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Become A Top Selling Salesman

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  1. Mentality Of A Top Salesman

  2. Waking Up In The Morning
  3. Driving To Work
  4. Being On Time
  5. Reading The Job History
  6. Pre-Screen Call Using Zillow
  7. Walking Up To The Home
  8. Mentality Quiz
    1 Quiz
  9. Sales & Estimate Process
    Why To Buy Today
  10. Setting The Stage
  11. Building Urgency Early
  12. Attic Inspection
  13. Measurements
  14. How To Use Presentation Book
  15. Going Over Options
  16. Step Financing Explained
  17. How To Reset The One Legger
  18. Selling Your Company
  19. How To Peak A Customers Interest
  20. Install Incentive Close
  21. Asking For Their Business
  22. Post Close
  23. Explaining A Single Stage Furnace
  24. Explaining A Single Stage AC System
  25. Explaining A Variable 2 Stage AC System
  26. Explaining A Variable Stage Furnace
  27. Sales & Estimate Quiz
    1 Quiz
  28. IAQ & Ducting
    Drawing Their Duct System
  29. Insulation Level Check
  30. Attic Inspection
  31. Duct Inspection
  32. Dampers Explained
  33. Greyflex Ducting
  34. Asbestos Ducting
  35. Mylar Ducting
  36. Explaining A UV Light
  37. IAQ & Duct Quiz
    1 Quiz
  38. How To Build Urgency
    4 Reasons To Replace Your Ducts
  39. Turning Over A System To A Salesman
  40. Turning Over A System To Yourself
  41. Shoulder Season
  42. Next Day Installation
  43. Creating Urgency With A Poor Condition Heat Exchanger
  44. Building Urgency Quiz
    1 Quiz
  45. MISC
    Inspecting Tubular Heat Exchanger
  46. Explaining Tubular Heat Exchanger
  47. Inspecting Serpentine Heat Exchanger
  48. Explaining Serpentine Heat Exchanger
  49. Inspecting Lennox Duracurve Heat Exchanger
  50. Explaining Clamshell Heat Exchanger
  51. Heating Sequence Of Operation
  52. Drawing A System
  53. Rat Check
  54. Ladder Drop Attic Access
Video 45 of 54
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Inspecting Tubular Heat Exchanger

Tubular-type heat exchangers are a widely used design in heating systems. The process of inspecting these units begins with gaining access to the burner tubes. During the inspection, we specifically look for gray and black marks inside these tubes, which are indicative of heat stress points. Over time, these areas are prone to expansion and contraction, ultimately leading to splits or cracks in the tube. Inspecting tubular types can be challenging solely from the blower cavity due to the bends in the tubes and their compact arrangement within the furnace cabinet. For a comprehensive inspection, we advise removing them from the unit.

We have prepared another video to guide you through the removal of these heat exchangers, but let’s focus on the inspection process for now. The heat enters through the four bottom tubes and moves up to the accumulation chamber. This chamber, also known as an accumulator, plays a crucial role in decelerating the hot gases. It typically becomes the hottest point in the system and a common site for stress points. The goal is to retain the hot gases within the heat exchanger as long as possible, maximizing the transfer of heat to the air flowing into the home. Splits and cracks near the edges of the accumulation chambers are common findings.

Upon discovering any cracks or holes in the heat exchanger, there is no need to continue the inspection, as this is a clear indication of failure. The inspection then proceeds to the flared connections of all tubes leading to the chambers. These flare fittings can weaken over time due to constant contraction and expansion, potentially resulting in a compromised seal and a loose tube connection to the accumulation chamber. By applying gentle pressure to the flare fittings, we ensure that all tubes are securely sealed to the accumulation chamber.

The next step involves inspecting every other tube connection point leading in and out of the heat exchanger. Any loose connections at this stage indicate a failure in the heat exchanger. Another critical area to check is for moisture accumulation on the heat exchanger. Moisture burning off can leave behind mineral deposits, which, over time, can corrode the metal, leading to holes and cracks.

These highlighted areas are where technicians commonly identify issues. However, a comprehensive visual inspection is recommended to uncover any potentially overlooked areas during the initial check. Additionally, smoke tests and inert gas pressure tests can be utilized to identify other failures not apparent in a visual inspection.

This overview encapsulates the inspection process for tubular-type heat exchangers, aiming for thoroughness and precision in identifying any potential failures.


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