Hot water running out or
need better pressure?

Cotswold Plumbers specialise in the installation of Unvented Cylinders
which can improve your homes hot water system

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Recommended by 100% of our customers

Hot Water Systems

At Cotswold Plumbers, we understand the importance of a reliable hot water supply for your home. Whether you’re running a relaxing bath, powering multiple showers, or using taps in different rooms at once, your system needs to deliver—quickly and consistently.

We specialise in the installation, servicing, and repair of unvented hot water cylinders, including industry-leading brands like Megaflo by Heatrae Sadia and PremierPlus. These modern systems offer high performance, energy efficiency, and excellent water pressure throughout your home.

Cotswold Plumbers are Megaflo accredited to give you peace of mind to ensure your hot water cylinder has been installed and serviced to the highest standard.

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Cotswold Plumbers

Unvented Cylinder
Servicing & Repairs

Unvented systems operate under high pressure and must be maintained properly to ensure they stay safe, efficient, and compliant with current regulations. Our experienced engineers are fully qualified to carry out:
  • Annual servicing to maintain performance and warranty cover
  • Pressure and safety valve checks
  • Expansion vessel inspection and recharge
  • Replacement of faulty immersion heaters or thermostats
  • Diagnosing and fixing loss of pressure, leaks, or inconsistent hot water supply
Cotswold Plumbers

Benefits of
installing an
Unvented
Cylinder

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High Pressure, Mains- Fed
Hot Water

Enjoy powerful, consistent water pressure throughout your home, ideal for multi-bathroom properties and large families.

Fast-Filling Baths &
Invigorating Showers

No more waiting—fill your bath quickly and enjoy a strong, refreshing shower thanks to the direct mains pressure supply.

Balanced Water
Supply

Annual maintenance helps identify small issues before they become major faults, reducing the risk of unexpected breakdowns and keeping your heating running reliably.

Space-Saving
Design

Servicing your boiler once a year helps maintain its performance, extend its lifespan, and ensure you stay within the terms of your boiler warranty and manufacturer’s guarantee.

Energy Efficient
Performance

Many manufacturers terms and conditions are that in order to keep your boiler guarantee becoming void you must have your boiler serviced annually.

We are Megaflo
Accredited Installers

Cotswold Plumbers
Megaflo is the powerhouse behind high-performance hot water systems—delivering invigorating showers, quick-filling baths, and a reliable supply to every tap in your home. As one of the UK’s most trusted brands, Megaflo Eco cylinders lead the way with innovative design, durable construction, and outstanding energy efficiency. Perfect for busy homes, these cylinders ensure high levels of comfort without compromising performance. Looking for value without sacrificing quality? We also offer PremierPlus unvented cylinders, which deliver reliable hot water at an affordable price point.
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Our frequently asked Hot Water System questions

Find answers below to our frequently asked questions of feel free to get in touch

It’s a mains-fed hot water storage system that delivers high-pressure water to all taps, showers, and baths—no need for a loft tank.

You’ll get powerful water pressure, quicker filling baths, balanced flow to multiple outlets, and better energy efficiency.

Yes—annual servicing keeps the system safe, efficient, and ensures your manufacturer’s warranty remains valid.

We work with top brands like Megaflo and PremierPlus, known for performance, reliability, and energy efficiency.

In most cases, yes. We’ll assess your setup to confirm compatibility and recommend the best upgrade options.

These are signs something’s wrong. Call us to diagnose and fix the issue before it gets worse.