Best Hvac Calculator Heat Apps

216+ iOS apps curated and reviewed

4.2 avg rating
17 free apps
Updated June 2026

Looking for free hvac calculator heat apps? 17 of our 216+ tracked titles are free to download β€” no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Hvac Calculator Heat

Bluon HVAC#1

Bluon HVAC by Bluon, Inc.

HVAC Tools
Editor's Choice
πŸ”§ 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

  • 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
Heating & Cooling HVAC Pro+#2

Heating & Cooling HVAC Pro+ by Watsco, Inc.

HVAC Tools
Strong Contender
πŸ“Š Productivity
4.7(42 ratings)
FreeAds
Heating & Cooling HVAC Pro+ screenshot 1
Heating & Cooling HVAC Pro+ screenshot 2
Heating & Cooling HVAC Pro+ screenshot 3
Heating & Cooling HVAC Pro+ screenshot 4
Heating & Cooling HVAC Pro+ screenshot 5
Heating & Cooling HVAC Pro+ screenshot 6

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.

More Hvac Calculator Heat 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)
πŸ” Reference
(17K)
free
5
HVAC Load Calculator Manual J
HVAC Load Calculator Manual J
HVAC Load Calculator Manual J
BTU Sizing for Contractors
Free
$1.99 | 100% OFF

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.

Multiple accuracy levels (Simple, Moderate, Pro)Offline-ready calculationsProfessional PDF report generation
πŸ”§ Utilities
(28)
free with in-app purchases
6
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
7
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
8
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
9
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
10
CoolCloud HVAC 2.0
CoolCloud HVAC 2.0
CoolCloud HVAC 2.0
HVAC Service Streamlined
Free

This application enables HVAC contractors to wirelessly connect with Goodman and Amana air handler and furnace control boards via Bluetooth. It streamlines equipment servicing, maintenance, configuration, and diagnostics for improved energy efficiency and performance.

Bluetooth connectivityEquipment configurationStatus monitoring
πŸ’Ό Business
(17)
free
11
HVAC Calculator Load Pro
HVAC Calculator Load Pro
HVAC Calculator Load Pro
Built for HVAC Specialists
Free
$12.99 | 100% OFF

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.

Fast HVAC BTU calculationsResidential furnace & AC sizingClimate-aware calculations
πŸ“Š Productivity
(1)
free with in-app purchases
12
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
13
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
14
Pipe Heat Loss
Pipe Heat Loss
Pipe Heat Loss
Pipe insulation calculator
Free
πŸ”§ Utilities
(0)
15
AC Calculator Pro
AC Calculator Pro
AC Calculator Pro
Air Conditioner or Heat Pump
$4.99

This app assists HVAC professionals and homeowners with air conditioning and heat pump sizing. It provides detailed calculations for cooling/heating capacity, recommends equipment types, and offers unit equivalences and price estimates.

Commercial Capacity Calculations (BTU/h)Recommended Equipment TypesUnit Equivalences (BTU, kW, Kcal, Tons)
πŸ“Š Productivity
(1)
paid
16
OSHA-NIOSH Heat Safety Tool
OSHA-NIOSH Heat Safety Tool
OSHA-NIOSH Heat Safety Tool
by Centers for Disease Control and Prevention
Free

This tool helps outdoor workers stay safe by providing real-time heat index information and hourly forecasts specific to their location. It offers occupational safety recommendations and details on heat-related illnesses and their first aid.

Real-time heat index and risk levelsHourly heat index forecastOccupational safety recommendations
β˜€οΈ Weather
(292)
free
17
Refrigerant Charge Calculator
Refrigerant Charge Calculator
Refrigerant Charge Calculator
HVACR Check PT Chart Superheat
Free
πŸ”§ Utilities
(0)
18
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
19
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
20
Bromic Smart-Heat
Bromic Smart-Heat
Bromic Smart-Heat
Superior Design and Heat.
Free

Control your Bromic heaters remotely via Bluetooth or Wi-Fi. Create heating zones, schedule custom scenes, and set timers for convenience. Monitor usage and costs for efficient operation.

Remote heater control (Bluetooth/Wi-Fi)Zone creation for multiple heatersCustomizable heating scenes
πŸ”§ Utilities
(9)
free