Grid Sq
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 PLEATCO DE GRID POOL GRIDS 48 SQ FT FOR HAYWARD DE FILTERS SET OF 8 KIT  US $105.90
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 Pleatco 48 sqft Swimming Pool Universal DE Replacement Pool Filter Grid Set US $99.99
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 FILBUR DE GRID POOL GRIDS 48 SQ FT FOR HAYWARD PLEATCO DE FILTERS SET OF 8 KIT US $104.99
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 Hayward 48 SQ FT Pro Grid Inground Swimming Pool DE Filter DE4820 US $625.00
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 Hayward 60 SQ FT Pro Grid Inground Swimming Pool DE Filter DE6020 US $714.99
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 48 Sq Ft Hayward Pentair Replacement DE Filter Grid Set Top Manifold US $109.50
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 Pleatco 60 sqft Swimming Pool Universal DE Replacement Pool Filter Grid Set US $142.00
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 7 UNICEL FG 1003 DE Replacement Filter Full Grid 36 Sq Ft 7 Required FG1003 US $84.95
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 Pentair Hayward Pac Fab 60 Sq Ft DE Filter Grid Set US $144.99
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 Hayward DE3620 36 sq ft De Filter Grid Set 8 Grids US $89.99
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 Hayward Pro Grid DE Grids Set for 60 sq ft DE Filter US $129.99
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 60 Sq Ft DE Filter Grid Complete Set of 8 Grids US $129.99
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 FNS Plus DE Grid Set for 60 sq ft Pool DE Filter US $129.99
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 New Hayward Pentair FC 9350 FG 1005 DE Filter 30 Full 60 SqFt Replacement Grid US $29.95
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 Pleatco Swimming Pool 48 Sq Ft DE Filter Grid Set For Hayward Pentair Filters US $103.99
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 Pleatco Swimming Pool 36 Sq Ft DE Filter Grid Set For Hayward Pentair Filters US $91.99
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 HAYWARD DE4820 Pro Grid Inground Pool Filter 48 Sq Ft US $669.95
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 8 UNICEL FG 1005 DE Filters Full Grid 60 Sq Ft 30 7 Required FG1005 FC 9350 US $132.95
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 Pleatco 36 sqft Swimming Pool Universal DE Replacement Pool Filter Grid Set US $93.00
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 New Hayward Pentair FC 9230 FG 1236 DE Filter 18 Full 36 SqFt Replacement Grid US $19.95
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 PLEATCO POOL DE GRID FOR HAYWARD PENTAIR SET OF 8 48 SQ FT DE FILTERS GRIDS US $112.75
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 New Hayward Pentair FC 9250 FG 1260 DE Filter 30 Full 60 SqFt Replacement Grid US $25.95
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 New Hayward Pentair FC 9240 FG 1248 DE Filter 24 Full 48 SqFt Replacement Grid US $22.95
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 Hayward Pentair FC 9330 FG 1003 DE Filter 18 Full 36 SqFt Replacement Grid US $19.95
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 NEW Filter Grid Set 24 SQ FT 12 inch FS 2002FS2002 US $110.50
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 72 Sq Ft Hayward Pentair Replacement DE Filter Grid Set Top Manifold US $165.50
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 PLEATCO DE GRID FOR POOL FG1005 9350 60 SQ FT DE FILTER FREE SHIP PFS3060 US $136.75
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 DE Filter Grid Repair Grids GRIDSOCK 48 Sq Ft New US $39.95
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 Pleatco Swimming Pool 60 Sq Ft DE Filter Grid Set For Hayward Pentair Filters US $139.99
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 DE Grid Set for 72 sq ft Pool DE Filter 8 Grids Total US $179.99
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 PLEATCO UNIV FG1004 9440 VERTICAL DE GRID 48 SQ FT FOR HAYWARD DE FILTERS US $116.99
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 36 Sq Ft Hayward Pentair Replacement DE Filter Grid Set Top Manifold US $93.50
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 24 Sq Ft Hayward Pentair Replacement DE Filter Grid Set Top Manifold US $75.50
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 60 Sq Ft Hayward Pentair Replacement DE Filter Grid Set Top Manifold US $155.50
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 UNICEL FG1005 DE Filter Full Grid 60 Sq Ft 7 Required US $19.99
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 New UNICEL FG 1003 DE Replacement Filter Full Grid 36 Sq Ft 7 Required FG1003 US $21.95
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 Hayward 36 SQ FT Pro Grid Inground Swimming Pool DE Filter DE3620 US $575.00
