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Model: 103000039
Frequency
Frequency
Select how often you will receive your air filters, we offer many options to meet your air quality standards.
Quantity
Quantity
This will be how many filters you receive per delivery.
Quantity
$174.79
In-Stock
Features
- 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
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.
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

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
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

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
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Easy To Use, I'd Buy It Again
Cons:
None

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
5/5
5/5
5/5
5/5
Pros:
Easy To Use, Quiet, Price, Id Buy It Again

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
Was this review helpful?
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 D.
eComfort Product Expert
Rating Breakdown
5/5
5/5
5/5
4/5
Pros:
Easy To Use, Quiet

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
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
4/5
Pros:
Easy To Use, Exceeded Expectations, High Quality, Id Buy It Again
Cons:
Expensive

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.
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
5/5
5/5
5/5
5/5
Product Q&A
(1)

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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Manuals
103000038

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