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371 guides across 20 house files. Each one opens with an energy record: the file and stage, the question it answers, the evidence level and the first check. Page 2 of 10, guides 42 to 82.
File 03 - Home energy audits Audits for Older Homes Why audits for older and traditional homes need different care: solid walls, lime, timber, heritage constraints, and defaults that misdescribe traditional construction. File 03 - Home energy audits Audits for Solar Homes How audits differ for homes with solar panels: generation, self-use, export, storage, and how solar interacts with heating, hot water and overall performance. File 03 - Home energy audits Audits for Ventilation Systems How an audit examines natural, extract and mechanical ventilation, airflow, humidity and indoor air, and what findings should change a retrofit plan. File 07 - Solar panels and storage Battery Storage Basics How home batteries store solar electricity, what capacity and power mean, and how cycling, location and backup options affect the choice. Educational only, not advice for a particular home. File 06 - Heating and heat pumps Biomass Heating, in General How biomass heating works with wood pellets, chips or logs, and what fuel supply, storage, air quality and maintenance questions it raises. Educational only, not advice for a particular home. File 06 - Heating and heat pumps Boiler Efficiency, Explained What boiler efficiency figures mean, why a condensing boiler only condenses under the right conditions, and how controls and servicing affect real performance. Educational only, not advice for a particular home. File 11 - Building energy modelling Building Energy Modelling, Explained A plain-language introduction to building energy modelling: what a model calculates, what it leaves out, and how to read its results without treating them as a promise about one home. File 18 - Energy performance by home type Bungalows and Energy Energy patterns in bungalows: a large roof over a single storey, accessible fabric, and heating across one level. Educational guidance only, not advice for a specific home. File 19 - Landlords, buyers, sellers and tenants Buying a Home: An Energy Checklist An energy checklist for buyers: certificate, fabric, heating, ventilation and evidence, in the order that prevents expensive surprises. Educational guidance only, not legal advice. File 04 - Reading your energy rating Carbon Dioxide on a Certificate What the carbon dioxide figure on a certificate means, how it is calculated from fuel and energy, and why it moves differently from energy and cost. File 05 - Insulation and fabric first Cavity Wall Insulation How cavity wall insulation works, which walls are suitable, how it is installed, and the damp and exposure checks that must come first. File 15 - Assessors, certificates and evidence Certificate Errors and Corrections How certificate errors arise, how to spot them, and how to get a certificate corrected through the assessor and the scheme. File 15 - Assessors, certificates and evidence Certificate Evidence to Keep Which documents to keep alongside a certificate, why each one matters, and how a complete evidence file saves time at sale, letting or retrofit. File 20 - Checks, mistakes and maintenance Certificate Mistakes The mistakes that spoil certificates: outdated documents, wrong inputs, and recommendations read as promises. Educational guidance only, not advice for a specific home. File 15 - Assessors, certificates and evidence Certificate Retention Periods How long certificates and assessment records should be kept, by whom, and why retention matters for transactions, compliance and future work. File 15 - Assessors, certificates and evidence Certificate Translation and Accessibility How certificates can be made accessible to people who need translation, large print, or other formats, and what the limits of translated certificates are. File 15 - Assessors, certificates and evidence Certificates and Building Records How certificates fit into wider building records, from logbooks and maintenance files to sale packs, and how to keep a record that outlasts ownership changes. File 15 - Assessors, certificates and evidence Certificates and Mortgage Lenders, in General How mortgage lenders use energy certificates in general, what they do and do not do with ratings, and what borrowers should understand. File 15 - Assessors, certificates and evidence Certificates and Planning Documents How energy certificates relate to planning documents, what each document proves, and why neither substitutes for the other. File 15 - Assessors, certificates and evidence Certificates for Commercial-to-Residential Conversion What happens to certificates when a commercial building becomes homes, what new assessments are needed, and what pitfalls to check. File 15 - Assessors, certificates and evidence Certificates for