EDA, Incorporated

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Acronym List

Power Contacts

Thermal Hydraulics

What is Engineering?

Engineering vs Physics

Energy Contacts

Free Clip Art

Helpful Sites

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HVAC Links 

If you find an outdated link or wish to be added to our list, please drop us a note.


For free calculations go to the Calculator page.  The calculators should be used with caution.  Many of these calculators are not verified and are only intended to provide for a starting point in performing a design calculations.  All final design calculations should  be performed using verified and validated programs or calculators that have documented evidence of the verification and validation.

The following links have been reviewed and approved to be the best engineering information available on the internet, so please enjoy and if you have a better link of engineering information, email it to SiteManager@edasolutions.com .



  • ABMA - American Boiler Manufacturers Association is a national association representing the manufacturers of commercial, industrial and utility steam generating and fuel burning equipment, as well as suppliers to the industry. The primary goal of ABMA is to promote the common business interests of the boiler manufacturing industry and to promote the safe, environmentally friendly use of the products and services of its members.
  • ARI - The Air-Conditioning and Refrigeration Institute (ARI) is a voluntary, nonprofit organization comprised of the manufacturers of air conditioning, refrigeration, and heating products. More than 90 percent of the air conditioning and refrigeration machinery and components manufactured in the United States is produced by members of ARI.
  • ASHRAE - American Society of Heating, Refrigeration, and Air-Conditioning Engineers. An international organization of 50,000 persons throughout the world. The Society is organized for the sole purpose of advancing the arts and sciences of heating, ventilation, air conditioning and refrigeration for the public's benefit through research, standards writing, continuing education, and publications.
  • ASME - The premier organization for promoting the art, science, and practice of mechanical engineering throughout the world.
  • ASPE - American Society of Plumbing Engineers is the international organization for professionals skilled in the design, specification, and inspection of plumbing systems.
  • DOE - Motor Challenge - Motor Challenge Energy Savings Network. On the Motor Challenge Home Page you will find information about the program, as well as many unbiased resources to help you make informed decisions on the management and maintenance of your electric motor-driven systems.
  • DOE - Steam Challenge - The Steam Challenge program is a public-private initiative sponsored by the U.S. Dept. of Energy's Office of Industrial Technologies. The goal of Steam Challenge is to help industrial customers retrofit, maintain and operate their steam systems more efficiently and more profitably.
  • EPRI - Created by U.S. electric utilities in 1973, Electric Power Research Institute (EPRI) is one of America's oldest and largest research consortia, with some 700 members and an annual budget of about $500 million.
  • GAMA - The Gas Appliance Manufacturers Association is a national trade association whose members manufacturer appliances, components and related products used in connection with space heating, water heating, and commercial food service.
  • Hydraulic Institute - (HI section on cssinfo site) - A non-profit industry association founded in 1917, the Hydraulic Institute is dedicated to excellence in the engineering, manufacture and application of pumping equipment Today, most major pump manufacturers are active members. The mission of the Hydraulic Institute is to promote the pump industry in the United States and to enhance the effective, efficient and economic use of pump products worldwide. 
  • Hydraulic Institute -The Hydraulic Institute is the largest association of pump producers and suppliers in North America. HI serves member companies and pump users by providing product standards and forums for the exchange of industry information. HI is your source for pumps standards, books, energy reduction programs and much more. Visit HI on-line at www.pumps.org.
  • IEEE Standards is a world leader in the development and dissemination of voluntary, consensus-based industry standards involving today's leading-edge electrotechnology.
  • IGSHPA - The International Ground Source Heat Pump Association was established in 1987 to advance geothermal / ground source heat pump technology on local, state, national, and International levels.
  • MCAA - The more than 1,300 contractors that proudly call themselves members of the Mechanical Contractors Association of America are dedicated to excellence and committed to quality. MCAA members deliver construction that moves quickly and efficiently. Their jobs are problem free and safe.
  • NAOHSM - National Association of Oil Heating Service Managers. NAOHSM is the only industry association devoted exclusively to the education and advancement of oil heat service professionals.
  • New England Fuel Institute - representing over 1100 fuel oil marketers in the Northeast and adjoining regions.
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  • AEC InfoCenter - a Business Center dedicated to the Architectural, Engineering, Construction and Home Building industry. Staffed by industry professionals, the InfoCenter assembles and provides resource material relevant to your daily business. All right here, and all FREE. 
  • ARCAT - Connecting Architects and Engineers with Building Product Companies
  • BuilderWeb - dedicated to building manufacturers, building dealers, building designers and remodelers, building design software and building specialists, for the building industry.
  • Construction Materials.COM - the most comprehensive resource guide on the Web for the construction industry.
