No Hot Water When Central Air Is On - Plumbing - DIY Home Improvement | DIYChatroom

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


Thread Tools Display Modes
Old 07-14-2011, 09:03 AM   #16
Join Date: Jul 2011
Posts: 9
Rewards Points: 10

No Hot Water when Central Air is On

Apparently not.

I've never lit (or relit) the pilot light in the hot water heater (I didn't even know it has a pilot light!), only the furnace.


Alert is offline   Reply With Quote
Old 07-14-2011, 08:30 PM   #17
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 7,095
Rewards Points: 2,290

No Hot Water when Central Air is On

Are you sure the plumbing is done correctly? Maybe you are drawing hot water only from a furnace (or boiler) tankless coil and the stand alone water heater in the crawl space is not sending any water anywhere. THen when the furnace quits, no hot water.
When cleaning anything including baby diapers, it is better to sweep off or scrape off as much solid and semisolid material as you can first. (1) Less cleaning fluid or detergent needs to be used, (2) Less of a mushy mess which in turn means that bleaches or disinfectants will be more effective.

Last edited by AllanJ; 07-15-2011 at 08:18 PM.
AllanJ is online now   Reply With Quote
Old 07-14-2011, 10:20 PM   #18
Join Date: Mar 2011
Location: Ohio
Posts: 1,646
Rewards Points: 1,000

No Hot Water when Central Air is On

pictures of everything would help a lot
DannyT is offline   Reply With Quote
Old 07-14-2011, 10:36 PM   #19
Mad Scientist
Join Date: Dec 2009
Location: Minnesota
Posts: 792
Rewards Points: 552

No Hot Water when Central Air is On

I looked up the "furnace" model number, and it's actually a boiler. So if you have a domestic hot water coil in the boiler providing your hot water, that would explain why you get no hot water when the boiler pilot is out.


McSteve is online now   Reply With Quote

Thread Tools
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
low domestic hot water flow with tankless coil mike42 HVAC 28 11-24-2011 09:35 AM
No hot water past the valve at top of hot water heater-?- Daulton Plumbing 4 04-03-2011 03:47 PM
Very Low Hot Water Pressure. PAS1970 General DIY Discussions 2 02-25-2009 04:01 PM
Testing 12 year old hot water expansion tank? DJfixer Plumbing 2 01-01-2009 09:09 AM
Periodic release from (I think) the T&P valve on the water heater alexz Plumbing 3 08-15-2006 11:31 AM

Top of Page | View New Posts