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No Hot Water But the Heating Still Works? Here’s Why

If your radiators are warming up fine but nothing comes out of the taps except cold water, the fault almost always sits with one specific part rather than the whole system. It’s a strange one to diagnose from the outside, because the boiler is clearly firing and clearly working, which throws a lot of homeowners off. We see this a fair bit on jobs across Southampton and Winchester, and it’s rarely as serious as it first feels. Here’s what’s actually going on, and what you can safely check yourself before calling an engineer out.   Why This Happens: The Short Answer Most combi boilers use a single component, called a diverter valve, to switch between heating your radiators and heating your hot water. When that valve gets stuck, worn, or jammed in the “heating” position, the boiler keeps warming your radiators perfectly while sending nothing to the hot water side. Everything else in the system can be completely healthy, which is exactly why this fault confuses people. If you’ve got a system boiler with a separate hot water cylinder, the cause is usually different again, more often an immersion heater fault, a faulty cylinder thermostat, or a stuck motorised valve

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Do Landlords Need a Gas Safety Check?

Yes, if you’re a landlord in England or Wales, you must arrange an annual gas safety check on every gas appliance and flue in your rental property. It’s not optional, and it’s not something you can put off until a tenant complains. The law is clear on this, and so are the consequences of getting it wrong. We carry out landlord gas safety checks across Hampshire, from Southampton and Winchester through to Romsey, Eastleigh, Chandlers Ford and Whiteley, so this is a question we get asked a lot, usually by newer landlords who’ve inherited a property or just bought their first buy-to-let. Here’s what the law actually requires, in plain English.   What Is a Landlord Gas Safety Record (CP12)? A Landlord Gas Safety Record, often still called a CP12 (that’s the old form number, but the name has stuck), is the certificate you get once a Gas Safe registered engineer has checked every gas appliance, pipe and flue in the property. It confirms the appliances are safe to use. Nothing more, nothing less. It isn’t a boiler service, although many landlords sensibly book the two together to save on callout time.   How Often Do Landlords Need a Gas

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Worcester Greenstar 4000 Boiler Installation

Looking for a reliable, efficient new boiler from one of the UK’s most trusted manufacturers? The Worcester Bosch Greenstar 4000 is a dependable, high quality condensing boiler built to keep your home warm and your hot water flowing. At LW Gas Ltd, our Worcester Bosch Diamond Accredited Installers provide professional Greenstar 4000 boiler installations across Southampton, Eastleigh, Chandler’s Ford, Winchester and surrounding Hampshire areas.   Why Choose A Worcester Greenstar 4000 Boiler? The Worcester Bosch Greenstar 4000 combines modern efficiency, quiet operation and dependable everyday performance in a compact, stylish design. Designed for small to medium-sized homes, it offers the reliability Worcester Bosch is known for alongside smart heating compatibility and excellent energy efficiency. Reliable Performance For Everyday Homes The Greenstar 4000 is designed to provide consistent, dependable heating and hot water for a wide variety of properties across Hampshire. It is well suited to smaller family homes, flats, terraced properties and semi-detached houses where a reliable everyday boiler is needed. Even during colder months and periods of higher demand, the Greenstar 4000 delivers reliable heating and hot water performance throughout the home. Straightforward Controls and Compact Design The Greenstar 4000 features a clear, easy to use interface and a

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Air Conditioning Repair Costs Explained: What to Expect

If you’re looking into air conditioning services in Southampton, one of the first questions that comes up is usually about cost. It might be a system that’s blowing warm air in the middle of a heatwave, or a unit in your shop making a worrying rattle just as footfall picks up. Whatever the issue, understanding typical repair costs helps you budget properly and avoid nasty surprises. In this guide, we’ll break down common faults, give realistic price ranges and explain what really affects what you’ll pay.   Common air conditioning faults and their repair costs Air con systems are generally reliable, especially modern wall-mounted splits and cassette units we see across homes and businesses in Southampton. But like anything mechanical, things do wear out. Low refrigerant or gas leaks If your system is running but not cooling properly, low refrigerant is a common culprit. This can happen due to a small leak in pipework or flare joints. Typical repair costs can range from around £150 to £500 or more, depending on: How easy it is to access the leak The type of refrigerant used How much gas needs topping up Whether pipework repairs are needed It is worth saying that

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How Long Does AC Installation Take? A Quick Guide

If you’re thinking about air conditioning installation, one of the first questions you’ll probably ask is simple: how long is this going to take? It’s a fair question. Whether you’re a homeowner planning around work and school runs, or a small business owner trying to avoid disruption, knowing what to expect makes life a lot easier. The honest answer is that it depends on the type of system and the property, but in most cases it’s quicker and less disruptive than people think. Here’s a straightforward guide to help you understand typical timeframes, what can affect them and how to make the process as smooth as possible. Typical AC Installation Timelines Explained For most homes and small commercial spaces, a standard wall mounted split system can usually be installed in one day. A straightforward installation in a typical Winchester or Southampton semi might take around 4 to 6 hours. That includes mounting the indoor unit, installing the outdoor condenser, running pipework and electrics and fully testing the system. If you’re having more than one indoor unit fitted, for example in a couple of bedrooms and a living room, it will normally take longer. A multi split system could take a

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How Often Should AC Be Serviced for Best Performance?

