Product images: Amazon listings
Written from the listing's specs, not from our own use · How we rate
The Chromex Flush Kit, Concentrated Vinegar packs a 1/6 HP pump and 6 ft hoses, the descaling solution in the box and a 6-gallon pail into one flush kit. A good match for a hard-water house that flushes every year, rated 7.4/10 on its documented specs.
| Brand | Chromex |
|---|---|
| Category | Service kits, valves & parts |
| Pump | 1/6 HP |
| Hoses | 6 ft |
| Sold for | Rinnai, Bosch and Noritz |
| ASIN | B0CM2GZB5Q |
Full listing title: Chromex Tankless Water Heater Flush Kit with NSF Certified Concentrated Vinegar, Dilutes to 4 Gallons and 1/6HP Extra Strength Pump
Rated from the listing's specs, no buyer reviews yet
What it's made for: a hard-water house that flushes every year.
Two flush kits close to it on our rating, each with a dated price.
The pump the listing states. It pushes the solution through the heat exchanger and back into the pail for about an hour; the hoses have to reach from the service valves down to the bucket.
What it has going for it
Solution included. Everything for the first flush in one box: pump, hoses and the descaler.
6-gallon pail. The bucket the solution circulates through. A lid keeps the splashes off the garage floor.
Yourself: the kit gives you a 1/6 HP pump, 6 ft hoses, a 6-gallon pail and the descaler, per the listing. With service valves on the heater, it's an hour with a bucket on the garage floor.
Book the plumber: if your heater has no service valves yet, the first visit is to put them in. After that, this kit does the yearly job.
What the Chromex Flush Kit, Concentrated Vinegar listing names:
In the box, per the listing: A pump, Hoses, A bucket, Descaling solution.
Check these figures against your heater's manual before you order.
On Sep 30, 2026, that price put it in the pricier third of the 10 flush kits we have a recent price for.
The button opens the exact listing (ASIN B0CM2GZB5Q), where today's price, stock and seller apply.
Our take
We like the Chromex Flush Kit, Concentrated Vinegar for a 1/6 HP pump and 6 ft hoses and the descaling solution in the box. No buyer reviews yet, so this Chromex flush kit has to win you over on paper. The catch with the Chromex: without service valves on your heater, there is nothing to hook it up to. We'd pick it if you would rather flush it yourself than book a service call; otherwise, put it next to the Superior Pump 91660 Descaler Pump Kit first.
Before the Chromex Flush Kit, Concentrated Vinegar goes in your cart, check your service valves: its 1/6 HP pump needs isolation valves with service ports on your heater to connect to.
Most makers name the descaler or the vinegar they accept, and some warranties depend on it. Check before you pour.
Look under the heater for two valves with small side ports on the hot and cold lines. That is where the flush hoses attach.
A 1/6 HP pump, 6 ft hoses, a bucket and about an hour. Our flushing and descaling guide walks through the steps.
How the Chromex Flush Kit, Concentrated Vinegar stacks up against the closest alternative, the Superior Pump 91660 Descaler Pump Kit.
| Criterion | Chromex Flush Kit, Concentrated Vinegar | Superior Pump 91660 Descaler Pump Kit |
|---|---|---|
| Our rating | 7.4/10 | 7.3/10 |
| Pump | 1/6 HP | 1/6 HP |
| Hoses | 6 ft | Not stated |
| Pail | 6 gal | 3.5 gal |
On our rating, the Chromex Flush Kit, Concentrated Vinegar comes out ahead (7.4 vs 7.3), and it brings longer hoses (6 ft) on top. Start with this one.
We rate it 7.4/10 (good). The rating comes from its documented listing alone, as no customer-review record is captured yet.
Its listing states a 1/6 HP pump and 6 ft hoses, the descaling solution in the box and a 6-gallon pail. These are the seller's figures, not our measurements: whether it fits your exact heater is worth confirming first.
Your heater's manual: most makers name the descaler or the vinegar they accept, and some warranties depend on it. Check before you pour. Service valves: look under the heater for two valves with small side ports on the hot and cold lines. That is where the flush hoses attach. The setup: a 1/6 HP pump, 6 ft hoses, a bucket and about an hour. Our flushing and descaling guide walks through the steps.
We link to the exact listing on Amazon, where today's price, stock and seller apply. It is an affiliate link, and it has no effect on the rating.
No, we haven't used it ourselves. Everything on this page comes from its listing, read line by line and weighed with our published formula.