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The National Water Well Association has discovered that the ground water source heat pump can be used for residential space healing and cooling -- and we're excited about it. We hope that many homeowners will soon begin to take advantage of the lower costs offered by our most plentiful (and often overlooked) source of energy -- groundwater. The solar energy stdred by ground water can be tapped by a ground water source heat pump to heat and cool your home, and supply hot water for domestic needs. Tb e ground water sour<^> heat pump system. Ground water has been called "nature's most efficient solar collector.'Mriladdition to the advantage of high specific heat, ground water's temperature doesn't vary with the seasons: it is warmer than air in the winter, and cooler than air in the summer. Ground water's heat Output is also / constant year-round. It occurs at temperatures from 40" to 75° F throughout most / of the continental U.S., making it ideally suited to operate a heat pump4system. I .This means it is probable you can utilize this new form of heating in your own home. Xraditional heat pump systems. Although they are now widely used, •* -- air-to-air heat pumps tyave several disadvantages when compared to ground water systems. Limited energy storage capacity i/r/)T C A 1 is the most obvious drawback of the air-to-air heat pump f ^ W system. Air's specific heat is only 0.018, so it can SUPER WAY TO I absorb and release only 1/50 of the energy 1J#. 1 w I that water can. Fifty times more air by weight must HtfJ YOUR J pass through a heat pump to produce as much M w heat as the same amount of water. nOMC* 1 Furthermore, winter air is coldest when we need heat; S* A aiA / f and summer air is warmest when we need cooling. A (jA Afw/ jr traditional back-up winter heating system may be required when temperatures drop. Air-to-air heat pump system efficiency is generally reduced during the summer months. Living in a house heated by ground water. Just what would it be like to live in a home heated and cooled by a ground water source heat pump system? First, you save money. Because its efficiency is so high, the National Water Well Association estimates that £ ground water heat pump system can pay for itself in two to four years, if you already haMfe a well. Even if you need to have a well drilled, system will pay for itself in four to eight years. Since the heat pump system's estimated lifespan is over twenty years, it yields real savings. To our knowledge, no ground water heat pump system has ever stopped running -even after more than 25 .years of service. So its lifespan may actually prove to to be far greater! Because of the way it delivers heat, the ground water heat pump system can also make your house a more pleasant place to live. A traditional system delivers hot air in cycles. When the furnace "kicks on," it blasts hot air. until the system reaches the desired temperature and cycles off. A furnace does not reach maximum efficiency until it has been running for several minutes. So most seldom reach their maximum operating/efficiency. A ground water heat pump system also operates on cycles, but it heats air V - to only 95#-10S*F, approximately 40° cooler than most conventional systems. A ground water heat pump system doesn't produce extreme temperature variations that make a room feel colcl and "drafty" while the furnace is not produicng heat. Also, air from the heat pump will not seem as dry to you, since its capacity to draw moisture is much lower. People accustomed to a ground water source heat pump often feel less comfortable in homes or buildings heated by - traditional methods. GROUND WATER'S CONSTANT YEAR OUND TEMPERATURE WILL HEAT COLD WINTER AIR AND C HOT SUMMER AIR l»A6S 41 • Announcing an economical alternative to traditional heating methods... tt .Yet another way you're. $ ahead wvfh your ownwell! Member National Water Well Association and llltlratTWater Well Association o$. H. Huemann & Sons 2020 W. Johnsburg Rood McHenry/Illinois 815-385-0414 WATER SYSTEMS SINCE 1902 Ground Water Heat Pumps