Free HVAC tools
- free tools
- 7
- figures they ask you for
- 51
- answers they give back
- 40
- New HVAC system cost calculator, on the worked example
- $15,415
Every tool computes its answer on the page, free, with no account and no trial clock. The paid plan is about keeping what you make.
Every figure on this page is computed from the inputs you enter, by the method stated below it. CoilDesk publishes no market averages and quotes no survey: the defaults are a worked example to replace with your own.
- New HVAC system cost calculator Size the system, price the equipment, add the ductwork and the labor, and see the number to put on the quote. Free
- HVAC maintenance checklist Build the checklist for a tune up or a full annual service, with the time and cost of the visit. Free
- HVAC invoice software Raise a service invoice: call out fee, labor, marked up parts, tax, and the balance due. Free
- HVAC cost estimator Build a flat rate price from your own wage, burden, overhead and margin, one task at a time. Free
- HVAC service agreement template Price a maintenance agreement: what the visits cost you, what the discount costs you, and what to charge. Free
- HVAC quote software Price a whole install as a quote: equipment, materials, labor, permits, markup, tax and the deposit. Free
- HVAC trunk line calculator Turn tonnage into CFM, then into the trunk and branch sizes that carry it quietly. Free
Cite or embed this figure
New HVAC system cost calculator (Price to quote): $15,415, CoilDesk, worked example.
Cite as: "CoilDesk HVAC Tools", updated 2026-08-25, https://coildesk.com/tools/.