Free HVAC Tools for Contractors
Calculators and tools built specifically for HVAC professionals. Price jobs, check margins, size equipment, generate proposals, and plan maintenance contracts - all for free.
HVAC Job Pricing Calculator
Calculate how much to charge for any HVAC job. Enter equipment, labor, materials, overhead, and profit margin to get a recommended selling price with a full cost breakdown.
Use ToolFree HVAC Proposal Generator
Create a basic HVAC proposal with your company info, client details, and itemized line items. Preview it on screen and download as a PDF. No signup required.
Use ToolBTU / AC Sizing Calculator
Determine the right AC unit size for any space. Enter square footage, climate zone, insulation quality, and more to get a BTU and tonnage recommendation.
Use ToolHVAC Profit Margin Calculator
Instantly calculate your profit margin, markup, and recommended selling price. Toggle between knowing your prices and targeting a specific margin.
Use ToolMaintenance Agreement Calculator
Price your recurring HVAC maintenance contracts for maximum profitability. Calculate monthly and annual pricing, profit per contract, and customer savings.
Use ToolWhy We Built Free HVAC Calculators
Most HVAC contractors price jobs from gut feel or a spreadsheet they built five years ago. That works until you underprice a job, leave money on the table, or lose a bid because the customer thought your quote looked unprofessional. These tools give you a faster, more consistent way to handle the math so you can focus on the work.
Every calculator here is designed for how HVAC contractors actually work. The pricing calculator accounts for equipment cost, labor hours, materials, overhead, and your target profit margin. The BTU calculator factors in climate zone, insulation quality, ceiling height, and sun exposure - not just square footage. The profit margin calculator helps you understand the difference between markup and margin, which is one of the most common mistakes contractors make when setting prices.
The proposal generator lets you build a basic proposal with itemized line items and download it as a PDF. It is not a replacement for full proposal software, but it is a significant step up from emailing a number or writing a quote on the back of a business card. For contractors sending more than a few proposals a week, ProposalKit adds branding, e-signatures, client tracking, and templates on top.
All tools run entirely in your browser - nothing is stored on our servers. They work on any device so you can use them on the jobsite, in your truck, or back at the office. No account required, no email gate, no limitations.
Ready to go professional?
Ready to take your proposals to the next level? ProposalKit combines all of these calculations with professional proposals, e-signatures, and client tracking in one platform.
14-day free trial · No credit card required