HVAKR vs Endra
Endra is a well-funded AI startup automating MEP documentation inside Revit — but it has only signaled that HVAC is coming. There are no HVAC load calculations and no HVAC design in the product today. HVAKR does HVAC now: AI reads your floor plans, you run ASHRAE/ACCA load calcs, size equipment, and ship reports — backed by real mechanical engineers.
Head-to-head
Where HVAKR Wins
Real HVAC Depth
No HVAC Calculations. No HVAC Design. Just a Roadmap.
Endra markets an AI vision across six MEP disciplines, but the only module shipping today is fire-alarm design — it publishes no HVAC load-calc methodology, no equipment or duct sizing, and no HVAC design. It has signaled it’s building for MEP; it doesn’t do mechanical engineering yet. HVAKR is purpose-built for HVAC and does the whole loop right now: AI floor-plan takeoff, ASHRAE/ACCA load calculations, equipment sizing, duct design, and branded reports.
- Load calcs, sizing, ducts, and reports — built in
- Purpose-built for HVAC, not a six-discipline roadmap
- No waiting for an HVAC module to ship
No Revit Required
A Standalone Tool, Not a Revit Add-On
Endra is natively integrated with Revit — its add-in, family libraries, and deliverables are built around an Autodesk BIM toolchain. HVAKR is self-contained: you work entirely in the browser, from floor plan to load calc to report, with no Revit license and no BIM model required.
- No Revit or Autodesk license needed
- Start from a PDF floor plan, not a BIM model
- Everything in one browser-based tool
HVAKR AI
AI Built for Load Calcs, Not Just BIM Placement
Both tools use AI — for different jobs. Endra’s AI reads drawings to place devices and systems into a BIM model. HVAKR’s AI reads PDF floor plans and extracts the spaces, areas, and boundaries that drive ASHRAE/ACCA load calculations — then the engineer reviews and controls every number.
- AI space takeoff feeds your load calcs
- Engineer reviews and approves every change
- From floor plan to sized system in one flow
Built for Your Firm
Self-Serve for Small and Mid-Size Teams
Endra sells through enterprise, request-access deals aimed at the largest consultancies. HVAKR is self-serve: sign up, start a project, and run real load calcs the same day — priced per seat for small-to-mid MEP firms.
- Sign up and start — no enterprise contract
- Per-seat pricing with a free trial
- Built for small-to-mid MEP firms
Mechanical Engineers On Tap
HVAKR is more than software. Every plan includes support from mechanical engineers who design HVAC for a living — so when a hard load-calc or system-selection question comes up, you get an answer from someone who has solved it before. Where other tools offer software support, HVAKR offers engineering support.
Talk to a real engineer
Stuck on a load calculation, a system selection, or a tricky space? Our mechanical engineers help with the actual engineering — not just which button to press.
Answers in hours, not days
Fast, human product support and onboarding that gets your whole team productive in a day.
Expertise included
Mechanical engineering help comes with your subscription — no consulting contract and no extra fee.
Start designing HVAC today
No Revit, no enterprise sales cycle, no roadmap to wait on. Most teams run their first project in HVAKR the same day they sign up.
- 1
Start a free trial
Sign up in your browser and create your first project — no Revit license, no IT ticket.
- 2
Upload a floor plan
Let HVAKR AI take off spaces from your PDF plans to drive the load calcs.
- 3
Run loads and ship reports
Calculate loads, size equipment, design ducts, and export branded PDF and CSV reports.
Frequently asked questions
Does Endra do HVAC load calculations or design?
Not today. Endra has signaled it is building across MEP disciplines, but its only shipping module is fire-alarm design — it publishes no HVAC load-calc methodology, no equipment or duct sizing, and no HVAC design. HVAKR performs ANSI/ASHRAE/ACCA Standard 183 and ASHRAE 62.1 HVAC load calculations, equipment sizing, and duct design today.
Do I need Revit to use HVAKR?
No. HVAKR is a standalone, browser-based tool that works directly from PDF floor plans. Endra is natively integrated with Revit and its workflow is built around an Autodesk BIM toolchain; HVAKR needs neither a Revit license nor a BIM model.
Are HVAKR’s load calculations standards-compliant?
Yes. HVAKR follows ANSI/ASHRAE/ACCA Standard 183 and ASHRAE 62.1 methodology, and the calculation engine is backed by third-party audits.
Can a small or mid-size firm use HVAKR?
Yes — that’s who it’s built for. HVAKR is self-serve with per-seat pricing and a free trial, so you can start the same day. Endra’s go-to-market is enterprise, request-access deals aimed at large consultancies.
Both tools use AI — what’s the difference?
Endra’s AI reads drawings to place devices and systems into a BIM model. HVAKR’s AI reads PDF floor plans and extracts the spaces that drive HVAC load calculations, with the engineer reviewing and approving every change.
What does HVAKR cost?
HVAKR is a per-seat subscription with a free trial. See our pricing page for current plans.
Design HVAC today — no Revit, no waiting
Start a free trial and run real ASHRAE/ACCA load calcs the same day: standalone, browser-based, AI floor-plan takeoff.