  • Cool-Links - comprehensive link site for architects, engineers, and contractors
  • HVAC Mall - a resource for people looking for Heating, Ventilating, Air Conditioning, and Refrigeration products and services. Find information from all kinds of developers and service providers who market to the HVAC/R industry.
  • HVAC Online - a uniquely useful resource for the HVAC industry. We provide electronic commerce through our Powerlink System, HVAC industry directories & links, HVAC software, A Trade Show calendar, and Web Site design and hosting services.
  • PlumbingWeb - The Premier Plumbing Links Site - dedicated strictly to the plumbing industry. From here you will find the best selection of plumbing related sites on the World Wide Web.
  • The Blue Book of Building and Construction - is the industry's leading source of regional, categorized construction information and is available in print and online. The printed directories are distributed free to qualified industry decision makers throughout the United States.
  • Thomas Register 
    Thomas Register Index - the world's largest online industrial buying source. Now, finding the product, service, or company you need is easier and faster than ever! The entire database of the acclaimed Thomas Register of American Manufacturers is available for your use online. 
  • Yahoo - Construction - HVAC
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  • R. D. Bitzer Company is a manufacturer's representative of mechanical and industrial products. We have a variety of products for hydronic, plumbing and steam systems. Our territory covers eastern Pennsylvania, southern New Jersey and northern Delaware. At R. D. Bitzer you can count on the best technical support in the industry, plus a complete inventory of products to support your needs.
  • Boone & Boone Sales Co.,Inc. is a twenty plus year old rep firm serving Oklahoka and NW Arkansas. With offices in Tulsa and OKC we have the ability to "manufacture" a pump for you in hours, should you need it, solve your system problem(s),educate your personnel or furnish most of your process, industrial or HVAC equipment needs either from stock or direct from the many manufacturers that we represent.
  • Bornquist, Inc, a manufacturer's representative in the plumbing and heating industries, offers a fine array of quality products for all levels of customers in the Chicago area, Northern and Central Illinois, Northwestern Indiana, and the Eastern counties of Iowa.
  • Boyd Engineering Co. is a manufactures' representative stocking pumps, hvac, and other related equipment for both residential and industrial applications. We cover New Mexico and El Paso Texas and its surrounding areas.
  • California Hydronics Corp has been supplying equipment to the HVAC & Plumbing trades in the Northern California and Western Nevada regions for 40 years. 
  • Cummins-Wagner - HVAC representative for the Washington D.C. / Virginia area.
  • R. L. Deppmann Company is a representative for many manufacturers in the HVAC marketplace. We represent the state of Michigan for these manufacturers. We are the leaders in education for the HVAC industry in the state of Michigan.
  • FIA's on-going commitment to satisfy our customers needs is soundly demonstrated by more than 30 years of industry leadership.
  • Gritton and Associates represents manufacturers of Hydronic Heating, Air Conditioning, and Fluid Handling Products. The company has experience in System Design and has been in business over 25 years serving the needs of the intermountain west.
  • George A. Israel Jr. - George A . Israel Jr. was founded in 1952 and serves the hydronic heating and cooling industry in Florida. Our objective is to provide customers with the best products, information and service.
  • Larry Harrington Co. has served the HVAC and industrial market for more than 65 years.  They represent the major lines in the HVAC industry, many of which are stocked in their Portland, OR warehouse.
  • Hydronic Technology Inc. - serving the commercial and industrial HVAC marketplace in Louisiana, central and southern Mississippi since 1951. We offer product and system design assistance, service and education.
  • Mangham & Assoc., Inc.- Mangham and Associates, Inc. is a Manufacturers’ Representative/Stocking Distributor covering the trading area of Alabama and Northwest Florida. We are a "systems solutions" provider of products in the HVAC and Plumbing markets.
  • Bernard J. Mulcahy Company, Inc.- is a warehouse distributor principally serving the heating, air conditioning and plumbing industries. The companies we represent manufacture a variety of products required by these industries, such as centrifugal pumps, heat exchangers, tanks, valves, instruments and numerous accessory items. Many of these same products are also applicable in industrial and process applications thus enabling us to participate in a number of diversified fields.
  • Packtor Company - Specialists in Fluid Handling since 1946. We offer fluid handling products & systems for residential, commercial, institutional, and industrial applications...
  • Sandberg Co. - Sandberg Company, a Division of Bornquist, Inc., is proud of its 50+ year tradition of quality products and service in the Quad Cities, central and northern Illinois areas.
  • Steffens-Shultz, Inc - Steffens-Shultz, Inc. is the leading manufacturers' representative in Central Ohio for the Hydronic and Steam industry. Established in 1951, our experienced and professional sales staff can design, size, select and troubleshoot Hydronic and Steam equipment/systems.
  • Oslin Nation - Manufacturers Representative serving the Dallas-Ft Worth Area For More Than Over Fifty Years. Oslin Nation's Service Dept. can Solve All of Your Pump & Motor Repair Needs.
  • James M. Pleasants Company is a manufacturers' representative serving NC, SC, and eastern TN. With more that thirty-five years experience and the representation of more than twenty additional lines, James M. Pleasants Company has the expertise and products to provide integrated Hydronic, Steam and Condensate Systems.
