Whole House Reverse Osmosis Systems
Whole House Reverse Osmosis Systems
Pure, filtered water from every faucet, shower, and appliance — engineered and assembled in the USA with 30+ years of water treatment expertise.
What Is a Whole House Reverse Osmosis System?
A whole house reverse osmosis system (also called a point-of-entry RO system) treats all the water entering your home — not just at one tap. Every faucet, shower, toilet, dishwasher, ice maker, and appliance receives the same high-purity water that passes through a semi-permeable RO membrane, removing up to 98% of dissolved solids, heavy metals, chlorine, fluoride, nitrates, PFAS, and hundreds of other contaminants.
Unlike under-sink RO units that only treat drinking water at a single point, a whole-home system is installed at the main water line — treating your entire supply before it reaches any fixture. The result: clean water for cooking, bathing, laundry, and everything in between.
How It Works
Pre-Filtration
Sediment and carbon filters remove large particles, chlorine, and chloramines that would damage the RO membrane.
Booster Pump
A pump raises water pressure to the 60–80 PSI needed for efficient membrane operation, even on low-pressure well or municipal supplies.
RO Membrane
High-flow TFC membranes reject up to 98% of total dissolved solids (TDS), heavy metals, microorganisms, and chemical contaminants.
Storage Tank
A pressurized tank holds purified water so your home has adequate flow for simultaneous use at multiple outlets.
Post-Treatment
Optional remineralization, UV sterilization, or pH adjustment can be added to tailor the final water quality to your preferences.
Distribution
A delivery pump maintains consistent pressure throughout your home's plumbing — no reduced flow at fixtures.
AMPAC USA Whole House RO Systems
AMPAC USA manufactures whole house reverse osmosis systems in sizes from 100 GPD to 10,000+ GPD. Our residential and light-commercial units are engineered for homes, estates, ranches, and multi-family properties. All systems use NSF-certified components and are assembled at our facility in Woods Cross, Utah.
Whole House RO System 300 GPD
Ideal for homes with 2–4 bathrooms and 4–6 occupants. Produces 300 gallons of purified water per day with 98% contaminant rejection.
- 4" × 14" high-flow TFC membrane
- 98% average TDS rejection
- Triple 20" pre-filtration stages
- Aquatec booster pump (110/220V)
- Liquid-filled pressure gauges
- NSF/FDA certified components
Whole House RO System 200 GPD
Perfect for homes with 1–3 bathrooms and up to 4 occupants. Compact footprint with stainless steel pressure vessels and aluminum powder-coated frame.
- Twin 2½" × 10" high-flow TFC membranes
- 98% rejection rate
- Triple 20" pre-filtration stages
- Aquatec booster pump (110/220V)
- Stainless steel pressure vessels
- Quick-disconnect fittings
Whole House RO System 1,000 GPD
Designed for large estates, multi-family homes, or properties with high daily water demand. Heavy-duty construction with optional UV sterilization.
- 4" × 21" TFC membrane element
- 98% TDS rejection rate
- Rotary vane Procon pump with GE motor
- Stainless steel pressure vessel
- Aluminum powder-coat epoxy frame
- Optional UV sterilizer
How to Size a Whole House RO System
Choosing the right capacity is the most important decision when purchasing a whole house reverse osmosis system. Too small and you'll run out of purified water; too large and you'll pay for unused capacity. Use the table below as a starting guide — contact us for a free sizing consultation based on your actual water usage report.
| Home Size | Occupants | Bathrooms | Est. Daily Use | Recommended System |
|---|---|---|---|---|
| Small home / condo | 1–3 people | 1–2 baths | 100–150 GPD | APRO200 (200 GPD) |
| Medium home | 3–5 people | 2–3 baths | 150–250 GPD | APRO300 (300 GPD) |
| Large home | 5–8 people | 3–5 baths | 300–700 GPD | APRO1000 (1,000 GPD) |
| Estate / multi-family | 8+ people | 5+ baths | 700+ GPD | Custom Quote |
Important note: RO systems operate at only a fraction of their rated output during a 24-hour period due to recovery rates and storage tank limits. Always add a 30–50% buffer above your peak daily demand, and ensure your storage tank capacity matches your peak-hour flow rate.
Benefits of a Whole House Reverse Osmosis System
???? Better for Skin and Hair
Showering in RO-purified water eliminates chlorine, chloramines, and dissolved minerals that strip natural oils from skin and hair. Many homeowners report softer skin and less irritation within weeks of installation.
???? Improved Taste and Cooking Quality
RO water removes the chlorine taste and mineral aftertaste from tap water. Coffee, tea, soups, and other foods taste noticeably better. Ice cubes are crystal-clear with no off-flavors.
???? Protects Appliances and Plumbing
High TDS and hard water build scale inside water heaters, dishwashers, coffee makers, and pipes — reducing efficiency and shortening lifespan. RO water with low TDS dramatically reduces scale formation and extends appliance life.
???? Removes PFAS and Emerging Contaminants
Reverse osmosis is one of the few technologies certified to remove PFAS ("forever chemicals"), pharmaceuticals, nitrates, arsenic, and other contaminants that carbon filters or water softeners cannot address.
???? Ideal for Well Water and Brackish Sources
Homes on private wells with high TDS, hardness, iron, or other issues benefit most from whole-house RO. AMPAC systems are designed for both municipal and well water applications.
