Best Engineering Calculator Hvac Apps

222+ iOS apps curated and reviewed

4.5 avg rating
18 free apps
Updated June 2026

With an average user rating of 4.5★, the engineering calculator hvac category is one of the App Store's strongest. Browse all 222+ apps we track, sorted so the most loved ones surface first.

Top Picks for Engineering Calculator Hvac

Calculator for iPad₊#2

Calculator for iPad₊ by Impala Studios B.V.

Basic, Scientific, Plus Calc
Strong Contender
🔧 Utilities
4.5😞(126K ratings)
FreeAdsIn-App Purchases
Calculator for iPad₊ screenshot 1
Calculator for iPad₊ screenshot 2
Calculator for iPad₊ screenshot 3
Calculator for iPad₊ screenshot 4
Calculator for iPad₊ screenshot 5

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.

What We Love

  • 🚀 Helpful for math calculations
  • 👍 Variety of functions beyond basic calculator
  • 👍 Useful for students and teachers

Room to Improve

  • 🙄 Excessive ads and pop-ups
  • 💰 Expensive subscription to remove ads
  • 🐛 Occasional calculation errors
Bluon HVAC#3

Bluon HVAC by Bluon, Inc.

HVAC Tools
Worth Considering
🔧 Utilities
4.8😐(4.4K ratings)
FreeAds
Bluon HVAC screenshot 1
Bluon HVAC screenshot 2
Bluon HVAC screenshot 3
Bluon HVAC screenshot 4
Bluon HVAC screenshot 5
Bluon HVAC screenshot 6

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

More Engineering Calculator Hvac apps to explore

4
HVACR Check & Charge
HVACR Check & Charge
HVACR Check & Charge
PT Charts Superheat Subcooling
Free

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.

Instant refrigerant charge calculatorSuperheat calculator (non-TXV)Subcooling calculator (TXV)
🔍 Reference
(17K)
free
5
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
🔧 Utilities
(39K)
free with in-app purchases
6
PCalc Lite
PCalc Lite
PCalc Lite
The Best Calculator
Free

This free scientific calculator offers essential features like RPN mode, unit conversions, and multiple undo/redo. It provides a taste of a more powerful version, with optional in-app purchases for expanded functionality.

Optional RPN modeMultiple undo and redoUnit conversions and constants
🔧 Utilities
(213)
free with in-app purchases
7
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
📚 Education
(93)
subscription
8
Calculator⁼
Calculator⁼
Calculator⁼
Fraction, Scientific Calc +
Free

This app offers a clean and intuitive interface for both basic arithmetic and advanced scientific calculations. It includes a history tape to review past computations and supports various mathematical operations, making it suitable for everyday use and complex problem-solving.

Basic & Scientific CalculatorLive Currency ConverterHistory Tape
🔧 Utilities
(357K)
free with in-app purchases
9
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
10
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
📚 Education
(19)
free with in-app purchases
11
PCalc
PCalc
PCalc
The Best Calculator
$9.99

A powerful calculator designed for professionals and students, offering advanced features like RPN mode, multi-line display, and extensive unit conversions. It supports various number systems and includes an Apple Watch app for on-the-go calculations.

Optional RPN modeMulti-line displayExtensive unit conversions
🔧 Utilities
(758)
free with in-app purchases
12
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
📊 Productivity
(5)
paid
13
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
🔧 Utilities
(7)
free with in-app purchases
14
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
📊 Productivity
(8)
free
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
🔧 Utilities
(268)
ad-supported
16
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
🔧 Utilities
(384)
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
📊 Productivity
(14)
ad-supported
18
Refrigerant Charge Calculator
Refrigerant Charge Calculator
Refrigerant Charge Calculator
HVACR Check PT Chart Superheat
Free
🔧 Utilities
(0)
19
Engineering Cookbook
Engineering Cookbook
Engineering Cookbook
by Loren Cook Company
Free

A handy reference guide for mechanical designers, offering quick access to essential information on fan basics, system and duct design, motors, heating, refrigeration, and conversion factors.

Fan BasicsSystem DesignDuct Design
🔍 Reference
(6)
free
20
Dry Tools
Dry Tools
Dry Tools
Tools for HVAC professionals
Free

This app provides HVAC professionals and students with essential calculation tools, including air stream mixing, HVAC formulas, lead time planning, and a psychrometric calculator with weather data. It also offers educational content and industry-specific terminology.

Air Stream Mixing CalculatorHVAC FormulasLead Time Wheel
💼 Business
(5)
free