Top 10 Calcium Water Filter Whole House – Under-Sink & Countertop Filtration

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1. Express Water

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Easy Release, Sediment, Express Water Whole House Water Filter, Carbon Filters Includes Pressure Gauges, Polyphosphate Anti-Scale, 3 Stage Home Water Filtration System, and 1 Inch Connections

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Express Water #ad - Please be informed - this whole house system is installed at the main water supply line for the purpose of treating all incoming water in your home or business. Durable whole house water filter: express Water Whole Home Water Filtration Systems are constructed with standing stainless-steel frames for long term durability and quality.

On demand support: support from experts who can answer any of your questions about your new home water filter. Anti scale water filter: drink the healthiest water on Earth as your home water filter reduces over 65 different contaminants from your water including chlorine, rust, algae and more while protecting your home from the formation of scale and corrosion. If you are searching for a filter that removes TDS, we recommend our Express Water Reverse Osmosis systems. Express water’s water filtration systems are ready to install with 1” inch standard connections.

Unlike reverse osmosis systems, this system will NOT reduce Total Dissolved Solids TDS. Whole house water filter: reduce harmful contaminants from your entire home’s water with Express Water’s 3 Stage Water Filtration System. Quality guaranteed: rest easy with our 1-year warranty on all Express Water Whole Home Water Systems. Easy to replace water filter cartridges: All Express Water whole house water filter replacement cartridges are designed for quick and easy replacement to keep your system up and running.
BrandExpress Water #ad
ManufacturerExpress Water #ad
Height30 Inches
Length23.5 Inches
Weight65 Pounds
Width8.5 Inches
Part NumberWH300SCPS
ModelWH300SCPS

2. Express Water

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Easy Release, Express Water WH100SP Anti Scale Whole House Filter – Home Water Filtration System – Polyphosphate Conditioner – includes Pressure Gauge, Blue, and 1” Inch Connections

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Express Water #ad - The best filtration - made with food-grade slow dissolve sodium polyphosphate crystal beads giving you maximum chemical absorption. Water when you need it - large easy flow filters and high flow connections keep your water pressure high. Don’t waste time on maintenance - Our quick and easy to understand design means you can swap out filters quick and easy. Protect your home from scale - protect the entire house from scale and remove algae, sand, sand, silt, sediment, and rust. High standard filtration - verified by independent laboratory testing to meet NSF / ANSI Standards.
BrandExpress Water #ad
ManufacturerExpress Water #ad
Height28.75 Inches
Length7.25 Inches
Width8 Inches
Part NumberWH100SP
ModelWH100SP

3. 3M Aqua-Pure

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Helps Prevent Scale Build Up On Hot Water Heaters and Boilers, 3M Aqua-Pure Whole House Scale Inhibition Inline Water System AP430SS

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3M Aqua-Pure #ad - Corrosion resistance: 304 stainless steel head can be installed on existing copper pipes in the home; It consists of a corrosion resistant material that provides long service life. Ideal for any size home. Maintains efficiency: By inhibiting scale build up on heating elements, helps maintain water heater efficiency.

Product specifications: system has a pressure range of 25 to 125 PSI 862 kPa and operating temperature of 40 to 100F 4. 4 to 37. 8c. Nsf standard 42 certified: tested by nsF International to NSF/ANSI Std; 42 for material and structural requirements only. Helps protect hot water heaters: polyphosphates, included in this product, pipes, help to inhibit scale build up in hot water heaters both standard gas or electric and tank less styles and boilers; Helps extend the life of hot water heaters and hot water using appliances, and downstream plumbing fixtures such as faucets and shower heads.

High flow rates: 3/4 inch npt inlet/outlet connections for easy installation and high flow rates rated for up to 10 GPM; System to be installed on cold water line feeding the water heater. Easy to replace: easy change out of the 3M Aqua-Pure AP431 Replacement Water Cartridge makes system maintenance easier.
Brand3M Aqua-Pure #ad
Manufacturer3M #ad
Height10.2 Inches
Length2.8 Inches
Weight1.9 Pounds
Width2.8 Inches
Part NumberAP430SS
Model70020003060

4. 3M Aqua-Pure

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Alfi 5621104 3M Aqua-Pure Whole House Water Filtration System – Model AP904

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3M Aqua-Pure #ad - 100, 000 gallon capacity: replacement cartridge has an activated carbon filter with nominal heavy duty particulate reduction rating of 5 micronss and a 100, 000 gallon capacity at high flow rates of 10 gpm and even at intermittent peak flow rates of 20 gpm. Clearly great water: this whole house water filter reduces sediment build-up, chlorine taste and odor as well as scale – helping to increase the life of hot water heaters and appliances dishwashers, clothes washers,  etc.

