How do you drain a tankless hot water heater?

By Robert Flores / October 26, 2022

Steps to Drain a Tankless Water Heater Turn off the tankless water heater power source. … Close and turn off the water valves connected to your tankless water heater. … On each of the cold and hot water valves you’ll see purge valves. … Attach the hosing lines to each water valve. More items…

Are electric tankless water heaters good in cold climates?

Tankless water heaters are a good option for homes located in both warm weather and cold weather climates. Nov 9, 2021

How often do tankless water heaters need to be flushed?

once a year Over time, a tankless water heater may accumulate mineral build up which can erode the walls inside your tank’s heating chamber. To properly maintain and clean your tankless water heater, it’s important to flush those mineral deposits at least once a year.

How often do you service a tankless water heater?

Just like a tank unit, tankless water heaters need to be flushed once per year. Homeowners with hard water should consider flushing and cleaning the unit even more frequently, perhaps every six to nine months because of the excess amounts of magnesium and calcium found in hard water supplies.

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Why is vinegar blue after descaling?

The vinegar will be a bit blue. This is from tiny amounts of corrosion of the copper of the tubes in heater. The copper imparts the blue color. Nothing to worry about.

Where is the best place to put a tankless water heater?

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.

How long does it take a tankless water heater to thaw?

Once the pipes start to thaw, water will trickle out of the faucet on the hot side and the unit will kick on. On average, it takes 30-60 minutes to thaw a frozen tankless water heater.

Does outside temperature affect water heater?

When it’s cold outside, not only is the air a lower temperature, but it’s a lower temperature underground. These colder temperatures cool down the water that enters your hot water heater, and in effect, your hot water heater has to work harder to heat the chilly water to the right temperature. Oct 18, 2016

Which is the best tankless water heater brand?

The 10 Best Tankless Water Heaters of 2022. EcoSmart ECO 27. Rheem 18kw Tankless Electric Water Heater. Stiebel Eltron DHC Trend Point-of-Use Electric Tankless Water Heaters. Rheem 13kw Tankless Electric Water Heater RTEX-13. Eemax 27kW Electric Tankless. Rinnai RU160iN RU Model Series. More items… • Oct 17, 2022

What does P1 mean on tankless water heater?

flow is too low An Error Code P1 indicates that the water flow is too low. Check your hot water tap flow. The aerators may need to be cleaned. Check and clean the water inlet filter on the tankless unit. Increase the flow rate or adjust the temperature higher.

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How much vinegar do you need to flush a tankless water heater?

Pour 3 gallons of standard white vinegar into your 5-gallon bucket. Submerge your pump and connect the hoses from the pump to the flush valves. Be sure to only run your pump when it is submerged or it may overheat. Turn the pump on and let the vinegar circulate through for 90 minutes.

Is it better to have an indoor or outdoor tankless water heater?

Both indoor and outdoor water heaters are a better choice compared to the conventional heaters, owing to the fact that the former are extremely energy efficient. If you live in a secure area and can make a few modifications to accommodate the unit, you should buy an outdoor unit. Aug 6, 2019

Is it better to install a tankless water heater inside or outside?

Is there a lack of space in your home? If you don’t have room inside your home for a tankless water heater, installing it outside will save you space. This is the best option for homes that have a lack of wall space. May 9, 2019

What size of tankless water heater do I need?

For a home with 1 bathroom, we recommend 6-7 GPM; 2 bathrooms, 8 – 9 GPM; and 3+ bathrooms, 9-11 GPM. In our experience, smaller 4-5 GPM units are suitable for studio apartments and small one bathroom homes or other application specific needs.

Why does my tankless water heater keep getting cold?

Low Water Pressure Low water pressure is one of the most significant reasons why the tankless water heater suddenly cold during the shower. The flow within your device is lower than the activation flow rate required, resulting in the closing down of the gas burner or it may not ignite the burner at all. Jun 22, 2022

Why does the water in my shower go from hot to cold?

Your shower has faulty pressure-balancing valves. Faulty valves are common causes of temperature fluctuations in the shower. The pressure-balancing valves, also known as thermostatic mixing valves (TMV), blend cold water with hot water to provide constant and safe shower temperatures, preventing scalding. Jan 8, 2021

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Do you need a recirculating pump with a tankless water heater?

Some tankless water heater models come with a recirculation pump, while others do not, mostly to reduce the cost of tankless water heaters for consumers. While they will work without one, purchasing a tankless water heater with an integrated recirculation pump is always recommended first. Jul 19, 2022

Is gas or electric better for tankless water heater?

Overall, natural gas tankless water heaters are the choice for greater water heating capacity and electric models are better for small households and bolstering existing systems.

How far does a tankless water heater 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, says Ernie Graves. If the water heater is installed above the door or window, it needs 12 inches of clearance.

Can you install a tankless water heater 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. Oct 29, 2020

Resources

How to Drain a Water Heater (Updated Step by Step for Tank and Tankless) 


https://www.angi.com/articles/using-tankless-water-heaters-cold-climates.htm
https://www.rinnai.us/residential/flushing-my-rinnai-tankless-water-heater
https://grovehvac.com/flush-tankless-water-heater/
https://mikes-woodwork.com/SerranoTankless.htm

Where to Put Your Tankless Water Heater

How To Thaw Tankless Water Heaters (6-Step Guide)

Should I Turn Up My Water Heater in the Winter?


https://www.forbes.com/home-improvement/plumbing/best-tankless-water-heaters/

Rheem Tankless Water Heater Error Codes


https://propsee.com/tutorial/flush-tankless-water-heater

5 Tips to Make the Right Choice Between Indoor and Outdoor Tankless Water Heaters in San Antonio, TX

Indoor vs. Outdoor Tankless Water Heaters

Tankless Water Heater Buyer’s Guide


https://gharpedia.com/blog/tankless-water-heater-goes-cold/

Why Does Hot Water Go Cold in the Shower?


https://www.mrrooter.com/wilmington-nc/about-us/blog/2022/july/do-tankless-water-heaters-needs-recirculation-pu/
https://bfplumbingbayarea.com/blog/gas-vs-electric-tankless-water-heaters/
https://homeguides.sfgate.com/setback-window-tankless-water-heater-105718.html

Can I Install a Tankless Water Heater in a Bathroom

About the author

Robert Flores