Sales and Lettings When certificates are needed for a sale or a letting, what must be provided and when, and how buyers and tenants should use them. File 20 - Checks, mistakes and maintenance Checks, Mistakes and Maintenance The ongoing side of home energy: annual checks, post-retrofit verification, common mistakes and a maintenance rhythm that protects performance. Educational guidance only, not advice for a specific home. File 15 - Assessors, certificates and evidence Choosing an Assessor How to choose an energy assessor for a transaction, a letting standard or a retrofit baseline, and how to brief them so the output matches the need. File 11 - Building energy modelling Choosing Modelling Support How to choose a modeller or energy adviser, what to ask before engaging them, and how to judge whether their work is careful or merely confident. File 01 - Home energy performance foundations Comfort, Health and Energy How warmth, draughts, damp and air quality affect comfort and health in general terms, and why energy work should be judged on lived conditions as well as ratings. File 20 - Checks, mistakes and maintenance Common Retrofit Mistakes The recurring retrofit mistakes across measures, and the planning habits that prevent each one. Educational guidance only, not advice for a specific home. File 04 - Reading your energy rating Comparing Two Homes by Rating How to compare two homes fairly using ratings, scores, features and context, without being misled by bands, dates or different methods. File 08 - Windows, doors and ventilation Condensation and Ventilation Why condensation forms, how to tell surface condensation from other damp, and what ventilation, heating and insulation changes help. Educational only, not advice for a particular home. File 16 - Installers and professionals Contracts and Scope Checks What a home energy contract should state, and the scope checks to run before signing or paying a deposit. Educational guidance only, not legal advice. File 17 - Costs, payback and finance Cost Mistakes to Avoid The recurring money mistakes in home energy work, and the simple checks that prevent each one. Educational guidance only, not financial advice. File 17 - Costs, payback and finance Cost of Phased vs Single-Stage Work How phasing retrofit work changes its cost, compared with doing it in one stage. Educational guidance only, not advice for a specific home. File 17 - Costs, payback and finance Costs, Payback and Finance, Explained The whole money picture for home energy work: what quotes include, how payback is calculated, and how finance and grants fit, without promised savings. Educational guidance only, not financial advice. File 18 - Energy performance by home type Detached Homes and Energy Energy patterns in detached homes: full exposure, larger fabric areas and heating systems sized for a bigger envelope. Educational guidance only, not advice for a specific home. File 06 - Heating and heat pumps District Heating, Explained How district heating supplies heat from a shared network, what a heat interface unit does, and what questions matter before connecting. Educational only, not advice for a particular home. File 08 - Windows, doors and ventilation Doors and Thermal Bridges How doors lose heat and create thermal bridges at thresholds, frames and letterboxes, and what detailing reduces those losses. Educational only, not advice for a particular home. File 08 - Windows, doors and ventilation Double Glazing, Explained How double glazing works: two panes, a sealed gap, coatings and gas fill, and what determines whether it is a good upgrade for a particular window. Educational only, not advice for a particular home. File 08 - Windows, doors and ventilation Draught-Proofing Doors and Windows How draught-proofing works for doors and windows, which seals suit which opening type, and when draught-proofing must be paired with ventilation. Educational only, not advice for a particular home. File 05 - Insulation and fabric first Draught-Proofing With Insulation How draught-proofing and insulation work together, which gaps to seal, which ventilation to keep, and how to sequence the two so comfort improves without moisture problems. File 18 - Energy performance by home type Duplex Homes and Energy Energy patterns in duplex homes: two-level apartments with house-like heating and flat-like sharing. Educational guidance only, not advice for a specific home. File 06 - Heating and heat pumps Electric Heating, Explained How electric heating works: direct heaters, storage heaters, electric boilers and heat pumps compared, and where direct electric heat makes sense. Educational only, not advice for a particular home. File 18 - Energy performance by home type End-Terrace Homes and Energy Energy patterns in end-terrace homes: a terrace with an extra exposed side, and why it behaves like a semi. Educational guidance only, not advice for a specific home.