Can water heater and furnace be vented together?
Many homes are built with the water heater and furnace sharing the same combustion-gases exhaust vent. This practice is common with standard efficiency (80%) furnaces. When installed correctly, this venting arrangement works with an 80% gas furnace (or lower than 80%) + gas water heater.
What type of vent does a tankless water heater use?
Tankless water heaters are vented in two ways: direct vent and power vent. Direct-vent units pull in air from outside the home or building and have two vents, one for intake and one for exhaust.
Does a tankless water heater need a power vent?
No. Unlike gas tankless water heaters and gas traditional tank style water heaters, electric tankless water heaters do not require any venting.
Can you use B vent for tankless water heater?
Most tankless water heaters require a special vent piping material. Type “B” gas vent can not be used on most of these heaters for this reason. Another reason this vent is required is that the vent systems are under pressure from the fan within the heater.
Can you put a tankless water heater 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.
Can you vent a tankless water heater with PVC?
Because tankless water heaters require PVC or special stainless steel piping as the vent material (which is much more expensive than copper, PEX or CPVC), a short venting run is better for both the heater itself, as well as your savings, so many homeowners choose to move the location of their heater closer to an …
How far can you vent a Rinnai tankless water heater?
Vent Options for CU Series
| Vent Options | Vent Material Exhaust Intake | Maximum Vent Length |
|---|---|---|
| Common Vent | Polypropylene* or Schedule 40 PVC/CPVC Polypropylene* or Schedule 40 PVC/CPVC | 65 ft 2-3 Units: 150 ft 4 Units: 70 ft 5-6 Units: 150 ft 7 Units: 70 ft 2-3 Units: 150ft 9-10 Units: 90 ft 11-12 Units: 41 ft |
Is it normal to smell gas from a tankless water heater?
The short answer is, “No.” The chemical mercaptan is added to natural gas to better detect when a leak is occurring. This chemical has a distinct smell and is highly noticeable when a leak does exist.
Where should a tankless water heater be installed?
The ideal location for your water heater is inside the home. Most installations are small and unobtrusive so they will easily fit in a pantry, under the stairs, or under your sink. If you must place the water heater outside, make sure it’s safe from direct sunlight, rain, and insects.
What size tankless water heater do I need to replace a 40 gallon?
| Sizing Guide for Residential Tankless Water heater | ||
|---|---|---|
| Household Occupants | Usage | Capacity Required (Measured in Gallon) |
| 2-3 people | High | 40-50 |
| 3-4 people | Regular/Low | 40 |
| High | 50-75 | |
Can tankless water heater be installed anywhere?
Tankless water heaters can be installed anywhere inside your home. You can even have a tankless water heater in a bathroom! Some families with larger homes choose to install two, one for each floor, for example. Because of their small size, they fit in closets, cabinets, pantries or laundry rooms.
What are the electrical requirements for a tankless water heater?
Unfortunately, the average electric tankless water heater needs at least 120 amps to operate and the average household’s total capacity is 200 amps. This means you will have to upgrade your electrical system to accommodate for the larger load demand, which could cost you up to $1,500.
What size breaker do I need for a tankless water heater?
Typical tankless requires 40-50 amp breaker for each wire. Each wire supplies 1 element. This example requires 3 breakers rated 40-50 amp = 120+ total amps.
Does a tankless water heater use a lot of electricity?
Tankless heaters can be 24-34% more energy-efficient than regular water heaters for households that use 41 gallons or fewer of hot water daily. Tankless heaters can be 8-14% more energy-efficient for households that use around 86 gallons daily.
Does a tankless gas water heater need a dedicated circuit?
Does a tankless gas water heater need a dedicated circuit? Gas tankless water heaters use just a tiny amount of amperage to ignite the flame. Unless the manufacturer requires it, there is no need for a dedicated circuit.
How many amps does a tankless gas water heater draw?
So, how many amps does a tankless water heater draw? Well, the average electric tankless water heater needs at least 120 amps to operate. Unfortunately, the average household’s total capacity is 200 amps.
What are the disadvantages of a tankless water heater?
The primary disadvantage of on demand or instant hot water heaters is the upfront cost. The smaller units that you often see won’t produce enough hot water to serve most households. They’ll only serve one faucet at a time—a problem if you want to shower while the dishwasher is running.
How long does a tankless hot water heater last?
20 years
How much does it cost to switch to a tankless water heater?
A tankless water heater is one way to ensure that you never again experience any unexpected cold showers. But these devices don’t come cheap: the average cost of a tankless water heater, with installation, is approximately $3,000. The total cost depends on the model chosen and whether your home requires retrofitting.
Can a tankless water heater fill a tub?
A tankless water will not run out of hot water unless the flow of water exceeds the heater’s heating ability. To put it more simply, a tankless water heater can fill a tub, but only if another fixture or appliance isn’t also using the hot water.