
HVAC Calculator Load Lite
Built for HVAC Specialists
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Free
In-App Purchases
About
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
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What's New in HVAC Calculator Load Lite
1.0.4
April 6, 2026
• 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.
MoreSubscription plans
Weekly Access
Full access to all HVAC calculations
$1.997 Days
3 Days trial