Easy to replace: sanitary quick change sqc design allows for fast and easy change-outs of the 3M Aqua-Pure AP917HD-S Replacement Water Filter Cartridge without having to contact the filter media or the need for a filter wrench. It consists of a corrosion resistant material that provides long service life. Flow rate: 1” inlet and outlet connections to help a plumbing professional with easy installation and peak flow rates up to 20 gpm to meet the water pressure demands of most homes.

Ideal for larger homes and is effective with both chlorinated municipal and non-chlorinated well water systems. Fitting type: NPT Female. Nsf standard 42 certified: tested by one of the world’s most respected independent certification organizations that helps protect the world’s food, water, consumer product and environment. Corrosion resistant: 304 stainless steel head can be installed on existing copper pipes in the home.
Brand3M Aqua-Pure #ad
Manufacturer3M #ad
Height4.5 Inches
Length25.2 Inches
Weight10.35 Pounds
Width4.5 Inches
Part Number5621104
Model5621104

5. Aquasana

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6 year filter, Aquasana Whole House Water Filter System Rhino

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Aquasana #ad - Easy maintenance - no draining or back flushing needed - Easily replace pre and post filters every 3 months for best filtration and flow rate. Pex tubing is not included – Item may ship in more than one box and may arrive separately.

High-performance filter system - carbon & kdf filtration media engineered to maximize contaminant reduction while leaving healthy minerals in your water. Clean, herbicides, great tasting water from every tap in your home - Removes 97% of chlorine and reduces harmful contiminants like lead, pesticides, VOCs, mercury, and more. This system will nOT reduce Total Dissolved Solids TDS. Top-grade components - system includes filter tank, 10" pre-filter, couplings, and valves. Cost efficient & long lasting - clean water for less than $001 a gallon - save twice as much compared to other brands on purified water for 600, 000 gallons or 6 years.
BrandAquasana #ad
ManufacturerAquasana Inc. #ad
Height27 Inches
Length9 Inches
Weight52.92 Pounds
Width46 Inches
Part NumberEQ-600-AMZN
ModelEQ-600-AMZN
Warranty6 year warranty

6. iSpring

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Alternative Water Softener, iSpring ED2000 Whole House Electronic Descaler Water Conditioner

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iSpring #ad - Designed for very hard water areas 10-19 grains. Works on any pipe, even PEX and PVC. Solves hard water problems without the need for chemicals, salt, or maintenance, while keeping healthy minerals in the water by preventing scale deposits from forming and allowing existing scale to break down.

1-year money-back and lifetime tech support from iSpring. Great for your home and the environment, individuals on salt-restricted diets, and those looking for healthier skin and hair. Reduces energy consumption with an average one year payback period. No plumbing modifications required. Unlike salt water softeners, ED2000 does not change the chemistry of water. Descales your entire water system and prevents scale buildup in pipes. Maintenance-free. Saves energy and extends the life of your appliances.
BrandiSpring #ad
ManufactureriSpring Water Systems, LLC #ad
Height2 Inches
Length7 Inches
Weight2 Pounds
Width3.5 Inches
Part NumberED2000
ModelED2000

7. 3M Aqua-Pure

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Helps Prevent Scale Buildup On Hot Water Heaters, For Aqua-Pure System AP430SS, Boilers, Plumbing Pipes and Fixtures, 3M Aqua-Pure Whole House Scale Inhibition Inline Replacement Water Cartridge AP431

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3M Aqua-Pure #ad - Easy to replace: Easy change-out makes system maintenance easy. Maintains efficiency: By inhibiting scale buildup on heat elements, helps maintain water heater efficiency.

