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cover of episode How to Clean HVAC Coils Without Causing Corrosion or Voiding OEM Guidelines | John Pastorello Part 2

How to Clean HVAC Coils Without Causing Corrosion or Voiding OEM Guidelines | John Pastorello Part 2

2025/3/20
logo of podcast HVAC Know It All Podcast

HVAC Know It All Podcast

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Gary McCready
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John Pastorello
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Gary McCready: 我想知道空调制造商为什么建议只用水清洗冷凝器线圈,以及这是否意味着他们不信任技术人员会使用正确的清洁剂。 John Pastorello: 是的,他们担心技术人员会使用强酸性清洁剂或增白剂,这些会腐蚀线圈。我们使用的清洁剂比较温和,含有防腐蚀剂,可以防止冲洗用水腐蚀铝制翅片。我们的清洁剂中还含有冲洗助剂,可以防止水垢沉积。增白剂只应在极端情况下使用,例如处理严重污垢的盘管,在住宅环境中通常不需要使用。增白剂会去除铝层,使其变亮,但也会造成腐蚀。 清洁剂的pH值可以高达11,只要含有防腐蚀剂,就不会腐蚀铝。中性清洁剂效力低,无法去除嵌入式污垢。我们所有的清洁剂(除了增白剂)都是铝安全的,可以用于微通道盘管。高pH值(9-10)的清洁剂可以更好地附着和保持防腐蚀剂。 蒸发器和冷凝器清洁剂非常相似,因为它们吸入的是相同的空气。蒸发器清洁剂含有酶,可以去除室内盘管上的生物膜。生物膜是由各种微生物生长形成的,在潮湿的环境中更容易滋生。Viper盘管清洁剂不是增白剂,是铝安全的。蒸发器会通过冷凝水自清洁,而冷凝器需要冲洗。冲洗有助于去除污垢,但清洁剂本身也会分解污垢。不冲洗冷凝器最终会导致起泡和剥落。清洁盘管时,适当的停留时间(至少5分钟)可以提高清洁效果。 John Pastorello: 我们的清洁剂含有防腐蚀剂,可以防止冲洗用水腐蚀铝制翅片。增白剂只应在极端情况下使用,在住宅环境中通常不需要使用。高pH值(9-10)的清洁剂可以更好地附着和保持防腐蚀剂。所有清洁剂(除了增白剂)都是铝安全的,可以用于微通道盘管。蒸发器和冷凝器清洁剂非常相似,因为它们吸入的是相同的空气。蒸发器清洁剂含有酶,可以去除室内盘管上的生物膜。Viper盘管清洁剂不是增白剂,是铝安全的。蒸发器会通过冷凝水自清洁,而冷凝器需要冲洗。清洁盘管时,适当的停留时间(至少5分钟)可以提高清洁效果。

Deep Dive

Chapters
This chapter explores the dangers of using harsh coil cleaners, emphasizing the importance of corrosion inhibitors to protect HVAC systems, especially aluminum components. It also discusses the role of pH levels in cleaner effectiveness and safety.
  • Wrong coil cleaners can damage HVAC systems.
  • Corrosion inhibitors are crucial for protecting aluminum and copper components.
  • Brighteners can remove aluminum, causing harm.
  • High pH cleaners can be effective with corrosion inhibitors.

Shownotes Transcript

In this episode of HVAC Know It All Podcast, host Gary McCreadie) continues his convo with John Pastorello), an expert in HVAC cleaning solutions, and CEO at RTX Scientific, Inc dba Refrigeration Technologies). In Part 02 they break down coil cleaners, explaining why choosing the right product is crucial for different HVAC parts. John warns about the damage caused by harsh cleaners like brighteners and highlights the benefits of using ones with corrosion inhibitors. They also discuss how these cleaners protect aluminum and copper components, along with practical tips for HVAC technicians, such as correct dilution ratios and the importance of rinse aid technology. This discussion gives HVAC professionals key insights into proper cleaning methods to boost system performance and extend equipment lifespan.

John Pastorello explains the challenges HVAC technicians face in keeping coils and ducts clean and why traditional methods often fall short. He stresses the importance of using the right cleaners, especially those with corrosion inhibitors, to protect delicate HVAC components. They discuss how proper cleaning techniques improve system efficiency and lifespan. John highlights the benefits of advanced cleaning products designed for both evaporator and condenser coils and why HVAC professionals should stay updated on the latest cleaning technologies. They also cover how technicians can use these specialized cleaners effectively to maintain peak system performance and reduce energy costs.

This episode is packed with essential HVAC cleaning knowledge, valuable business insights, and advanced maintenance techniques. It helps technicians understand the importance of using the right coil cleaners, enhance system performance, and explore how innovative cleaning products and practices can improve efficiency and reduce energy consumption.

Expect to Learn:

- How poor cleaning and maintenance can shorten an HVAC system’s lifespan.  

- Why standard cleaning agents can harm systems, while specialized coil cleaners with corrosion inhibitors offer better protection.  

- The right cleaning techniques and products to prevent component damage.  

- Common myths about HVAC cleaning and how they affect efficiency.  

- How HVAC technicians can improve service quality and system performance with advanced cleaning solutions.

Episode Highlights:

[00:33] – Introduction to the Second Part of the Episode with John Pastorello

[01:33] – Risks of wrong cleaners vs. benefits of corrosion-protective solutions.

[02:44] – How corrosion inhibitors in coil cleaners protect HVAC systems after cleaning.

[03:25] – Choosing the right coil cleaner and using rinse aids correctly for better results.

[05:55] – Safe cleaning for aluminum components and the role of pH in maintaining coils.

[08:07] – Practical Application and Safety of High pH Coil Cleaners

[09:52] – Comparing Evaporator and Condenser Coil Cleaners

[11:28] – Biofilms and Coil Degreasing: Microbial Growth and Safe Cleaning Practices

[15:25] – Effective Coil Cleaning: Importance of Dwell Time and Final Thoughts

This Episode is Kindly Sponsored by:

Master: https://www.master.ca/)

Cintas: https://www.cintas.com/)

Supply House: https://www.supplyhouse.com/)

Cool Air Products: https://www.coolairproducts.net/)

Lambert Insurance Services: https://www.lambert-ins.com/

**Follow the Guest John Pastorello on: **

LinkedIn: https://www.linkedin.com/in/john-pastorello-9a6b8328/)

Refrigeration Technologies: https://www.linkedin.com/company/refrigeration-technologies/people/

**Website: **https://www.refrigtech.com/

Follow the Host:

**LinkedIn: https://www.linkedin.com/in/gary-mccreadie-38217a77/) **

**Website: https://www.hvacknowitall.com) **

**Facebook: https://www.facebook.com/people/HVAC-Know-It-All-2/61569643061429/) **

**Instagram: https://www.instagram.com/hvacknowitall1/) **