Tankless water heaters can vent through the roof or a side wall, creating more flexibility and options for placement. Traditional gas tank water heater require venting through the roof. Tankless water heaters use fans to blow exhaust from the unit horizontally, allowing vents to terminate on the side of a house.
What is the best way to vent a tankless water heater?
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Can you use PVC to vent a tankless water heater?
In most cases, PVC makes a great venting material. It’s the least expensive option and is easy to install. And it’s a good reason to consider a high-efficiency condensing unit.
Can you vent a tankless water heater vertically?
On the other hand, tankless hot water heaters can use fans to blow the exhaust air vertically, or horizontally, depending on the buyer’s preferences. This is because they use a combustion fan that can actually blow the hot exhaust air in any direction.
What type of vent does a tankless water heater use?
Indoor gas tankless water heaters need to be vented. All indoor models have an exhaust vent. Indoor models also need a fresh air intake either from a direct vent or a power vent. Direct vent models draw fresh air from outside and can be installed in small spaces.
Does tankless water heater need to vent outside?
4. Outdoor tankless water heaters don’t need venting. In warmer climates, it’s easy to install a tankless water heater outdoors, with no additional venting required. Tankless units are designed to withstand below-freezing temperatures through self-warming capabilities that prevent freezing and cracking.
How far does a tankless water heater vent need to be from a window?
Indoor Installations. A tankless water heater requires a 4-foot clearance from the side or below a door or window that opens, unless the unit is directly vented to the outside. If the water heater is installed above the door or window, it needs 12 inches of clearance.
Can you use ABS to vent a tankless water heater?
The purpose of this technical bulletin is to clarify that ABS schedule 40 pipe is approved for use on the combustion air intake pipe and fittings for Rinnai Condensing Tankless Water heaters.
How high does a water heater vent need to be?
For a single-wall pipe, you need 6″ clearance, and you cannot pass it through a ceiling, floor, or wall unless it’s masonry or concrete (non-combustible). For the draft hood connection, you need to allow for at least 12″ of vertical vent before throwing an elbow fitting in the line.
Can you vent tankless water heater through old water heater vent?
The vent pipe must be made of stainless steel designed for venting corrosive gases. The standard galvanized vent from your old storage tank heater would quickly rust away if your tankless heater vented through it.
What is the downside of a tankless water heater?
The main disadvantage of tankless water heaters is their upfront cost (unit and installation) is significantly higher than tank-style heaters. Including installation, tankless water heaters cost 3 times more than tank-style water heaters on average.
Can a tankless water heater be enclosed?
Electric tankless water heaters are designed to be installed indoors in the garage, basement, or interior wall. Both natural and propane gas tankless water heaters have indoor and outdoor models. Indoor models can also be installed in the garage, basement, or the exterior wall’s interior side to provide venting.
Can a tankless water heater be installed in a closet?
Your tankless water heater can be installed just about anywhere! Due to the small size of your water heater, it can be mounted in many small spaces, including closets, under sinks, in pantries, or under stair storage areas.
How much room do you need around a tankless water heater?
It is true that tankless water heaters do not require a lot of space. A large unit requires an area no larger than 24 inches square and ex- tends from the wall by about 8 to 10 inches.
How close can a tankless water heater be to an electrical panel?
The only code requirements I’ve found regarding clearances around an electrical panel are allowing at least a 30″ working space (side to side).
Does a water heater need a vented door?
If the water heater needs more air than is available in the room, you will need vents or a louvered door connected to another part of the house or the outdoors. In most cases, you will need two vents, one located within 12 inches of the ceiling and another within 12 inches of the floor.
What happens if a water heater is not vented properly?
A vent connector is the thing that takes the exhaust gases from the top of the water heater (draft hood) to the vent. If a vent connector isn’t properly installed, the potential for the water heater to backdraft increases.
Do electric tankless water heaters need a vent?
No. Unlike gas tankless water heaters and gas traditional tank style water heaters, electric tankless water heaters do not require any venting. This is often one of the deciding factors when choosing whether you should purchase a gas or electric tankless water heater.
