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Jay Egg

Jay's passion for geothermal air-conditioning and heating started during a repair to his own home air-conditioning system 1989. Frustrated by the extreme tropical climate which had added to the premature failure of his air-conditioning system, he modified his home air conditioner to become a ground water-cooled system. Jay founded EggGeothermal in 1990 to provide geothermal HVAC systems. As a result of the American Recovery and Reinvestment Act of 2009, EggGeothermal entered into a new age of acceptance. Jay currently focuses his professional efforts on geothermal consulting, writing, and speaking engagements. Among his clients are federal, state and local governments, developers, associations, and private entities.

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Recent Posts

Tankless Water Heating and Geothermal? The Perfect Match

Posted by Jay Egg

Sep 9, 2015 5:40:10 AM

HAVING A 50 OR 80 GALLON TANK HOT, full and waiting to provide domestic hot water (DHW) for household needs has been the norm for quite some time. Of course, we have to “suffer” through those 30 seconds or so of cold water, but we learned to deal with it.

Enter in the “tankless” water heating revolution.  Brilliant, because we no longer waste the energy of keeping a dormant tank “hot” for hours on end, and the real bonus is that we no longer have to “wait” for the hot water to hit the shower head or the faucet.

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Geothermal Heating and Cooling Book; Real Cheap, Really Good!

Posted by Jay Egg

Aug 6, 2015 12:18:00 PM

IN MY EFFORTS TO GET UNDERSTANDABLE and easy to read information into the hands of consumers about green technologies, it is refreshing to see an affordable book come out on geothermal heating and cooling technologies. The new book, “Geo Power” is just that; affordable, understandable, and richly illustrated.

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Geothermal Heat Pumps for the Kids

Posted by Jay Egg

Jun 2, 2015 7:40:00 AM

“Within your lifetime, the house you live in will probably be heated and cooled by geothermal energy.”-Geothermal Day Website


Renwable Energy; YES!   Metric Marvels; Not so much...

OLD HABITS DIE-HARD. Many of us can remember when the public school system curriculum began metric instruction.  In 1970, I was a student at Skyline Elementary in Barstow, CA.  I distinctly remember Mrs. Sims sharing the Metric System with us in 1st grade, stating that by the time we were in high school, the Old-English measurements of miles, pounds, and pints would be all but history. What happened?

I also remember the promise of electric cars, on-line shopping (they called it “TV shopping”) and solar energy; all by the time we were in high school. I’m pleased to see that even though it’s taken a bit longer (45 years later), most of those energy efficiency initiatives have become a reality. I don’t know what to say about the metric system...

One of the forms of renewable energy that is enjoying widespread acceptance (unlike the “Metric Marvels”) is geothermal; so much so that we are have remarkable interest at elementary and upper-grade level studies.  I get increasing numbers of requests from kids all over the country for information that they can use in reports and essays on geothermal heat pump (GHP) technologies.  That’s great news.

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Happy "Geo-Solar" New Year 2015!

Posted by Jay Egg

Jan 2, 2015 6:46:54 AM

Did you know that geothermal is really solar energy from our best solar collector? Well, it is!

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Where Have All the "Hot Water Generators" Gone?

Posted by Jay Egg

Nov 6, 2014 5:48:15 PM

Next to heating and cooling, a household’s second largest consumer of energy may be Domestic Hot Water (DHW) needs.


There is a device that is sometimes referred to as desuperheater, Energy Conservation Unit (ECU), or for our purposes, a “domestic hot-water generator”.  A “hot water generator” is a great way to provide domestic hot water or other hot-water needs while at the same time improving the efficiency of the heat pump to which they are connected. Desuperheaters are simple, but if misapplied, they can cause problems.

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