# CoilDesk > 7 free HVAC contractor tools: system cost, flat rate pricing, duct sizing, quotes, invoices, maintenance checklists and service agreements. Every worked answer is on the page in text. ## What this is for - Built for HVAC contractors only ## Tools - [HVAC pricing calculator](https://coildesk.com/tools/system-cost/): Price a system install from your own costs: size it from the floor area, price the equipment and ductwork, add your labor and margin, and see the number to put on the quote. - [HVAC labor rate calculator](https://coildesk.com/tools/flat-rate/): Build a flat rate price from your own wage, burden, overhead and margin, one task at a time. - [HVAC trunk line calculator](https://coildesk.com/tools/duct-size/): Turn tonnage into CFM, then into the trunk and branch sizes that carry it quietly. - [HVAC quote software](https://coildesk.com/tools/quote-builder/): Price a whole install as a quote: equipment, materials, labor, permits, markup, tax and the deposit. - [HVAC invoice software](https://coildesk.com/tools/invoice/): Raise a service invoice: call out fee, labor, marked up parts, tax, and the balance due. - [HVAC maintenance checklist](https://coildesk.com/tools/maintenance-checklist/): Build the checklist for a tune up or a full annual service, with the time and cost of the visit. - [HVAC service agreement template](https://coildesk.com/tools/service-agreement/): Price a maintenance agreement: what the visits cost you, what the discount costs you, and what to charge. ## Guides - [HVAC CRM](https://coildesk.com/hvac-crm/): what the job needs, and the free CoilDesk tool for it - [HVAC pricing software](https://coildesk.com/hvac-pricing-software/): what the job needs, and the free CoilDesk tool for it - [HVAC invoicing software](https://coildesk.com/hvac-invoicing-software/): what the job needs, and the free CoilDesk tool for it - [HVAC dispatch software](https://coildesk.com/hvac-dispatch-software/): what the job needs, and the free CoilDesk tool for it - [Residential HVAC estimating software](https://coildesk.com/residential-hvac-estimating-software/): what the job needs, and the free CoilDesk tool for it ## Answers - [hvac software for small businesses](https://coildesk.com/answers/hvac-software-for-small-businesses/) - [best hvac software](https://coildesk.com/answers/best-hvac-software/) - [hvac office software](https://coildesk.com/answers/hvac-office-software/) - [hvac management software](https://coildesk.com/answers/hvac-management-software/) - [hvac service management software](https://coildesk.com/answers/hvac-service-management-software/) - [hvac service agreement software](https://coildesk.com/answers/hvac-service-agreement-software/) - [hvac field service management software](https://coildesk.com/answers/hvac-field-service-management-software/) - [hvac crm software](https://coildesk.com/answers/hvac-crm-software/) - [commercial hvac software](https://coildesk.com/answers/commercial-hvac-software/) - [hvac maintenance software](https://coildesk.com/answers/hvac-maintenance-software/) - [hvac apps](https://coildesk.com/answers/hvac-apps/) - [best app for hvac business](https://coildesk.com/answers/best-app-for-hvac-business/) - [hvac service app](https://coildesk.com/answers/hvac-service-app/) - [hvac dispatch app](https://coildesk.com/answers/hvac-dispatch-app/) - [hvac dispatching tips](https://coildesk.com/answers/hvac-dispatching-tips/) - [hvac scheduling](https://coildesk.com/answers/hvac-scheduling/) - [hvac billing software](https://coildesk.com/answers/hvac-billing-software/) - [hvac accounting software](https://coildesk.com/answers/hvac-accounting-software/) - [hvac work order template](https://coildesk.com/answers/hvac-work-order-template/) - [hvac estimating app](https://coildesk.com/answers/hvac-estimating-app/) - [hvac quoting software](https://coildesk.com/answers/hvac-quoting-software/) - [hvac proposal template](https://coildesk.com/answers/hvac-proposal-template/) - [hvac bid proposal template](https://coildesk.com/answers/hvac-bid-proposal-template/) - [hvac contracts](https://coildesk.com/answers/hvac-contracts/) - [hvac flat rate pricing](https://coildesk.com/answers/hvac-flat-rate-pricing/) - [hvac flat rate pricing software](https://coildesk.com/answers/hvac-flat-rate-pricing-software/) - [hvac price book](https://coildesk.com/answers/hvac-price-book/) - [hvac parts markup chart](https://coildesk.com/answers/hvac-parts-markup-chart/) - [hvac labor rates](https://coildesk.com/answers/hvac-labor-rates/) - [hvac maintenance plans](https://coildesk.com/answers/hvac-maintenance-plans/) - [hvac maintenance contract](https://coildesk.com/answers/hvac-maintenance-contract/) - [commercial hvac maintenance checklist](https://coildesk.com/answers/commercial-hvac-maintenance-checklist/) - [hvac checklist template](https://coildesk.com/answers/hvac-checklist-template/) - [hvac inspection checklist](https://coildesk.com/answers/hvac-inspection-checklist/) - [hvac installation checklist](https://coildesk.com/answers/hvac-installation-checklist/) - [hvac inventory management software](https://coildesk.com/answers/hvac-inventory-management-software/) - [hvac project management software](https://coildesk.com/answers/hvac-project-management-software/) - [how to run an hvac business](https://coildesk.com/answers/how-to-run-an-hvac-business/) - [hvac business plan template](https://coildesk.com/answers/hvac-business-plan-template/) - [how to grow your hvac business](https://coildesk.com/answers/how-to-grow-your-hvac-business/) - [hvac sales process](https://coildesk.com/answers/hvac-sales-process/) - [hvac cfm calculation](https://coildesk.com/answers/hvac-cfm-calculation/) - [hvac load calculation formula](https://coildesk.com/answers/hvac-load-calculation-formula/) - [hvac ductwork calculator](https://coildesk.com/answers/hvac-ductwork-calculator/) - [air balance report template](https://coildesk.com/answers/air-balance-report-template/) ## Pricing - Free to use. No account, no card, no sign-up. - CoilDesk Pro is $49 per month for your whole team, billed monthly. ## Citation Cite as: "CoilDesk HVAC Tools", https://coildesk.com/tools/ (updated 2026-10-12). ## About - Operated by Ellul Solutions Ltd. Contact: hello@coildesk.com - By submitting you agree CoilDesk may contact you about your enquiry. We do not sell your details to contractors or anyone else.