Best In Hvac Calculator Apps

223+ iOS apps curated and reviewed

4.1 avg rating
17 free apps
Updated June 2026

With an average user rating of 4.1β˜…, the in hvac calculator category is one of the App Store's strongest. Browse all 223+ apps we track, sorted so the most loved ones surface first.

Top Picks for In Hvac Calculator

IN HVAC Calculator#1

IN HVAC Calculator by Gregory Enterprises

HVAC Calculator & Reference
Editor's Choice
πŸ”§ Utilities
4.2(11 ratings)
Free
IN HVAC Calculator screenshot 1
IN HVAC Calculator screenshot 2
IN HVAC Calculator screenshot 3
IN HVAC Calculator screenshot 4

This app provides HVAC inspection tools and guidelines for home inspectors. It helps estimate equipment age, size, and requirements, giving inspectors confidence in their reports.

HVACR Check & Charge#2

HVACR Check & Charge by Copeland LP

PT Charts Superheat Subcooling
Strong Contender
πŸ” Reference
4.8😊(17K ratings)
Free
HVACR Check & Charge screenshot 1
HVACR Check & Charge screenshot 2
HVACR Check & Charge screenshot 3
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HVACR Check & Charge screenshot 5
HVACR Check & Charge screenshot 6

This app provides an instant mobile refrigerant charge calculator for HVACR applications. It supports various refrigerants and allows users to calculate the correct system charge based on superheat, subcooling, or airflow, along with environmental conditions.

What We Love

  • πŸš€ Convenient
  • πŸš€ Great program
  • πŸš€ Reliable app
  • πŸš€ Easy and quick charging reference

Room to Improve

  • πŸ› Pressure settings not helpful
  • πŸ”’ Concerning privacy policy
  • πŸ› Restricted temperature range
Bluon HVAC#3

Bluon HVAC by Bluon, Inc.

HVAC Tools
Worth Considering
πŸ”§ Utilities
4.8😐(4.4K ratings)
FreeAds
Bluon HVAC screenshot 1
Bluon HVAC screenshot 2
Bluon HVAC screenshot 3
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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

  • πŸ€– Helpful tech support
  • πŸ’― Comprehensive database of manuals and information
  • πŸ› οΈ Useful tools and calculators
  • 🀝 Great customer service

Room to Improve

  • πŸ’° Paywall for advanced features
  • πŸ”’ Limited access without company account
  • πŸ” Missing manuals for some equipment models

More In Hvac Calculator apps to explore

4
HVAC Exam Prep 2026
HVAC Exam Prep 2026
HVAC Exam Prep 2026
Pass HVAC Exam & Practice Test
Free

Prepare for your HVAC technician certification exam with a comprehensive mobile study tool. It offers a scientific study system, over 1,700 practice questions with detailed explanations, and simulated exams designed by experts. Track your progress and boost confidence for your first attempt.

1,700+ specialized questionsDetailed explanationsSimulated exam quizzes
πŸ“š Education
(93)
subscription
5
BTU Calculator -  Data Centers
BTU Calculator -  Data Centers
BTU Calculator - Data Centers
Cooling Requirements
Free

Estimate the cooling capacity needed for your data center. This tool considers factors like space, occupants, and heat output to help you maintain optimal temperature and humidity. It provides instant results as you update inputs, serving as a guide for system selection.

Estimate cooling capacityMaintain 24Β°C and 30-50% humidityConsider space, occupants, window R-value
πŸ”§ Utilities
(288)
free with in-app purchases
6
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
πŸ“Š Productivity
(42)
ad-supported
7
Thermaflex Duct Calculator
Thermaflex Duct Calculator
Thermaflex Duct Calculator
by Gastite Products LLC
Free

This utility app helps HVAC engineers quickly calculate the recommended Thermaflex duct size for installations. Input project volume and friction loss to determine the optimal duct size based on established industry standards.

Calculate recommended duct sizeInput project volume and friction lossSelect Thermaflex product
πŸ”§ Utilities
(1)
free
8
Ductulator - Duct Sizing
Ductulator - Duct Sizing
Ductulator - Duct Sizing
HVAC Duct Design Calculator
$3.99

Instantly calculate HVAC duct sizes based on airflow, friction rate, or velocity. This tool provides accurate duct dimensions in seconds without needing charts, supporting various duct types and units.

Instant duct sizingFriction rate or velocity calculationMultiple valid duct dimensions
πŸ“Š Productivity
(272)
free
9
Calculator for iPadβ‚Š
Calculator for iPadβ‚Š
Calculator for iPadβ‚Š
Basic, Scientific, Plus Calc
Free

This app offers both basic and advanced scientific calculations with an intuitive interface designed for tablets and phones. It includes features like currency conversion, calculation history, and the ability to share results. An optional premium membership removes ads and provides enhanced support.