  • Verne Simmonds Company - manufacturers representative serving the heating, air conditioning, and plumbing markets since 1944.
  • Thermoflo - visit this valuable and entertaining HVAC and Plumbing resource. Website features industry news and articles, CAD drawings, industry newsletters, and boasts the most complete list of HVAC and Plumbing links on the internet. We provide strong technical support and training for complete system solutions. Let us serve you with our complete inventory and quick shipments. .
  • Wallace Eannace Associates maintains 2 massive, fully stocked, warehouses. We also offer fast "build -to-order" Bell & Gossett pumps from our extensive components inventory. We will work with you to analyze your total system, and determine exactly what products are required for a custom, complete, factory pre-packaged system to give optimal performance for your system.
  • FHS Homepage
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  • Air Conditioning, Heating & Refrigeration News - The magazine for Air Conditioning, Heating & Refrigeration industries.
  • Consulting-Specifying Engineer - The magazine for professional engineers who design mechanical, electrical, electronic and related systems for commercial and institutional new building and retrofit projects. It has a circulation of 47,500 and is published 13 times a year.
  • Contracting-Business Interactive - HVAC industry information.  Contains both professional and consumer sections.
  • Contractor - The Newsmagazine of Mechanical Contracting
  • Fuel Oil News - website developed for the Retail Petroleum Industry. Contains editorials, news and trends, fuel price index, and much more.
  • Energy User News - All areas of building management relating to energy-intensive building systems plus fuel and power acquisition.
  • Engineered Systems - provides practical, application-orientated information to assist facility engineers, consulting engineers, and mechanical contractors who design, specify, install, maintain, and purchase non-residential HVACR equipment and components.
  • HPAC Interactive - The website for Heating/Piping/Air Conditioning Magazine. THE place where engineers can find useful information about mechanical engineered systems for comfort and industrial process applications covering commercial, institutional, and industrial building applications.
  • Liquids Handling Magazine - unrivalled as the UK's only journal totally dedicated to fluids processing, handling, and technology.
  • Oil & Energy - the official publication of the New England Fuel Institute, is written for independent fuel oil and HVAC contractors throughout the land.
  • Plant Engineering - The magazine for industrial plant engineering professionals responsible for the maintenance and operations of plant facilities and equipment systems.
  • Plumbing & Mechanical - serves over 43,000 plumbing-heating-piping contractors.
  • PM Engineer - Provides specifying and consulting engineers with the most accurate and enlightening information to help them succeed in their technical and business endeavors.
  • Pump Zone- Pumps and Systems magazine - Dedicated to answering the needs of pump users and professionals with technical articles, software, and advice. 
  • IMPO magazine- Industrial Maintenance & Plant Operation is a monthly magazine whose readers are responsible for keeping America's industrial plants running efficiently, safely, and in compliance with environmental regulations.
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  • American Energy Exchange, Inc. - American Energy Exchange, Inc., (AEX) is an established full service manufacturer of commercial, industrial, and institutional air to air energy recovery systems specializing  in a complete  line of packaged  Ventilators, Dehumidifiers, Double Dehumidifiers and Air handlers
  • ABB
  • Aerospace Controls - Manufacturer of reliable, high quality Fuel, Hydraulic, Pneumatic and Solenoid Valves; Specialty Valve Actuators: Pressure, Temperature, Flow and Limit Switches for Commercial, Military and Aerospace Applications.
  • AC Pump - Pump manufacturer serving process, fire, general service and wastewater industries.
  • Barton - Barton has been at the cutting edge of flow measurement for the gas, oil, and process industries for more than six decades. Our differential pressure, level, flow, temperature, and pressure instruments are in use in virtually every industry and field requiring precise, reliable process measurement and control.
  • Carrier Corporation 
  • Cemline Corporation
  • Cleaver-Brooks 
  • Danfoss 
  • Dupont
  • Goulds - Since 1848, Goulds Pumps has been a leader in the manufacture and marketing of high-quality pumps for a variety applications.
  • Graham - AFD's
  • Heatway - Hydronic radiant floor heating
  • Hoffman Specialty - offers a wide range of products for the steam and hydronic systems. Each product has been designed for optimum performance in a system. With over 70 years of experience and the expertise of our sales representatives, Hoffman Specialty offers support, service, and quality products.
  • Johnson Controls
  • Kewanee - Boilers
  • McDonnell & Miller - well known for steam and hot water boiler liquid level controls. In fact, McDonnell & Miller pioneered regulation for boiler water levels and has been responsible for practically every major development in boiler level controls since 1924. Concepts in boiler control developed by McDonnell & Miller have become standard industry practice.
  • McQuay International
  • Refrigeration Technologies - manufacturer of advanced materials and applications for the HVACR industry.
  • Standard - manufacturer of heat exchangers used in industrial and process applications and in a wide range of O.E.M. cooling operations.
  • SquareD
  • Trane
  • Weil-McLain - Boilers
  • Wessels Company
  • York International Corporation
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Other Sites

