QuoteGuardian Knowledge Centre
Understand the quotation before you sign it.
Independent, practical guidance for comparing household energy and home-improvement proposals, challenging assumptions and protecting your position.
Start here
Start here
How QuoteGuardian assessments work
See how confirmed facts, calculations, assumptions and evidence become a transparent screening result.
Transparent rules
Assessment methodology
Review the current scoring categories, benchmarks, thresholds and limitations.
Guides and policies
Solar buyer guide
Understanding Solar Quotations
How to read a UK solar-panel quotation and identify missing specifications, assumptions and protections.
Battery buyer checklist
Battery Quotation Checklist
A practical UK checklist for comparing home-battery quotations, usable capacity, warranties and operating assumptions.
Low-carbon heating
Heat-Pump Quotation Checklist
What a UK household heat-pump quotation should state about heat loss, emitters, controls, performance and price.
Boiler replacement
Boiler Quotation Checklist
Compare UK boiler quotations using scope, controls, warranties, system preparation and payment protection.
Warranty clarity
Workmanship and Product Warranties Explained
Understand the difference between product, performance and installer workmanship warranties.
Payment control
Deposits and Payment Protection
How to approach deposits, staged payments and evidence before paying a UK home-improvement installer.
Before you sign
Questions to Ask an Installer
A practical list of questions to ask before signing a solar, battery, heat-pump or boiler quotation.
Example report
Example Anonymised QuoteGuardian Report
See how an anonymised QuoteGuardian quotation assessment presents scores, evidence and questions.
QuoteGuardian FAQ
Frequently Asked Questions
Answers about QuoteGuardian uploads, assessment scores, privacy, accounts and installer checks.
Accountability
Complaints and Corrections Policy
How QuoteGuardian receives, investigates and corrects complaints, errors and disputed assessment information.
Independence
Editorial and Independence Policy
How QuoteGuardian separates evidence, editorial judgement, commercial relationships and specialist-site links.
Specialist context
One decision, several useful perspectives
Household energy
PowerGuardian
Guidance, calculators and practical information for UK energy consumers.
Market context
EnergySector
UK energy-market developments, policy and industry intelligence.
AI & infrastructure
AI Energy Intelligence
Research into AI energy demand, data centres and intelligent infrastructure.
Security
CyberEngland
Practical insight into cyber security and connected-energy risks.