Pure Energy ProjectElectrical · Heating · Plumbing07825 268 434 Knowledge for better projects
Practical answers for London homeowners, designers and contractors planning electrical, plumbing and heating work.
Written to answer a real planning or diagnostic question.
Renovation · Coordinated installations
Coordinate plumbing, heating and electrics before first fix: layouts, water demand, plant space, access, responsibilities and the decisions to agree before walls and floors are closed.
14 min read · Published 28 October 2026
Read: Plumbing, Heating and Electrics for a London Renovation
Electrical · Fault finding
Understand RCD and RCBO trips, safe homeowner checks, weather and appliance patterns, and what a professional investigation should establish.
13 min read · Published 5 October 2026
Read: RCD Keeps Tripping? A London Homeowner’s Guide to Causes and Safe Checks
Hot water · Maintenance
Understand annual checks, expansion vessels, safety discharge, servicing costs and the difference between routine maintenance and fault diagnosis.
14 min read · Published 5 October 2026
Read: Unvented Hot Water Cylinder Servicing for London Homes
Heating · Troubleshooting
Understand hidden leaks, expansion vessel faults and discharge. Learn which observations are safe, why repeated topping up is not a repair, and what a proper investigation should establish.
12 min read · Published 5 October 2026
Read: Why Does My Boiler Keep Losing Pressure
Heating · Troubleshooting
Understand cold zones, no flow and thermostat faults. Compare safe first checks for wet and electric systems, and what a proper assessment should cover.
15 min read · Published 5 October 2026
Read: Underfloor Heating Not Working? A Troubleshooting Guide for London Homes
Electrical · In-depth guide
Plan layers of light, LED strips, dimming and practical controls — from improvements in a finished flat to the first-fix decisions in a full renovation.
16 min read · Published 4 October 2026
Read: Home Lighting Design for London Renovations
Plumbing & property protection · In-depth guide
Compare leak sensors, flow monitoring and automatic shut-off — including the limits around filters, boosters, stored water and heating circuits.
16 min read · Published 4 October 2026
Read: Water Leak Protection for London Homes
Plumbing & water treatment · In-depth guide
Compare carbon filtration, reverse osmosis, storage, remineralisation and optional ionisers — with practical installation and maintenance advice.
15 min read · Published 4 October 2026
Read: Water Filtration for London Homes: Reverse Osmosis, Minerals and Hydrogen Water
Electrical & renovation · In-depth guide
Plan lighting, ventilation, heating and equipment supplies together before your bathroom renovation reaches the tiling stage.
16 min read · Published 3 October 2026
Read the bathroom electrics guide →
Electrical & renovation · In-depth guide
Plan appliance supplies, sockets, island routes, layered lighting and installation stages before the kitchen is fitted.
15 min read · Published 3 October 2026
Read: Kitchen Electrics for a London Renovation
Underfloor heating & renovation · In-depth guide
Compare installation methods, complete project costs, finished floor heights and the practical choices for London houses, flats and renovations.
16 min read · Published 3 October 2026
Read: Retrofitting Underfloor Heating in an Existing Home
Electrical & refurbishment · In-depth guide
Compare targeted repairs, consumer unit replacement, partial rewiring and a full rewire — with practical advice on assessment, cost, disruption and certification.
19 min read · Published 2 October 2026
Read: Consumer Unit Replacement or Full Rewire? A London Homeowner’s Guide
Heating & system design · In-depth guide
Understand boiler modulation, weather compensation and BUS communication — and how radiators, UFH and several manifolds can work as one coordinated system.
26 min read · Published 2 October 2026
Read: Smart Heating Controls for London Homes
Plumbing & water treatment · Planning guide
Less limescale starts with the right specification. Compare system types, installation and running costs, cabinet space, flow and drinking-water arrangements.
15 min read · Published 1 October 2026
Read: Water Softeners for London Homes: Costs, Installation and Choosing the Right System
Plumbing & water pressure · Diagnostic guide
Start with the symptoms. Understand pressure and flow, make safe observations, and find out whether the next step belongs with a plumber, building manager or water supplier.
15 min read · Published 1 October 2026
Read: Low Water Pressure in London Homes: Causes, Checks and the Right Fix
Plumbing & water pressure · Planning guide
From compact pumps to whole-house systems: understand pressure, flow, accumulators, storage, hot-water compatibility and the checks that come before installation.
19 min read · Published 30 September 2026
Read: Water Pressure Boosters for London Homes: From Compact Pumps to Whole-House Systems
Plumbing & hot water · Planning guide
What happens to the loft tanks? Can you keep the boiler? Understand mains pressure, cylinder sizing, safety and the complete installation before deciding.
17 min read · Published 30 September 2026
Read: Vented to Unvented Hot Water Conversion: A London Homeowner’s Guide
Heating & boilers · Planning guide
Can you remove the cylinder and loft tanks? Understand the suitability checks, hot-water limits, installation stages and decisions before work starts.
14 min read · Published 28 September 2026
Read: Conventional to Combi Boiler Conversion
Heating & boilers · Decision guide
Cold radiators, cleaning methods and the checks that show whether powerflushing, balancing or a repair is the right next step.
12 min read · Updated 5 October 2026
Read: When a London Heating System Needs a PowerflushReal decisions
Useful before work beginsEach guide resolves a practical choice, risk or preparation question around a planned project.
Technical review
Checked by the PEP teamTechnical statements are reviewed against current practice and authoritative sources where rules are involved.
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Services in contextRelevant PEP services are linked where they help the reader act on the information.
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