DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Plumbing Forum > tankless water heater

Thread Tools Search this Thread Display Modes
Old 02-26-2010, 03:50 PM  
Junior Member
Join Date: Apr 2009
Posts: 19
Default tankless water heater


I was interested in any comments on the pros and cons of a gas versus electric tankless water heater.

Is one better than the other? Which performs better and/or is more cost effective? Or, are the equally good in quality, performance and cost?

I live in the Austin, Texas area and have heard the gas tankless water heaters are preferrable, but don't have specifics as to why.

Any recommended brands?

Any approximate cost on the installation? I'm just looking for an approximation, so if the installation say was $1,500, but someone wants to charge $5K then I'll know it is way off base.


-Dman100- is offline  
Reply With Quote
Old 02-26-2010, 04:13 PM  
Wuzzat?'s Avatar
Join Date: Jan 2010
Posts: 2,328
Liked 168 Times on 155 Posts
Likes Given: 94


They click a lot trying to keep up with demand.

The necessary elec. supply for these is very large. 3 GPM of 120F water from 50 F incoming water takes 30 kw, if I didn't make a arith. error.
Online Conversion - Convert just about anything to anything else

With baths it's not bad but with showers you will get cold water on your head occasionally.

A tank heater may lose 50w all the time.

Tankless installed prices in kilobucks

$2.2 =avg
$2.1 =median
half between 1.7 and 2.7

My search terms:
tankless water heater quote price install

Last edited by Wuzzat?; 02-26-2010 at 10:03 PM.
Wuzzat? is offline  
Reply With Quote
Old 02-27-2010, 11:10 AM  
Senior Member
Join Date: Jan 2010
Posts: 211
Liked 14 Times on 13 Posts
Likes Given: 1


I recently moved out an apt. that used an electric tankless water heater, and it never quite worked right. Luckily, the water supply still came through the gas tank heater in the basement, which I had to turn on several times when the tankless unit wasn't working. It quit working twice and required service, and other times it would sporadically give out cold water. On the other hand, my parents new house has two very large electric units and they have no complaints.
swindmill is offline  
Reply With Quote
Old 03-01-2010, 08:56 AM  
Wuzzat?'s Avatar
Join Date: Jan 2010
Posts: 2,328
Liked 168 Times on 155 Posts
Likes Given: 94


Originally Posted by sashun View Post
you must wait between 8 and 12 seconds to warm up.
At 1 GPM this would be the water contained in 20' of 1/2" ID pipe, but you'd have the same problem with a tank heater.
Wuzzat? is offline  
Reply With Quote

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

Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Rinnai tankless water heater and a power outage rolltrain General Appliance Discussion 5 01-25-2013 07:58 PM
replace gas water heater with ELEC tankless?? cubfan23 HVAC 5 08-26-2009 07:41 PM
Tankless water heater??? Outbacker General Appliance Discussion 6 06-30-2008 06:25 AM
pros/cons for tankless water heater ALPS Plumbing Forum 12 05-24-2008 09:07 PM