Commercial grade

Reply

  #1  
Old 11-19-20, 12:21 PM
T
Member
Thread Starter
Join Date: Aug 2014
Posts: 160
Received 0 Votes on 0 Posts
Commercial grade

Hi
I asked plumber for an estimate for water heater replacement. There is nothing wrong but it is old and not enough to fill our tub. I think old one was 40gal.
He offered 50gal commercial grade for $1300 (labor and parts). He said it will allow 4 showers since there are 4 people in the family.
I am more concerned about filling this tub because it is bigger than normal one.
Anyway He said commercial grade 50gal heater can fast heat 89gal.
Is it true? Does it all make sence? What do you think?
 
Sponsored Links
  #2  
Old 11-19-20, 01:42 PM
P
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 24,041
Received 687 Votes on 634 Posts
Where did your 89 number come from?

What was the wattage of your old water heater and what's the wattage of the new heater you are considering?

Unless the plumber is also including the cost to upgrade the wire and circuit breaker to the water heater I doubt it will be able to heat more water faster. After all, both your old and new water heaters can only draw so much power from the circuit and that's what determines it's heating capacity.
 
  #3  
Old 11-19-20, 02:12 PM
T
Member
Thread Starter
Join Date: Aug 2014
Posts: 160
Received 0 Votes on 0 Posts
I dont know. He simply said it is 50gal heater which can make 89gal of hot waterfast.
I Google it. Check out this link. Maybe this is what he meant.
 
  #4  
Old 11-19-20, 02:36 PM
ferd42's Avatar
Member
Join Date: Jul 2020
Location: United States
Posts: 234
Received 17 Votes on 17 Posts
I didn't see whether the existing was 40 gallon electric or gas, so I'll assume it's electric as did PD, although "fast heat" implies a larger heat input and there was no mention of increasing what would have been an existing 25A or 30A circuit for a 4,500W @ 240V.

I spec'd a 100 gallon, 4,500 W electric water heater for one of my homes in 1993 and NEVER ran out of HW with it controlled by time clock and energized 8 hours/day. The home had a large whirlpool tub and multiple showers with the flow restrictors drilled out. Don't spend extra for a "Commercial" - if there is such a thing - just specify tank size and wattage for a domestic type.
 
  #5  
Old 11-19-20, 03:51 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 59,843
Received 1,202 Votes on 1,112 Posts
I agree..... just specify a regular 50 gallon electric water heater.
 
  #6  
Old 11-19-20, 10:59 PM
T
Member
Thread Starter
Join Date: Aug 2014
Posts: 160
Received 0 Votes on 0 Posts
I am pretty sure that I need gas water heater.
 
  #7  
Old 11-20-20, 05:52 AM
P
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 24,041
Received 687 Votes on 634 Posts
Gas water heaters do generally have a faster recovery time than electrics. You plumber may be wanting to install a larger heater with a higher btu burner. That may/might work but you really need to look at your gas system to make sure it can supply the extra fuel a larger heater will require.
 
  #8  
Old 11-20-20, 08:01 AM
CasualJoe's Avatar
Member
Join Date: Jan 2010
Location: United States
Posts: 10,702
Received 92 Votes on 82 Posts
I am pretty sure that I need gas water heater.
Is a gas water heater what you have now?
 
  #9  
Old 11-20-20, 09:23 AM
A
Member
Join Date: Mar 2010
Location: USA
Posts: 4,177
Received 91 Votes on 84 Posts
You never ran out of hot water using the 100 gallon tank heater because you just did not draw close to 100 gallons each day.

"Fast" heating is irrelevant when the heater is time-of-day controlled by your utility company and the time it can kick on is not during the times you use hot water.

If you set the heater temperature higher, everyone mixes in more cold and less hot for a shower so the tankful lasts longer. But the life of the heater (in years) may be shortened. The Tank Booster (tm) and similar gadgets (sold separately) are connected on top of the water heater and perform a little of this hot-cold mixing ahead of the shower faucet for the purpose of preventing scalding injuries.
 
  #10  
Old 11-20-20, 10:22 AM
T
Member
Thread Starter
Join Date: Aug 2014
Posts: 160
Received 0 Votes on 0 Posts
I checked the label on current water heater and it says 50gal, 38000btu, mfg 2008 and there is some expansion tank on top.
I simply dont understand why I am told to replace it with same size if we complain mainly about hot tub.
If I dont like 50gal for $1300 then he offered 75gal $2000.
And then my friend said that it is easy so I can replace it myself.
I dont know.
 
Reply
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


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: