Underfloor heatingand heat lossfor your client.
Upload a client's plan. Algo AI reads the rooms. The engine calculates heat loss to EN 12831-1 and lays the loops. You send the PDF.
Subscription: every module - heat loss, underfloor heating, heat pump sizing, heat recovery ventilation - with no project limit.
- Free account forever
- No credit card
- No installation
On your phone? Sign up now and do the design on your computer later.
Check it yourself
- 4.38 kWa reference house calculated in full, every input public Check it →
- EN 12831-1 + EN 1264room-by-room heat loss and the underfloor loops, calculated to these standards
- over 90installers have a HeatAlgo account
Your filesfor the client.
Real files from an example house - the same ones you download for your client.
- Building and room heat loss to EN 12831-1
- Loops, manifold, flow rates and a flow meter table to EN 1264
- The scaled plan and a materials list with the coil cutting plan
- A report number and your logo
Sample files
An example house, real files from the app - the same as yours.
Todayvs with HeatAlgo.
Three ways to do the same underfloor heating design for a client.
- Installation
- Desktop software
- Windows, a licence
- Wholesaler's design desk
- -
- HeatAlgo
- the browser
- Client data
- Desktop software
- you retype it
- Wholesaler's design desk
- you send it by e-mail
- HeatAlgo
- the client fills in a link on their phone
- Loops and manifold
- Desktop software
- you draw them
- Wholesaler's design desk
- you wait a few days
- HeatAlgo
- the engine lays them, you adjust
- Materials list
- Desktop software
- separately
- Wholesaler's design desk
- it depends
- HeatAlgo
- from the design, with a cutting plan
- Your logo on the report
- Desktop software
- it depends
- Wholesaler's design desk
- no
- HeatAlgo
- yes
From the plan to the PDFin 3 steps.
One project carries the plan, the rooms' heat loss and the loops - nothing is typed twice.
PDF, image, DWG or DXF. Algo AI reads the rooms, doors and windows and takes the scale from the plan's dimensions; it asks only when the plan has none.
The engine lays the loops, places the manifold and routes the runs. You edit any of it; loop lengths, spacing, flow rates and floor output per EN 1264 update as you go, beside each room's heat loss per EN 12831-1.
A report with the scaled plan and a flow meter table per manifold, and a bill of materials with the coil cutting plan - both with your logo once the project is unlocked.
No more chasingdata by phone.
You send the client a link. They fill it in on their phone - no account, no installation. Dimensions, building elements and windows land in the project before you call.
See the client form →Plans
Regular work or a single job?
For regular work, take a subscription: every module and unlimited reports. For a single job, buy the report for one project. Calculating is free, with a preview of the results. You unlock the full results and the PDF report with a purchase.
Doing 2 reports a month or more - the subscription costs less than buying them one by one.
Every subscription has all four modules - no bundles, no paid add-ons. On every plan: Algo AI and the AI-assisted client form. On the paid ones: a report number and your branding.
Prices include VAT - also when you buy from outside Poland, where the tax for your country is already in the price. You pay in the currency you pick beside the price - zloty, euro or US dollars.
Prices valid from 18 October 2026.
Selling heat pumpsor underfloor heating?
Show your client where the heat pump size comes from. In HeatAlgo you calculate heat loss room by room to EN 12831-1, on the client's own floor plan, then get a preliminary heat pump sizing and the underfloor heating loops. Your client gets a PDF report they can check - and you get an argument a quote sized from floor area does not have.
- Attach the report to every quote - the subscription has no project limit.
- Put “design and sizing included” on your quote.
- €35 a month incl. VAT, every module. Start with a free account.
Sample files
An example house, real files from the app - the same as yours.
For 33 years I calculated all of this more slowly. Now the client's data comes in by itself, and I have the heat loss calculation and the underfloor heating done in one afternoon.
Jarosławinstaller with 33 years of experience, co-creator of HeatAlgoInstallers' questions.
No. HeatAlgo runs in the browser, with no installation and no single-computer licence. You can sign up on your phone and do the design on a computer.
Guidesfor installers.
See all posts →Design your first house free.
Upload a plan, check the loops the engine lays and see the heat loss room by room. You unlock the full results and the PDF report with a purchase.
No payment card. Your projects and data stay in your account.
Rather see it on your own project? Book 15 minutes