Engineer In A Pocket

Engineer In A Pocket
Energy Software for HVAC Contractors
EIP Calculators

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About Us

Our mission is to bridge the gap between energy analysis and implementation of energy efficiency measures. When we take advantage of cost effective energy efficiency opportunities, we benefit individuals, businesses, our nation and the environment. More

Marcia Karr, P.E.

Marcia Karr P.E. is a mechanical engineer with over 30 years of experience in commercial building design, construction, and maintenance and as a building codes plans examiner. She is a registered Professional Engineer in Washington and Oregon and is a licensed Commercial Buildings Energy Code (NREC) Plans Examiner. (Resume)

Marcia's range of experience lends perspective in designing calculation tools that meet the needs of HVAC contractors. She has worked as a commercial sector plan and spec engineer, as a construction project manager and later as a trade supervisor with a crew of 40 people from all the trades maintaining and operating buildings. She inspected job site conditions, bid the jobs, designed the systems, obtained permits and supported her construction team to close out.

As the sole mechanical and energy plans examiner for the City of Portland, she saw every engineer's work in her jurisdiction and supported the construction sector in doing good designs for their customers. Marcia often provided these contractors with calculations to show energy savings for upgrades to their current direction.

In these years of experience, Marcia recognized the need for a software tool intended for contractors and building owners for performing site-specific energy analyses of commercial buildings without the expense of building energy modeling.

Carolyn Roos, Ph.D.

Carolyn Roos is a mechanical engineer with over 25 years of experience in industrial and building systems energy efficiency, specializing in the development of Excel-based applications for engineers and contractors. She provides technical assistance on commercial and industrial energy system efficiency and renewable energy projects. She also provides technical support to the U.S. DOE Northwest Combined Heat and Power Technical Assistance Partnership, focusing on CHP, biopower and waste heat to power applications. She previously worked as an energy management engineer at Puget Sound Energy, where she performed energy efficiency analyses for commercial and industrial customers, and at the Army Corps of Engineers Hydroelectric Design Center. (Resume)

Articles by Marcia Karr, P.E.

In Engineered Systems Magazine:

Why would a hospital consider an absorption chiller?"
November 2016

VRF Heat Pumps in the Real World
Sept 2013

Variable Refrigerant Flow vs. Building Codes
June 2014

VRF Is Evolving
Feb 2015

So You Have a Boiler
June 2015

Combined Heat & Power Really Is The Answer
Oct 2015

Absorption Chillers for Institutional Occupancies
Feb 2016

Data Centers & Ab/Adsorption Chillers
April 2016

Emergency Generators in Hospitals
July 2016







Efficiency matters...

When we take advantage of cost effective energy efficiency opportunities in businesses, government and households across the country, hundreds of billions of dollars would be saved on energy costs over the next 10 to 15 years and dozens of new power plants would be avoided or delayed. Improving energy efficiency creates a downward pressure on energy prices and increases our energy security and independence. Energy efficiency protects the environment by reducing greenhouse gas emissions and by reducing the water use associated with electricity generation. Energy efficiency creates jobs and boosts local economies. Businesses save money on their energy bills, while increasing the comfort and productivity of their employees. Despite the benefits, many cost effective energy conservation opportunities are not implemented because financial benefits are not made clear to building owners and managers.

Our goal with the EIP is to bridge the gap between energy analysis and implementation to help achieve these benefits. Tools such as the EIP give those on the ground -- the contractors who implement projects -- the resources they need to make the case.

To learn more about the benefits of energy efficiency...

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