Your hot water should always be reliable and comfortable. Unvented cylinders provide strong, steady pressure, so every tap and shower works perfectly. We make sure your cylinder stays safe and efficient, whether it needs a new installation, a repair or just routine maintenance.
From new cylinder installations to safety checks on existing systems, we ensure your unvented cylinder meets regulations and works at its best for your home.
Unvented hot water systems demand a lot of knowledge and certification. Here’s why customers across London trust our team:
We take care of the work carefully, explain what’s going on and make sure your home and system are safe and working perfectly.
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If an expansion vessel fails, it can cause problems like faulty valves, thermostat issues or poor installation, leading to uneven water flow, temperature changes, noisy operation and even safety risks.
Our service includes checking pressure settings, testing safety devices, replacing worn components and correcting performance issues. This thorough approach restores strong hot water delivery while reducing the risk of future breakdowns.
By addressing faults early and ensuring correct system balance, we help protect your cylinder, improve efficiency and maintain reliable hot water across your home.
By following a clear and structured process, we make sure everything is handled efficiently and professionally.
We inspect your unvented cylinder, safety controls and pipework to understand the issue.
Pressure levels, thermostats and valves are checked to pinpoint the exact cause.
We explain what’s needed in plain language, outlining options and costs clearly.
Our engineer completes the required work using approved parts and methods.
We confirm correct operation, pressure stability and compliance before leaving.
We aim to provide a service that’s easy to understand and hassle-free, working carefully and efficiently while ensuring the results are reliable and long-lasting for your home.
Hot water system maintenance should be straightforward, reliable and cost-effective. PMD Plumbers provides fair, upfront pricing for unvented cylinder installations, servicing and repairs across London.
Routine maintenance helps in improving reliability, protects safety components and operates cylinder systems efficiently for a longer period of time. Whether you need urgent repairs or are planning a system upgrade, we offer practical solutions that deliver long-term value.
Consistent hot water. Safe operation. Trusted performance. That’s what we deliver.
Friendly engineers, straightforward advice, and reliable service - all backed by our satisfaction guarantee.
From first installation to ongoing maintenance, PMD Plumbers keep your hot water running smoothly and stress-free.
Yes. Annual servicing is recommended to ensure safety devices function correctly and to prevent any faults.
Most repairs are completed within one hour, depending on access and the issue involved.
Yes. All work is carried out by G3-certified engineers, as required by UK regulations.
Yes. We install modern, efficient cylinders designed to improve performance and reliability.
Keeping your hot water system in good shape should be straightforward, reliable and make life easier for you.
Gas Safe registered engineers covering Harrow, London and surrounding areas. Free quotes, fair prices, 24/7 emergency cover.
Based in Harrow, PMD Plumbers serves homes and businesses in Harrow, Pinner, Wembley, Stanmore, Northwood, Ruislip, Watford and Bushey. Tell us your postcode and the work you need so we can confirm availability for your address.
Check our service areas and postcodes · Explore our plumbing and heating services · Contact our Harrow team