HVAC Load Calculator · Office #39,453

What it is

Calls itself “Manual J calculator”.

• Calls itself: Manual J calculator

“Free Manual J calculator with real ZIP-code design temps”

Where it puts itself

Publishes a comparison page.

“This tool does something different. It runs a genuine whole-house block load”

“No account, no email gate.”

What it costs

A free tier, free forever. No monthly plan.

• Monthly: no
• Commission: no
• Free plan: free forever

“Free · Manual J method · No account”

“That is an affiliate link - we may earn a commission on purchases”

Who it sells to

Sells to businesses. Made for technicians.

• Sells to: businesses
• Made for: technicians

“Professional estimating aid for qualified technicians”

How it runs

A mobile app and web app for Android and iOS. Runs locally and works offline. Distributed through the App Store and Play Store. Built with Google Analytics.

• Kind: mobile · web
• Runs on: Android · iOS
• Runs where: on the device, offline
• Distributed via: App Store · Play Store
• Analytics: Google Analytics

“Same engine as the iOS/Android app”

“A whole-house Manual J load calculation in your browser”

What it works with

Names A2L Certification Test Prep, HVACDirect and 2 more on its pages.

• Names: A2L Certification Test Prep · HVACDirect · Heat Pump Sizing Canada · +1

“A2L Certification Test Prep”

“HVAC Load Calculator”

What it offers as proof

Live, no waitlist. Claims “300+”. Try it without signing up. Publishes docs.

• Number claimed: 300+
• Trial asks for: nothing

“No account, no email gate.”

“No account, no email, no PDF paywall.”