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Head-to-head · HVAC Estimating Software

STACK vs CavSoft Evolution

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
STACK #3 in HVAC Estimating Software 7.8/10 Free plan · 7-day trial Free planFree trial✓ 0 of 6 features Visit STACK
CavSoft Evolution #4 in HVAC Estimating Software 7.8/10 Pricing on request ✓ 3 of 6 features Visit CavSoft

STACK leads on 0 checks, CavSoft Evolution on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Free planonly STACK
  • Free trialonly STACK
  • Most featuresCavSoft Evolution · 3 of 6

STACK and CavSoft Evolution score identically on our rubric (7.8 out of 10) for hvac estimating software; STACK sits at #3 and CavSoft Evolution at #4 in our editorial ranking, so the choice comes down to fit.

STACK is the better fit for teams needing broad takeoff and estimating workflows. CavSoft Evolution is the better fit for HVAC estimators preparing plan-based project proposals.

  • STACK fits best

    Teams needing broad takeoff and estimating workflows

  • CavSoft Evolution fits best

    HVAC estimators preparing plan-based project proposals

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature STACK 7.8/10 Visit ↗ CavSoft Evolution 7.8/10 Visit ↗
At a glance
Editor score 7.8 7.8
Ranking #3 in HVAC Estimating Software #4 in HVAC Estimating Software
Best for Teams needing broad takeoff and estimating workflows HVAC estimators preparing plan-based project proposals
Pricing model Free plan + paid Paid
Starting price — Pricing on request
Free plan ✓ (best) Not checked yet
Free trial 7 days —
Deployment Cloud, Desktop, Mobile Cloud
Platforms Web, Windows, iOS, Android Web
Support Email, Live chat, Phone, Community, Docs Email
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market
Features STACK 0/6 · CavSoft Evolution 3/6
HVAC cost database Not checked yet Not checked yet
Labor-rate database Not checked yet ✓ (best)
HVAC takeoff tools Not checked yet ✓ (best)
Proposal builder Not checked yet ✓ (best)
Job costing Not checked yet Not checked yet
QuickBooks sync Not checked yet Not checked yet
Specs
Mobile apps Not checked yet Not checked yet
Our review
Pros
  • Digital measurements, markups, overlays, and drawing comparisons
  • Labor, material, item, and assembly estimating worksheets
  • Web, desktop, mobile access with accounting and ERP integrations
  • Combines labor installation times and material costs in estimates
  • Drawing overlays help compare plan revisions and project changes
  • Customizable assemblies and customer-facing proposals support bid preparation
Cons
  • 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
  • Pricing is handled through sales rather than published plans
  • Browser access depends on an internet connection
  • No dedicated iOS or Android apps are documented
Our verdict

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 →

CavSoft Evolution is cloud-based estimating and takeoff software for HVAC contractors. It is aimed at estimators who prepare project proposals from plans and need labor installation times and material costs represented in their estimates.…

Read the review →
  1. STACKHVAC Estimating Software 7.8Free plan · 7-day trial
  2. CavSoft EvolutionHVAC Estimating Software 7.8Pricing on request

Strengths and trade-offs

  • 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

  • CavSoft Evolution — where it wins

    • Combines labor installation times and material costs in estimates
    • Drawing overlays help compare plan revisions and project changes
    • Customizable assemblies and customer-facing proposals support bid preparation

    Where it doesn't

    • Pricing is handled through sales rather than published plans
    • Browser access depends on an internet connection
    • No dedicated iOS or Android apps are documented
  • STACK7.8/10 · Free plan · 7-day trial

    Broad digital takeoff and estimating for HVAC teams that need construction-wide workflows.

    Visit STACKFull verdict →
  • CavSoft Evolution7.8/10 · Pricing on request

    A focused HVAC estimator combining plan takeoff, cost inputs and customer proposals.

    Visit CavSoftFull verdict →

More comparisons

All HVAC estimating software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update