the present invention discloses a condenser booster device for use with an air conditioner condenser unit . the preferred embodiment allows a user to increase the efficiency of existing air conditioning units by increasing the rate of heat exchange . a condenser booster device is selectively attachable to an existing fan motor shaft in the air conditioner condenser unit . once the condenser booster device is attached , a fan motor controlling the existing fan motor shaft engages at least one supplemental fan element simultaneously with an existing condenser fan . reference is now made to the drawings , wherein like reference numerals are used to refer to like elements throughout . in the following description , for purposes of explanation , numerous specific details are set forth in order to provide a thorough understanding thereof . it may be evident , however , that the novel embodiments can be practiced without these specific details . in other instances , well known structures and devices are shown in block diagram form in order to facilitate a description thereof . the intention is to cover all modifications , equivalents , and alternatives falling within the spirit and scope of the claimed subject matter . referring initially to the drawings , fig1 and 2 illustrate a prior art air conditioner 10 comprising an air conditioner condenser unit 20 . the air conditioner condenser unit 20 typically comprises a condenser fan motor 30 , a condenser motor shaft 40 , and a condenser fan 50 . under normal usage , the condenser fan motor 30 drives the condenser motor shaft 40 which in turn causes the condenser fan 50 to rotate thereby moving a volume of air . the volume of air blows across and cools a compressed refrigerant within a condensing exchanger ( not shown ) which allows for heat exchange to occur . the greater the volume of air , the faster heat is exchanged . the invention therefore increases the efficiency of the air conditioner condenser unit 20 decreasing the run time and the cost of electricity . referring now to fig2 and 3 , a condenser booster device 100 is illustrated for use with the air conditioner condenser unit 20 . the condenser booster device 100 comprises a coupling element 102 , a shaft extension element 104 , and at least one supplemental fan element 110 . the condenser booster device 100 is typically metal in composition , though it is contemplated that the condenser booster device 100 may comprise a variety of materials , such as but not limited to steel , aluminum , metal alloys , plastic , polymers , and the like without affecting the overall scope of the invention . for example , the coupling element 102 may be steel , the shaft extension element steel shafting , and the at least one supplemental fan element 110 plastic in one embodiment . additionally , the size of the condenser booster device 100 is only limited by the size of the condenser unit 20 . in other words , the condenser booster device 100 must fit inside the housing of the condenser unit 20 . the coupling element 102 is generally rigid and connects the shaft extension element 104 to the condenser fan motor shaft 40 at a point distal to the condenser fan 50 . preferably , the coupling element 102 is a metal sleeve type coupling dimensioned to encase both the condenser fan motor shaft 40 and the shaft extension element 104 . for example , if the shaft extension element 104 is approximately ½ inches in diameter , the coupling element 104 would have an internal diameter of approximately ½ inches as well . once in place around the condenser fan motor shaft 40 and the shaft extension element 104 , the coupling element 102 may be removably secured in place with at least one attachment element , such as a set screw ( not shown ) for example . however , this is not meant as a limitation as any method of attaching and holding a coupling in place , such as but not limited by a screw , a spring , a clamp , a pin , a weld , and the like may be used without affecting the overall scope of the invention . while the shaft extension element 104 is preferably steel shafting and approximately between two and twelve inches in length , this is not meant as a limitation as any length and diameter corresponding to the condenser motor shaft 40 may be employed . similarly , the coupling element 102 would be appropriately sized to adapt to those dimensions . the shaft extension element 104 may comprise a material as discussed supra , as long as it is compatible with the coupling element 102 . a first end 106 of the shaft extension element 104 is coupled or otherwise connected to the condenser fan motor shaft 40 at a point distal to the condenser fan 50 . the coupling element 102 allows the shaft extension element 104 to effectively increase the overall length of the condenser fan motor shaft 40 . additionally , the shaft extension element 104 may further comprise a plurality of sections ( not shown ) with a plurality of additional connecting elements ( not shown ). for example , the condenser booster device 100 could have an additional condenser device ( not shown ) connected in series to a second end 108 of the shaft extension element 104 with an additional coupling element ( not shown ). as illustrated in fig2 , at least one supplemental fan element 110 is securably positionable along the length of the shaft extension element 104 at a position distal to the first end 106 of the shaft extension element 104 . for example , the at least one supplemental fan element 110 may be located approximately at the second end 108 of the shaft extension element 104 . additionally , the at least one supplemental fan element 110 is typically metal , however any material such as plastic , as discussed supra , may be used . fig3 illustrates the condenser booster device 100 further comprising a plurality of supplemental fan elements 112 configured in a series arrangement removably securable along the length of the shaft extension element 104 distal to the first end 106 of the shaft extension element 104 . preferably , the plurality of supplemental fan elements 112 comprises a first supplemental fan element 114 and a second supplemental fan element 120 that may rotate at substantially the same speed . however , this is not meant as a limitation as the plurality of supplemental fan elements 112 may comprise any number that may fit within the dimensions of the condenser unit 20 . the plurality of supplemental fan elements 112 are typically smaller in diameter than the condenser fan 50 diameter from blade tip to blade tip , however , an embodiment where one of more of the plurality of supplemental fan elements 112 have the same diameter as the condenser fan 50 is considered to be within the scope of the invention . similarly the plurality of supplemental fan elements 112 may have identical or different diameters . the plurality of supplemental fan elements 112 are typically between approximately eight and fifteen inches in diameter , however this is not meant as a limitation as applications may utilize diameters from four to thirty inches depending on the size of the condenser fan 50 . in the preferred embodiment , the first supplemental fan element 112 is securable to the shaft extension element 104 more proximally to the coupling element 102 than the second supplemental fan element 120 . additionally , the second supplemental fan element 120 is preferably smaller in diameter that the first supplemental fan element 114 . in other words , the first supplemental fan element 114 is typically of a smaller diameter than the condenser fan 50 , but of a larger diameter than the second supplemental fan element 120 . however , as discussed supra , this is not meant as a limitation as the diameters of the first supplemental fan element 114 and the second supplemental fan element 120 may be approximately the same diameter as desired . the at least one supplemental fan element 110 comprises a plurality of blades typically between two and twelve in number , although any number may be employed . in the preferred embodiment , the first supplemental fan element 114 comprises a plurality of first supplemental fan element fan blades 116 , and the second supplemental fan element 120 comprises a plurality of second supplemental fan element fan blades 122 . the plurality of first supplemental fan element fan blades 116 and the plurality of second supplemental fan element fan blades 122 typically have a pitch of approximately 32 degrees , although the pitch may range from 20 to 40 degrees and remain within the scope of the invention . the first supplemental fan element 114 and the second supplemental fan element 120 are removably secured to the shaft extension element 104 with a first securing element 118 and a second securing element 124 respectively . the first and second securing elements 118 and 124 typically comprise at least one set screw , however any method of attachment known to one of skill in the art , including but not limited to screws , pins , bolts , welds , compression hardware , and the like may be used without affecting the overall scope of the invention . additionally , the first supplemental fan element 114 and the second supplemental fan element 120 may be secured with plurality of first supplemental fan element fan blades 116 and the plurality of second supplemental fan element fan blades 122 either aligned or in a staggered arrangement . what has been described above includes examples of the disclosed device . it is , of course , not possible to describe every conceivable combination of components and / or methodologies , but one of ordinary skill in the art may recognize that many further combinations and permutations are possible . accordingly , the novel device is intended to embrace all such alterations , modifications and variations that fall within the spirit and scope of the appended claims . furthermore , to the extent that the term “ includes ” is used in either the detailed description or the claims , such term is intended to be inclusive in a manner similar to the term “ comprising ” as “ comprising ” is interpreted when employed as a transitional word in a claim .