✅ Peace of Mind for the Whole Family
Every water outlet in your home delivers consistently safe water — from the kitchen tap to the garden hose. No remembering to only drink from the filtered tap or worry about what's in the kids' bath water.
Whole House RO: Honest Pros & Cons
✅ Advantages
- Purified water at every outlet in the home
- Removes 98% of TDS, heavy metals, chlorine, PFAS, nitrates
- Protects plumbing and appliances from scale
- Better-tasting water for cooking and drinking
- Ideal for well water with high contamination
- One system replaces multiple point-of-use filters
- Membranes last 2–3 years with basic maintenance
⚠️ Considerations
- Higher upfront cost than under-sink units
- Produces wastewater (concentrate) — 30–50% recovery is typical
- RO water is slightly acidic — remineralization recommended
- Requires professional installation and periodic filter changes
- Storage tank needed to meet peak-hour demand
- Not necessary if your only concern is drinking water taste
Maintenance Requirements
A whole house RO system is low-maintenance compared to the peace of mind it provides. Follow this general schedule to keep your system performing at peak efficiency:
- Every 3–6 months: Replace sediment pre-filter (more often in high-turbidity water)
- Every 6–12 months: Replace carbon pre-filter cartridges (chlorine protection for membrane)
- Every 2–3 years: Replace RO membrane elements (sooner if TDS rejection drops below 90%)
- Annually: Inspect pressure vessels, connections, and pump for leaks or wear
- As needed: UV lamp replacement (if equipped) — typically every 12 months
AMPAC USA stocks replacement filters, membranes, and parts for all systems. Shop replacement filters and accessories →
Frequently Asked Questions
How much does a whole house reverse osmosis system cost?
AMPAC USA whole house RO systems range from approximately $1,500 to $8,000+ depending on capacity, configuration, and options. A 200–300 GPD system for a medium-sized home typically falls in the $2,000–$4,000 range, not including installation. Larger systems (1,000+ GPD) for estates or multi-family use run higher. Contact us for a custom quote based on your water quality report and home size.
How many GPD do I need for a whole house system?
Calculate your daily water use at approximately 50–80 gallons per person per day, then add 30–50% buffer capacity. A family of 4 uses roughly 200–320 GPD, so a 300 GPD system (APRO300) is typically the right fit. Homes with more bathrooms, pools, or irrigation may need larger systems. Our team can help size your system precisely using your water meter readings.
Can a whole house RO system handle well water?
Yes — AMPAC USA systems are specifically engineered for well water applications with high TDS, hardness, iron, arsenic, nitrates, or bacterial contamination. We recommend starting with a water quality lab test so we can configure the correct pre-treatment (iron filters, water softeners, UV sterilizers) before the RO membrane for maximum membrane life. Many of our installations serve homes on private wells throughout Utah and the western US.
Is whole house RO water safe to drink?
Yes. RO water is safe to drink and is used worldwide in bottled water production and medical settings. Because RO removes most minerals, many users add a remineralization filter post-RO to restore calcium, magnesium, and bicarbonates — improving taste and alkalinity. AMPAC offers remineralization options for all our systems.
Does whole house RO remove chlorine?
Yes. Our systems include a multi-stage pre-filtration train — including carbon block and KDF-GAC filters — that removes free chlorine and chloramines before water reaches the RO membrane. This protects the membrane from oxidative damage while ensuring your purified water is free from disinfection byproducts (DBPs) and the distinctive chlorine taste and odor.
What is the difference between whole house RO and a water softener?
A water softener uses ion exchange to remove calcium and magnesium (hardness), replacing them with sodium. It does not remove TDS, heavy metals, nitrates, PFAS, or other chemical contaminants. A whole house RO system removes virtually all dissolved solids, including hardness minerals, heavy metals, nitrates, fluoride, and hundreds of other contaminants. For the most comprehensive treatment, many homes use both: a water softener upstream to extend membrane life, followed by an RO system for full purification.
How long does a whole house RO membrane last?
With proper pre-filtration and maintenance, AMPAC TFC membranes typically last 2 to 3 years. In high-TDS or heavily chlorinated water (without adequate pre-treatment), membranes may need replacement sooner. Test your TDS rejection annually — if it drops below 90%, it's time to replace the membrane. Pre-filter cartridge changes every 6–12 months are the most important factor in maximizing membrane life.
Does AMPAC offer installation support?
AMPAC USA provides detailed installation manuals, technical drawings, and phone/email support for all our systems. We work with licensed plumbers across the US and can recommend certified installers in many regions. Contact our technical team at 877-611-8530 or by email for installation guidance specific to your home's plumbing configuration.
Related Resources
- How to Maintain Your Whole House Reverse Osmosis System — Step-by-step maintenance guide from our water treatment experts
- All Residential Water Treatment Systems — Browse our complete residential lineup including under-sink RO, UV systems, and water softeners
- Replacement Filters & Accessories — Sediment cartridges, carbon blocks, RO membranes, and more
- Whole House Water Filters — For homes that need filtration without full RO purification
Ready to Get Pure Water From Every Tap?
Our water treatment engineers are ready to help you select and configure the right whole house RO system for your home, water quality, and budget.
Request a Free Quote Call 877-611-8530