Why do I need a flue for my oil boiler?

Grant Vortex condensing boilers need to be connected to a flue to remove the combustion gasses.

Even if you are replacing your Grant boiler with a new version, you will require a new flue system too. It is not possible to connect to the old existing flue or liner, due to build up of debris, which could fall back into your new boiler and affect its performance.

EZ-Fit Flue range

Grant has a range of unique EZ-Fit Flues. These are available as low level, high level or vertical kits, for internal and external applications, and even as unique EZ-Flexi liner packs, designed to enable condensing boilers to utilise an existing chimney. It is also possible to convert existing low-level flues to high level after installation.

Apart from the benefits of so many options the Grant EZ-Fit flue systems ensure ‘pluming’ is kept well out of the way of any windows, air vent or doors and out of sight.

The flue terminal (end part of flue situated externally) should be positioned so as to avoid combustion gasses accumulating in stagnant pockets around, or entering inside the property. Care should also be taken that the plume from a condensing flue does not cause a nuisance.

Individually designed conventional flue systems for modular boiler installations

We offer a unique customised design service, where two or more boilers are connected in a modular form to a single conventional flue stack. This service includes the design and supply of flue headers and flue systems for condensing boiler installations and is available to merchants upon completion of a simple site survey form. Contact our technical department on: +44 (0)1380 736920 for further details.

Case Studies

Grant renewables installed in hostel for homeless

  The Battery Street Hostel for Signpost Housing is a 46-bed homeless hostel situated in the Stonehouse area of Plymouth, built to provide housing for some of the city’s most vulnerable people.  Completed in July 2011 and located just off Union Street, the building replaced the Ship Hostel, which didn’tRead More

Clean and Efficient – Spira gets the thumbs up in Hampshire

The pioneering Grant Spira range of biomass boilers are clean, efficient and easy to use, making them the perfect alternative to anyone looking to replace an older solid or fossil fuelled heating system. The Grant Spira is a fully automatic self-feeding and self-cleaning biomass boiler that performs much like anRead More

Living with a Grant Vecta biomass boiler

Grant UK visited Mike and Sarah Hodgson who recently had a Vecta wood pellet boiler installed at their property, to discuss why they chose this renewable technology and to uncover a homeowner’s perspective of living with biomass. At the beginning of 2017, Mike and Sarah Hodgson had an internal VectaRead More

Martin Roberts warms up with a Grant VortexBlue

Earlier this year, television and radio property expert and author, Martin Roberts, turned to Grant UK for a replacement oil boiler to fulfil his property’s heating needs. Martin selected a Grant VortexBlue which, with its cleaner burning technology, is now keeping his home warm and toasty for many years toRead More