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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 49 of 54
In Progress

Inspecting Lennox Duracurve Heat Exchanger

Now, we will be examining a Lennox DuraCurve-style heat exchanger, which is a clamshell type featuring a distinctive S-shaped pattern within its design. While its design is unique, the operational aspects and common issues such as cracks at temperature stress points and other areas where the metal bends or becomes thin are similar to many heat exchangers. The curved shape inherently slows down the heat around the exchanger’s bends, affecting its thermal dynamics.

To thoroughly inspect this type of exchanger, our first step involves gaining clear visual access to the interior of the heat exchanger, necessitating the removal of the burner assembly. With this access, we can proceed to inspect the chambers individually. During this inspection, we specifically look for cracks at what are known as TSPs, or temperature stress points, which are identifiable by visible burn marks. Additionally, we’ll examine the seams of the clamshell for any gaps or signs of rust accumulation.

Should any defects or cracks be discovered during this phase, it signals the end of the inspection process as these indicate significant issues. To extend our inspection, access beneath the heat exchanger is essential, which involves removing the blower motor assembly to perform a vertical inspection. Similar to other clamshell designs, it is crucial to inspect the rear of the exchanger, where the metal tends to narrow, for additional indicators of wear like larger TSPs or rust along the back seams.

If these signs of wear are found, the next step involves removing the exchanger from the furnace box to conduct a comprehensive visual inspection. We also recommend an oil spray test for these types of exchangers, which we will detail in another video. Upon completing these inspections, your evaluation of the heat exchanger is concluded, ensuring a thorough assessment of its condition.


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