Contractor tools
Use Dabe tools to check HVAC planning, plumbing volume, roofing materials, pricing, ROI, templates, checklists, and service business numbers before the next estimate conversation.
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Check CFM, ACH, duct sizing, load, refrigeration BTU, and SEER savings before moving into detailed equipment selection.
Each tool is designed to make inputs, assumptions, and next steps easier to explain to a manager, dispatcher, technician, or homeowner.
Estimate air changes per hour from room volume and airflow.
Model EBITDA, asset-floor valuation, and platform uplift for a service business.
Calculate flow from diameter and velocity, or from volume over time.
Convert part cost and markup percentage into selling price.
Find required CFM from room size and desired air changes per hour.
Estimate duct size, effective length, velocity, and friction loss.
Calculate billable labor rate for HVAC service teams.
Estimate cooling BTU load and recommended equipment sizing.
Use a printable seasonal HVAC maintenance checklist for technician notes, homeowner explanations, and service follow-up.
Use a repair and replacement estimate template with line items, assumptions, disclaimers, and customer-ready next steps.
Calculate margin from billable revenue, costs, and overhead.
Run the service-business valuation model with HVAC positioning.
Find overhead coverage, break-even, and billable labor rates.
Calculate liquid volume and water weight from pipe diameter and length.
Calculate billable labor rate for plumbing teams.
Estimate monthly revenue increase, annual increase, and ROI percentage.
Estimate cooling capacity from volume and temperature difference.
Collect listing information for a report request workflow.
Calculate roof area, roofing materials, shingles, and bundles.
Estimate cooling and heating energy savings from efficiency upgrades.
Estimate revenue lift from scheduling, dispatch, tracking, and estimate workflows.