Introduction to HVAC

The goal for a HVAC (Heating, Ventilation and Air Conditioning) system is to provide proper air flow, heating, and cooling to each room. In this process HVAC systems can provide reduce air infiltration and maintain pressure relationships between spaces.

HVAC guides
HVAC guides (heating, ventilation and air conditioning)

In HVAC Industries there are so many standard organizations such as ASHRAE, SMACNA, ACCA, Uniform Mechanical Code, International Mechanical Code, and AMCA have been established to support the industry and encourage high standards and achievement.

Sometimes HVAC Design (heating, ventilation, air conditioning) systems have been compared to a mystical science, part alchemy, part religious ritual.

Following the basic steps of HVAC System Design:

  • Design HVAC systems for people living inside buildings, not for the buildings alone.
  • You can’t fit a 24″ deep duct into a 23″ space, or, it’s the coordinated space
  • Be as fair as you can with and to all manufacturers
  • Dig deep into a given piece of equipment’s technical specs, and find nuggets of information that might save the owner and/or contractor money
  • Use nature to help your design
  • Have pity on the poor SOB’s that have to come behind you and service the system you design
  • In the end, only complaints or the lack of them matter

HVAC Process

In HVAC System, Ventilating is the process of replacing air in any space to control temperature or remove smoke, heat, dust and airborne bacteria. Ventilation includes both the exchange of air to the outside as well as circulation of air within the building.

It is one of the most important factors for maintaining acceptable indoor air quality in buildings.

There are different types of standard heating process in HVAC system design. Central heating is often used in cold climates to heat residential houses and commercial buildings. Heating can also be provided from electric, or resistance heating using a filament that becomes hot when electricity is caused to pass through it.

Air conditioning and refrigeration are provided through the removal of heat.

An air conditioning system, or a standalone air conditioner, provides cooling, ventilation, and humidity control for all or part of a house or building.

All documents, EE software and EE books are free to download.

1Handbook of PE pipe
2Fundamentals of air pollution engineering
3GeoSource Heat Pump Handbook
4Heat Exchanger and Boilers – Energy Conversion Guide
5Primer on spontaneous heating and pyrophoricity
6Recommendations for loop sizing, piping guidelines, piping arrangements
8Thermodynamics Heat Transfer and Fluid Flow Handbook
9User Guide for Desiccant Dehumidification Technology
10Danfoss – The Heating Book
11Refrigeration and air conditioning
12Control Valve Handbook
13Heating and Cooling With a Heat Pump star
14Ground-Source Heat Pump Project Analysis star
15Guide to Combined Heat and Power Systems New

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Page edited by E.C. (Google).


  1. Nhat Tran
    Jun 08, 2015

    Useful book

    Apr 27, 2015

    power saving purpose used vfd and to be connected velocity sensor

    Apr 27, 2015

    how to design cooling coil capacity and heaters capacity. if any formula is there

    Apr 27, 2015

    how to design in clea rooms.example:1000tr chiller installed .how much size in header line and and discharge line. please guide me

  5. jezehelfranca
    Aug 06, 2012

    How to apply VSD or decided to use VSD for motors in HVAC system?

  6. Dharmendra Sharma
    Dec 15, 2010

    for eduction purpose

    • prodaja
      Dec 24, 2011

      Great collection of books!

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