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 Pleatco Swimming Pool 72 Sq Ft DE Filter Grid Set For Hayward Pentair Filters US $162.99
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 Pleatco Swimming Pool 24 Sq Ft DE Filter Grid Set For Hayward Pentair Filters US $73.99
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 DE Filter Grid Repair Grids GRIDSOCK 36 Sq Ft New US $33.75
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 7FG1004 1PG1904 48 sq ft DE Filter Grid Set 8 Grids US $109.99
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 Pleatco 72 sqft Swimming Pool Universal DE Replacement Pool Filter Grid Set US $166.00
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 Hayward Pac Fab 36 sq ft De Filter Grid Set 8 Grids US $89.99
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 7 UNICEL FG 1004 DE Replacement Filters Full Grid 48 Sq Ft 24 FG1004 FC 9340 US $99.95
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 Pleatco 24 sqft Swimming Pool Universal DE Replacement Pool Filter Grid Set US $73.00
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 NEW Sta Rite DES 60 Sq Ft DE Filter Grid Set DE60 SET US $345.50
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 NEW Filter Grid Set 72 SQ FT 36 inch FS 2006FS2006 US $240.50
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 NEW Filter Grid Set 36 SQ FT 18 inch FS 2003FS2003 US $153.50
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 NEW Filter Grid Set 60 SQ FT 30 inch FS 2005FS2005 US $224.50
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 DE FILTER GRID REPLACEMENT GRIDSOCKS 48 Sq Ft New US $79.90
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 Pac Fab FNS Plus 36 sq ft De Filter Grid Set 8 Grids US $89.99
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 Hayward 36 SQ FT Pro Grid Inground Swimming Pool DE Filter DE3620 IN STOCK US $375.00
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 Hayward 48 SQ FT Pro Grid Inground Swimming Pool DE Filter DE4820 IN STOCK US $425.00
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 8 New UNICEL FG 1003 DE Filter Full Grid 36 Sq Ft 18 Replacement FG1003 US $94.95
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 7 New UNICEL FG 1002 DE Replacement Filter Full Grid 24 Sq Ft FC 9320 PSC 2 US $64.95
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 New UNICEL FG 1004 DE Replacement Filter Full Grid 48 Sq Ft 7 Required FG1004 US $25.95
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 PLEATCO DE GRID FOR PENTAIR HAYWARD POOL SET OF 8 36 SQ FT DE FILTERS US $92.19
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 PLEATCO DE GRID SET OF 8 FOR POOL FG1006 9360 VERTICAL 72 SQ FT DE FILTERS US $165.40
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 Hayward 36 sq ft De Filter Grid Full Set 18 8 grids US $89.99
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 New UNICEL FG 1005 DE Filter Full Grid 60 Sq Ft 30 7 Required FG1005 FC 9350 US $29.95
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 New Filter Grid Unicel Set FS 2004 FS2004 48 Sq Ft US $124.75
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 NEW UNICEL PG1905 DE Partial Grid 60 Sq Ft 1 Required US $37.95
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 Sta Rite DE Grid Set for 48 sq ft 8 FG1004 Grids US $124.99
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 New Filter Grid Unicel Set FS 2002 FS2002 24 Sq Ft US $83.50
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 New Filter Grid Unicel Set FS 2006 FS2006 72 Sq Ft US $204.95
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 New Filter Grid Unicel Set FS 2005 FS2005 60 Sq Ft US $143.75
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 New Filter Grid Unicel Set FS 2003 FS2003 36 Sq Ft US $99.75
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 DE Grid Set for 36 sq ft Pool DE Filter 8 Grids Total US $89.99
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 Sta Rite DE Grid Set for 36 sq ft 8 FG1003 Grids US $103.99
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 NEW Hayward Pro Grid 48 Sq Ft DE Pool Filter DE4820 US $759.50
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 Universal 60 Sq Ft 30 DE Grid Kit FC 9550 US $165.95
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 Universal 48 Sq Ft 24 DE Grid Kit FC 9540 US $124.00
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 Universal 36 Sq Ft 18 DE Grid Kit FC 9530 US $97.00
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 New UNICEL FG 1002 DE Filter Full Grid 24 Sq Ft 7 Required FC 9320 PSC 2 US $21.95
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Living "Off Grid" – Part 1
Living "Off Grid" – Part 1
Living "off grid" means you are not connected to a utility company power line, the electrical grid. You must produce your own electrical power to meet your needs. This can be a challenging and rewarding experience!
