Will this work mounted on its side, or does it have to be upright?

Dear Tydi, Thank you for your inquiry. Regarding this issue, this whole house scale inline water system can only be installed upright. If you need any further assistance, please feel free to contact us at 1-888-352-3558 (8:00 AM - 5:00 PM PST, Mon - Fri). Thank you. Kind Regards Mia Lauren Customer Service Rep

Dear customer, Thank you for your inquiry. Regarding this issue, this system includes a filter cartridge and 3/4" NPT inlet/outlet connections. Please contact us at 1-888-352-3558 (8:00 AM - 5:00 PM PST, Mon - Fri) if you have any other questions. Thank you. Kind Regards, Mia Lauren Customer Service Rep

what is the reason for only installing on the hot water line? Would like to use for entire house, cold water also.

Hi, Thanks for your interest in our AP431 filter product. Please note that this is only designed for cold water line; it is designed to protect water heater placed after it, thank you. If you have contacted us via email but received no reply, please check the Spam/Junk Folder first. Thank you. If you have any other inquiries, please feel free to contact us. 1-888-352-3558 Kind Regards Mia Lauren Customer Service Rep

Are other parts or items needed? Or can you really filter your entire house water with just this? Where do you install it?

Hi, Thanks for your interest in our product. Please note that this is a scale inhibitor. When using this scale inhibition system, we recommend installing a pre-filter as well.You need to install it behind the water meter. https://www.amazon.com/dp/B08XXJSN29/ If you have any other questions, please feel free to contact us. Enjoy the rest of your day! Kind Regards Mia Lauren Customer Service Rep

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AP431 AP430SS Whole House Scale Inhibitor Filter, Heater Softener System, Prevent Scale Build Up On Hot Water Heaters, Pipes and Boilers

Product ID: 313369634

Details

Brand
Waterdrop
External Testing Certification
RoHS
Material
Stainless and
Product Benefits
Inhibits
Product Dimensions
2.5"D x 2.5"W

🔧Durable 304 stainless steel adapter

⚙️10 GPM high flow rate

🛡️Food-grade polyphosphates inhibit scale

$119.62

Duties & taxes included

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Scale-free water, stress-free living — upgrade your home’s hydration game!

BUILT TO LAST - Premium anti-rust 304 stainless steel construction ensures durability and long-term reliability in your water system.
SEAMLESS HIGH FLOW - 3/4" NPT inlet/outlet supports a robust 10 GPM flow rate, maintaining stable water pressure without compromise.
HASSLE FREE MAINTENANCE - Each cartridge lasts up to 6 months, delivering consistent scale inhibition with easy replacement and installation.
EFFORTLESS SCALE DEFENSE - Protect your entire home’s plumbing and appliances from damaging scale buildup with advanced food-grade polyphosphates.
MAXIMIZED ENERGY EFFICIENCY - Extend the lifespan and boost the performance of your water heater, dishwasher, and boilers by preventing mineral deposits.

The Waterdrop AP431 AP430SS is a whole-house scale inhibitor system designed to prevent lime-scale buildup in water heaters, pipes, and boilers. Utilizing food-grade polyphosphates and a durable stainless steel adapter, it supports a high flow rate of 10 GPM while conserving energy and extending appliance life. Easy to install with a 3/4" NPT connection, its cartridge lasts up to 6 months, ensuring healthier water and efficient plumbing performance.

Specifications

ASIN	B08LPBPVPS
Best Sellers Rank	#22,318 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #47 in Under-Sink & Countertop Filtration
Brand Name	Waterdrop
Customer Reviews	4.2 4.2 out of 5 stars (908)
External Testing Certification	RoHS
Included Components	3/4” NPT inlet/outlet connection, Scale inhibition system *1
Item Dimensions D x W x H	2.5"D x 2.5"W x 12.5"H
Manufacturer	Waterdrop
Manufacturer Part Number	WD-W65
Material Type	Stainless Steel and Food-grade polyphosphates
Model Number	WD-W65
Number of Items	1
Product Benefits	Inhibits Lime-Scale Growth
Set Name	Single
UPC	840814194058
Unit Count	1.0 Count

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$119.62

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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3 days ago

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The delivery time was excellent, and the packaging was secure.

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