Heat Pump Retrofits,Calculated End-to-End

Live room-by-room heat loss, an AI assistant that reads your EPCs and floor plans, auto-generated retrofit scenarios, emitter checks at low flow, and tariff modelling — all the way to an installer-ready report.

Features

Comprehensive calculations, simple to use

A room-by-room heat loss engine following the CIBSE Domestic Heating Design Guide and an AI assistant do the heavy lifting — you review and decide.

Benefits

Benefits for every role in the retrofit

One platform — clear value whether you're upgrading a home, designing, installing, specifying or teaching.

Homeowners

Understand & trust your retrofit

Understand & trust your retrofit
Compare running costs tariff by tariff
A clear report for any MCS contractor
See which upgrades save the most
Learn more

Landlords & Housing Associations

Standardise stock assessment

Consistent assessments across your portfolio
Evidence for upgrades and grants
Track install readiness per job
Clear reports for tenants and stakeholders
Learn more

Designers & Installers

Defensible designs, fit it right first time

Room-by-room heat loss that recalculates live
AI-parsed EPCs and floor plans
Emitter checks at low flow temperature
Install packs with full breakdowns
Auto-generated retrofit scenarios
Learn more

Research & Education

Teach and research with real calculations

Free access for educational institutions
Traceable, documented calculations
Heat loss visualisation for teaching
Explore what drives the answer
Learn more

Partner with us

Shape HeatLens, get more in return

We're inviting installers, industry experts, researchers & academic institutions, manufacturers and charities to give product feedback — in exchange for early access to new features, a fully functional Pro account for a year, direct access to our developer team and priority support for any issues or bugs.

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How It Works

Simple 4-Step Process

From lead to assessment to delivery

Lead

Capture the enquiry and upload EPC, floor plan and site photos

Assessment

AI-extracted rooms and live room-by-room heat loss

Proposal

Client-ready report with system design and running costs

Delivery

Install readiness, emitter checks and handover pack

Pricing

Ready to Transform Your Assessments?

Start free. Upgrade when you need more projects, installer-pack reports, or AI-generated reports.

MonthlyAnnualSave 10%

HeatLens Free

Single-project workspace for individual assessment use.

Free
  • Live room-by-room heat loss
  • AI EPC & document parsing
  • Emitter suitability at low flow
  • Auto retrofit scenarios
  • Heat pump & tariff modelling
  • 1 active project

HeatLens Basic

Multi-project management for individual professionals.

£30/mo

or £324/yr annually

Everything in Free, plus:

  • 100 active projects
  • Professional installer-pack reports
  • 30-day trial (10 projects)

HeatLens Pro

Unlimited projects, advanced reporting, and AI report generation.

£50/mo

or £540/yr annually

Everything in Basic, plus:

  • Unlimited active projects
  • AI report generation (100/mo)
  • Priority support

Enterprise

For housing providers, councils and large-scale retrofit programmes.

On application

Volume & multi-year pricing tailored to you

Everything in Pro, plus:

  • Bespoke data connections & bulk uploads (property lists, surveys)
  • Custom dashboards & project trackers for scaled retrofit roll-outs
  • Direct line to our developer team with agreed SLAs for bug fixes
  • Direct input on feature roadmap prioritisation

No credit card required for free tier · 30-day trial on paid plans

© 2026 HeatLens. For UK professionals.

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