The average cost of extending power lines is approximately $80,000 per mile. Check with the nearest utility to determine what your costs might be. Generally speaking, if you are more than 1/4 mile from the utility line, you can install a renewable energy (RE) system to produce your power at less cost than extending the power line.
While you won't have electric bills with an RE system, there are periodic maintenance costs and costs for alternative fuels such as propane.
Conservation:
First, invest in conservation measures to reduce the amount of energy you need. See our Conservation Checklist and implement it's suggestions aggressively. Reducing your energy needs can greatly reduce the cost of any RE system you install.
Space heating and cooling:
Space heating and cooling account for approximately 50% of annual energy use. Reduce your energy needs for heating and cooling by using passive solar design principles. Passive solar design can reduce heating and cooling needs by up to 90%.
Further reduce energy needs by "super-insulating" – doubling the insulation levels recommended by building codes. Earth berming, building into a south facing hillside or berming earth up on the north, west, and east sides of structures, further reduces heating and cooling energy needs. We can provide plans review or refer you to certified building designers experienced in passive solar design.
Back up space heating should be accomplished with either wood or propane. It is impractical to heat with an electric furnace, or heat pump, powered by an RE system. They require too much electricity. Back up cooling, if required, should be done with an evaporative cooler (swamp cooler) with an electric
fan motor. An air conditioner is too large an electrical load to power with an RE system.
Water heating:
Water heating is the next greatest energy need, approximately 20% of annual energy use. In an off grid home this is usually provided by an on-demand propane water heater, or propane hot water tank. If you are planning to use an on-demand propane water heater, insure it is a model designed to work with solar preheated water. Many on-demand systems will not work correctly with preheated water.
A solar hot water heater can provide the majority of your hot water and significantly reduce propane costs for water heating. For off grid homes, we recommend a closed loop solar hot water collector which circulates a glycol solution (freeze protected) using a separate small solar panel powered circulating pump. The glycol solution is pumped through a heat exchanger attached to a standard hot water tank.
This system does not require any power from the household RE system. Solar heating provides most of the hot water, backed up by an on-demand propane water heater or propane hot water tank.
Water pumping:
For an off grid home, pumping water from a well and powering a pressure tank are the next greatest energy loads. Standard well pumps are usually 240 volt AC. Before allowing your well driller to install a standard pump, consider if a DC powered or 120 volt AC pump will do. Inform the well driller that the pump will have to be run with a small generator. This will help him select a pump that will work well with your RE system.
Most RE systems produce DC power, which must be "inverted" to AC power. This conversion results in a 5% to 10% energy loss. A DC powered pump avoids this loss. Most RE systems produce 120 volt AC power and must use a 120/240 transformer or second inverter to power a 240 volt AC well pump. This transformer consumes a small amount of power, but can be switched off when not in use.
A second inverter can be costly. Many water pumps require a very large "surge" of power to start. This can be difficult or impossible to do with some RE systems. Ask your well driller for a pump that has a low starting surge, such as a Grundfos SQ pump.
The ideal situation is to have a DC powered pump that pumps water to a storage tank, which then feeds water to the home by gravity, avoiding the need for an electrically powered pressure tank. Every foot of fall from the tank provides .433 psi of water pressure, so the storage tank should be 50 feet or more above the home to provide reasonable water pressure.
About the Author
<p>RunGreenPower.com will teach you how to build solar & wind power systems for
your home within a weekend.</p>
<p>Check It Now: <a href="http://www.rungreenpower.com/2010/07/10/homemade-solar-cells/">Homemade Soalr Cells</a></p>
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