The Ultimate Guide to Boiler Maintenance:
The Ultimate Guide to Boiler Maintenance: Keep Your...
Fast, reliable heating support in Twickenham — boiler repairs, annual boiler servicing and central heating fixes by qualified engineers. Annual gas boiler servicing is recommended and should be done by a Gas Safe registered engineer.
At Gassed Heating, we’re passionate about keeping your home warm and your water flowing. Founded in 2015, our family-run business has grown into one of London’s most trusted plumbing and heating services.
At our core, we are committed to delivering exceptional service in every aspect of our work. Quality workmanship is our foundation—we take pride in meticulous attention to detail, using the best materials and techniques to ensure lasting results. Fair pricing is a cornerstone of our values, as we believe in transparency and honesty, offering competitive rates without compromising on excellence.
Boiler problems often show up at the worst time. If your system is locking out, making unusual noises, losing pressure, or you’ve got no heat or hot water, it’s best to arrange a professional repair before the issue gets worse.
Common boiler faults include:
Boiler won’t ignite or keeps switching off
Hot water works but heating doesn’t (or the other way around)
Pressure dropping or needing frequent top-ups
Banging, kettling, or whistling noises
Leaks from the boiler or visible dripping pipework
Faulty thermostat, programmer, diverter valve, pump or sensors
A proper repair starts with safe checks and fault-finding, then a clear explanation of what’s wrong and what it will take to fix it.
A boiler works hard every day, so it makes sense to keep it checked. Energy Saving Trust recommends getting an annual gas boiler service from a Gas Safe registered engineer, and explains what to expect from a service.
Benefits of annual servicing:
Helps reduce breakdown risk during cold months
Keeps the boiler running safely and efficiently
Identifies small issues before they become big repairs
Supports long-term reliability (and may help with warranty conditions, depending on your manufacturer)
Typical service checks may include:
Visual inspection for leaks, corrosion or damage
Safety and performance checks
Checking key components and controls
Cleaning/inspection where appropriate for your boiler type
Sometimes the boiler is fine, but the heating system isn’t working properly. This is common in older properties and systems that haven’t had regular maintenance.
We can help with:
Radiators not heating evenly (cold spots, balancing, bleeding)
Thermostatic radiator valves (TRVs) replacement
Circulation issues (pump faults, airlocks, blocked pipework)
Zone valves / motorised valves faults
Thermostat and heating controls problems
Leaking valves, joints or pipework linked to the heating system
If your heating is slow, noisy, or only certain rooms warm up, it usually needs diagnosis rather than guesswork.
If you’re a landlord, letting agent, or manage rental property, you have legal responsibilities for gas safety. HSE guidance explains landlords’ duties around maintenance and gas safety checks. HSE+1
Landlord services typically include:
Annual gas safety checks (where required)
Safety records / certificates for your tenancy documents
Maintenance support for boilers, flues and gas appliances
Advice on booking schedules and access planning
Note: A gas safety check must be carried out by the right qualified person, and it is not acceptable to “sign off” gas work completed by someone who is not registered.
If your boiler is old, unreliable, or too expensive to keep repairing, a replacement can improve comfort and reduce wasted energy. In England, heating upgrades also link into Building Regulations guidance for energy performance (Approved Document L).
A good installation process usually includes:
Assessing your property size and hot water demand
Advising on the right boiler type (combi, system, regular)
Checking radiator condition and pipework suitability
Improving heating controls for better comfort and efficiency
Providing compliance paperwork guidance (where applicable)
Choosing a local heating engineer can make a real difference when you need support quickly:
Faster response for heating and hot water issues
Familiarity with local property types and common system layouts
Easier follow-up visits if parts are required
Clear communication and reliable aftercare
Contact our friendly team to discuss your needs. We’ll listen carefully, provide expert advice, and schedule a visit at your earliest convenience.
Our punctual, uniformed engineers will arrive on time, introduce themselves, and respect your home with cleanliness and professionalism.
We conduct a thorough assessment to diagnose the issue, explain the problem in simple terms, and provide transparent solutions with no-obligation quotes.
Once approved, we begin work efficiently using high-quality tools and parts, keeping you informed at every step for complete peace of mind.
The Ultimate Guide to Boiler Maintenance: Keep Your...
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