High flow rates: Rated for up to 10 gallons per minute gpm. Product specifications: system has a pressure range of 25-125 PSI 862 kPa and operating temperature of 40-100F 4. 4-37. 8c. Designed for use with 3m aqua-pure whole house scale Inhibition Inline Water System AP430SS. Helps extend the life of hot water heaters and hot water using appliances, and downstream plumbing fixtures such as faucets and shower heads. Helps protect hot water heaters: polyphosphates, pipes, included in this product, help to inhibit scale buildup in hot water heaters both standard gas or electric and tank-less styles and boilers.
Brand3M Aqua-Pure #ad
Manufacturer3M Aqua-Pure #ad
Height12.99 Inches
Length2.8 Inches
Weight1 Pounds
Width2.8 Inches
Part NumberAP431
Model33576
Warranty1 year limited warranty

8. Culligan

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2-Pack, Culligan Whole House Advanced Water Filter, White, 15,000 Gallons

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Culligan #ad - Reduces: sediment, scale, rust, dirt and sand. Features a flow rate of 4 gpm and filter life of 3 months/15, 000 gallons depending on usage and water conditions.

The hf-150a is tested and certified by wqA against NSF/ANSI Standard 42 for materials safety and structural integrity only. The scwh-5 carbon wrapped standard duty filtration cartridge works in HF-150A, HF-360A, HF-160, and HF-365 whole house filtration systems. Compatible with culligan model hf-150a, HF-160, HF-360A, and HF-365. Micron rating of 5 the smaller the micron rating, the smaller size patricle the cartridge will filter. Perfect for residential homes, helps protect appliances and pluming from sediment and scale.
BrandCulligan #ad
ManufacturerCulligan #ad
Height9.75 Inches
Length2.75 Inches
Weight0.7 Pounds
Width5.5 Inches
Part NumberSCWH-5
ModelSCWH-5

9. Express Water

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Carbon Filters – Includes Pressure Gauges, and 1” Inch Connections, KDF, Easy Release, Express Water Heavy Metal Whole House Water Filter – 3 Stage Whole House Water Filtration System – Sediment

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Express Water #ad - If you are searching for a filter that removes TDS, we recommend our Express Water Reverse Osmosis systems. On demand support: support from experts who can answer any of your questions about your new home water filter. Express water’s water filtration systems are ready to install with 1” inch standard connections.

Easy to replace water filter cartridges: All Express Water whole house water filter replacement cartridges are designed for quick and easy replacement to keep your system up and running. Whole house water filter: reduce harmful contaminants and dangerous heavy metals from your entire home’s water with Express Water’s 3 Stage Heavy Metal Water Filtration System. Please be informed - this whole house system is installed at the main water supply line for the purpose of treating all incoming water in your home or business.

Quality guaranteed: rest easy with our 1-year warranty on all Express Water Whole Home Water Systems. Durable whole house water filter: express Water Whole Home Water Filtration Systems are constructed with standing stainless-steel frames for long term durability and quality. Unlike reverse osmosis systems, this system will NOT reduce Total Dissolved Solids TDS. Heavy metal water filter: drink the healthiest water on Earth as your home water filter reduces over 80 different contaminants from your water including chlorine, mercury, iron, lead, and more.
BrandExpress Water #ad
ManufacturerExpress Water #ad
Height29.25 Inches
Length23.5 Inches
Weight65 Pounds
Width8.5 Inches
Part NumberWH300SCKS
ModelWH300SCKS

10. 3M Aqua-Pure

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3M Aqua-Pure Whole House Water Filtration System AP902 5621101, 1 Per Case

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3M Aqua-Pure #ad - Whole house water filtration helps reduce sediment build-up and increase the life of hot water heaters and appliances. Manufactured from fda cFR-21 compliant materials that are food and drinking water safe. Sanitary quick change sqc design allows for fast and easy cartridge change-outs without the need for a filter wrench. Up to 20 gallons per minute GPM flow rate meets the water pressure demands of most homes. 304 stainless steel head provides "sweat-in-place" installation, corrosion resistance, and long life.
Brand3M Aqua-Pure #ad
Manufacturer3M #ad
Height4.5 Inches
Length25.06 Inches
Weight7.69 Pounds
Width4.5 Inches
Part NumberAP902
Model5621101