How to Install An Expansion Tank 

Great video. I was so impressed at how direct and to the point. No long windy walks in the park with this video. So tired of watching videos on something and the presentation is filled in with cute non essential bs. Good job!

my man, you helped me out as a new homeowner

Great video you made it much easier than I was expecting thank you so much. SEMPER-FI

That was a really helpful video

Short and to the point. I already know why and when to use one.

Thank you for this. Watts’ website was the opposite of helpful, and I’ve been charged with figuring out how to install this, despite the other person working in contracting and construction for 30+ years. Nice that this was simple and direct.

The great video! Thanks for Sharing! Hope to see more videos in the future! Thumbs up!

Great job I enjoy good Plumbing work. 👌🏾

It seems that in your region the air in the water heater tank is removed from the bottom of the tank. Learning something new every day.....

I wish my husband watched this video before he installed ours. 😅 Thank you for the video. I subscribed!

Thank you so much for the video.

Thanks for the simplicity...I still think the expansion tank over kill, with the pop off valves serving nearly the same purpose, and many back-flow's BS too...Never once saw a problem where they actually prevented anything...Did HVAC and Bldg Systems Maintenance for 40 plus years and over engineering is abundant...I believe in safety first, but BS is still BS...Sorry for the rant...Thanks again...I love watching the tradesmen.

Thank you bro learn something new ✌️

Danny; can you install an expansion tank on an water heater that is located outside in a water heater enclosure. Also there isn't much room inside the enclosure so the expansion would be mounted outside the enclosure.

Is the Watts etx30 suitable for a furnace boiler system? Or only water heaters? Would I be able to use it right outta the box without pumping it up

Thank you for the video! This is exactly what I needed. A few details I'd like to know. This is how I foresee steps prior to connecting the "T". 1) Turn off the cold water, 2) empty the water heater, 3) remove the pipe (or tube of some sort) from the shut off valve and top of water heater, 4) make the "T" and install. Did I forget anything? Like to see a vid on this procedure if possible but if too simple then I can work with just text. Any other suggestions/recommendations is truly appreciated. Thank you!

Do You need check your relief valve too or not

I'm getting ready to change one a bit of questions if possible

First time I’ve seen flexible water line used..to expansion tank..can I use Pex A. 1/2 or 3/4 for that..

Good work. Hope those stainless flex lines are dielectric to prevent galvanic reaction to the existing copper. I personally would have ran copper flex dielectric flex lines to the heater and hard piped it to the expansion tank with a ball valve. That way you could replace the expansion tank if and when it goes bad. Harder for air to travel down to flush valve also. Would have used PRV valve at the top.

thanks. is it safe to install the expansion tank horizontally? its easier to do. less plumbing

I’m glad you installed it in the proper orientation.

Thank you

How is the air in the bladder vented from the expansion tank with this setup ?

Nice

I wish for once i can spend my money and have someone like you install things the right way without any complications....sigh..

Thanks for the quick and dirty presentation. Can this be installed at the point of the relief valve of the hot water heater provided there's a T and the pressure relief valve is still present?

Would a potable water expansion tank as you used in your video, stop water hammering or do you still need hammer arresters at the fixtures ?

This guy is correct, the pressure tank is on the cold water side is correct. I located mine under my kitchen sink, on the cold water side. It doesn't have to mounted on top of your water heater. Could be any where on the cold water line in the house in front the water pressure regulator if you have one. Just a couple of flex hoses and a water T can make mounting and installing and servicing the tank, easy. Plumbers like the water heater mount because they get paid for changing the plumbing. Gotta use your brain people.... they reduce the pressure on your thermal/pressure safety valve and revents it from leaking.

Hey Danny, video really helps, question, do you have to drain your water tank to open up the cold water pipe after I close the cut off value?

what is the pressure psi?

Great job and explanation. I like that you strapped it to a stud. Question: is it better to mount the expansion tank with the water inlet on top or the bottom? I thought to Mount the inlet on the bottom (like well pressure tanks) or does it not matter?

Does california code still require you to install one if the water heater has a t and p valve?

Hello, what happen if installing expansion tank upstream of full open valve to water heater ? thanks

Whats the correct way to install the tank, like he did, or upsidedown?

Would I need a check valve somewhere? Before expansion tank or after it?

Was that OJ's Crib? HAHA

How do you pick the size of the expansion tank? Is it based on the size of the water heater?

question. I just install mine but I put the tee on top of the pressure tank and copper to the valve and to the waterheater. ? did I install it wrong or did I just wasted more copper only?

Can't you install tbis tank as is? With 20 PSI pre charge?? Does it have to be the same as incoming water pressure from thecity or after the prv???

Does the expansion tank have to be above the inlet or can it be below the top of the tank if space is limited?

Is this my why tank keeps popping the value?

I have installed expansion tank in the hot water line on a tankless water heater, it that ok ?

Flexible water lines will not pass inspection in NJ, USA

WOW water pipe outside scary it must never freeze.

I now know why I want a professional to do it.

You didn't tell us to turn the water off and how to do it

First of all watts tanks are inferior.amtrol is the definitive product nowadays.good job checking the pressure beforehand.and he installed it right end up.it calls for these tanks to be vertically mounted with schrader valve down.so many vids show the tank mounted upside down.if you have an accident and need to call your insurance company they will deny your claim due to improper installation

OJ s old house?

What you did will work 100% as well as any other installation for sure however, this is diy quality for anyone that wants professional level results. Just a few tips (take it or leave it). Straps on tank: line up the tensioner bolts and possibly angle them out of sight. Copper tee: very unnecessary, there are much easier ways to install a tee than soldering one. Not to mention, that was a very poor soldering job, especially considering you did that on a table. Flex hose to expansion tank: completely unnecessary and much more costly than piping into the tank and only having one hose to the water heater. Also, that hose wasn’t even long enough or you could’ve mounted the tank lower. I also would’ve patch the holes before mounting anything. More could be said but just a few suggestions like I said, that install is perfectly fine as far as mechanically speaking 👍🏻

Should not that expansion tank > > be upside down ?

Did you install it upside down? I have one installed like that (water connection on Top) and two plumbers have commented to me that it was an incorrect installation --saying the water tubing should be on the Bottom [i.e. turn tank upside down]

You never said why you are installing ex tank..

It's upside down.

I have come to not use rubber bladder based thermal expansion tanks. They fail more often than anything else. Hot water systems just get an overpressure valve at the top of the system, bleeding off a gulp or two every now and then. Heating systems I keep open to atmosphere with a small water tank on the top side, that can equalize the volumes. Or slightly pressured buy that partially filled tank. But I will never use these rubber bladder BS again.