HI TECH CONSTRUCTION PRODUCTS -EARTHLINKED SYSTEM

• higher profit than other heat pumps because it is a proprietary, value-added product
• greater operating cost savings accelerate cost recovery
• easier, quicker installation than water source Geo systems
• lower installed cost potential gives opportunity for quicker cost recovery than
water source Geo systems
• no purging or plastic fusing and no special tools or equipment needed
• 85% smaller vertical bore and trenching requirement than water source Geo
systems
• size and weight of unit is less than one-half of water source Geo units
• greater reliability and fewer call-backs result from mechanical simplicity and ECR
Refrigerant Controls
• Refrigerant Controls assure easier refrigerant charging and service by viewing sight
glass without need for thermometer or charging charts; and checking refrigerant
charge during servicing does not require gauges (gauges are used only on first A/C
operation)
• more options with vertical, horizontal or diagonal earth loops (for lowest cost
alternative to meet site conditions); water heating options; and location of unit in
basement, utility room or outside earth loops are pre-assembled and can be
shipped to site in 34" coil on pallet with unit
• quieter operation and greater comfort from constant earth temperature source and
no defrost cycle
• 75% reliance on renewable energy results in conservation of natural resources and
clean air and water
• environmental friendliness creates pride in consumers and dealer
• cleaner indoor air results from greater filtration during longer run cycles, and no
combustion
• happy customers provide word-of-mouth advertising

Advantages to Dealers and Installers
Dealers who have installed a traditional closed-loop GeoExchange System know how difficult and expensive installing the large plastic intermediate earth loop and the related flow center can be. Geo-Direct loops are easier to install because they use a much smaller bore hole and less excavation than water-based systems. Therefore, smaller and more maneuverable drilling equipment can be used.

Factory Assembly Makes Installation Simpler
Because Geo-Direct® needs no intermediate loop, the installer needs no plastic loop fusing tools, pumps to add antifreeze or training to assemble the loop. Geo-Direct loops are factory assembled. The unit weighs one-third that of a closed-loop system or high efficiency air source heat pump.

Advantages Over "High-Efficiency" Air Source Heat Pumps

• Highest average COP (heating) and EER (coding) efficiency ratings.
• Saves from 40 to 60% in operating costs on an annual basis.
• Increases comfort by efficiently using the favorable earth heat source to provide
100°F supply air.
• Does not lose efficiency as ambient air temperature drops.
• Can be located in a utility room or basement because of no need to circulate air
over an exterior coil.
• Quiet operation resulting from total system enclosure and elimination of exterior
fan and motor.
• Exterior condenser/evaporator unit is buried out of sight, protected from
damage, theft and weather.
• Approximately one-half the size and weight of a typical air source heat pump unit.
• Not subject to freezing; no defrost cycle required; no supplemental heat required.
• Eliminates the exterior coil, fan, fan motor and capacitor, defrost timer, and
ancillary wiring, making it mechanically and electrically simpler.
• Has greatly improved reliability and service life because of its simplicity and stable
   temperature source.
• Achieves high efficiency without having to utilize variable speed compressors or
   multi-speed fans.
• Extends compressor life by reducing compressor wear caused by temperature
fluctuations in ambient air and by preventing liquid refrigerant from reaching the
compressor.
• Energy demand charge reduction, where applicable.

Advantages Over Water Source Closed-Loop Geo Systems

• More efficient operation of the compressor, evaporator, and condenser with
Geo-Direct Refrigerant Flow Controls.
• Eliminates intermediate closed-loop plastic piping system (which must be
purchased in parts, assembled on-site, installed, filled with antifreeze and water,
and pumped constantly while system is operating.)
• Continues to operate even when evaporator surface (earth loop) is enveloped in
   ice.
• Mechanically simpler and more reliable; easier to service.
• Utilizes bore holes 3" in diameter in contrast to 6" bore holes.
• Lower installation costs can result from smaller, shorter bore holes; less loop per
ton; and less grout.
• Unique optional capability of water pre-heating "on demand" during any season, or
as a "desuperheater".

Geo-Direct®Advantages Over Other Direct GeoExchange Systems

• Provides more efficient operation of the compressor, evaporator and condenser
with Geo-Direct refrigerant flow controls.
• Allows for more earth loop installation options, including shorter vertical, diagonal
and horizontal loops, which are applicable to more new construction and
retrofitting opportunities.
• System capacity and performance ratings are given for specific geographic area.
• Has the unique option of water heating full-time, water pre-heating during any
season, or by utilizing a desuperheater.

Geo-Direct® offers the most energy efficient means of heating and cooling building in most areas. Transferring renewable energy reduces cooling costs an average of 30% as compared to a 10 SEER air conditioner, and heating costs by 75% as compared to electric heat. Geo-Direct® water preheating is four times as efficient as electric resistance water heating.

It can reduce annual energy consumption over 40% compared to air source heat pumps, and as much as 70% measured against standard air conditioner with electric resistance heating, and 20% compared to conventional geothermal units.

Advantages to Home and Building Owners

Geo-Direct® yields many advantages over air source heat pumps, closed-loop GeoExchange systems and other direct GeoExchange systems.