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Category: Maintenance

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 What is Net Positive Suction Head? (Centrifugal Pump)

What is Net Positive Suction Head? (Centrifugal Pump)

A sufficient net positive suction head is one of the requirements of centrifugal pumps. Without it, centrifugal pumps will not move water and cavitation may occur thereby damaging the pumps. So, I...

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link to Why Condo Air Conditioners Not Cooling? (How to Solve)

Why Condo Air Conditioners Not Cooling? (How to Solve)

Condo air conditioners not cooling is a problem that frustrates many people. Condo air conditioners work quite differently from conventional single-family landed house air conditioners. So, why condo...

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link to HVAC Air Balancing: Basics, Tools & Procedures

HVAC Air Balancing: Basics, Tools & Procedures

Air balancing is not uncommon for HVAC project engineers. Besides, homeowners may also need to do air balancing once in a few years to maintain thermal comfort. So, what is HVAC air balancing and how...

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link to Why Your HVAC Ducts Are Sweating? (Root Cause)

Why Your HVAC Ducts Are Sweating? (Root Cause)

HVAC ducts are not meant to be sweating. Water droplets formed on the external surface of your HVAC ducts indicate a sign of problems. So, why your HVAC ducts are sweating? HVAC ducts sweat...

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link to How to Service Air Conditioner Yourself? (How I Did It)

How to Service Air Conditioner Yourself? (How I Did It)

Service air conditioners yourself can save money, especially during hard times. I did it recently and I want to share with you how to service the air conditioner yourself. After paying...

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About Me

Hi, my name is Yu Chang Zhen. I've been working as a professional in the HVAC industry for more than 7 years, covering from design and installation to commissioning and maintenance. With my experience, I want to help people solve their HVAC problems. Welcome, I hope you can find your solutions here.

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