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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 47 of 54
In Progress

Inspecting Serpentine Heat Exchanger

Serpentine-style heat exchangers are a prevalent type of exchanger found in furnaces manufactured from the mid-1980s to the present day. These exchangers are distinguished by their distinctive shape, reminiscent of the winding path of a serpent. In construction, they are similar to clamshell-style heat exchangers, where two pieces of metal are joined along the outer edges. However, serpentine heat exchangers differ in that the inner portions of the metal are connected by what are known as eyelets. These eyelets are small, circular, flared fittings that press the two metal pieces together, ensuring a secure bond.

The term “serpentine” describes the pathway of the combustion gases through the exchanger, beginning at the widest point at the base and moving upwards towards the inducer draft motor. Our inspection process for serpentine-style heat exchangers mirrors that of other types. We begin by removing the burner assembly to use a mirror and flashlight for identifying signs of thermal stress, discoloration, and any other indicators of wear within the internal burner cavities. Next, we conduct a comprehensive visual inspection within the furnace cabinet using both a flashlight and mirrors, complemented by a tactile examination.

During this inspection, we pay particular attention to the eyelets along the sides of the heat exchanger. Over time, these eyelets can wear out due to the repeated expansion and contraction of the metal, potentially losing their integrity or even breaking off and falling into the blower cavity or the return air duct. It is crucial to physically inspect these eyelets while the heat exchanger remains installed. Following this, we employ mirrors, flashlights, and an inspection camera for a more detailed examination.

Like with clamshell-style exchangers, we also inspect the back of the serpentine exchangers for areas where the metal may have become thin or curved. An additional critical area to check in these types of exchangers is near the top, where the metal may display dimples. These dimples are designed to create velocity within the chamber and direct air flow in a specific pattern. However, they are susceptible to cracking over time due to heat exposure. Ensuring these areas are inspected thoroughly is imperative.


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