New Build Project Llanfair Caereinion

Project Type

Oil Boiler, Oil Tank, Plumbing & Heating and Bathroom Installation

Work Duration

3 Months


Llanfair Caereinion, Powys

Contacted directly by the client through a recommendation, this new build project in Llanfair Caereinon was an exciting venture for us to take on.

As part of the new build design, the owner wanted us to create, design and install all of the plumbing and heating elements throughout the property. This involved our consultation and input from the very first design stages, to create an effective and energy-efficient system that fit into the architectural design plans.

Initial Planning Consultation

The first Plumbing and Heating Planning Consultation we completed revolved around understanding and assessing the needs and wants of the client for the newly built property.

This included looking through design drawings to understand the planned layout of the new build. Identifying key information such as the location of the bathrooms and kitchen and creating a heating system that would best suit the new build homes’ design.

We also discussed the requirements of the client, taking into account the number of rooms in the home, before completing a heat loss calculation to measure the size of the boiler required.

Oil Tank and Boiler System

Due to the remote location of this property away from existing gas infrastructure, the clear option was to include an oil tank and oil boiler system to provide heat and hot water.

To save space within the property, it was decided to fit an external oil boiler. After a heat loss calculation, we calculated that we would need around 19KW to sufficiently supply the home. Therefore we selected a high-efficiency, low emissions 20KW Oil Boiler which could also be run on biofuels.

A forward-thinking decision for the long term, at the moment HVO fuel is around 20% more expensive and not readily available; however, in a few years, this will be a more sustainable and affordable fuel. It is estimated that switching fuel types from kerosene to HVO biofuels can reduce oil boiler emissions by 90%.

To feed the oil boiler, we fitted a 1200-Litre Deco Bunded Oil Tank, with extra high filtration oil filters to allow cleaner fuel to be burnt and save fuel pumps from any damage.

Underfloor and Central Heating System

To provide this new build with an effective yet energy-efficient heating system, it was decided to split create two different solutions for each level. On the ground floor, an Underfloor Heating Solution was selected to provide an even and quick heat distribution. Alternatively, on the upper floor, convection radiators with thermostatic valves were selected to provide increased control over the heat distribution in each room and the opportunity to switch off radiators in unused rooms to reduce energy consumption.

The underfloor heating was designed in-house by ourselves and laid according to the manufacturer’s design instructions with 150mm pipe centres. All underfloor heating pipe was multi-layer composite pipe (MLCP), which consists of multiple layers of polythene and a central core of aluminium.

We selected this underfloor heating solution for the oxygen barrier design feature that is built-in into the pipe. This stops oxygen ingress into the system which in turn will damage and block pipework from sludge. Additional advantages of this pipe include its incredible strength, corrosion resistance and its ease of installation.

As mentioned, the upstairs heating is run via convection radiators with thermostatic valves on every radiator, all sized correctly for each room. The towel rails all have matching coloured angled valves with an electric element in each. To further the energy efficiency of the home, these towel rails are connected to the PV panels fitted on the roof, which will use solar energy to heat the radiator and dry the towels for free in the summer months.

Hot Water System and Pipework

The hot water system for this new build includes a fitted unvented 250L Gledhill Professional boiler, with the addition of an extra 20mm of insulation on top of the standard 50mm. To further its cost-efficiency the bottom immersion, like the towel radiators, will be connected to the PV panels and powered by solar power, with the top immersion available to provide the boost function if necessary.

To connect the system we planned and laid all of the pipework ourselves using the design drawings and working alongside the builders throughout each of the different construction phases.

Continuing on the theme of making this property very energy-efficient and minimising any heat loss, all pipework for the bathrooms, kitchen and utilities is pre-insulated MLC pipe with Armacell self-sealing insulation. In addition, all fittings are of metal construction and are pressed onto the pipe with our press tool, which presses and makes a secure connection with an impressive 3 tonnes of force. Finally, all waste pipework was completed in a glued solvent weld pipe.

Cost and Energy-Efficient New Build Home

Designing and installing an entire plumbing and heating system in a new-build property is both challenging and rewarding. From ensuring that the system design will have sufficient capacity to maximising the energy efficiency to save the client in the long-term on their utility bills; each part of the system design provides opportunities.

Including each of the different energy-saving components we have included within the system, we estimate a usage of 1200L of kerosene annually. If you estimate Kerosene at 50p per litre that means a rough cost of £600 per year for heating and hot water which is an outstanding price for a new build property of this size.

A Large New Build Plumbing and Heating Project that has an extensive timeline, this project is still ongoing, so final photos will be added once the project has been fully completed.

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