Nelsen Corporation
Nelsen C-Series AIO Sulfur Filter System
Nelsen C-Series AIO Sulfur Filter System
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A complete whole-house air-injection filter. One price includes everything listed below.
What's in the box
| Size | Mineral tank | Media | Control valve |
|---|---|---|---|
| 10"x44" – 1-3 Baths | 10" x 44" | sulfur-removal filter media (catalytic carbon blend) | Connected Series air-draw metered valve with Bluetooth app |
| 10"x54" – 3-4 Baths | 10" x 54" | iron-removal filter media | Connected Series air-draw metered valve with Bluetooth app |
| 12"x52" – 4-5 Baths | 12" x 52" | iron-removal filter media | Connected Series air-draw metered valve with Bluetooth app |
| 13"x54" – 5-6 Baths | 13" x 54" | iron-removal filter media | Connected Series air-draw metered valve with Bluetooth app |
- Control valve: Connected Series air-draw metered valve with Bluetooth app with built-in air injection.
- Bypass: bypass valve (included).
- Mineral tank: black fiberglass-wrapped mineral tank with support bed and distributor.
- Media: sulfur-removal filter media (catalytic carbon blend), iron-removal filter media, sized to the tank.
- Also included: 1" plumbing adapters, install and service manuals.
- Ships pre-built, ready to install, free in the US.
How it works
The valve draws a pocket of air into the top of the tank. Water passes through the air, which oxidizes iron, manganese and hydrogen sulfide into particles, and the media bed filters them out. Every day the valve backwashes the bed, sends the trapped particles to drain and refreshes the air pocket.
Media benefits
- Removes hydrogen sulfide: no rotten-egg smell
- Stops black staining on fixtures and silverware
- Daily automatic backwash keeps the bed clean
- Air injection oxidizes iron, manganese and sulfur with plain air, so no chemicals or chlorine are added
- Removes dissolved iron: clear water with no orange or brown stains
- Protects fixtures, laundry, water heaters and appliances
- Daily automatic backwash sends the trapped iron to drain
- Air injection oxidizes iron, manganese and sulfur with plain air, so no chemicals or chlorine are added
Why this system costs what it does
| This system | Typical lower-priced kits | |
|---|---|---|
| Iron and sulfur treatment | Air injection: oxidizes with plain air, no chemicals | Often chlorine or permanganate feed, or no oxidation step |
| Filter design | Automatic daily backwash keeps the media bed clean | Often a non-backwashing upflow head or a cartridge housing |
| Bypass valve | Included | Often not included or an extra option |
| Media | Named media, sized to the tank | Media type or amount often not stated |
| Delivery | Ships pre-built, ready to install | Often ships in pieces for you to assemble and load |
| Shipping | Free in the US | Free only above a minimum, or extra |
Not sure which size? Send a water test or tell us your symptoms and we will size it free.
The CS AIO 10"x44" Sulfur System tackles the rotten-egg odor of hydrogen sulfide in well water using 's Connected Series AIO™ Plus air-injection technology. Bluetooth connectivity through the free Legacy View app lets you program and monitor the system from an iPhone or Android™ device, putting full control in the palm of your hand. This compact size is well matched to smaller homes and lighter sulfur loads.
Its AIO Plus control valve supports independently programmable air-draw and backwash cycles, so a fresh air pocket can be drawn daily without forcing a backwash, saving thousands of gallons each year. A slow release of the compressed air charge before backwash prevents the explosive surge that can knock loose drain lines on lesser systems. This 10" x 44" configuration includes the Connected Series Air Draw Meter Control Valve, bypass valve, black polyglass mineral tank, and all media and support bed sized for sulfur reduction.
- 10" x 44" black polyglass mineral tank
- Connected Series Air Draw Meter Control Valve, Bluetooth-enabled
- Free Legacy View app for iPhone and Android™
- Programmable air-draw and backwash cycles save water
- Media and support bed included for sulfur removal
- Shipping weight: approximately 110 lbs
By injecting air ahead of the filter bed, the system oxidizes hydrogen sulfide so it can be trapped and flushed to drain, leaving water odor-free without chlorine dosing. Everything needed for sulfur reduction is included, so installation comes down to setting the tank, plumbing it in, and programming the valve via the app. Add the optional chrome tank jacket for a clean appearance and choose plumbing connections separately to complete the installation in your home.
Sulfur odor is one of the most common and frustrating well-water complaints, and air injection addresses it at the source by oxidizing the gas rather than masking it. The Connected Series adds the convenience of phone-based programming and the efficiency of a daily air-draw cycle that limits backwash frequency. For a smaller home, this 10" x 44" unit offers an approachable entry point into smart, chemical-free sulfur control with capacity to match modest demand. Over time, eliminating sulfur odor at the source improves not just drinking water but also the experience of showering, laundry, and cooking throughout the entire home.
