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  • #: 241355
  • Price: $1.99 In Apple Store
  • Category: Reference
  • Updated: 2017-03-07
  • Current Version: 3.8
  • 3.8
  • Size: 6.90 MB
  • Language: English
  • Seller: Emad Attia
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.0 or later
  • © FPC Ltd.
  •  Add to Favorite apps



The ultimate HVAC reference for all HVAC professionals and engineers. This app includes 100s of equations and tables for heating, ventilation, air conditioning and noise.

A summary of the contents (more is included in the app).

- Air Conditioning tables and equations for:

Air Conditioners

Ammonia - NH3 - Properties

Cooling Loads

Chilled-Water System

Cooling and Heating Equations

Freon Properties

Fruits and Vegetables Optimal Storage Conditions

Heat Gain


Air Humidity

Rectangular and Circular HVAC Ducts

Refrigerant R22 - Properties

Refrigerants - Environmental Properties

Sensible Heat Ratio

Thermodynamic Properties of Refrigerant - R22

Water Evaporator and Condenser Equations

- Heating tables and equations for:

Air Heating Systems

Building Elements

Expansion Tanks

Chimneys and Fireplace Sizing

Classifications of Coal, Gas Oil, Boilers and Hot Water Heating Systems

Dowtherm A


Flow Rates in Heating Systems

Flow Temperatures in Hot-Water Heating Systems

Food and Foodstuff

Greenhouse Temperatures

Heat Carrying Capacity of Copper Tube

Heat Emission

Heat Loss

Heat Sources

Hot Water Heating Systems

Overall Heat Transfer Coefficients

Safety Valves

Sizing Swimming Pool Heaters

Snow Melting Systems

Static Pressures in HVAC Systems

Thermal Expansion

Units of Heat - BTU, Calorie and Joule

- Ventilation tables and equations for:




Friction Loss

Heat Recovery

Heaters and Coolers

Hydraulic Diameter

Major and Minor Losses


Scrubber Basics

Duct Sizing


- Noise/Sound tables and equations for:


Blade Dampers and Pass Frequency


Decibel A, B and C

Directivity Coefficient and Sound Attenuation


Fans and Noise Power Generation

Noise Attenuation and Rating Curves

Outdoor Ambient Sound Levels

Propagation of Sound Indoors

Propagation of Sound Outdoors

Rotary Heat Exchanger - Noise Attenuation

Sound Absorption Coefficients for some common Materials

Sound Attenuation

Sound Frequency, Wavelength and Octave

Sound Power, Intensity and Pressure

Sound Transmission

* All Content is Searchable

* All Content is available offline (no need for WiFi or Internet Connection)

* Please send us any questions, comments or suggestions using our website

What's New in Version 3.8

- Minor updates

iPhone Screenshots

HVAC iPhone Screenshot 1
HVAC iPhone Screenshot 2
HVAC iPhone Screenshot 3
HVAC iPhone Screenshot 4

Video Reviews

No video review.

Customer reviews

Write a Review

Rated 3/5 based on 3 customer reviews.


4/5 stars

Good for a quick reference

This all does not calculate anything it is just a reference guide. It's a very good reference and rule of thumb guide with lots of useful equations. The only thing I would add is where the equations and data come from. It looks ASHRAE based but not sure if it is

5/5 stars


There seems to be an app for everything stupid, and these guys actually put together some incredibly useful resources with this one. HIGHLY RECOMMENDED, though because I run a building diagnostics firm I upgraded to the Pro version. Can't beat 99 cents though. Buy it.

0/5 stars


.99 was way too much !! Nothing I need here !!!


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The information may be outdated (2017-03-08 21:24:28). For actual information go to iTunes

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