Head-to-head · HVAC Estimating Software
Trimble AutoBid Mechanical vs STACK
Trimble AutoBid Mechanical leads on 0 checks, STACK on 1, and 0 are even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreSTACK · 5.0/10
- Free planonly STACK
Our editors rank Trimble AutoBid Mechanical at #1 and STACK at #3 for hvac estimating software; Trimble AutoBid Mechanical has no rubric score yet (facts researched, not yet scored), so the checks below decide.
STACK offers free plan; Trimble AutoBid Mechanical doesn't publish it.
Trimble AutoBid Mechanical is the better fit for mechanical contractors pricing specification-driven bids. STACK is the better fit for teams needing broad takeoff and estimating workflows.
- Trimble AutoBid Mechanical fits best
Mechanical contractors pricing specification-driven bids
- STACK fits best
Teams needing broad takeoff and estimating workflows
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Side by side
| Feature | Trimble AutoBid Mechanical —/10 Visit ↗ | STACK 5.0/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | — | 5.0 |
| Ranking | #1 in HVAC Estimating Software | #3 in HVAC Estimating Software |
| Best for | Mechanical contractors pricing specification-driven bids | Teams needing broad takeoff and estimating workflows |
| Pricing model | Paid | Free plan + paid |
| Starting price | Not published | Not published |
| Free plan | Not published | ✓ (best) |
| Free trial | — | — |
| Support | Email, Community | Email, Live chat, Phone, Community, Docs |
| Built for | Small business, Mid-market, Enterprise | Solo, Small business, Mid-market, Enterprise |
| Features Trimble AutoBid Mechanical 0/6 · STACK 0/6 | ||
| HVAC cost database | Not published | Not published |
| Labor-rate database | Not published | Not published |
| HVAC takeoff tools | Not published | Not published |
| Proposal builder | Not published | Not published |
| Job costing | Not published | Not published |
| QuickBooks sync | Not published | Not published |
| Specs | ||
| Mobile apps | Not published | Not published |
| Our review | ||
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| Cons |
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| Our verdict | Trimble AutoBid Mechanical is estimating software for commercial and industrial mechanical, piping and plumbing contractors. It is designed for specialty contractors and estimators preparing specification-driven bids, with digital… Read the review → |
STACK is a cloud-based construction preconstruction platform for specialty contractors, general contractors, suppliers, manufacturers, owners, and developers. Its Takeoff & Estimate product lets HVAC teams upload digital plans, mark up… Read the review → |
Strengths and trade-offs
Trimble AutoBid Mechanical — where it wins
- Specification-driven digital takeoffs for commercial and industrial work
- Automatic fitting generation with pre-built construction assemblies
- Built-in MCAA and PHCC labor units plus material pricing services
Where it doesn't
- Pricing requires contacting Trimble sales
- Focused on mechanical, piping and plumbing estimating workflows
- Support is provided through email and community channels
STACK — where it wins
- Digital measurements, markups, overlays, and drawing comparisons
- Labor, material, item, and assembly estimating worksheets
- Web, desktop, mobile access with accounting and ERP integrations
Where it doesn't
- Workflows are construction-wide rather than HVAC-specific
- ERP connectors are available only as a Pro add-on
- Free plan focuses on viewing, markup, and core takeoff tools
- Trimble AutoBid Mechanical—/10 · Pricing on request
Specification-focused takeoffs, assemblies, fittings and labor units for mechanical bid teams.
Visit TrimbleFull verdict → - STACK5.0/10 · Free plan · 7-day trial
Broad digital takeoff and estimating for HVAC teams that need construction-wide workflows.
Visit STACKFull verdict →
More comparisons
- Trimble AutoBid Mechanical vs McCormick Systems
- Trimble AutoBid Mechanical vs CavSoft Evolution
- Trimble AutoBid Mechanical vs OneEstimate
- Trimble AutoBid Mechanical vs QuoteSoft
- Trimble AutoBid Mechanical vs ComfortQuote Pro
- Trimble AutoBid Mechanical vs Profit Rhino
- McCormick Systems vs STACK
- STACK vs CavSoft Evolution
All HVAC estimating software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026