About this app
The fast, simple, field-ready HVAC load calculator - built for Home Service Professionals. HVAC Calculator Load Lite gives technicians, comfort advisors, and sales professionals a quick and reliable way to size furnaces and air conditioners without spreadsheets, manual formulas, or slow, complicated software. Designed for speed, clarity, and accuracy, this Lite version keeps the essentials: • Clean, easy-to-use interface • Fast HVAC load estimates • Residential heating & cooling BTU calculations • Climate and temperature-aware results • Clear outputs you can share or reference on any job Perfect for quoting, service calls, replacement consultations, and quick load checks - right in the field. Who It’s For? • HVAC technicians & installers • Comfort advisors & sales reps • Home service contractors • Residential retrofit professionals • Anyone who needs fast HVAC sizing without complexity What You Can Do With HVAC Calculator Load Lite • Size furnaces and air conditioners quickly • Complete residential BTU calculations in minutes • Generate climate-aware load estimates • Reduce sizing mistakes caused by guesswork • Improve customer confidence during estimates • Speed up replacement consultations • Equip your team with a consistent sizing method Why Pros Use It Traditional Manual J software is slow, technical, and difficult to use on a jobsite. Rule-of-thumb estimates create mistakes, callbacks, and lost trust. HVAC Calculator Load Lite solves both problems. It delivers practical, real-world HVAC sizing you can use instantly - right from your phone or iPad. Ideal For • Quick load calculations during customer visits • Fast estimates before running full Manual J • Techs who want an easy sizing tool • Sales professionals who need speed & accuracy • Companies looking for consistent, repeatable sizing Key Benefits • Fast, field-tested HVAC BTU calculations • Simplified heating & cooling load estimates • Helps reduce under-sizing and over-sizing errors • Boosts homeowner confidence during sales calls • Less time doing math, more time serving customers • Intuitive design made specifically for mobile use HVAC Calculator Load Lite gives you the essential HVAC sizing tools you need - without the complexity - so you can quote faster, reduce mistakes, and deliver better customer service. Download now and size HVAC systems with clarity and confidence. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://cozy-home-calc.lovable.app/privacy
Latest release
What’s New
• Improved HVAC load calculation accuracy for more reliable BTU results • Enhanced sizing logic for furnaces and air conditioners • Improved mobile workflow and input experience • Performance upgrades for faster calculations • General stability improvements and bug fixes HVAC Load Lite delivers fast, simple, and accurate HVAC load calculations, including BTU sizing, AC sizing, furnace sizing, and Manual J–style estimates - perfect for quick, reliable results in the field.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Oct 16, 2026 · 4:59 PM Free