Ticking sounds with gas furnace


  #1  
Old 03-15-06, 11:04 PM
N
Member
Thread Starter
Join Date: Mar 2006
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Ticking sounds with gas furnace

Hi. I saw this post from 11-28-2000 at your site and wondered if the proposed solution worked. It sounds like my problem:

This is a good one. I can hear a "ticking" sound coming from somewhere in the ductwork of my central heating system (heat pump). The ticking sound seems to be located on one specific area of the house. I almost sound like water dripping on the metal, but I don't see any signs of dripping water or rust. The sound can be heard when the heat is not running. The ticking is fairly constant in most cases, sometimes it sounds very fast an others a longer interval between ticks. I can go down into my basement with some of the ductwork is exposed. If I push up on the area where the sound is, it goes away for a short time but eventually comes back. I don't know what this is and it is driving me nuts. Any suggestions on what to look for would be appreciated!

My problem started about 1 1/2 weeks ago. Every time the heating shuts off, the ticking starts and eventually fades. It sounds just like a dripping faucet. What is wrong?
 
  #2  
Old 03-16-06, 05:04 AM
Jay11J's Avatar
Member
Join Date: Sep 2001
Location: Rochester, Minnesota
Posts: 18,427
Likes: 0
Received 0 Likes on 0 Posts
What do you have?

Heat Pump with gas heat back up?

Gas heat w/ A/C only?

It just stated to do the ticking? How's the air filter?
 
  #3  
Old 03-16-06, 06:37 PM
bolide's Avatar
Member
Join Date: Jan 2006
Location: PA
Posts: 1,909
Likes: 0
Received 1 Like on 1 Post
> I saw this post from 11-28-2000 at your site

Do you have a link?

> The ticking sound seems to be located on one specific area of the house.
> I almost sound like water dripping on the metal, but I don't see any signs
> of dripping water or rust. The sound can be heard when the heat is not running.
> The ticking is fairly constant in most cases, sometimes
> it sounds very fast an others a longer interval between ticks.

Sounds exactly like metal contraction as it cools.
 
  #4  
Old 03-16-06, 08:41 PM
N
Member
Thread Starter
Join Date: Mar 2006
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
The furnace says WhisperHeat by Lennox, but I have documentation for Bryant model 394, an upflow furnace. I haven't been in my house very long, so I didn't buy the furnace. I hope that is enough information. It is a gas-fired furnace and I do have A/C that was installed this past summer. Also, temperature controller is a Honeywell.

The air filter should be fine. I just replaced it about a month ago.

The "ticking" sounds start a few minutes before the heating cycle (i.e. when I hear the fan blow). Then it starts again after the fan stops blowing. Additionally, I hear what I call "cracking" or "knocking" metallic sounds, during and a little bit after the heating cycle. I do believe those noises are due to the the thermal contraction/expansion effects.

More info, the "ticking" sounds stop if the heating cycle does not kick in for a lengthy amount of time, such as a couple of hours.

The "ticking" sounds are very regular, like a clock.

If this is due to thermal contraction as it cools, what can I do?
 
  #5  
Old 03-16-06, 08:44 PM
N
Member
Thread Starter
Join Date: Mar 2006
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Ticking sounds with gas furnace

The furnace says WhisperHeat by Lennox, but I have documentation for Bryant model 394, an upflow furnace. I haven't been in my house very long, so I didn't buy the furnace. I hope that is enough information. It is a gas-fired furnace and I do have A/C that was installed this past summer. Also, temperature controller is a Honeywell.

The air filter should be fine. I just replaced it about a month ago.

The "ticking" sounds start a few minutes before the heating cycle (i.e. when I hear the fan blow). Then it starts again after the fan stops blowing. Additionally, I hear what I call "cracking" or "knocking" metallic sounds, during and a little bit after the heating cycle. I do believe those noises are due to the the thermal contraction/expansion effects.

More info, the "ticking" sounds stop if the heating cycle does not kick in for a lengthy amount of time, such as a couple of hours.

The "ticking" sounds are very regular, like a clock.

If this is due to thermal contraction as it cools, what can I do?
 
 

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