Product images: Amazon listings
Written from the listing's specs, not from our own use · How we rate
The Blulu 3" Stainless Direct Vent Kit is a vent kit built around 3" stainless horizontal venting. It is a good match for replacing a damaged vent termination, at 6.3/10 on its documented specs.
| Brand | Blulu |
|---|---|
| Category | Service kits, valves & parts |
| ASIN | B0D8TPCCS3 |
Full listing title: Blulu Stainless Steel Direct Vent Pipe Kit for Tankless Water Heater of 3" Od Elbow and 3" Od x 19.7 Length Horizontal Termination Pipe with Chimney Rain Cap and Clip for Water Heater and Ductwork
Rated from the listing's specs, no buyer reviews yet
What it's made for: replacing a damaged vent termination.
Two vent kits close to it on our rating, each with a dated price.
The size the listing states. Diameter, material and termination all have to be on your heater maker's approved list; venting is the one part of a gas install nobody should improvise.
The listing names 3" venting, stainless steel and a horizontal termination.
Only venting on your heater maker's approved list is safe to use. Match the part number in the installation manual before you order.
What the Blulu 3" Stainless Direct Vent Kit listing names:
Hold the figures against your own heater and its manual before you order.
On Sep 30, 2026, that price put it in the cheaper third of the 7 vent kits we have a recent price for.
Gas and vent work is a job for a licensed installer, and the permit, where your town asks for one, comes on top.
The button opens the exact listing (ASIN B0D8TPCCS3), where today's price, stock and seller apply.
Our take
The Blulu 3" Stainless Direct Vent Kit is about 3" stainless horizontal venting, and it doesn't pretend to be more. No buyer reviews yet, so the Blulu 3" Stainless Direct Vent Kit has to win you over on paper. The catch with this Blulu vent kit: no word on the exact models it fits. We'd pick it if your heater manual lists this exact vent system; otherwise, put it next to the TIKSCIENCE 3" Direct Vent Kit first.
Before you order the Blulu 3" Stainless Direct Vent Kit, check your heater's vent list: it is 3" pipe, and only the vent parts your heater's manual approves are safe.
This is 3" pipe. Only the vent components your heater's manual approves are safe. Same diameter is not enough.
Distance to windows, doors and the ground is set by the manual and local code. Our installation guide covers the questions to ask.
Venting carries exhaust out of the house: a licensed plumber or gas fitter signs it off.
How the Blulu 3" Stainless Direct Vent Kit stacks up against the closest alternative, the TIKSCIENCE 3" Direct Vent Kit.
| Criterion | Blulu 3" Stainless Direct Vent Kit | TIKSCIENCE 3" Direct Vent Kit |
|---|---|---|
| Our rating | 6.3/10 | 6.4/10 |
| Size | 3" | 3" |
Pick the TIKSCIENCE 3" Direct Vent Kit if you want our higher-rated option (6.4/10).
We rate it 6.3/10 (fair). The rating comes from its documented listing alone, as no customer-review record is captured yet.
Its listing states 3" stainless horizontal venting. These are the seller's figures, not our measurements: whether it fits your exact heater is worth confirming first.
Your heater's vent list: this is 3" pipe. Only the vent components your heater's manual approves are safe. Same diameter is not enough. Clearances: distance to windows, doors and the ground is set by the manual and local code. Our installation guide covers the questions to ask. Who installs it: venting carries exhaust out of the house: a licensed plumber or gas fitter signs it off.
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.