2 minutes for hot water to reach kitchen sink!

Users who are viewing this thread

Martinmbm

New Member
Messages
3
Reaction score
0
Points
1
Location
Michigan
Today I took my 59 year old (female) self into the 2' tall, 2200 SF, crawl space and made a schematic of the hot water supply circuit in our house. I want to improve the 2 minutes it takes for hot water to reach the kitchen tap. We inherited this mess. It looks like previously they tried a second in line hot water heater and a recirculating loop at the hot water heater bottom, but those have both already been disconnected. I attached a sketch (not to scale). Any ideas how to improve this? Thanks! Mari

martinmby-01.jpg
 

Attachments

  • plumb.jpg
    plumb.jpg
    75.7 KB · Views: 27

breplum

Licensed plumbing contractor
Messages
1,074
Reaction score
403
Points
83
Location
San Francisco Bay Area
Options:
1. Dedicated recirculation line with pump.
2. New tankless WH with pump and excellent smart controls built in.
3. Add a pump with hot water bridge. Taco makes one that mounts under the sink and Grundfos makes one that mounts on the WH and has a device that mounts on the fixture in question. Major downside is that controls are limited and your cold water piping is serving as the return part time so it is always warm/hot.
 

jadnashua

Retired Defense Industry Engineer xxx
Messages
32,754
Reaction score
1,171
Points
113
Location
New England
All of the engineered hot water recirculation systems I've seen shut the recirculation off when the incoming water reaches somewhere around 100F, so the cold-water line only gets warm, and depending on how long, maybe not all that far. On mine, flushing the toilet pretty much clears out all of the warm water in the cool line.
 

Jeff H Young

In the Trades
Messages
5,737
Reaction score
1,282
Points
113
Location
92346
reconnect your circ line and pump is the solution unless its plumbed wrong . the drawing too annoying to read sorry.
you should have a line from kitchen sink returning to w/h for it to solve issue
 

Martinmbm

New Member
Messages
3
Reaction score
0
Points
1
Location
Michigan
All of the engineered hot water recirculation systems I've seen shut the recirculation off when the incoming water reaches somewhere around 100F, so the cold-water line only gets warm, and depending on how long, maybe not all that far. On mine, flushing the toilet pretty much clears out all of the warm water in the cool line.
So you're saying the recirc line doesn't really work? I kind of agree. I was hoping to reduce complexity instead of adding it. There is a passive loop in the system and I'm wondering what impact that has? Does it make the situation worse, or doesn't it matter. Also, I was thinking plumb direct to kitchen sink (then washer, then bar) might help...
 

Jadziedzic

Active Member
Messages
308
Reaction score
55
Points
28
Location
New Hampshire
A dedicated recirculation line works very well when it is coupled with a small pump feeding the bottom drain port of the water heater. I used a Bell & Gossett "ecocir e3" recirculating pump which consumes about as much power as an old incandescent night light, and has the ability to run either in thermostatically-controlled or timed operation.
 

Jeff H Young

In the Trades
Messages
5,737
Reaction score
1,282
Points
113
Location
92346
A dedicated recirculation line works very well when it is coupled with a small pump feeding the bottom drain port of the water heater. I used a Bell & Gossett "ecocir e3" recirculating pump which consumes about as much power as an old incandescent night light, and has the ability to run either in thermostatically-controlled or timed operation.

So you're saying the recirc line doesn't really work? I kind of agree. I was hoping to reduce complexity instead of adding it. There is a passive loop in the system and I'm wondering what impact that has? Does it make the situation worse, or doesn't it matter. Also, I was thinking plumb direct to kitchen sink (then washer, then bar) might help...
jadnashuas works, many of them work its very simple martinmbm, I'd re install pump
 
Top
Hey, wait a minute.

This is awkward, but...

It looks like you're using an ad blocker. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If you'd like to support the site, please allow ads.

If any particular ad is your REASON for blocking ads, please let us know. We might be able to do something about it. Thanks.
I've Disabled AdBlock    No Thanks