The scalewatcher proprietary technology prevents the formation of damaging scale, removes existing scale, and reduces maintenance all while saving you money.

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Residential (Domestic) Scalewatcher® Descaler Solutions

Until Offer Disappears! You may know that the washing machine can fail prematurely due to hard scale buildup. Additionally, the problem also affects boilers, coffee makers, kettles and water faucets and aerators in the kitchen and bathroom. Scalewatcher® is an excellent and environmentally conscious way to stop these problems. Scalewatcher®, attached on the incoming main will protect all water using applicances in your home.

When considering a model for residential use, we recommend the Scalewatcher® 3 Star, the most powerful residential unit for indoor use, effective when treating the hardest of waters. For outdoor installation and for swimming pools, you should purchase the Scalewatcher® 5 Star Weather Proof Heavy Duty model. The Scalewatcher® Small Wonder should only be considered when financially constrained, albeit it is not made for longevity.
Scalewatcher Small Wonder
Supply Voltage: 110V + 20%, 50/60 Hz
Current Consumption: 6 Watts
Power Supply: External adaptor
Application Voltage: 12 V / DC
Coil cable: 16 AWG stranded
Maximum Coil Temperature: 176F
Capable of Driving: Two coils
Protection Rated: NEMA 2
Output Reading: LED lights
Max. Enclosure Temperature: +149F
Min. Enclosure Temperature: -14F
Unit Dimensions: 3.2” x 3.2” x 2.4”

Regular Retail Price: $249.00  ~  Current Sale Price: $179.00

The Scalewatcher® Small Wonder (7-20 GPG) for 1” pipes, is designed for small apartments, condominiums, mobile homes, RV's and trailers. We offer a low price on this unit because it is made in China for Scalewatcher®. Covered by 90 Day Money Back Guarantee and 2 Year Warranty on this device. The unit weighs 1.5lbs. For use on PVC, CPVC, Pex, copper, steel or galvanized pipes indoors. This unit is not rated to treat well water!
Supply voltage: 110V + 10%, 60 Hz
Current consumption: < 0.1A
Power Supply: External adaptor
Application Voltage: 12 V / DC
Coil Cable: 16 AWG stranded
Maximum Coil Temperature: 200F
Capable of Driving: Two coils
Protection Rated: NEMA 2
Output Reading: LED Bar graph
Max. Enclosure Temperature: +166F
Min. Enclosure Temperature: -20F
Unit Dimensions: 9.5” x 6” x 1.5”
Scalewatcher 3 Star Series

Regular Retail Price: $582.00  ~  Lower Sale Price: $399.00

The Scalewatcher® 3 Star Series is our best residential seller. It treats hard water (10-25 GPG) for pipe sizes up to 1.5" in diameter. The unit is manufactured with durable ABS (Acrylonitrile Butadiene Styrene) thermoplastic enclosure to promote long life. It ships in a box with the dimension of 14” x 7” x 3” and weighs 2lbs with all contents. For use on PVC, CPVC, Pex, Kitex, copper, steel or galvanized pipes indoors. Covered by 12 Month Money Back Guarantee and unrivaled 10 Year Warranty on this device. PDF Download of Installation Manual.
Supply Voltage: 110-240 VAC + 10% 50/60Hz
Power Supply: Internal 10 Watt
Application Voltage: 12 V / DC
Coil Cable: 16 AWG stranded (1.5 mm)
Max Coil Temp: 176F
Capable of Driving: 2 Coils Double Stacked
Output Reading: Bar Graph
Enclosure Material: ABS, Beige
Max. Enclosure Temperature: +166F
Min. Enclosure Temperature: -40F
Unit Dimensions: 8.3”x4.1”x2.6”
Scalewatcher 4 Star Series

Regular Retail Price: $707.00  ~  Lower Sale Price: $636.00

The Scalewatcher® 4 Star Series is our latest residential addition, for indoor use only. It treats very hard water (50 GPG) for pipe sizes up to 1.5" in diameter. The unit is manufactured with durable ABS (Acrylonitrile Butadiene Styrene) thermoplastic enclosure to promote long life. The unit weighs 1.5 lbs, 2 lbs with all contents in box. For use on PVC, CPVC, Pex, Kitex, copper, steel or galvanized pipes indoors. Covered by 12 Month Money Back Guarantee and unrivaled 10 Year Warranty on this device.
Residential Weatherproof WPHD
Supply Voltage: 110V + 10%, 60 Hz
Current Consumption: 1 ma
Power Supply: Internal
Application Voltage: 12 V / DC
Coil Cable: 16 AWG stranded
Maximum Coil Temperature: 230F
Capable of Driving: Two coils
Protection Rated: NEMA 4
Output Reading: LED lights
Max. Enclosure Temperature: +238F
Min. Enclosure Temperature: -40F
Unit Dimensions: 6.3" x 3.9" x 2.5"

Regular Retail Price: $1,028.00  ~  Current Sale Price: $925.20

The Scalewatcher® Weatherproof Heavy Duty (WPHD) is especially design with a sealed polysterol gray aluminum waterproof housing. This descaler is designed to treat very hard water (10-25 GPG) for pipes up to 1.5”. Recommended for tankless water heaters, swimming pools, spas, greenhouse, nurseries and any other environment with high humidity content. It ships in a box with the dimension of 20” x 11.8” x 15.75” and weighs 3lbs with all contents. Covered by 12 Month Money Back Guarantee and 5 Year Warranty on this device. For use on PVC, CPVC, Kitex, copper, or galvanized pipes outdoors.

Below are three payment options for your convenience. The "Credit Card Purchase" is the easiest method to use. The provision of the PayPal payment option is for customers who wish to use their PayPal account, however, we still encourage customers to use the first option if at all possible. We have also provided Google Checkout again, for those who prefer this method, but again, the "Credit Card Purchase" option is perferred. Payments with PayPal eCheck is treated like a personal check and requires a 3-5 day wait period. Please visit the Layaway Page for the specified terms, whereas the Layaway transaction must be completed on the phone, not from the buttons below.

WARNING: Avoid unpatented versions of Jan de Baat Doelman's Scalewatcher®. There are "copycat" units which do not perform the same, whereas they cannot use Scalewatcher® technology. In addition, new companies are relabeling the Small Wonder and 3 Star, to take advantage of our global marketing. They close up or change names and your warranty is instantly worthless. Scalewatcher® cannot honor the warranty of unethically relabeled units.

Please choose your preferred shopping button if you are ready to order. If you are not absolutely sure which model to consider, please call our friendly sales representatives or click the "Which Should I Buy?" form questionaire from above for more assistance.

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