How much clearance does a tankless water heater need?

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.

You’ll need to be able to heat at least 5.2 gallons of water. So you’ll need a tankless water heater that can produce at least a 60 degree rise in temperature at 5.2 gallons per minute.

Subsequently, question is, where should a tankless water heater be installed? Possible areas of installation The tankless water heater is small in size. Thus it can be put in small spaces such as under-stair storage areas, closets, in pantries or under the sink. Be careful to ensure that your water heater is convenient and safe in case of future servicing.

Also Know, does a tankless water heater have to be installed on an exterior wall?

Installing a tankless water heater outside frees up indoor space and requires no additional venting. 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.

How close can a water heater be to the wall?

If you have a gas water heater, cut holes into the drywall for the air vents. Place one vent hole 12 inches from the floor in one wall, and the other vent hole 12 inches from the ceiling of the adjoining wall.

What is the downside of a tankless water heater?

Tankless water heaters produce an endless supply of hot water, take up less space, have a lower risk of leaking, are safer, and have a significantly longer lifespan on average. The main disadvantage of tankless water heaters is their upfront cost (unit and installation) is significantly higher than tank-style heaters.

Can a tankless water heater fill a tub?

A small tankless water heater can take a long time to fill a large tub. Third, if for some reason a larger water heater cannot fit, and the properly sized tankless is too expensive, you can add a second standard water heater next to your present tank. Two smaller water heaters can do the job of one big water heater.

What size tankless water heater do I need for a family of 5?

Like, a hot water tank for 5 people will require at least a 60-gallon tank. Since tankless water heaters supply endless hot water, you don’t have to worry about capacity, but instead, think in terms of water flow rate. Gallons Per Minute (GPM) is the key when it comes to sizing tankless water heaters.

Should I replace my water heater with a tankless?

Because there is no tank of heated water continually having to be kept hot, tankless water heaters don’t experience the same standby energy losses that traditional tank water heaters do. Most traditional tank-style water heaters will have an energy factor of about . 67, and will use about 225 therms/year.

What size water heater do I need for a family of 5?

3 – 4 people, you’ll need at least a 50-gallon capacity tank (electric) or a 40-gallon capacity tank (natural gas or liquid propane). If your family size is 5 or more, you’ll need an 80-gallon tank (electric) or a 50-gallon tank (natural gas or liquid propane).

Can a tankless water heater be installed in a closet?

Gas tankless water heaters must not be installed in a room used or designed to be used for sleeping purposes. They must not be installed in clothes closets or in a closet or other confined space opening into a bath or bedroom. No combustion air is derived from the room.

Can you oversize a tankless water heater?

As suggested when selecting a tank-type heater, you don’t want to buy an oversized or undersized tankless water heater, as it will result in unnecessary issues such as the rising upfront price, operating costs and wasted water and energy – affecting your budget and time.

What is the best tankless water heater?

Best Tankless Gas Water Heater Reviews – (Top-Picks) Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater. Rheem RTGH-95DVLN Indoor Direct Vent Tankless Natural Gas Water Heater. Rinnai RUC98iP Ultra Series Propane Tankless Water Heater. Eccotemp i12-NG Tankless Water Heater. Excel TANKLESS LPG GAS WATER HEATER.

How do I keep my tankless water heater from freezing outside?

How to Prevent Your Tankless Water Heater from Freezing Install Your Water Heater in a Warm Place. Drain Your Water Heater. Maintain a Power Source. Consider a Recirculation System. Insulate, Insulate, Insulate. Run a Trickle of Water.

Does electric tankless water heater need venting?

Electric tankless units do not require any type of venting, however, they do require a substantial amount of electricity. Outdoor gas tankless water heaters do not require venting, however, they do require a minimum amount of space around the unit.

Are propane tankless water heaters worth it?

The U.S. Department of Energy estimates gas-fired tankless heaters save an average of $108 in energy costs per year over their traditional tank counterparts, while electric tankless heaters save $44 per year. Rewiring your house can easily add as much as $5,000 to the cost of installing a tankless water heater.

How much does it cost to have a tankless hot water heater installed?

A new tankless water heater costs between $1,500 and $2,000 installed, while a whole house tank costs between $600 and $800. A tankless hot water heater costs around $430 without installation and a traditional heater costs around $440.

Which is better electric or gas tankless water heater?

A tankless electric heater is generally cheaper than a propane tankless heater. It is important to keep in mind that electric tankless water heaters are generally 99%+ thermal efficient, whereas the efficiency rating of most gas tankless heaters, even the better quality units, range from about 80 to 85%.