HVAC Tools
Free calculators, templates, and generators built for HVAC contractors. Price jobs, download documents, and grow your shop without paying for generic software.
Free tools for contractors
Free Tools for HVAC, Plumbing & Electrical Contractors
Calculators, templates, and generators built for home service businesses. Price jobs accurately, download professional documents, and grow your shop — all free.
Browse tools by trade
Every trade gets its own calculators, templates, and generators — plus universal tools that work for any contractor.
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Electrical Tools
Free calculators, templates, and generators built for Electrical contractors. Price jobs, download documents, and grow your shop without paying for generic software.
Plumbing Tools
Free calculators, templates, and generators built for Plumbing contractors. Price jobs, download documents, and grow your shop without paying for generic software.
Universal Tools
Calculators that work for any home service trade — tax estimates, customer lifetime value, marketing ROI, and employee cost breakdowns.
Popular tools
Calculators and templates contractors use most — start here.
BTU Calculator
Estimate heating and cooling BTUs from room size, climate zone, insulation, ceiling height, windows, and sun exposure — with tonnage recommendations for AC and heating.
Profit Margin Calculator
Calculate net profit per electrical job including materials and labor.
Profit Margin Calculator
Calculate net profit per plumbing job after labor and materials.
Marketing ROI Calculator
Measure return on Google Ads, mailers, and other lead sources.
Related resources for contractors
Templates, articles, and product pages to help you grow your home service business.
Business Templates
Free downloadable invoices, estimates, work orders, and agreements for every trade.
Browse templatesContractor Licensing
State-by-state license requirements, exams, fees, and official board links for every trade.
View licensing guidesContractor Blog
Practical guides on pricing, hiring, marketing, and operations for home service businesses.
Read guidesMeet Larry
Your AI receptionist that answers every call, books jobs, and follows up on leads 24/7.
See Larry in actionWhy contractors use free business tools
Running a home service business means making dozens of pricing, hiring, and marketing decisions every week — often without a finance team or marketing department backing you up. Free calculators help you understand margins before you quote a job. Templates keep invoices and estimates consistent across your crew. Generators save hours on repetitive tasks like review links and job postings.
CloseCrew built these tools for HVAC, plumbing, and electrical contractors who want to run a tighter operation without paying for generic software. Use the profit margin calculator before raising prices. Download an estimate template that matches how your techs actually work. Generate a Google review link you can text customers after every completed job.
Pair these free tools with Larry, your AI receptionist, to capture every lead while your paperwork stays organized. Tools help you quote and operate smarter; Larry makes sure no call goes unanswered.
Free tools FAQs
Are CloseCrew free tools really free for contractors?
Yes. Every calculator, template, and generator on CloseCrew is free to use. We built them for HVAC, plumbing, and electrical contractors who need professional business tools without paying for generic software.
Do I need to create an account to use the tools?
Calculators and generators work without an account. Some template downloads may ask for your email so we can send you the file — you can unsubscribe anytime.
Which tools should a new contractor start with?
Start with the profit margin calculator and missed call cost calculator to understand your numbers. Then download an estimate template and invoice template so every customer interaction looks professional from day one.
Are there separate tools for HVAC, plumbing, and electrical?
Yes. Each trade has its own calculators, templates, and generators with trade-specific defaults. Universal tools like marketing ROI and customer lifetime value work for any home service business.
Can I use these tools alongside CloseCrew and Larry?
Absolutely. Contractors use free tools to price jobs and stay organized while Larry, your AI receptionist, handles inbound calls, booking, and follow-ups. Tools help you run smarter; Larry helps you capture every lead.
