HVAC Takeoff Software

A Handoff AI (H1) Alternative for HVAC and Ductwork Takeoff

Handoff announced H1 on July 21, 2026, positioning it as the first AI model for autonomous blueprint takeoffs: upload the drawings, get a complete material takeoff end to end, with benchmark blueprint sets available on research request. It is a bold generalist pitch, it is getting real press distribution, and if it delivers across trades it will be a useful tool. This page is a fair comparison, written two weeks into H1's public life.

The comparison that matters for a mechanical estimator is depth, not breadth. A ductwork bid is not a generic material list — it is fittings counted by type, gauge resolved per run against the spec or SMACNA minimums, pounds by gauge for pricing, and line items you can audit before they export. That duct-specific depth is DuctIQ's entire product, it is shipping today, and you can inspect the deliverable below without creating an account.

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What Handoff H1 is, from its own launch materials

Handoff describes H1 as an AI system that reads blueprints and produces a complete material takeoff autonomously — a general model spanning trades rather than a mechanical tool. The launch announcement emphasises end-to-end automation and offers benchmark sets with ground truth to researchers, which is a genuinely good sign: a vendor inviting measurement is a vendor worth taking seriously.

What the launch materials do not describe, as of this writing, is duct-level output: fitting schedules, SMACNA gauge and seam callouts, or sheet-metal pounds. That is not a criticism of a two-week-old product with a generalist mission — it is simply the gap a mechanical estimator has to check before trusting a bid to it. Verify current capabilities with Handoff directly; a new product moves fast.

Generalist blueprint AI vs a duct-specific takeoff

"Autonomous takeoff" and "HVAC takeoff" sound like the same category and are not. A generalist model optimises for coverage: many trades, many drawing types, one material list out. A duct-specific engine optimises for what happens after the list: an estimator has to price it, a shop has to fabricate from it, and a GC may ask where any number came from.

Concretely, that means the output units differ. A general material takeoff can tell you there is ductwork; a mechanical takeoff tells you 240 LF of 24×12 supply at 24 ga, eighteen elbows and six tees counted by type, RTU and diffuser counts reconciled against the schedules, and the pounds those gauges produce — organised the way a bid sheet prices it.

When Handoff might make sense

If you estimate many trades and want one AI pass over a full drawing set — a first-cut material list across concrete, framing, finishes, and mechanical — a generalist model is aiming at exactly your problem, and nothing duct-specific competes there. Early adopters who bid broad scopes may also value watching a heavily funded generalist improve quickly.

The honest trade-off is the same one this site notes for every new entrant, generalist or not: maturity is earned per drawing style and per trade, and the review tooling around a model matters as much as the model. Run it on your own set, not the demo set, and ask for the duct-specific rows of its benchmark results.

When DuctIQ makes sense

DuctIQ makes sense when the mechanical scope is what you price, and general material lists have never been enough to bid from.

• You need fittings counted by type alongside duct footage, not folded into a lump.
• You need gauge per run — from the spec when stated, SMACNA minimum labelled when not — and pounds by gauge for pricing.
• You want every quantity as a reviewable line with low-confidence reads flagged, so the audit happens before export.
• You want one-click Excel/CSV structured by system, size, and gauge for the workbook you already price in.
• You want a tool whose whole roadmap is HVAC ductwork, not one trade inside a general model.

Six dimensions that decide a ductwork takeoff

These are the rows a mechanical estimator should score any takeoff tool on. Where H1's public materials are silent, the honest cell is what to verify in a demo — ask to see it live on your own mechanical set.

Fair under uncertainty: H1 is two weeks old and its public materials describe a generalist scope, so the middle column lists what to verify rather than claims about what it lacks. DuctIQ's column you can check yourself today.

Autonomy still needs an audit

"Autonomous" is the headline claim to interrogate hardest, because no estimator submits a bid on an unaudited number — the question is whether the tool makes the audit fast or leaves you re-measuring. DuctIQ treats the review as the product: every duct run, fitting, device, and piece of equipment returns as a line item with a status, the reads the AI was less sure of are flagged with the reason and grouped first, and each line traces to its source sheet.

You confirm before anything exports. That is what turns an automated takeoff into a defensible bid, whoever's AI produced it.

The deliverable: priceable Excel, downloadable right now

A takeoff is only as useful as the file your pricing can consume. DuctIQ exports structured Excel and CSV — duct by system and size with gauge and linear feet, fittings, air devices, and equipment in their own sections, plus sheet-metal weights — in one click, with nothing locked in a proprietary format.

Judge it against whatever any other tool shows you: this sample comes from the real export pipeline, no account required.

Download the sample takeoff (Excel)Download the CSV versionRun a free takeoff on your own drawing

How to evaluate a two-week-old takeoff model

Handoff publishes benchmark blueprint sets with ground truth on research request — so use that openness. Ask for the mechanical rows of those benchmarks specifically: how does H1 score on duct linear feet, fitting counts, and equipment identification, not just overall material capture? Then run the decisive test, which no benchmark replaces: the same mechanical PDF through both tools, compared line by line against your own numbers.

DuctIQ's side of that test costs nothing — the first takeoff is free and the sample export above shows the output format before you even start.

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