The Growth Room

Free tools

Free calculators for HVAC owners. They run in your browser — no email, no sign-up, and nothing you type is sent to us.

Not sure which one you need? Start here — tools and guides grouped by the problem you're solving.

  • HVAC Service Agreement (Maintenance Plan) Pricing & Revenue Calculator
    Price your maintenance plan, see your margin per member, break-even price, recurring revenue, 3-year member count, and the repair work those visits bring in.
  • HVAC Break-Even Hourly Rate Calculator
    Turn your overhead, tech wages, burden, and billable efficiency into your fully loaded cost per billable hour, your break-even rate, and the rate that hits your profit target.
  • HVAC Flat-Rate Price Calculator
    Enter parts, labor hours, and your loaded labor cost to get the flat-rate price that hits your target gross margin, the markup that equals, and why 50% markup is not 50% margin.
  • HVAC Marketing ROI & Cost-per-Customer Calculator
    Enter what you spend on each lead source and the leads it brings to see cost per lead, cost per booked call, cost per customer, gross profit, ROI, and the close rate you need to break even.
  • HVAC Technician Turnover Cost Calculator
    Add up what losing one tech really costs — hiring, interviews, training, the empty truck, overtime, ramp-up, and callbacks — then see your yearly turnover cost and the raise that money could fund.
  • HVAC Revenue Goal Calculator
    Work backward from your annual revenue goal to the jobs you need per year, month, week, and day, the calls you need to run each day at your close rate, and revenue per tech.
  • HVAC Business Valuation Calculator (SDE × Multiple)
    Add back owner pay, personal expenses, and one-time costs to your net profit to get Seller's Discretionary Earnings (SDE) and SDE margin, then see a value range at the multiples you enter.
  • HVAC Technician Capacity Calculator (How Many Techs Do I Need?)
    Turn jobs per week (or a revenue goal) into billable hours and see how many techs you need in a normal week and at peak, how full your current team is, and when to hire.
  • HVAC Markup vs Margin Calculator
    Enter your job cost (parts, labor, and optional overhead) and a target margin or a markup to get the selling price, gross profit, and both percentages, plus a markup-to-margin table.
  • HVAC Missed Call & Booking Rate Revenue Calculator
    Enter your weekly calls, how many go unanswered, your booking rate, and average ticket to see the jobs and revenue missed calls cost you each year, and what a higher booking rate is worth.
  • HVAC Job Profit Calculator
    Enter the price, equipment, labor hours, permits, overhead, and commission on one job to see gross and net profit in dollars and percent, and the price that hits your target net margin.
  • HVAC Financing Payment Calculator (Good / Better / Best)
    Enter your three system prices, down payment, APR, and term to estimate the monthly payment, total paid, and interest on each option, plus what you keep after the lender's dealer fee.
  • Should I Hire Another HVAC Tech? Payback Calculator
    Enter wage, burden, benefits, truck cost, ramp-up, billable hours, and revenue per hour to see what a new tech costs each month, how long until they pay back, and their first-year profit.
  • HVAC Slow-Season Cash Reserve Calculator
    Enter your monthly overhead, the field payroll you keep on, and what slow months bring in to see your monthly shortfall, the cash reserve you need, how long your cash lasts, and what to set aside each busy month.
  • HVAC Sales Funnel & Close Rate Calculator
    Enter your monthly leads, booking rate, run rate, close rate, average ticket, and margin to see booked jobs, sold jobs, revenue, and gross profit, and what 5 more points of booking or closing is worth.
  • HVAC Labor Burden Calculator (Cost per Tech Hour)
    Add payroll taxes, unemployment, workers' comp, benefits, time off, and training to a tech's wage to see their fully burdened yearly cost, burden %, and what they really cost per paid and per billable hour.
  • HVAC Customer Lifetime Value (CLV) Calculator
    Enter your service ticket, visits per year, replacement ticket and odds, margin, and how long customers stay to see lifetime revenue, lifetime gross profit, the most you should spend to win a customer, and what one more year is worth.
  • HVAC Service Truck Cost Calculator (Per Hour & Per Job)
    Add up your truck payment, insurance, fuel, maintenance, truck stock, and extras to see what one service truck really costs per month, per year, per billable hour, per job, and per mile — and what more billable hours save.
  • HVAC Price Increase Calculator (How Many Jobs Can I Lose?)
    Enter your average ticket, jobs per month, gross margin, and a proposed price increase to see your new gross profit, how many jobs you could lose and still make the same gross profit, and outcomes at 0–15% fewer jobs.
  • HVAC Good / Better / Best Proposal Builder (Printable)
    Type in your three system options, prices, warranties, and extras to get a clean one-page proposal you can print or save as PDF, with optional monthly payment estimates and the price gap between each option.
  • HVAC Tech Pay Plan Calculator (Hourly vs Commission vs Hybrid)
    Enter one week of hours, overtime, revenue, parts, commission %, and hourly rate to compare what a tech earns and what it costs you under straight hourly, commission, and a hybrid plan — with overtime on the regular rate built in.
  • HVAC Accounts Receivable & DSO Calculator
    Enter what you bill on account, your A/R balance, and your aging buckets to see your days sales outstanding (DSO), the cash you would free by hitting a target DSO, what carrying the extra A/R costs a year, and how much is over 60 and 90 days.
  • HVAC Install / Replacement Job Pricing Calculator
    Enter equipment, materials, crew labor, permits, and subcontract costs plus your overhead, commission, financing fee, and target net profit to get the install price that covers them all, its gross margin, markup multiplier, and prices at 10/15/20% net.
  • HVAC Parts & Truck Stock Inventory Turnover Calculator
    Enter your yearly parts and materials cost, average warehouse + truck stock, truck count, and carrying cost % to see inventory turns, days on hand, what holding the stock costs a year, and the cash you would free by hitting a target number of turns.
  • HVAC Business Startup Cost & First-Year Cash Calculator
    Enter your one-time startup costs, monthly fixed costs, and an expected revenue ramp to see month-by-month cash for the first year, the month cash flow turns positive, and the minimum cash you need to start with plus a safety buffer.
  • HVAC Commercial Maintenance Contract Pricing Calculator
    Enter the rooftop units, split systems, and other equipment on a commercial site, your hours and materials per visit, visits per year, labor cost, and drive time to get an annual and monthly PM contract price that covers overhead and profit.
  • HVAC SEER2 Energy Savings Calculator
    Show a homeowner the yearly and lifetime cooling cost of their old system next to a new SEER2 unit, the payback on a higher-efficiency option, and a good / better / best comparison of up to three SEER2 levels.