perfect choice for modern homes.

Are you looking for a company that stocks and supplies coal effect gas fires? Look no further than Pure Stoves and Fireplaces. Contact us today to find out more about our products.

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What size wood burner do I need?

by angela • 27 May 2026

Choosing the right size wood burner is one of the most important decisions you will make before installation. Go too small and you will be cold. Go too large and you risk wasting fuel, blackened glass, and a stove that never quite performs the way it should. This guide answers the most common questions homeowners ask when working out what size wood burner they need, so you can make a confident decision before you buy. How do I calculate what size wood burner I need? The standard calculation used across the industry is straightforward. Measure your room in metres, multiply the length by the width by the height to get the volume in cubic metres, then divide that figure by 14. The result gives you a good starting point for the kilowatt (kW) output you need. So for a room that is 5m long, 4m wide and 2.5m high: 5 x 4 x 2.5 = 50m³ divided by 14 = approximately 3.6kW That figure assumes average insulation and double glazing, which covers the majority of homes in the UK. If your property is older with poor insulation, single glazing, or significant draughts, divide by 10 instead. If you live in a new build with high-spec insulation and triple glazing, divide by 25. These adjustments reflect how much heat your room actually retains rather than what the bare volume suggests. Are kilowatt ratings on wood burners accurate? This is where many buyers get confused, and it is worth understanding before you shop. The kW figure quoted by a manufacturer is known as the nominal heat output. In the UK, manufacturers are largely free to set that figure themselves, provided a tester can confirm it is achievable with a reasonable fuel load. The problem is that "reasonable" is open to interpretation, which means two stoves both labelled as 5kW can have very different firebox sizes. A manufacturer may deliberately rate a stove at 5kW rather than a higher figure for practical reasons. Under UK building regulations, stoves with a nominal output of 5kW or below are often exempt from requiring a dedicated air vent in the room. That is a genuine selling point for many customers, so it creates an incentive to keep the rated output at or below that threshold. The honest conclusion is this: treat the kW figure as a guide, not a guarantee. Two stoves with the same rating can perform very differently in practice. What should I actually look at when comparing stove sizes? Once you have a rough kW figure in mind, the most reliable way to compare stoves is to look at the physical size of the firebox. The firebox is the internal combustion chamber where the wood burns. A larger firebox holds more fuel and can produce more heat over a longer period. When you visit a showroom, ask yourself how many logs the stove can reasonably hold without the door becoming difficult to close or logs rolling around. That physical capacity is a far more honest indicator of performance than the number printed on the specification sheet. At Pure Stoves and Fireplaces, our team will always walk you through firebox dimensions alongside kW ratings so you have a complete picture before making a decision. What if my calculation suggests I only need a 3kW or 4kW stove? A smaller output figure does not automatically mean you should buy the smallest stove available. If a 3kW or 4kW stove looks too compact for your space or would require you to cut logs down to a very small size, it is perfectly reasonable to step up to a 5kW model. A common concern is that buying a larger stove will make the room uncomfortably hot. In practice, the heat output of any stove is determined by how much wood you burn at any given time. A 5kW stove burning a small, well-controlled load will produce 2 or 3kW of heat, not the maximum output. You are always in control of the fire. The rated output simply tells you what the stove is capable of at full capacity. The only real downside to buying a stove that is slightly too large for the room is that you may end up with a large floor area inside the firebox where logs struggle to stay together. That is a minor inconvenience rather than a performance issue. What you genuinely want to avoid is buying a stove that is too small. A stove running flat out just to keep up with the room will wear faster, burn through fuel quickly, and still leave you cold on the worst winter days. Can Pure Stoves and Fireplaces help me work out the right size? Absolutely. Our team works with homeowners across Hertfordshire and the surrounding areas to find the right stove for the room, the property, and the budget. We stock a wide range of models across all output sizes and can walk you through dimensions, efficiency ratings, and installation requirements in our showroom. Whether you are looking for a compact 3kW stove for a smaller sitting room or a larger model to heat an open-plan kitchen and living space, we can help you find something that works. Contact us today to arrange a consultation or visit us in store.