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Boiler Swap vs. Combi Conversion: Understanding the Differences!

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Boiler Swap vs. Combi Conversion: Understanding the Differences!

When considering upgrading your heating system, you’ll encounter options like “boiler swap” and “system conversion to a combi boiler.” Both aim to enhance efficiency and functionality, but they diverge in approach and outcomes. Understanding these differences is crucial, especially in contexts like converting to mains pressure and eliminating the need for cold water tanks in the loft, while accommodating larger houses with unvented hot water cylinders like Gledhill or Megaflo. Let’s delve into the distinctions before consulting with our boiler specialists.

Hot Water Efficiency

Boiler Swap: Maintains the traditional setup with a separate hot water cylinder, ensuring a consistent supply of hot water for multiple taps and appliances simultaneously.

System Conversion to a Combi Boiler: Delivers hot water on demand, eliminating the need for a cylinder and providing mains pressure hot water throughout the home, ensuring consistent water pressure ideal for showers and baths.

Space Requirements

Convert to Combi: A combi boiler heats water on demand and does not require a separate hot water cylinder or cold water tanks in the loft. It saves space by providing mains pressured hot water without the need for additional storage tanks.

Convert to System Boiler and Unvented Hot Water Cylinder: This involves replacing the current system with a system boiler, which heats water for central heating and domestic hot water. Additionally, an unvented hot water cylinder is installed to store hot water. Unlike traditional vented cylinders, unvented cylinders are connected directly to the mains water supply, providing mains pressured hot water throughout the home. This option still includes a hot water cylinder, but eliminates the need for cold water tanks in the loft, saving space.

Installation Time

Boiler Swap: Involves straightforward replacement, typically completed within a day or two, resulting in minimal disruption.

System Conversion to a Combi Boiler: Requires extensive installation work, including removing existing components and reconfiguring the plumbing system. This may prolong the installation timeline and increase disruption.

Cost

A boiler swap typically involves replacing your existing boiler with a newer model of the same type, maintaining the traditional setup with a separate hot water cylinder. This option tends to be more straightforward and cost effective.

Conversely, a system conversion to a combi boiler involves removing the existing system boiler and hot water cylinder and installing a combi boiler to provide both heating and hot water on demand. Therefore, it can be more expensive upfront due to additional labour and materials.

Conclusion

When deciding between a boiler swap and a system conversion to a combi boiler, it’s crucial to consider your specific requirements. For larger houses, a system boiler combined with an unvented hot water cylinder such as Gledhill or Megaflo may be necessary. Consulting with our qualified heating engineers can ensure the chosen heating system meets your needs. Call us today for expert advice and boiler installation services.

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