How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask tomgoe Your Own Question

tomgoe
tomgoe, HVAC Technician
Category: HVAC
Satisfied Customers: 1369
Experience:  32 years servicing HVAC equipment
6636336
Type Your HVAC Question Here...
tomgoe is online now
A new question is answered every 9 seconds

I have a Trane high efficiency furnce model XE-90. Im getting

Customer Question

I have a Trane high efficiency furnce model XE-90. I'm getting condesate from the combustion blow backing-up and leaking out of the furnace. I cleaned out the condensate drain all the way from the furnance to the floor drain. It is clear and drains well. I removed the seal leg trap that collects the condensate from both the blower and the furnace heat exchanger. I cleaned this out as well. I did not reinstall this yet. In the interim, I connected the blower and heat exchanger drain tubes directly into the drain pipe, but there still is water back-up from just the tubing going into the drain tube. Water still is backing up and leaking. Can there be another problem other than the plugged or restricted drain tube?
Submitted: 5 years ago.
Category: HVAC
Expert:  tomgoe replied 5 years ago.

HelloCustomer

If I understand you correctly you have bypassed the trap. This condensate water is in the "negative pressure" side of draft blower. In other words with draft inducer running it is pulling air up this tube and keeping the water from running down it, that is why there is a trap . Water in the trap prevents air being sucked upwards and lets water drip downward. Reinstall the trap and see if you still get a leak

tomgoe, HVAC Technician
Category: HVAC
Satisfied Customers: 1369
Experience: 32 years servicing HVAC equipment
tomgoe and other HVAC Specialists are ready to help you
Customer: replied 5 years ago.

 

I have a seal leg using the tubing coming off of the draft blower before it dumps in the drain. This seal leg is about 1-2 inches. How much of a seal leg do think is required to seal overcome the negative draft pressure? I do not have a seal leg on the condensate draining off the heat exchanger. How much of a seal leg is required for that one? I will resinstall the factory supplied trap, but I would like to know the above answwers in case it fails. I would then build my own seal legs from 3/4 inch plastic pipe.

Expert:  tomgoe replied 5 years ago.
It only has to be large enough to hold water. For instance if you are using 3/4 pipe - use two 90's and two street 90's to make a small trap

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy Bagley, IA
< Last | Next >
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy Bagley, IA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • gotoman for ac

    HVAC Technician

    Satisfied Customers:

    4657
    51 years of experience install design and repair of all makes and models of AC
< Last | Next >
  • http://ww2.justanswer.com/uploads/SE/ServiceTechRus/2012-6-7_2119_056.64x64.JPG gotoman for ac's Avatar

    gotoman for ac

    HVAC Technician

    Satisfied Customers:

    4657
    51 years of experience install design and repair of all makes and models of AC
  • http://ww2.justanswer.com/uploads/AL/alumalite/2012-5-10_234018_shutterstock506249951forJA500.64x64.jpg Phil's Avatar

    Phil

    Mechanical Engineer

    Satisfied Customers:

    3888
    Retired HVAC/ Electrical & Boiler contractor. Industrial
  • http://ww2.justanswer.com/uploads/skibum0101/2008-12-16_015819_just_answer.jpg Rick Mather's Avatar

    Rick Mather

    HVAC Technician

    Satisfied Customers:

    3132
    35 years experience, HVAC
  • http://ww2.justanswer.com/uploads/RY/Rygis20/2011-5-7_3143_DSC5324.64x64.JPG Matthew's Avatar

    Matthew

    HVAC Technician

    Satisfied Customers:

    1994
    14 years experience in the HVAC field of service, installation, Manual J & D calculations
  • http://ww2.justanswer.com/uploads/KE/kentguidry/2011-9-26_214316_0059.64x64.jpg Kenton Guidry's Avatar

    Kenton Guidry

    HVAC Technician

    Satisfied Customers:

    962
    12 years install/service experience.
  • http://ww2.justanswer.com/uploads/solarman1947/2009-12-13_223915_phpkKBcXq_c2PM.jpg Rick Ridley's Avatar

    Rick Ridley

    UK Heating Engineer

    Satisfied Customers:

    871
    Retired But have had 30 years on the tools, Ex CORGI
  • http://ww2.justanswer.com/uploads/Ironheadfan/2009-12-18_222416_pump_005.jpg Tom's Avatar

    Tom

    HVAC Technician

    Satisfied Customers:

    770
    16+yrs HVAC/R service. Residential Commerical Industrial