Use the free HVAC tools. Then turn the answers into customer follow-up that compounds.
These tools are the front door, not the whole product. Contractors use them to solve sizing, compliance, airflow, refrigerant, and equipment-age questions quickly. AssureStep helps you keep those answers tied to the installed base so they become service, warranty, and replacement action later.
How the funnel works
Solve one field question
Use a calculator, decoder, or compliance tool without friction.
Identify why it matters
Tie the answer to maintenance timing, warranty status, or equipment age.
Track it in AssureStep
Store the context against the installed base so the follow-up is still visible later.
What the product adds
- Customer and equipment records stored in one installed-base view.
- Maintenance and warranty timing surfaced without relying on memory.
- Equipment history kept available for service and replacement conversations.
- A practical path from a one-time calculation to a future revenue opportunity.
Free HVAC tools
Field-ready utilities with a clear product tie-in
BTU Calculator
Estimate heating and cooling load fast in the field.
Product tie-in: Keep sizing context with the customer record and equipment history.
Tonnage Calculator
Convert BTUs to tons and validate system sizing assumptions.
Product tie-in: Tie sizing decisions back to installed equipment for future replacement planning.
A2L Checker
Check compliance status and refrigerant transition implications.
Product tie-in: Track affected systems across your installed base instead of reviewing one unit at a time.
Serial Decoder
Estimate equipment age and identify likely install timing.
Product tie-in: Turn age checks into replacement watchlists and warranty follow-up triggers.
Refrigerant Calculator
Calculate refrigerant charge requirements with less friction.
Product tie-in: Add service context to the equipment history instead of losing it after the visit.
CFM Calculator
Calculate airflow targets quickly for system checks and recommendations.
Product tie-in: Keep airflow findings with the record so later service and replacement calls have context.
Duct Sizing
Quickly estimate duct dimensions for airflow planning.
Product tie-in: Sizing notes become more useful when they stay attached to the equipment history.
Static Pressure
Review system pressure and diagnose airflow-related issues faster.
Product tie-in: Save the findings to support future service decisions and homeowner recommendations.
SEER Calculator
Estimate efficiency levels and compare system performance expectations.
Product tie-in: Efficiency context improves replacement timing and upgrade conversations.
Heat Load Calculator
Estimate Manual J style heat load needs for better sizing conversations.
Product tie-in: Heat load context becomes part of the long-term equipment record, not a disposable note.
Recent calculations
Use the tools, then keep the context
Upgrade path
The calculation is useful. The installed-base workflow is where the revenue compounds.
AssureStep helps contractors move from isolated tool usage to a full picture of who needs maintenance follow-up, who is hitting warranty milestones, what equipment history matters, and where replacement opportunities are emerging.