CAD for HVAC installers
Duct runs, heat-pump layouts, refrigerant lines, ventilation schematics. €197 lifetime, no MEP subscription.
Diaz Editor: 3D + 2D CAD for self-employed HVAC, ventilation and heat-pump installers worldwide. Sketch the building, route the supply and extract air, drop in heat pumps, indoor and outdoor units, air-handling units and diffusers, then generate the install drawing + bill of materials + DXF for the next trade. €197 lifetime. No subscription, no cloud, no Autodesk account.
HVAC & ventilation use cases
- Heat-pump installs: Position the outdoor unit and indoor units, route the refrigerant line-set and condensate drain, generate the install drawing + parts list for the wholesaler.
- Ventilation & MVHR: Draw supply and extract duct runs per floor, place the heat-recovery unit and diffusers, label each branch with diameter and airflow.
- Air-conditioning & split systems: Lay out single-split, multi-split or VRF indoor units, route line-sets back to the condenser, keep it clean for the quote.
- Duct & plant-room layouts: Route rectangular and round ducts with fittings, position the air-handling unit, export a clean DXF for the building contractor.
- Hybrid & renovation work: Combine a new heat pump with the existing radiator or underfloor network in one drawing for the client quote.
- Permit & quotation drawings: Generate the duct-plan + per-discipline schematic PDF for the permit pack, or a clean 3D view to win the job against a Word-doc quote.
Why HVAC installers choose Diaz Editor
- One-time €197 vs an AutoCAD MEP or Revit subscription built for office BIM teams.
- Real duct and pipe (leiding) objects with diameter and material — supply air, extract air, refrigerant and condensate each on their own layer.
- Component library covers heat pumps, indoor and outdoor units, air-handling units, diffusers, valves and manifolds out of the box.
- Per-discipline bill of materials — air, refrigerant, heating and electrical tallied separately for the wholesaler.
- DXF export round-trips cleanly with AutoCAD, BricsCAD and FreeCAD shops downstream.
- Local-only — client install data stays on your machine, no cloud account, no Autodesk audit.
Honest scope: Diaz Editor draws layouts, schematics and parts lists. It is not a heat-loss, duct-sizing or psychrometric calculation engine — load calculations and code sign-off stay your professional responsibility.
Compare in detail: vs AutoCAD LT · vs FreeCAD.
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Frequently asked questions
What CAD do self-employed HVAC installers actually use?
AutoCAD MEP and Revit MEP are the big names — expensive and built for whole-building BIM teams. HVAC suites like MagiCAD, Stabicad and DDS-CAD add duct- and load-sizing calculations but are office-priced subscriptions. Most solo installers fall back to hand-sketching or a generic 2D tool with no duct library. Diaz Editor fills the affordable mid-tier with real duct objects and one-time pricing.
Can I draw duct runs and heat-pump layouts?
Yes. The 2D module has duct and pipe (leiding) objects with diameter and material, plus heat pumps, indoor and outdoor units, air-handling units, diffusers and valves in the library. Draw supply, extract and refrigerant on their own layers, label them, export DXF or PDF. It draws and lists — it does not replace a heat-loss or duct-sizing engine, so sign-off stays with you.
Does it handle ventilation, refrigerant and electrical too?
Yes. The utility/GWW object set covers supply air, extract air, refrigerant, condensate, heating and electrical, each on its own discipline layer with its own material list. Export a clean separated DXF per discipline for the next trade.
Is it overkill for a single split-unit or heat-pump swap?
No. Sketch the room in minutes, drop in the indoor and outdoor units, route the refrigerant line-set and condensate, generate an install drawing plus a parts list for the wholesaler and a PDF for the client. Beats a hand sketch and is far quicker than a full BIM suite.
Try Diaz Editor — €197 lifetime
€197 one-time. Built for HVAC and ventilation installers. Ducts, heat pumps and parts lists in one tool.
Get the licence — €197For other trades
Wat je krijgt voor €197
Eenmalig. Levenslang. 3 seats. Geen abonnement.
- Diaz Editor Pro — levenslange licentie voor je hele werkdag
- 3 seats — jij + je voorman + je werkvoorbereider ✓
- Alle disciplines in één tool — bouw, timmer, elektra, sanitair, mechanisch, solar 4 tools uitgespaard
- DXF-export — werkt met elke architect, aannemer of installateur Inbegrepen
- 1-klik PDF export — offerte, werktekening en stuklijst in één pakket Inbegrepen
- Kanaal-, warmtepomp- en ventilatie-objecten met materiaal + diameter Inbegrepen
- Alle toekomstige updates — v0.4, v0.5, v0.6... Inbegrepen
- Feedbackformulier dat direct bij de ontwikkelaar aankomt Inbegrepen
Gemaakt voor zelfstandigen + kleine teams (1-10 personen). Niet voor architecten of utility-scale engineering — daar zijn AutoCAD en Aurora beter in.
Introductieprijs — gaat omhoog bij v0.5:
€197 vandaag
Stripe checkout. Direct download na betaling.