Apply to be a TradeMaster!
Main product image of Sentinel X400 System Restorer (Quart)
Magnifying glass
Hover image to zoom

Sentinel X400 System Restorer (Quart)

Brand:
Sentinel
SKU:
X400-QT
Rating:
(13)
Q&A:
(1)
Sentinel X400 System Restorer (Quart)
Magnifying glass
Hover image to zoom
$37.04 each
In Stock
In Stock
Get 20 Tue, Jun 9
Order by today, receive Tuesday
Free Shipping On orders over $99
Easy Returns No restocking fee for 90 days

Product Highlights

Product Highlight: Volume
32 oz.

Description

Sentinel X400 System Restorer is specifically designed for cleaning older closed loop hydronic heating systems. It is a non-acid treatment which restores circulation to radiators and pipework. Its ruthlessly efficient formula shifts built-up magnetite sludge, eliminating cold spots in radiators and restoring proper heat distribution.

KEY FEATURES:
  • Restores systems suffering with circulation problems
  • Eliminates radiator cold spots
  • Prepares older systems for the installation of new components
  • Has a non-acid formula which does not cause pin-holing or leaks
  • Can be used in all types of indirect heating systems, including those containing aluminium
1 quart of Sentinel X400 is sufficient to treat a typical residential system of 25 gallon. Larger systems should be dosed at 1% of system water. To clean an existing system, Sentinel X400 should be circulated, preferably at normal operating temperature, with all valves open and the pump turned to maximum flow for a minimum period of 2 hours or until satisfactory performance is restored.

Where systems are badly fouled, a longer period of circulation (e.g., up to 4 weeks) is recommended, but the product will not clear a completely blocked pipe. There is no limit to the time for which the product can safely be left in the system.

Rapid cleaning may be carried out if Sentinel X400 is used in conjunction with a power-flushing device.

Flush the system before refilling and treating with Sentinel X100 Inhibitor.

Specs

Product Type:

Cleaner

Application:

Heating

Volume:

32 oz.

Contact

Help Face
CALL US
Question? Call or text 888-757-4774
+
Help Face

Questions?

Speak with a real person who will go out of the way to help!
Call or text 888-757-4774
MondayThursday
8am7:45pm
Friday
9am7:45pm
SaturdaySunday
9am5:45pm

Response by Tue

Compare Similar Products

Brand
Product Type
Application
Volume
CURRENT ITEM
Product Image of Sentinel X400 System Restorer (Quart)
Sentinel X400 System Restorer (Quart)
SKU: X400-QT
(13)
Cleaner
Heating
32 oz.
Cleaner
Heating
128 oz.

You May Also Need

X100 Quick Test Kit
SKU: X100-QUICKTEST
Sentinel

Product Reviews

4.46 out of 13 reviews
85% would recommend this product
4.46
out of 13 Reviews
85% would recommend this product
WRITE A REVIEW
5 star
85%
4 star
0%
3 star
0%
2 star
8%
1 star
8%
WRITE A REVIEW

Most Liked Positive Review

Excellent Product

Yes it does require draining but typically that's how you flush out the dirt it has removed. I treat a system at the beginning of the heating season with the appropriate amount. Usually one bottle. Leave it in all season and drain it out the following fall. Refill system and add the Corrosion inhibiter from the same company. You now have a treated system. Just check ph with the strips from the same company every year or two. These days with the price of components, you simply have to add boiler water treatment to the mix of preventative maintenance.
VS

Most Liked Negative Review

I had higher hopes than this product could perform

My system was ketteling, popping, etc. I followed the directions and even left it in the system for 1 week, while running, just hoping it would clean the system. Upon flushing, I observed very little debris or cloudiness. It appears that it did not dissolve much, if any, real settlement in the tank, which is where the buildup causing the ketteling would be.
Showing 1-10 of 13 reviews

I had higher hopes than this product could perform

My system was ketteling, popping, etc. I followed the directions and even left it in the system for 1 week, while running, just hoping it would clean the system. Upon flushing, I observed very little debris or cloudiness. It appears that it did not dissolve much, if any, real settlement in the tank, which is where the buildup causing the ketteling would be.
Buckshot
MI
6 months ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Worked well on a system clean that was long overdue

Cast iron boiler/copper convectors in a residential home that was making kettling sounds. Poured entire bottle in via the top of a super vent. Let it circulate for two hours. Purged loop by loop from top down. Added inhibitor when I was done. Very happy with result, kettling noise eliminated. System response is faster, boiler heats up quicker.
OneManShow
Staten Island, NY
7 months ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Great service

I am very happy with the service I received. I ordered X400 inhibitor for my boiler (radiant floor heating) and discovered I goofed. UPS returned it and I ordered X100. That, too, came the next day. Very efficient and understanding.
Don't have one
45459
8 months ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Works just as advertised.

Our system has not had the maintenace it needed. I put this in and let it run for two weeks. Once I drained and refilled the system, it works like it was new! I would highly recommend this product.
Sonny M
Boyne City, MI
1 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Effective

It quiets the system, but I'm not clear on the risks of leaving it in. X200 didn't work for me and I'm not totally clear on a step-by-step process for keeping the system quiet and controlling the risk of corrosion.
Kettling
NY
4 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

protect your system's longevity

it's the "right tool for the job"
tmanlenny
ny
5 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

I would buy this product again.

Use this product to clean an older or used boiler to recondition internal parts that can not be cleaned easily.
Radiant Heat Guy
Apollo, PA
5 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

I would buy this again

Best product for cleaning older boilers.
Radiant Heat Guy
Apollo, PA
5 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Seemed to clean "gunk" out

My hydronic heating system needed additional items added to the system. After cutting into a couple of the 55 year old pipes there was gunk. So I added this to the system, ran it for three days and then flushed the system. The product lived up to it's claim of cleaning while suspending contaminants as the water was brown with slight rust red. I did a supplemental flush two days latter and water was mostly clear showing one treatment did the job.
ClayR
Camden, NC
6 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

I would not but this product again.

Added to my system and circulated only through 2 heat exchangers with a pump. It did nothing to anything.
Elwood
Blackwater, VA
6 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Product Q&A

1 Question
1 Question
ASK A QUESTION

Q: How do you determine how much of the system restorer to use?

Asked by Jerry 10 years ago

Add your answer

* Required Field
Verified Author and ReplyVerified Reply- SupplyHouse Staff

1 quart of Sentinel X400 is sufficient to treat a typical residential system of 25 gallons. Larger systems should be dosed at 1% of system water.

Was this review helpful to you?
Free Shipping
On orders over $99
We offer flexible shipping and scheduling options, up-to-date delivery estimates, and free ground shipping on any order over $99 to make sure your order gets to you on-time, for less.
Shipping Policy
Easy Returns
Returning items is as simple as 1-2-3
Ordered the wrong product? Item damaged in transit? Our 3-step process makes returning products easy – even up to a year after purchase – with no restocking fees on returns made within 90 days.
Return Policy