If you’ve invested in air conditioning, whether at home or in your shop or office, it makes sense to look after it properly. Regular air conditioning services keep your system efficient, reliable and cheaper to run over time. One of the questions we’re asked all the time is simple: how often should AC be serviced? The short answer is at least once a year. But there’s a bit more to it than that. It depends on how you use your system, where it’s installed and how hard it has to work during the year. Why Regular Air Conditioning Servicing Matters Air conditioning systems are often out of sight and out of mind. They sit high on the wall or on a flat roof quietly doing their job. But inside, there are filters, coils and electrical components that need checking and cleaning. Without servicing, dust builds up on filters, which restricts airflow. Coils get dirty, which reduces cooling performance. Small refrigerant issues can go unnoticed until the system starts blowing warm air in the middle of a heatwave when you need it most. We’ve seen plenty of cases across Winchester and Southampton where a simple annual service could have prevented a

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Can air con be installed in a home office?

If you’ve ever tried to concentrate on a video call while your small box room feels like a greenhouse, you’ll know how quickly heat can ruin a working day. More people across Hampshire are asking about air conditioning for their home office, and the short answer is yes, just like it can be installed in your bedroom, it absolutely can be installed in most properties. Whether you’re in a modern estate in Chandlers Ford or a Victorian terrace in Winchester, there are practical options that don’t involve turning your house upside down. It’s less about whether it can be done and more about choosing the right setup for your space and how you actually use it. Why air conditioning matters for home offices Working from home sounds ideal until you realise the spare room was never designed for eight hours of screens, body heat and closed doors. A lot of home offices are the smallest room in the house. They often have one window, poor airflow and lots of equipment humming away. Heat builds up quickly, especially in south facing rooms. We regularly hear from people in Southampton who say their upstairs office becomes unbearable by early afternoon. The fan

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Smart Controls for Air Conditioning: Save Energy & Stay Comfortable

If you already have air conditioning or are thinking about installing it, smart controls can make a bigger difference than most people realise. It is not just about turning the system on and off from your phone. Done properly, smart controls for air conditioning can help you cut running costs, smooth out temperature swings and make day to day life that bit easier. We get asked about WiFi thermostats more and more across Winchester, Southampton and Romsey. Homeowners want better control. Landlords and property managers want lower bills and fewer complaints about rooms being too hot in summer or chilly first thing in the morning. The good news is that modern systems are designed with this flexibility in mind. How Smart Air Conditioning Controls Work At its simplest, a smart control connects your air conditioning system to your home WiFi. Instead of relying on a basic wall controller, you can adjust temperatures, timings and modes from an app on your phone or tablet. Most WiFi thermostats allow you to: Change the temperature remotely Set daily and weekly schedules Monitor energy use Switch between heating and cooling modes Control individual zones in multi-room systems For example, if you leave the house

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How Often Should AC Be Serviced for Best Performance?

If you’ve invested in air conditioning, whether at home or for your business, you’ll naturally want it to run smoothly all year round. One of the most common questions we get from customers looking for air conditioning services in Romsey or the surrounding areas in Hampshire is simple: how often should it actually be serviced? The honest answer depends a little on how you use it, but there are clear guidelines that help most homeowners and small business owners keep their systems running efficiently without unnecessary expense. Why Regular Air Conditioning Servicing Matters Air conditioning systems work harder than most people realise. Even in the UK, where we tend to think of AC as a summer luxury, many modern units are used for heating in winter too. That means compressors, fans and filters are running for a large part of the year. Without regular servicing, small issues build up. Filters clog. Coils collect dust. Refrigerant levels drop slightly. None of these problems shout for attention straight away, but over time they reduce efficiency and increase running costs. We often attend properties in Winchester and Southampton where the system “just doesn’t feel as cold as it used to”. In many cases,

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Boiler Fault Codes Explained: What Warning Lights Mean

If you’ve glanced at your boiler and spotted a flashing light or a strange code on the display, you’re not alone. We speak to homeowners across Southampton every week who say the same thing: “It was working fine yesterday, and now it’s showing F22. What does that even mean?” If you’re looking for Southampton boiler repairs, understanding what those boiler fault codes actually mean is a good place to start. Modern boilers are clever bits of kit. Instead of just stopping and leaving you guessing, they try to tell you what’s wrong. The trouble is, most of us aren’t fluent in boiler language. In this guide, we’ll break it down in plain English so you can decide what’s a quick fix and what needs a Gas Safe engineer. Why Boilers Show Fault Codes Older boilers relied more on simple lights. If something failed, you might just get a red light and no heating. Newer models from brands like Vaillant, Worcester and Ideal have built-in diagnostics. They monitor water pressure, ignition, fan speed, temperature sensors and more. If something falls outside of the normal range, the boiler shuts down safely and displays a code. That code points towards the problem area.

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