Basic & Scientific CalculatorAdvanced Scientific FunctionsLive Currency Converter
πŸ”§ Utilities
(126K)
free with in-app purchases
10
HVAC Residential Load Calcs
HVAC Residential Load Calcs
HVAC Residential Load Calcs
Calculate cool/heat loads...
$34.99

Perform detailed residential heating and cooling load calculations in the field. This app offers extensive data on building materials, weather, and project management for HVAC engineers and technicians.

Block and room-by-room load calculations1000+ city weather databaseExtensive construction material data
πŸ’Ό Business
(3)
paid
11
P-T Calculator
P-T Calculator
P-T Calculator
by National Refrigerants, Inc.
Free

This tool simplifies HVAC/R technician tasks by calculating pressure/temperature relationships, superheat, and subcool. It automatically adjusts for altitude and offers English/Metric units. Easily access favorite refrigerants and supplementary information.

Pressure/Temperature calculationSuperheat/Subcool calculationAutomatic altitude correction
πŸ” Reference
(51)
free
12
Feet and Inches Calculator
Feet and Inches Calculator
Feet and Inches Calculator
Perfect Construction Calc!
Free

A powerful construction calculator designed for tradespeople. It offers a wide range of tools for estimating, layout, framing, and jobsite calculations, helping to save time and improve accuracy. Supports both imperial and metric units.

Construction math and estimatingLayout, framing, and jobsite calculationsImperial and metric unit conversion
πŸ”§ Utilities
(384)
free with in-app purchases
13
HVAC PT Chart
HVAC PT Chart
HVAC PT Chart
HVAC Pressure/Temp Charts
Free

This tool provides HVAC technicians with instant access to pressure and temperature data for over 100 refrigerants. It allows users to input one value to find the other, view detailed refrigerant properties, and email comprehensive charts and data.

Pressure/temperature lookup for 100+ refrigerantsInput temperature to find pressure, or vice versaSlider control for precise value selection
πŸ“Š Productivity
(8)
free
14
Construction Master Pro Calc
Construction Master Pro Calc
Construction Master Pro Calc
Feet Inch Fraction Calculator
Free

This app is a powerful construction calculator designed for professionals working with dimensions. It offers a wide range of solutions for dimensional math, right angle calculations, area and volume, and special functions, helping to improve speed and accuracy in layouts, bids, and estimates.

Dimensional math and conversionsRight angle and rafter calculationsArea and volume solutions
πŸ”§ Utilities
(39K)
free with in-app purchases
15
Calculator HD++
Calculator HD++
Calculator HD++
by smalltech sarl
Free

This application offers a high-precision calculation engine with a user-friendly interface. It allows for real-time result display as formulas are typed, supports multiple undo actions, and enables easy switching between workspaces. Users can also access persistent history, print calculations via AirPrint, and share history via email.

High precision calculation engineResults displayed while typingMultiple undo functionality
πŸ”§ Utilities
(268)
ad-supported
16
EPA 608 HVAC Exam Prep 2026
EPA 608 HVAC Exam Prep 2026
EPA 608 HVAC Exam Prep 2026
Practice HVAC Exam Questions
Free

Prepare for your EPA 608 HVAC certification exam with a comprehensive mobile study tool. Access over 1,200 practice questions, detailed study content, and versatile testing modes to build confidence and pass on your first attempt.

Over 1,200 practice questionsTopic-specific focusVersatile testing modes
πŸ“š Education
(19)
free with in-app purchases
17
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
πŸ“Š Productivity
(14)
ad-supported
18
HVAC Load Plus
HVAC Load Plus
HVAC Load Plus
HVAC cooling and heating loads
$24.99

Perform detailed heating and cooling load calculations for buildings in the field using your iPhone. Access a vast weather database and construction data to generate comprehensive reports that can be emailed or exported to spreadsheets.

Detailed heating and cooling load calculations1000+ city weather databaseExtensive construction type data
πŸ“Š Productivity
(5)
paid
19
Duct Calculator
Duct Calculator
Duct Calculator
by OMIKRON MAKINE MUHENDISLIGI IC VE DIS TICARET SANAYI LIMITED SIRKETI
Free

This mobile application simplifies duct size calculations for various needs. It offers a straightforward way to determine the correct dimensions for your ductwork, ensuring efficient airflow and system performance.

Duct size calculationAirflow determinationEfficient system performance
πŸ”§ Utilities
(1)
free
20
Duct Calculator - DuctCalc
Duct Calculator - DuctCalc
Duct Calculator - DuctCalc
HVAC Sizing & Psychrometric
Free

This app provides professional HVAC duct sizing and psychrometric calculations in a single tool. It offers detailed calculations for various duct types and materials, along with comprehensive humid air property analysis. Designed for HVAC professionals, it replaces traditional ductulators with accurate digital functionality.

Duct sizing for round, rectangular, and flexible ductsFittings pressure drop calculationPsychrometric analysis with interactive chart
πŸ”§ Utilities
(7)
free with in-app purchases