See how HeatLoss Pro beats Heatpunk, MCS Excel toolkits, and €3,000/year legacy desktop software. Calculate room-by-room heat loss in under 5 minutes, pay just €1.00 per job, and generate client-ready engineering reports.
vs 60–90 mins in spreadsheets or traditional desktop CAD
vs €1,500 – €4,000/yr annual seat licenses
No distributor bias, specify any heat pump model
Traditional heat loss workflows force you to manually measure wall dimensions, look up U-values in paper books, or fight with clunky 3D CAD engines. HeatLoss Pro was engineered from the ground up for lightning-quick execution.
Have a floor plan from an architect or real estate listing? Simply take a screenshot, press Ctrl+V to paste directly onto the canvas, calibrate one known dimension, and trace rooms immediately. No multi-step file uploads or CAD conversions.
Drag rectangles or click custom L-shaped/angled room vertices. Our CAD engine automatically calculates wall perimeters, ceiling area, internal vs. external wall exposure, and party wall boundaries in the background while you draw.
Every time you adjust a wall dimension, change insulation from solid brick to cavity with PIR, or add a radiator, the total house kW and specific W/m² update instantly. Zero progress spinners and zero wait times.
Why should an installer or energy consultant pay €2,500/year to a corporate software giant just to size a residential heat pump? We built HeatLoss Pro with true democratic pricing.
Draw offline in your browser; it syncs when you're online.
Plus mandatory training fees & support retainers.
Funded by hardware distribution margins.
Tied to expensive training courses and network fees.
Speed and low price mean nothing if the physics are incorrect. HeatLoss Pro implements rigorous European and British standards with low-temperature heat pump realism.
Heat pumps run at a tight ΔT 5°C flow-return split (e.g. 45/40°C or 35/30°C) for maximum COP. Delivering heat with a 5°C delta requires ~3–4× higher water flow rates than a gas boiler, demanding properly sized large pipework. HeatLoss Pro sizes hydronic flow and rescales radiator catalogs for low water temps using BS EN 442 correction curves.
Model underfloor heating with precision: screed thickness, pipe center spacing (100mm, 150mm, 200mm), and floor coverings (tiles, wood, carpet with tog rating).
Interactive temperature curve sweep displays heat loss across the entire heating season from -15°C to +15°C to pinpoint the exact bivalent balance point.
Room-by-room fabric and ventilation heat loss following the EN 12831 approach, using the design outdoor temperature you set.
Compare HeatLoss Pro directly with the four main alternative solutions on the market today.
| Feature / Capability |
HeatLoss Pro
Winner
|
Heat Geek App | Heatpunk (Midsummer) | MCS Excel Sheets | Enterprise CAD (MagiCAD) |
|---|---|---|---|---|---|
| Pricing & Value | |||||
| Starting Price |
Free Canvas • €1.00 / Report
|
£350 – £1,500+ (Course / network) | "Free" (Equipment sales) | Free / Cheap template | €2,500 – €4,000 / year |
| Unlimited Monthly Pro |
€29.99 / month (Cancel anytime)
|
Network fee (£40-£100+/mo) | N/A (Tied to merchant) | N/A | €250+ / month / seat |
| Manufacturer Neutrality | 100% Neutral (Any brand) | Tied to Heat Geek network models | Tied to distributor inventory | Neutral (Manual input) | Neutral |
| Data Privacy & Local Storage | |||||
| Local Canvas Storage (Draw Safely Offline) |
Works offline, syncs to your account. Calculations run on our server
|
Cloud-dependent (Projects on remote server) | Cloud-dependent (Merchant servers) | Local offline spreadsheet | Local desktop file (Cloud license) |
| Workflow & Speed | |||||
| Average House Calculation Time |
3 to 5 minutes
|
20 to 30 minutes | 30 to 45 minutes | 60 to 90 minutes | 2 to 4 hours |
| Ctrl+V Blueprint Paste & Tracing | Direct Clipboard Paste | No (Manual room dimensions) | File upload required | No (Manual tape measure) | Complex DXF/DWG import |
| Live Real-time Math Feedback | Instant 60 FPS update | Step-by-step submission | Page recalculate lag | Spreadsheet recalculate | Manual simulation run |
| Calculation Depth & Standards | |||||
| Calculation method |
Room-by-room, based on EN 12831 (simplified)
|
Yes | Yes | Yes (If formulas correct) | Full Standard |
| Low-Temp Radiators & ΔT5 High-Flow Sizing | Automatic exponent scaling | Yes | Yes | Manual formula lookup | Yes |
| Underfloor Heating Circuit Modeling | Screed & Tog resistance | Yes | Yes | Usually separate sheet | Yes (Requires setup) |
| Temperature Sweep Curve Chart | Interactive -15°C to +15°C | Tabular views | Static tables | Manual chart creation | Yes |
| Platform & Requirements | |||||
| Installation Required |
0 MB (100% In-Browser)
|
0 MB (Web) | 0 MB (Web) | Requires Microsoft Excel | 5GB+ Heavy Windows Install |
| Device Compatibility |
Mac, PC, iPad, Tablet, Phone
|
Browser / Mobile | Desktop browser preferred | Desktop with Excel | Windows PC with GPU only |
| Instant PDF Client Reports | Clean, One-Click Export | Heat Geek branded PDF | PDF with Midsummer branding | Ugly spreadsheet print | Detailed CAD printout |
Consider an active heating engineer or installer completing 40 residential heat pump surveys per year:
Spent on enterprise CAD seat licenses or multiple subscription tools.
Wasted on manual data entry, dimension typing, and spreadsheet debugging.
Cash kept in your business plus 56+ hours returned to install pumps.
Join hundreds of modern HVAC engineers, heat pump installers, and energy assessors. No software download, no credit card required to start drawing.
Instant browser access • Save & share with unique links • €1.00 pay-as-you-go reports