Welcome to American Solartechnics

American Solartechnics specializes in the most advanced and modern heat storage options for renewable energy heating systems today, the Heat Bank!  The highly insulated Heat Bank storage system is one of the most affordable and versatile products on the market.  We offer many different sized Heat Bank storage tanks along with heat exchangers to fit every system's needs.  Need a custom size storage tank?  We can do that as well!


We also offer custom liners for "built on site" tanks or to replace an old tank liner.  All our lining systems are dual layer high temperature thermoelastomer, which is custom run exclusively for American Solartechnics!


All of our Heat Banks are easily assembled, in an hour or less.  The largest component of our largest tank is 30" wide by 88" long by 5" deep and weighs about 15 pounds.  The versatile modular nature of the Heat Bank makes installation of large amounts of storage in tight or otherwise inaccessible space to other storage tanks a simple task for one person using a Heat Bank!

Latest News

Heat Pumps for Space Heating and Fan Convectors

We are excited to be offering heat pumps for space heating and fan convectors!


I have had two conversations recently about liner materials. Some of what I have written before bears repeating.


The first conversation was with an old friend out west who has been using a tank from a competitor (who is now out of business). They used EPDM liners and stainless steel heat exchangers in what was a very expensive tank (more than three times more than ours).


The stainless steel heat exchangers have been failing. I haven't seen pictures of the failure yet, so I cannot be positive of the cause, but I can make some good guesses. First, EPDM breaks down in hot water. When this happens, it can attack copper heat exchangers. It seems possible that it can also attack stainless steel. I have no direct experience since we do not use EPDM, but it is common knowledge that it breaks down. Hotter water accelerates the process.


Second, in tanks that heat up and cool down, you need to design for expansion and contraction - of EVERYTHING! That includes the actual tank and any hardware installed inside of it. This includes coiled heat exchangers of any material; metal, plastic, or whatever. There are a number of metal coiled heat exchangers that are solidly tied to metal support structures. This is apt to cause an abrasion failure. Any failure in a tank is a bad thing (I learned that a long time ago).


Heat exchanger failures are particularly troublesome and can be costly.


It is my experience that a properly designed stainless steel heat exchanger can outlast us. In Europe they are the standard. In Europe, they do not use EPDM liners. Maybe that is not a coincidence?


The other call this week was from a consultant who built a wooden tank. He lined it with epoxy and a spray-on rubber. And it leaks.


Here is my 2 cents worth of information on wooden DIY tanks. If you want to try to make a tank out of wood, use pressure treated wood EVERYWHERE on the tank. AND use stainless steel hardware. And use a separate liner, not a rigid one. This whole issue of expansion and contraction happens in wooden tanks, just like any other tank. A rigid, adhered liner will crack over time if the shell moves.


Somedays, you cannot ignore the laws of physics, or the biology of rot (wooden tanks rot if they get wet).

- Tom of the tanks

AST Cars

You have probably found our company because you are interested in saving energy and being efficient.


In addition to alternative heating solutions, we have been fooling around with Hybrid and Electric cars for years (possibly a delayed adolescence, but also an interest in fun technology).


Since we have been doing this for so long and have had experience with a long line (15+) of electric and hybrid vehicles, it only made sense to get a dealer license and offer some of our experience and knowledge to folks looking for affordable and efficient cars.


Most of what we offer will be hybrid vehicles. There are currently some electric cars available and we expect more soon. Some will just be cars we thought you might be interested in because we like them.


If you have a specific vehicle you are interested in and have been looking for and you don't see it on our car website, let us know! We try to only carry vehicles that are proven reliable and durable.


Consider bookmarking AST Cars and givins us a "like" on Facebook to keep up to date on our newest inventory!

AST Heat Pump Hot Water

Are you interested in using a heat pump water heater, but have been unimpressed with the cost and tricky installations?  We have a solution for you!  We are now offering an affordable DIY heat pump DHW kit that comes with a rebuilt heat pump, a 90 gallon Softank, and a stainless steel heat exchanger for domestic hot water!  This kit is easy to assemble and quick to install and operates for a mere $20 a month up here in Maine!  Interested?  Click here to learn more or contact us!

Lifetime Heat Bank Liner Warranty

Here at American Solartechnics, we take pride in our workmanship and stand behind our products 100%, which is why we are upgrading the liner warranty on our patented Heat Banks.  American Solartechnics warrantees all Heat Bank liners for life.


This is a non-transferable warranty for the lifetime of the original Heat Bank installation.  This warranty covers materials and liner workmanship only.  This warranty covers all Heat Bank liners fabricated by American Solartechnics used in conjunction with American Solartechnics heat exchangers or in installations without heat exchangers (i.e. drain back installations).  Using third party or homemade heat exchangers in a Heat Bank liner voids the warranty.  Overheating damage is not covered.  Our liners are rated at 180˚F continuous and 200˚F intermittent.  Warranty card must be filled out and submitted to AST once the liner is in service for full coverage.  Liner must be installed as per directions in your Heat Bank manual.


Any questions?  Give us a call or shoot us an email, we're here to help!

Limited Time: Photovoltaic Panels!  Only 95¢/watt!

We have 70,000 watts of Schuco photovoltaic panels for sale.  Schuco is a very high quality German manufacturer of solar equipment.  These are 245 watt panels that output from 29-36 VDC.  They are brand new, packaged two panels to a box, in their original packaging.  The panels measure approximately 39"x68".  Warrantied against DOA.


They are 95¢ a watt, so a single panel only costs $232.75!


First come, first served!  When these are gone, they are gone for good, so contact us today for more information!

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