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Category: Maintenance

link to What Does an EZ Trap Do?

What Does an EZ Trap Do?

If you have a central air conditioner or you're installing a new one, you may have come across a device called EZ Trap. It is a type of air conditioner condensate trap. But, what does it actually...

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link to How to Cover Air Conditioner Pipes?

How to Cover Air Conditioner Pipes?

Air conditioner pipes often run on the house exterior wall. But, many people find it ugly and they want to cover it up nicely. So, how do you cover air conditioner pipes properly? To cover air...

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link to How to Measure Airflow in HVAC? (Register & Duct)

How to Measure Airflow in HVAC? (Register & Duct)

Low airflow is a common problem in HVAC that lead to insufficient heating/cooling. Many people want to fix their HVAC by themselves to save money. But, they are not sure how to measure the airflow...

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link to Chiller Surge: Symptoms, Causes & Preventions

Chiller Surge: Symptoms, Causes & Preventions

Chiller surge is a problematic behaviour in buildings that are equipped with a chilled water system. Operators and engineers are having a hard time figuring out why chiller surge is happening. So, I...

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link to Why HVAC Air Vents are Noisy and How to Fix Them?

Why HVAC Air Vents are Noisy and How to Fix Them?

A properly designed HVAC system should not produce unpleasant noise. Usually, problems such as rattling and whistling noise are not a big deal. People are seriously frustrated with a really loud air...

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link to Hydronic Balancing Basics (Chilled Water System)

Hydronic Balancing Basics (Chilled Water System)

Hydronic balancing is important to the efficiency and effectiveness of chilled water system. However, many engineers find it very difficult to understand. So, I did some intensive studies. Liquid...

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About Me

My name is Yu Chang Zhen. I'm an HVAC professional with more than 7 years of practical experience, covering from design and installation to service and maintenance. I'm also a project manager and hot water heat pump specialist. Thus, my sharing of knowledge on this website not just about HVAC but also include project engineering, construction and hot water system.

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