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Rinnai 103000038
Rinnai 103000038
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Rinnai 3/4" - Scale Cutter Water Conditioning System

Model:

103000038

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$352.23
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
In-Stock
Ships Today, June 11th
Shipping to43085
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$59 / Month
Suggested monthly payments with 6 month financing.
Rinnai 3/4
Rinnai 3/4" - Scale Cutter Water Conditioning System
Model: 103000038
$352.23
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Features
Specifications
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Features

    The SFES Scale Cutter Water Conditioning system works to prevent limescale buildup and corrosion within the water heating unit. Scale Cutter reduces the minerals in solution, coats surfaces with corrosion control layer, and helps to alter, soften and remove existing limescale. This system offers many of the traditional benefits of a water softener at a lower cost.
  • Product Includes
  • (1) Cartridge Housing (Inlet/Outlet Head and Transparent Housing w/ O-ring)
  • (1) Scale Cutter Water Conditioning Cartridge (Model 103000039)
  • (1) Mounting Bracket
  • (4) Mounting Screws
  • (1) Filter Housing Wrench
California residents see
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm..
For more information go to: www.p65Warnings.ca.gov

Specifications

103000038
specs product image PID-25239
Overview
Product Category
Water Heater Accessories
UPC
766156008061
General Information
Product Category
Water Heater Accessories
Dimensions
Product Height
13 1/2 Inches
Product Width
5 Inches
Product Depth
5 Inches
Product Weight
4.4 Pounds
Warranty Information
Parts Warranty Learn More
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years

Reviews

(5)
Rinnai 103000038 Reviews & Ratings
Verified Buyer
Verified Buyer
Very Good Product
By Earl I 
Maine
Purchased 06/22/2022 | 
Review Posted 02/24/2023 
I installed this when we put in the new Tankless water heater from here I was skeptical at first but I can see now it is dissolving the scale in the water lines get one, you wont be sorry
Earl I Recommends This
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Rating Breakdown
Features
5/5
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Quality
5/5
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Performance
5/5
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Value
5/5
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Pros:
Easy To Use, I'd Buy It Again
Cons:
None
Verified Buyer
Verified Buyer
Best Product
By Sandra G 
Swainsboro, Georgia
Purchased 02/22/2021 | 
Review Posted 04/10/2021 
Best purchase we made
Sandra G Recommends This
Was this review helpful?
Rating Breakdown
Features
5/5
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Quality
5/5
icon-review-marker
Performance
5/5
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Value
5/5
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Pros:
Easy To Use, Quiet, Price, Id Buy It Again
Verified Buyer
Verified Buyer
Scale Cutter Notes
By Nancy M 
big bear lake, California
Purchased 04/07/2020 | 
Review Posted 04/28/2020 
Our plumber had no trouble installing the Scale Cutter filter. System is running very well since installed, no more sudden cold water bursts in the shower. We have a very high calcium level in our local well water, so this is a good addition to our tankless. I have to say however, that after a few weeks, the replaceable filter is already down by about 25%. At $100 per replacement filter, I am concerned about how often this will need replacement. Had hoped it would last at least 6 months, but that does not look to be the case.
Nancy M Recommends This
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Expert Response
I apologize for the inconvenience. If you're water has a high mineral content you may need to replace the filter more frequently. Please feel free to call us for further assistance.
Ken, the eComfort Product Expert
Ken D.
eComfort Product Expert
Rating Breakdown
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
4/5
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Pros:
Easy To Use, Quiet
Verified Buyer
Verified Buyer
Incredible Improvement To My Tankless Water Heater
By Veronica C 
DALLAS, Texas
Purchased 03/03/2020 | 
Review Posted 03/25/2020 
I just installed this scale cutter and would not attempt to operate another tankless water heater without one. I had one tankless go out after 6 years. That unit was operating through a water softener. Not enough. In fact, I am fairly sure the softener was a contributing factor to the demise of the water heater. Never again.
Veronica C Recommends This
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Rating Breakdown
Features
5/5
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Quality
5/5
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Performance
5/5
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Value
4/5
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Pros:
Easy To Use, Exceeded Expectations, High Quality, Id Buy It Again
Cons:
Expensive
Verified Buyer
Verified Buyer
Replacement for Rinnai 103000022
By Lloyd V. 
IL
Review Posted 04/27/2015 
The water conditioning system for my Rinnai tankless hot water heater used the Rinnai 103000022 scale control system, with replacement cartridge 103000025. When I tried to buy a replacement cartridge, I found that both 22 and 25 were discontinued by Rinnai and both were unavailable. This unit 103000038 is the replacement unit for 22. It was a perfect fit in the plumbing for the old 22 - same physical dimensions and piping size. This is a recent replacement, so too early to judge the effectiveness.

I am not happy that Rinnai discontinued the 22 and 25 units and particularly that there was no replacement cartridge available for the 22 unit. Rinnai said that 103000039, the replacement cartridge for 103000038, would fit on the 22 unit. Not true. So I was forced to replace 22 with 38. Fortunately the 38 unit was a perfect fit.
Was this review helpful?
Rating Breakdown
Features
5/5
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Quality
5/5
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Performance
5/5
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Value
5/5
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Product Q&A

(1)
Expert avatar photo
Product Questions Answered by Ken, the eComfort Product Expert
How often do you need the change the filter?
Tom 
from California 
November 18, 2015

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