Best Hvac Load Calculator Manual J Apps

223+ iOS apps curated and reviewed

4.7 avg rating
19 free apps
Updated May 2026

If you already know HVAC Load Calculator Manual J, this is the deeper bench. 223+ hvac load calculator manual j apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of May 2026.

Top Picks for Hvac Load Calculator Manual J

HVAC Load Calculator Manual J#1

HVAC Load Calculator Manual J by Mike Watson

BTU Sizing for Contractors
Editor's Choice
🔧 Utilities
4.7(28 ratings)
FreeIn-App Purchases
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This app provides professional HVAC load calculations for contractors, offering three levels of accuracy from quick estimates to detailed Manual J calculations. It's designed for field use with an intuitive interface, offline capabilities, and professional report generation.

Bluon HVAC#2

Bluon HVAC by Bluon, Inc.

HVAC Tools
Strong Contender
🔧 Utilities
4.8😐(4.4K ratings)
FreeAds
Bluon HVAC screenshot 1
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Access a vast database of HVAC models, manuals, and part lists to speed up your work. Utilize an AI-powered troubleshooting tool or connect with experienced technicians for real-time support.

What We Love

  • 🤖 Helpful tech support
  • 💯 Comprehensive database of manuals and information
  • 🛠️ Useful tools and calculators
  • 🤝 Great customer service

Room to Improve

  • 💰 Paywall for advanced features
  • 🔒 Limited access without company account
  • 🔍 Missing manuals for some equipment models
HVAC Calculator Load Pro#3

HVAC Calculator Load Pro by Ryan Perchak

Built for HVAC Specialists
Worth Considering
📊 Productivity
4.0(1 ratings)
FreeIn-App Purchases
HVAC Calculator Load Pro screenshot 1
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This tool provides fast, accurate HVAC load calculations for residential systems. It helps professionals size furnaces, air conditioners, and gas equipment correctly, avoiding guesswork and spreadsheets for confident client recommendations and more closed bids.

More Hvac Load Calculator Manual J apps to explore

4
HVAC Calculator Load Lite
HVAC Calculator Load Lite
HVAC Calculator Load Lite
Built for HVAC Specialists
Free
📊 Productivity
(0)
5
SuperCool Slide Rule HVAC
SuperCool Slide Rule HVAC
SuperCool Slide Rule HVAC
by Designstein, llc
Free

This app offers a comprehensive suite of tools for HVAC technicians. It provides interactive guides, step-by-step repair instructions, and calculators for various HVAC calculations including superheat, subcooling, and duct sizing.

Superheat & Subcooling chargingDuct sizing & layout calculatorCompressor windings troubleshooter
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6
AC Calculator - HVAC Sizing
AC Calculator - HVAC Sizing
AC Calculator - HVAC Sizing
Air conditioner or Heat Pump
Free

This utility app simplifies HVAC sizing by calculating BTU/h capacity and recommending equipment. It offers unit conversions, price estimates, and energy consumption comparisons. Advanced features can be unlocked via in-app purchases.

Calculate BTU/h capacityRecommend equipment typesConvert BTU, kW, Kcal, Tons
🔧 Utilities
(20)
free with in-app purchases
7
HVAC School
HVAC School
HVAC School
By Techs For Techs
Free

This app serves as a comprehensive resource for HVAC technicians, offering a podcast, tech tip articles, and interactive calculators. It aims to enhance knowledge of HVAC theory, industry updates, and essential mathematics for both current and aspiring professionals.

HVAC School podcast episodesTech tip articles by professionalsInteractive HVAC equation calculators
📚 Education
(81)
free
8
HVAC Toolkit Lite
HVAC Toolkit Lite
HVAC Toolkit Lite
Useful tool for HVAC engineers
Free

This tool assists HVAC engineers with design checks and quick calculations. It offers various tools for ducting friction loss, pipe sizing, ventilation, and heat load estimations, providing instructions and formulas for each calculation.

Friction loss calculationPipe sizingVentilation calculations
📊 Productivity
(1)
free
9
FMHero
FMHero
FMHero
Be an HVAC/R Hero!
Free

This app streamlines HVAC/R documentation, cutting paperwork time in half. It allows for quick unit scanning, precise refrigerant tracking, and ensures compliance with EPA regulations. Service records are stored permanently, moving with the user's career.

Slash documentation timeScan unit nameplatesRefrigerant and cylinder tracking
💼 Business
(14)
free
10
Daikin Tech Hub
Daikin Tech Hub
Daikin Tech Hub
by Goodman Global Holdings, Inc.
Free

This app provides Daikin service contractors with instant access to all technical and service information for Daikin products. It includes product specifications, manuals, error code troubleshooting, interactive field settings, and service videos. The app works online and offline, syncing data automatically for the latest updates.

