Great Filter replacements
"The filters fit perfect and offer the best tasting water we have had in a long time."
Microline TFC-400 RO Replacement Filter Kit with RO Membrane
Q&As
Microline TFC-400 RO Replacement Filter Kit with RO Membrane
Q&As
Part Number:
YSM-MIC400
Complete RO filter replacement kit includes membrane to restore Microline TFC 400 system performance.
Read More
Subscription Details
Automatic deliveries and charges at your selected frequency. Skip, reschedule, or cancel through your subscription account. View subscription details.
IN STOCK
Description
1-Year Replacement Filter Kit with RO Membrane for Microline TFC-400 Reverse Osmosis System
INCLUDES:
- STAGE 1 - 1x 5 micron Sediment Pre-Filter (S7011) - Replace Every 12 Months
- STAGE 2 - 1x Sediment/Carbon Pre-Filter (S7028) - Replace Every 12 Months
- STAGE 3 - 1x RO Membrane TFC 50 GPD (S1229RS) - Replace Every 24 Months
- STAGE 4 - 1x Inline Carbon GAC Post Filter (S7206W-JG) - Replace Every 12 Months
We offer two replacement filter kits so you can get exactly what you need — and avoid paying for filters you don’t.
-
Year 1 Kit found on this page (Includes RO Membrane):
Ideal for your first full replacement, this kit includes all filters plus the RO membrane, which typically lasts up to 24 months. -
Year 2 Kit (Without RO Membrane):
After the first year, you only need to replace the pre- and post-filters, since the RO membrane is still good for another year. This kit helps you save money while keeping your system performing like new.
By offering two kits, we make it easy to follow the recommended replacement schedule and reduce waste — so you only buy what your system truly needs.
*Filters may need to be replaced more often than indicated, depending on incoming water contaminant levels and volume of water being treated. Read the full review for the Microline TFC-400 RO drinking water system.
This Item Fits These Select Systems
Replacements & Add Ons
Replacements for This Item
View All System Parts
Overall rating: 4.892857 / 5 from 28 reviews.
AI Generated Review Summary
Summary topics
Review topics: [quality, shipping, price, tasting, issues, work, service, replacement, filters, water, membrane, support].
Review highlights
Reviews
Great Filter replacements
"The filters fit perfect and offer the best tasting water we have had in a long time."
Perfect match
"Received the filters, super easy change out of old for new. Great service and product quality and price was excellent!"
reverse o filters and uv lamp
"i have received my order. everything went well"
Excellent Customer Service
"ESP products work so great and our well water tastes amazing! Additionally, ESP has excellent customer service!"
Good No Issues
"Everything worked out good."
Works Great and easy to install
"This is my third year purchasing this product. No problems and all is working well."
Great filters. Only set that
"Great filters. Only set that was an actual replacement for my RO system."
the water to the fridge
"the water to the fridge is fine, but there is definitely a strange taste coming from the tap by the sink that is fed through the stage 4 charcoal filter."
Arrived promptly and was easy
"Arrived promptly and was easy to install."
Received all the correct parts
"Received all the correct parts and everything went well"
Q&A
Q:
What is included in the Microline TFC-400 kit YSM-MIC400?
A:
It includes S7011 sediment, S7028 sediment/carbon prefilter, S1229RS 50 GPD membrane, and S7206W-JG inline GAC post-filter.
Q:
Which RO system does this replacement kit fit?
A:
The catalog lists TFC-400, TFC-400-ESP. Check the exact model or part number on the existing equipment before ordering Microline TFC-400 kit YSM-MIC400.
Q:
Does this kit include the RO membrane?
A:
Yes. It includes the S1229RS 50 GPD membrane. Choose the membrane-sold-separately kit when the existing membrane is not yet due.
Q:
How often should the filters in this kit be replaced?
A:
Prefilters and post-filters are typically replaced every 6 to 12 months. RO membranes commonly last about 24 months, although incoming water quality and usage can shorten either interval.
Q:
What should I check before ordering this RO filter kit?
A:
Match the system model, individual filter part numbers, membrane capacity, and connection style. Do not rely only on the number of filtration stages because systems with the same stage count can use different components.
Q:
What should I do after replacing the filters?
A:
Inspect and lubricate reusable O-rings with a light coating of food-grade silicone, reassemble the housings or twist-in cartridges, restore water slowly, check for leaks, and flush according to the system instructions.
