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Head-to-head · HVAC Estimating Software

STACK vs ComfortQuote Pro

  • Updated Oct 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score STACK #3 in HVAC Estimating Software 7.8/10 Free plan · 7-day trial Free planFree trial✓ 0 of 6 features Visit STACK
ComfortQuote Pro #7 in HVAC Estimating Software 7.5/10 7-day trial Free trial✓ 2 of 6 features Try ComfortQuote Pro

STACK leads on 1 check, ComfortQuote Pro on 0, and 2 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreSTACK · 7.8/10
  • Free planonly STACK
  • Free trialboth
  • Most featuresComfortQuote Pro · 2 of 6

STACK scores higher on our rubric for hvac estimating software: 7.8 against 7.5 out of 10; our editors rank them #3 and #7.

STACK offers free plan; ComfortQuote Pro doesn't.

STACK is the better fit for teams needing broad takeoff and estimating workflows. ComfortQuote Pro is the better fit for small HVAC firms building equipment replacement proposals.

  • STACK fits best

    Teams needing broad takeoff and estimating workflows

  • ComfortQuote Pro fits best

    Small HVAC firms building equipment replacement 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 ↗ ComfortQuote Pro 7.5/10 Visit ↗
At a glance
Editor score 7.8 7.5
Ranking #3 in HVAC Estimating Software #7 in HVAC Estimating Software
Best for Teams needing broad takeoff and estimating workflows Small HVAC firms building equipment replacement proposals
Pricing model Free plan + paid Paid
Starting price — $15/mo
Free plan ✓ (best) —
Free trial 7 days 7 days
Free trial length 7 days · no card needed 7 days · no card needed
Deployment Cloud, Desktop, Mobile Cloud
Platforms Web, Windows, iOS, Android Web
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business
Features STACK 0/6 · ComfortQuote Pro 2/6
HVAC cost database Not checked yet ✓ (best)
Labor-rate database Not checked yet Not checked yet
HVAC takeoff tools Not checked yet Not checked yet
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 None
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
  • Good, Better, and Best estimates include equipment, warranties, and accessories
  • Branded proposals can be emailed and tracked as pending, won, or lost
  • Company plan adds checklists, repair parts, job history, and bulk Excel import
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
  • Web-only product with no native mobile applications
  • Technician Only Plan is limited to a solo technician
  • Company Plan supports up to 10 technician accounts
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 →

ComfortQuote Pro is browser-based estimating and proposal software for HVAC contractors and sales teams. Its central workflow builds Good, Better, and Best equipment options from configured pricing, then adds warranties and accessories…

Read the review →
  1. STACKHVAC Estimating Software 7.8Free plan · 7-day trial
  2. ComfortQuote ProHVAC Estimating Software 7.57-day trial

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

  • ComfortQuote Pro — where it wins

    • Good, Better, and Best estimates include equipment, warranties, and accessories
    • Branded proposals can be emailed and tracked as pending, won, or lost
    • Company plan adds checklists, repair parts, job history, and bulk Excel import

    Where it doesn't

    • Web-only product with no native mobile applications
    • Technician Only Plan is limited to a solo technician
    • Company Plan supports up to 10 technician accounts
  • STACK7.8/10 · Free plan · 7-day trial

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

    Visit STACKFull verdict →
  • ComfortQuote Pro7.5/10 · 7-day trial

    A focused HVAC proposal tool with equipment pricing, branding, and status tracking.

    Try ComfortQuote ProFull 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