Best Blue Cold Heat Load Calculator Apps

195+ iOS apps curated and reviewed

4.5 avg rating
19 free apps
Updated May 2026

If you already know Blue Cold Heat Load Calculator, this is the deeper bench. 195+ blue cold heat load calculator apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of May 2026.

Top Picks for Blue Cold Heat Load Calculator

HVAC Load Calculator Manual J#2

HVAC Load Calculator Manual J by Mike Watson

BTU Sizing for Contractors
Strong Contender
🔧 Utilities
4.7(28 ratings)
FreeIn-App Purchases
HVAC Load Calculator Manual J screenshot 1
HVAC Load Calculator Manual J screenshot 2
HVAC Load Calculator Manual J screenshot 3
HVAC Load Calculator Manual J screenshot 4
HVAC Load Calculator Manual J screenshot 5

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.

Duct Calculator - DuctCalc#3

Duct Calculator - DuctCalc by Mikhail Nikitin

HVAC Sizing & Psychrometric
Worth Considering
🔧 Utilities
5.0(7 ratings)
FreeIn-App Purchases
Duct Calculator - DuctCalc screenshot 1
Duct Calculator - DuctCalc screenshot 2
Duct Calculator - DuctCalc screenshot 3
Duct Calculator - DuctCalc screenshot 4
Duct Calculator - DuctCalc screenshot 5
Duct Calculator - DuctCalc screenshot 6

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.

More Blue Cold Heat Load Calculator apps to explore

4
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 24°C and 30-50% humidityConsider space, occupants, window R-value
🔧 Utilities
(288)
free with in-app purchases
5
AirPro: BTU Calculator
AirPro: BTU Calculator
AirPro: BTU Calculator
HVAC Calculator: House Heating
Free

This tool helps you calculate the right size for air conditioners, heat pumps, and furnaces. It provides detailed analysis of heating and cooling costs, energy consumption, and temperature data. You can also evaluate domestic hot water needs and financial aspects like payback periods.

BTU estimation for HVAC systemsMonthly heating and cooling cost calculationEnergy consumption and temperature analysis
📊 Productivity
(5)
free with in-app purchases
6
BTU Calculator - Air Conditioner
BTU Calculator - Air Conditioner
BTU Calculator - Air Conditioner
by Queen Mob
Free

This utility helps you determine the appropriate cooling capacity for an air conditioner based on room size and other factors. It simplifies the process of selecting the right unit to ensure optimal comfort and energy efficiency.

BTU calculationAir conditioner sizingRoom dimension input
🔧 Utilities
(5)
free
7
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
📊 Productivity
(1)
free with in-app purchases
8
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
9
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
10
Cold Room Calculator
Cold Room Calculator
Cold Room Calculator
by LU-VE S.p.A.
Free

This tool quickly calculates the necessary cooling capacity for cold rooms. It allows users to input temperature, dimensions, insulation, heat loss, and product data to generate instant calculations. Results can be emailed for easy sharing.

Calculate cooling capacityInput temperature dataEnter cold room dimensions
💼 Business
(3)
free
11
Cr Calc – Cold Room Calculator
Cr Calc – Cold Room Calculator
Cr Calc – Cold Room Calculator
by Anatoliy Gershman
Free

This app assists in calculating heat gain for cold rooms, supporting various heat sources and construction materials. It offers project organization and in-app help, with an optional subscription for PDF export.

On-the-fly calculationsMultiple heat gain typesExtensive material selection
🔧 Utilities
(2)
freemium
12
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
☀️ Weather
(292)
free
13
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
🔍 Reference
(51)
free
14
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
💼 Business
(3)
paid
15
IN HVAC Calculator
IN HVAC Calculator
IN HVAC Calculator
HVAC Calculator & Reference
Free

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.

Equipment circuit requirements calculatorAC tonnage estimation by model numberHVAC manufacture date lookup
🔧 Utilities
(11)
free
16
Bar Is Loaded - Gym Calculator
Bar Is Loaded - Gym Calculator
Bar Is Loaded - Gym Calculator
It's leg day, not brain day.
Free

This app simplifies weightlifting calculations, instantly determining the correct plates to load onto a barbell. It offers custom settings for inventory and a reverse calculator, along with tools for meet preparation and performance scoring.

Plate loading calculator (KG/LB)Customizable barbell and plate inventoryReverse calculator for adding plates
💪 Health & Fitness
(251)
free with in-app purchases
17
Heat Safety
Heat Safety
Heat Safety
Heat Conditions and Forecasts
Free

This tool helps prevent heat-related illnesses for outdoor workers by providing heat index and wet bulb temperature data. It offers current conditions and forecasts for US locations, using standardized risk level categorizations to help plan work activities and ensure safety.

Heat index and wet bulb temperatureCurrent conditions and forecastsOSHA-NIOSH and US Army risk levels
☀️ Weather
(1.8K)
free with in-app purchases
18
Fahrenheit Celsius Calculator
Fahrenheit Celsius Calculator
Fahrenheit Celsius Calculator
Meeting Your Conversion Needs
Free

Easily convert temperatures between Fahrenheit and Celsius. Access current, historical, and forecasted weather data for any city in both units simultaneously.

Fahrenheit to Celsius conversionCelsius to Fahrenheit conversionCity temperature lookup
🔧 Utilities
(1.6K)
free with in-app purchases
19
Heat Index Calculator Pro
Heat Index Calculator Pro
Heat Index Calculator Pro
Calculate heat index
Free

Instantly determine how hot it truly feels by combining temperature and humidity. This app provides real-time weather data, forecasts, and heat risk warnings to help you plan outdoor activities safely and avoid heat-related illnesses.

Accurate Heat Index CalculatorReal Time Weather Data3 Hour Heat Forecast
☀️ Weather
(52)
free
20
Unravel: Steel Calculator
Unravel: Steel Calculator
Unravel: Steel Calculator
by Majestic Steel USA
Free

This app simplifies complex steel calculations for flat-rolled steel buyers. It helps verify coil and sheet specifications, calculate weights without a scale, convert units, and compare prices. It supports various steel types for accurate cost and yield calculations.

Calculate coil and bundle weightVerify steel specificationsConvert gauges to decimals
🔧 Utilities
(10)
ad-supported