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
Track install readiness per job
Clear reports for tenants and stakeholders
Learn more

Designers & Installers

Defensible designs

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 working closely with a small group of installers, designers, manufacturers, researchers and charities before full launch. Partners get early access to new features, 90 days of HeatLens Pro, and a direct line to our developers. After the 90 days you choose whether to carry on, and we will confirm the price and terms before anything is charged.

How it works

Four simple steps

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

Plans and pricing

Start free. Upgrade when you need more projects, customer invoices and customer links, or AI-generated reports.

MonthlyAnnual10% off when billed annually

HeatLens Free

Single-project workspace for individual assessment use.

Free
  • Live room-by-room heat loss
  • AI EPC and document parsing
  • Emitter suitability at low flow
  • Auto-generated retrofit scenarios
  • Heat pump and tariff modelling
  • 1 active project
  • Up to 25 open leads

Customer invoices and customer links are on paid plans only.

HeatLens Basic

Multi-project management for individual professionals.

£30/month

or £324/year, billed annually

Everything in Free, plus:

  • 100 active projects
  • No cap on open leads
  • Customer invoices and customer links

HeatLens Pro

Unlimited projects, advanced reporting, and AI report generation.

£50/month

or £540/year, billed annually

Everything in Basic, plus:

  • Unlimited active projects
  • AI report generation (100 a month)
  • 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 these by agreement with us:

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

No credit card required for the Free plan. HeatLens is not VAT registered, so no VAT is added.

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