  • Heating Help-Dan Holohan Associates - questions and answers about hot water heating systems, online discussions, books and more.
  • The McNally Institute - "The only Centrifugal Pump & Mechanical Seal URL you will ever need"
  • The Pump Centre - provides a unique range of services to pump users and manufacturers. The Centre is based at AEA Technologies plc's Warrington site and utilizes the expertise of engineers and scientists drawn from the UK's leading technology organizations.
  • Construction Gigs - A no nonsense employment site for the construction industry. This site is for all construction related occupations.
  • Plumbing Careers -Online source for matching skills and jobs in the plumbing and heating industry.
  • Professional hardware, DIY and industrial supplies website -A search engine specializing in hardware, tools and industrial supplies.
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Company Profile

EDA, Incorporated provides quality-engineering services on time, on schedule and within budget.  EDA, Inc. is able to do this by performing the work correctly the first time. We accept the most challenging problems and look forward to working with the client as a team member.  EDA believes that the client should be an active participant in the work process to ensure that the product is commensurate with client expectations and is delivered within schedule and budget constraints.

EDA, Inc. belongs to the American Society of Mechanical Engineers (ASME), the National Society of Professional Engineers (NSPE), the Society of Instrument Control Engineers, Society of Professional Engineers (ISA) and the American Nuclear Society (ANS).

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For more information on EDA, Incorporated services, please contact Client Service Manager at:

Client Service Manager

EDA, Inc.

6397 True Lane

Springfield, VA 22150


or email  the Client Service Manager at SiteManager@edasolutions.com .

| Home | Power Plant Design | Regulation | QA | Project Management | Financial | Oversight | Search | Feedback |  

Contact Information

Virginia Office (703) 313-9138
Postal address
6397 True Lane
          Springfield, Va 22150
Electronic mail
General Information:  Site Manager@i-edainc.com