Product Technical SpecificationsAll Documents in one placeError Codes with troubleshooting
💼 Business
(3.6K)
free
11
EPA 608 Practice Test 2026
EPA 608 Practice Test 2026
EPA 608 Practice Test 2026
Prepare for your Certification
Free

Prepare for your EPA 608 HVAC certification with over 500 practice questions and smart analytics. This app offers offline access, topic-based study, mock tests, and personalized plans to help you pass on your first attempt.

500+ practice questionsSmart analyticsOffline access
📚 Education
(2.5K)
free with in-app purchases
12
Calculator of Air
Calculator of Air
Calculator of Air
Psychrometric Charts Tool
Free

This tool calculates humidity-related air properties with a calculator-like interface. It supports six key parameters and provides accurate results even under extreme conditions. Ideal for HVAC, cleanrooms, and industrial drying.

Calculate six humidity parametersAccurate results under extreme conditionsSupports Celsius and Fahrenheit
📊 Productivity
(14)
ad-supported
13
HVAC Test Prep 2025
HVAC Test Prep 2025
HVAC Test Prep 2025
HVAC Certification Exam Prep
Free

Prepare for your HVAC certification exam with a comprehensive collection of practice quizzes and expert explanations. This app offers custom test creation, progress tracking, and offline access to study materials, helping you master essential HVAC concepts and build confidence for your certification.

Extensive question databaseInsightful feedback and explanationsCustomizable quiz creation
📚 Education
(1)
subscription
14
Heating & Cooling HVAC Pro+
Heating & Cooling HVAC Pro+
Heating & Cooling HVAC Pro+
HVAC Tools
Free

This app provides HVAC professionals with quick access to product information, tools, and support. It allows users to check pricing, availability, find locations, and manage warranty claims. Features include a PT calculator, duct calculators, and a flashlight tool for on-site work.

View pricing and order statusReal-time product availabilityFind branch locations and hours
📊 Productivity
(42)
ad-supported
15
HVAC & Sheet Metal Calculator
HVAC & Sheet Metal Calculator
HVAC & Sheet Metal Calculator
Construction Math & Trade Pro
Free
$29.99 | 100% OFF

This app provides advanced calculations for HVAC and sheet metal professionals. It simplifies complex dimensional math, geometry, and trigonometry with specialized functions for ducting, airflow, and construction layouts. Offers a free trial before committing to a subscription.

Sheet metal calculations (radius, offset, wrapper length)Trigonometric functions (sine, cosine, tangent, arc)HVAC specific calculations (fan law, CFM, velocity)
🔧 Utilities
(40)
free with in-app purchases
16
Duct Calculator Elite
Duct Calculator Elite
Duct Calculator Elite
Ducting Size Calculator
$6.99

This app simplifies HVAC duct sizing calculations. It computes duct size, velocity, pressure drop, and flow rate with an intuitive interface. Supports various units and duct materials for precise HVAC design.

Calculate duct size, velocity, pressure drop, flow rateDuct Size by Airflow modeDuct Size by Dimension mode
🔧 Utilities
(220)
paid
17
AWG Calculator: Wire Size
AWG Calculator: Wire Size
AWG Calculator: Wire Size
Electrician Wire Tool
Free

This professional tool provides electricians with accurate, code-based electrical calculations for wire sizing, voltage drop, circuit breakers, and more. It includes NEC® code references and specialized calculations for various systems. Save time and ensure accuracy in the field or during planning.

Wire size (AWG) calculationsVoltage drop calculationCircuit breaker sizing
🔧 Utilities
(67)
free with in-app purchases
18
American Standard® Technician
American Standard® Technician
American Standard® Technician
by Trane Technologies Company LLC
Free

This app helps HVAC technicians and companies streamline installation, commissioning, and service. It offers guided setup, remote monitoring of smart thermostats, and access to product resources. Enhance efficiency and ensure optimal system performance with user-friendly tools.

Streamlined installation and commissioningRemote monitoring of smart thermostatsStep-by-step guidance for technicians
💼 Business
(77)
free
19
measureQuick HVAC
measureQuick HVAC
measureQuick HVAC
Connect. Perform. Prosper.
Free

This application helps HVAC technicians diagnose and repair systems quickly and accurately. It offers robust diagnostic tools to identify problems faster, leading to fewer callbacks and more satisfied customers. It supports various HVAC systems, making it an all-in-one solution for professionals.

Quick HVAC system diagnosisAccurate repair solutionsReduced troubleshooting time
📊 Productivity
(5)
free
20
Concrete Calculator Plus
Concrete Calculator Plus
Concrete Calculator Plus
by Inch Calculator
Free

This app provides 15 calculators for estimating concrete, blocks, mortar, rebar, and gravel. It supports various shapes and units, offering material cost estimations for construction projects.

15 concrete estimation calculatorsEstimates cubic yards or bagsCalculates material costs
🔧 Utilities
(21K)
ad-supported