Choose Your Level of Support
From early-stage feasibility through to on-site commissioning, we deliver precision engineering at every stage. All backed by Flexitest Ltd's 15-year compliance track record.
Feasibility Study
The Entry Point
Desktop review and budget estimation from your plans. Perfect for early-stage planning.
- Desktop review & budget estimation from plans
- Technology suitability review (ASHP, PV, Battery)
- Compliance feasibility check (Part L & Future Homes)
- 30-minute video consultation with David Richards
- Written summary report with recommendations
- Budget breakdown for all major components
Technical Design Pack
The Standard
Full technical specification for installers. Everything needed for competitive quotes and Building Control.
- Room-by-room heat loss calculations (BS EN 12831)
- PV array design & shading analysis
- Single-line electrical schematic (3-Phase optimised)
- DNO G99 application support & documentation
- Part L compliance documentation package
- Battery sizing with load profile matching
- EV charger integration strategy
- Bill of Materials with manufacturer part numbers
- Installer briefing pack with Q&A support
Project Oversight
The Premium
End-to-end technical assurance from design through to handover. Backed by 15 years of compliance testing.
- On-site commissioning witness & verification
- System performance validation testing
- Contractor technical queries & liaison
- Building Control coordination & sign-off
- Full client handover training & documentation
- Post-installation optimisation support
- Thermal imaging & diagnostics
- As-built documentation & compliance certificates
- 12-month system performance review
Still have questions about which package is right for your project?
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The Cost of Fragmentation: Why Separate Designs are a £1,500 Mistake
Avoid the 'Silo Effect' where trades clash and efficiency is lost. We provide a unified engineering strategy for a single, integrated price.
Traditional self-builds require sourcing five different specialists. We eliminate that friction by providing all calculations, schematics, and compliance under one roof.
| Individual Service (Sourced Elsewhere) | Market Average | The Integravolt Advantage (£995 Offer) |
|---|---|---|
| Room-by-Room Heat Loss (MCS) | £450 | Included (Optimised for MVHR) |
| MVHR Design & Part F Spec | £350 | Included (Flexivent Engineering) |
| Solar & 3-Phase EV Strategy | £350 | Included (Load-Balanced Schematic) |
| Agile Automation Logic Design | £600 | Included (Home Assistant/MQTT) |
| VAT & Compliance Strategy | £250 | Included (Notice 708/6 Specialist) |
| TOTAL ESTIMATED COST | £2,000+ | £995SAVE OVER 50% |
Total Project Value Unlocked
Our designs pay for themselves before you even start the build.
(on a £30k tech stack)
All designs are overseen by David Richards and backed by the engineering heritage of Flexitest Ltd (Company No. 07344798). MVHR designs powered by Flexivent, our specialist ventilation partner.
Why Fixed-Fee Consultancy?
Most energy consultancies earn commission from equipment suppliers. We don't. This means our recommendations are based on engineering merit, not margin.
Zero Conflicts
We don't sell equipment, install systems, or receive referral fees. Every recommendation serves your project, not our bottom line.
Vendor-Neutral
Our Technical Design Packs work with any installer. Get competitive quotes based on identical specifications.
Fixed Scope
No hourly billing surprises. Pay for the deliverable, not the time. Every tier has a defined output.
David Richards
Every Integravolt project is personally led by David Richards, with 15 years of electrical compliance experience through Flexitest Ltd (Company No. 07344798). NICEIC accredited, MCS certified, and trusted by 14 UK Building Control authorities.
You're not buying a template. You're getting precision engineering backed by 2,000+ electrical safety inspections, solar commissioning tests, and Part F certifications.
Ready to Start Your Project?
Book a Feasibility Study today and save 50% during our introductory launch offer. Same-day response guaranteed.
Flexitest Ltd (Company No. 07344798) | NICEIC Accredited | MCS Certified