Best CoolCalc alternatives: apps like CoolCalc - HVAC Tools

10+ similar apps compared and reviewed

4.0 avg rating
10 free apps
Updated October 2026

CoolCalc is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to CoolCalc

HVAC Load Calculator Manual J#3

HVAC Load Calculator Manual J by Mike Watson

BTU Sizing for Contractors
Worth Considering
🔧 Utilities
4.8(41 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
HVAC Load Calculator Manual J screenshot 6

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.

More apps like CoolCalc

4
Refrigerant Charge Calculator
Refrigerant Charge Calculator
Refrigerant Charge Calculator
HVACR Check PT Chart Superheat
Free

This tool helps HVAC and refrigeration technicians quickly determine the correct refrigerant charge for various systems. It provides instant verdicts like 'Add,' 'Hold,' or 'Remove' based on superheat or subcooling measurements, supporting numerous refrigerants and unit conversions. The app functions offline and allows for saving job details and generating PDF reports.

Charge check by superheatCharge check by subcoolingLine-set charge estimation
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(24)
free with in-app purchases
5
InspectorIQ
InspectorIQ
InspectorIQ
Scan. Decode. Inspect.
Free

Instantly identify HVAC and water heater equipment using your camera. This tool decodes serial numbers, offers AI-powered guidance for repairs, and suggests local professionals, saving you valuable time in the field.

Camera-based serial number captureHVAC serial number decodingWater heater serial number decoding
🔧 Utilities
(6)
subscription
6
Ruud
Ruud
Ruud
Connect . Install . Service
Free

This app streamlines HVAC installation, service, and support for contractors. It offers Bluetooth connectivity for system setup and troubleshooting, along with access to product information, warranty tracking, and dealer locators.

Bluetooth setup and troubleshootingSystem operating parameter monitoringAlarm diagnosis and history
🔧 Utilities
(1.1K)
free
7
Bryant® Service Technician
Bryant® Service Technician
Bryant® Service Technician
by Bryant Heating & Cooling
Free

This app helps HVAC/R technicians identify and source the correct parts for repairs, whether for warranty or non-warranty work on any brand. It offers tools for troubleshooting, calculating system capacity, and locating nearby parts centers.

AI-powered technical assistanceSystem capacity calculationIntelligent equipment search
🔧 Utilities
(38)
free
8
LGMV-Business
LGMV-Business
LGMV-Business
by LG Electronics, Inc.
Free

This application allows air conditioning service engineers to monitor LG air conditioner product status, diagnose issues, and interpret refrigeration cycles. It provides real-time data, graphical representations, and troubleshooting guides to assist in problem-solving.

Monitor air conditioner statusView pressure and frequency graphsControl indoor unit operation
🔧 Utilities
(25)
free
9
Bluon HVAC
Bluon HVAC
Bluon HVAC
HVAC Tools
Free

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.

500,000+ HVAC unit databaseManuals and part listsAI troubleshooting tool (MasterMechanic)
🔧 Utilities
(4.5K)
ad-supported
10
Carrier® Service Technician
Carrier® Service Technician
Carrier® Service Technician
by Carrier Corporation
Free

This app helps HVAC/R technicians quickly identify and locate necessary parts for repairs on any equipment, whether for warranty or non-warranty services. It offers advanced tools for troubleshooting, system calculations, and accessing technical documentation, all from the job site.

AI Assistant for troubleshootingSystem Capacity CalculatorIntelligent Equipment Search
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(108)
free