- Cost of replacement filters [Check this first before buying an R.O. Water Filter]
- Filter change services
- Reverse Osmosis' FAQ [Must read]
- Leak Protection (Stop Leak, and Turn on the Alarm)
- New Pentair High Efficiency RO Membrane, 1:1 Waste Ratio
COMPARISON TABLE
| Model |  1. Standard |  2. "Quick Change" | 3. BEST SALE |  4. | 
| Product Photos | 
 
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| Price (installation NOT included) | from $240 | $380 | $360 | $480 | 
| Number of Stages | 5 | 5 | 5 | 4 | 
| Tank | Metal 3.2 gal. | Metal 3.2 gal. | Metal 3.2 gal. | Plastic 3.2 gal. | 
| Capacity (gallon/day) | 50GPD (+$50 for 75GPD) | 50GPD (+$50 for 75GPD) | 50GPD (+$50 for 75GPD) | 50GPD (+$50 for 75GPD) | 
| NSF Certification | COMPONENTS | COMPONENTS | COMPONENTS | WHOLE UNIT | 
| Warranty | 5 years | 5 years | 5 years | 5 years | 
| Cost of Filter Change | $10/ea x 3 = $30 | $23.50/ea x 3 = $70.50 | $25.00/ea x 4 = $100 | $25.00/ea x 4 = $100 | 
| Cost of "In-line" Filter | $20/ea USA | $20/ea USA | N/A | N/A | 
| Cost of RO Membrane | $50 for 50GPD | $70 for 50GPD | $95 for 50GPD | $110 for 50GPD | 
1. Five-Staged Standard RO Water Filter [RO-STD-550]
- $240 or $320 installation included.
- Standard RO filter. Required a wrench to change filters.
- APTERA ALKALINE: Add $140 - Natural Alkaline Mineral Enriched Water (unless you want to spend $2,000-$4,000 for an Ionizer/Alkaline system)
(Click on image for larger photo) 
 
2. "Quick-Change" PROPLUS Water Filter [RO-PROPLUS550]
- $380 or $460 installation included
- Easy to change filters by hand, no wrench needed. No tool, No drip, No hassle!
- APTERA ALKALINE: Add $140 - Natural Alkaline Mineral Enriched Water (unless you want to spend $2,000-$4,000 for an Ionizer/Alkaline system)
(click on image for larger photo) 
  
  
3. "Quick-Change" IsoTwist Water Filter [RO-ISO-550R]
- $360 hay $440 luôn tiền công gắn máy "installation included"
- Easy to change filters by hand, no wrench needed. No tool, No drip, No hassle!
- APTERA ALKALINE: Add $140 - Natural Alkaline Mineral Enriched Water (unless you want to spend $2,000-$4,000 for an Ionizer/Alkaline system)
(Click on image for larger photo)
4. "Quick Change" High Efficiency RO Water Fitlers, 1:1 Waste Ratio [RO-HE-ProQ-Plus] - 5 years warranty.
- $480 or $560 installation included; Easy to change filters by hand, no wrench needed. No tool, No drip, No hassle!
- APTERA ALKALINE: Add $140 - Natural Alkaline Mineral Enriched Water (unless you want to spend $2,000-$4,000 for an Ionizer/Alkaline system)
(click on image for more information)

5. "Ice Maker" for Refridgerator [FMQ-300]
- $250 installation included.
(click on image for larger photo)
6. "Ice Maker" for Restaurants: [Includes 2 filters, 2.5" Dia. x 20" High]
- $350 installation included.
- Cost of $15 + $25 = $40 for recommended filter change: 2 replacement filters every 6 months.
7. Restaurant, Coffee Shop "Light Commercial RO Unit 400GPD": [RO-400P-USA]
- $1,495 installation included
- Cost of $10 + $15 + $15 = $40 for filter change every 6-8 months)
| Click on photo to enlarge | Dimensions | 
|  | STANDARD Reverse Osmosis TANKS: 4.4 gal.; 11"dia.x14"H; $45 (Metal, actually holds ~2.5 gallons) 4 gal.; 11"dia x15"H; $65 (Plastic, actually holds ~2.5 gallons) 6 gal.; 12"dia.x16"H; $75 9 gal.; 13"dia.x21"H; $125 14 gal.; 15"dia.x23"H; $150 20 gal.; 15"dia.x30"H; $175 28 gal.; 16"dia.x38"H; $225 Link for RO tank specifications AMTROL RO TANKS: 4 gal.; 11"dia.x15"H; $90 10 gal.; 16"dia.x18"H, $180 14 gal.; 16"dia.x23"H; $195 20 gal.; 16"dia.x30"H; $250 34 gal.; 22"dia.x30"H; $420 44 gal.; 22"dia.x36"H; $450 86 gal.; 26"dia.x48"H; $600 | 
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