Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 03-17-2010, 10:39 PM   #1
Member
 
Join Date: Jan 2007
Posts: 1,787
Share |
Default

Tankless Hot Water Heater


I used to hear that tankless hot water heaters can't provide the same amount of hot water that a tank can provide for larger homes (e.g 4 BR, 3.5 BA). Has that now changed?

Here's an example of a Rinnai tankless model that supposedly can put out the equivalent of six 40 gal hot water heaters in one hour.

Also, they supposedly are good for 25 years.

http://www.dontdig.com/tanklessheating.php?animation=1

How much would one cost installed?

handy man88 is offline   Reply With Quote
Old 03-18-2010, 09:24 AM   #2
Doing it myself
 
Alan's Avatar
 
Join Date: Apr 2006
Location: Crescent City, CA
Posts: 3,750
Send a message via AIM to Alan Send a message via MSN to Alan
Default

Tankless Hot Water Heater


They are based on a rate of flow at a certain delta T which depends on your incoming water temperature. You will essentially be feeding an entire house through a 1/2" heat exchanger coil.

__________________
Journeyman Plumber
Alan is offline   Reply With Quote
Old 03-19-2010, 09:00 PM   #3
Member
 
Join Date: Apr 2008
Posts: 78
Default

Tankless Hot Water Heater


I'll bet you are looking at over $3000 installed. I put one in my self, it will supply 2 things using water at once. I bought a refurb unit and it was almost $800 + chimney (stainless steel) and electrical. I spent $1500 as a DIY project. You can buy a lot of water heaters for $3000...
Having said that I love having an endless supply of hot water and I would do it again.
UFoPilot is offline   Reply With Quote
Old 03-19-2010, 09:27 PM   #4
Member
 
Join Date: Jan 2007
Posts: 1,787
Default

Tankless Hot Water Heater


Quote:
Originally Posted by UFoPilot View Post
I'll bet you are looking at over $3000 installed. I put one in my self, it will supply 2 things using water at once. I bought a refurb unit and it was almost $800 + chimney (stainless steel) and electrical. I spent $1500 as a DIY project. You can buy a lot of water heaters for $3000...
Having said that I love having an endless supply of hot water and I would do it again.
How long will it take you to make up for the cost savings in gas?
handy man88 is offline   Reply With Quote
Old 03-19-2010, 10:21 PM   #5
Member
 
Join Date: Apr 2008
Posts: 78
Default

Tankless Hot Water Heater


Quote:
Originally Posted by handy man88 View Post
How long will it take you to make up for the cost savings in gas?
I probably save about $500 a year in propane. It will pay for itself but it will take a long time.
UFoPilot is offline   Reply With Quote
Old 03-20-2010, 05:38 AM   #6
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 25,052
Default

Tankless Hot Water Heater


Gas tankless water heaters will supply continuous hot water as long as you don't exceed their GPM flow rate.

How much you will save depends on how much your hot water demand is.

beenthere is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cold water going into Tankless Water Heater TrustedHandyman Plumbing 1 01-07-2010 01:27 PM
Tankless Water Heater Problem Thalweg Plumbing 4 12-10-2009 12:18 PM
Tankless water heater proper pipe size? gante Plumbing 5 04-06-2009 02:28 PM
tankless water heater maintenance ericadami Plumbing 8 11-24-2008 01:42 PM
Tankless water heater - NEED HELP! LakersFreak Plumbing 39 11-16-2008 08:49 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.