HOW TO: Get Hot Water in Seconds

Doesn't this system mean that you will have Temped water in the cold water line when you want an Cold drink of water? If you don't want Temped cold water you would need to run a return line back to the tank. I'm I incorrect in my understanding?

had one of these units for 16 years. Pump works correctly but the valve at the end of the line is another matter. I'm on a well so have high alkaline water. Once per year I must pull the valve and replace it. It gets fouled with alkaline. I take the removed unit, soak it in white vinegar for about 24 hours and force compressed air through it to make sure it is open. I store the unit for the next year. I have a water softener, 5 micro water filter and use a RO filter for drinking water.

I bought one way back, those days the PUMP & bypass valve was all, you had to go purchase hoses, NEW ones NOW INCLUDE THOSE HOSES, THEN GRUNDFOSS SENT ME SOME PROMO & another bypass valve , so upstairs , the lines & bypass valve ore under the sink,so I get hot water quickly @ sink,bathtub& a shower , the other is under the sink on 1st floor & KITCHEN SINK. It’s set off 2 am,on 6 am, works just fine , 🇳🇴🇳🇴🇺🇸🇺🇸

This system works if you have a pre-existing home or if you can’t get to the plumbing lines anymore. However if you can there is a much much better much higher efficiency system. With the better system the pump only runs when you enter either your bathroom or your laundry room or wherever you are going to use hot water. If you use a timer it seems like it’s never on when you need it. So again use the system he’s explaining if you have no other way otherwise use the better system there is just no comparison. With his system if you’re gone for a couple of weeks and forget to shut the pump off it runs every day even though you’re not home with the better system the pump runs only just before you start to draw hot water.

Does this work with a water softener already installed?

Fugazi

Can this be used on a tankless water heater?

with this work with a mixing (anti scold) by pass value?

Seems my AO Smith water heater has a built in heat trap so this system won't work for me.

can this be used on a tankless heater? my kitchen takes 3 min to get warm . waiting water. or do I need a circulating line on the kitchen going back to the tank? or just this pump will do it? thanks

This is great but here in the summer in Arizona the cold water turns warm. I turn my water heater to vacation mode at 60 degrees and don't need 110 degree hot water. The dishwasher already heats for cleaning and a cool shower is more comfortable in the summer. I'm originally from Washington state so I really miss having cold water in the summer.

Can I have 2 bi pass valves on 1 recirculating pump

Where do you install bypass valve?

yes, you explained this clearly..... gonna buy one asap

I don't get it. What are you bypassing from where and to where and how is it faster??

That was awesome

thansk

And then you will have "warm cold water:

Could this be used to create in floor heating? I live in cooler climate, Montana, and also worry about pipes in crawl space freezing

I have a question: Imagine that you live in an older home and you are unable to determine which hot water fixture is the furthest fixture away from the water heater. If I guess wrong will this device still provide benefits?

Will this system work if i only had the sensor valve at furthest fixture, without a recirc pump installed?.

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Recently purchased an 8 yr. old custom home with the recirculation pump installed but no sensor at the other end of the house. I installed the sensor and then we had instant hot water. The previous owner had the pump set in the 'on' position, (but he had no sensor). I didn't change the setting when I installed the sensor. Our house has a propane tank for gas heating. Tank filled right after purchase. Within 6 weeks we had burned through over 200 gallons of propane, which is over $700. Have a gas furnace for heat, but are conservative on heat settings, not on at night at all. Gas water heater, and gas cook top. That's it. Propane Co. tested, had no leaks. They're only guesstimate is 50 gal water heater running 25/7 recirculating caused the excessive propane usage. Sound likely??

Could you make it with a flow switch instead of a timer? We are retired and don't have set times that we need hot water in the kitchen.

So, where the hell does the bypass valve go???

How do I remove that thing? I don’t want to use the recirculating pump anymore so I unplugged it but I am still getting hot water instantly at the sink that has bypass valve under it. I don’t want the hot water recirculating at all anymore. Can I just turn off the water that sink? It’s still coming out.

But the recirculating pump will be working at least 12-15 hours per day, 7 days per week, 365 days per year - and that's a lot of electricity wasted just to have hot water on demand. Wouldn't a small tankless water heater at each sink be more feasible?

I have hot water coming from the cold side after installing the bypass I'll get hot water from the cold side hot water from outside

Installed circuit pump and bypassed

When the valve closes, isn't the pump then pumping against a closed system? Is that not bad for the pump?

Can this work with a Rinnai R75i on demand propane HW heater? Is there a different arrangement? The original HW design of my house is root and branch but the large addition we built are all home runs with Pex. If there is a system for on demand propane HW heaters I can see it being a plus for the root and branch system in my original house. I see this video was posted 11 years ago.

Is this part all I need????

How can you tell is the bypass valve is working? The pump sounds like it's running but water not circulating???? Thanks for your help.

This will poison your drinking water.

I have a couple of questions:
#1 So the pump runs sending the hot water to the sensor valve under the sink. When the sensor determines the water coming to it is hot, it shuts off dumping the water down the cold water line. When that sensor valve activates, does the back pressure in the pump line cause the pump to shut off - or does the pump just continue to run until the timer shuts it off?
#2 with the pump off and not running via the timer, will tank water flow through the pump with the pump not running?

im an engineer and that makes NO SENSE.. are you saying somehow youre hooking the hot and cold water together somewhere downline.. and sending coldhot water back to the tank thru the cold water side

Unless your water heater is spiffy clean, and change the corroded anode rod, and flush your water heater several times a year, you will be drinking your potable water (cold side) mixed with your hot water. Imagine a home owner who rarely flushes his/her water heater and drinks from all the contaminates from your water heater. Even if you keep your water heater clean, heavy metal buildup in the water heater usually is several times more than your potable water. The only way to alleviate any health concern is to run a dedicated hot line from the water heater to the farthest plumbing with a re-circulating pump re-routing the hot water back into the drain side of the water heater without ever contaminating the cold water side. However, unless it is a new house already retrofitted with this line, it gets expensive installing a dedicated line.

these are good just not for what its being marketed for, ai:7

Looks a lot like a Watts pump

Sound like the materials aren't going to last but a few years. How often must you replace with hard water? soft water?

my water is low through out my house my house is 2001 will this issue?

Brilliant!

Never mind how insanely energy-wasteful this thing is.

be nice if you told us where that bypass valve went! pretty useless vidoe!!

Where is bypass valve installed

thx live in a high-rise condo. Glad to have the plumber explain the problem with the recycle valve. Management abusing owners saying they need to change the shower controller. Did cross reference also with mainline cold water shut off same hot water problem 45 seconds to the bathtub, 2 minutes to sink. At least i know and others know of the issue. Can't explain why managers of large condos would not k-now or the plumbers themselves. Finally got to google the recycling valve. thanks. What can owners do to [prevent abuse and scams? They still not fixing the issue at their end, yet threaten us with changing bathroom controls. for Failure to maintain. Should be articulated through media the abuse and scams on condo owners, even the additional charges for large apartment rentals if and then.

Can the recirculating pump be used with the heat trap or does it need to be removed before installation?

Sounds wonderful

Great video with even better explanation of how the bypass works.

Can you use this on a tankless hot water heater?