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Author: Sergio Nieto

Technical Services Manager North Georgia
Technical Services

Defrosting Thermostats: Learning & Understanding Heat Pumps

Sergio NietoJune 12, 2025June 17, 2025

We have multiple articles about the defrost boards for residential and commercial units on our website and each has addressed…

Technical Services

Condensation From a High Efficiency Furnace

Sergio NietoMay 14, 2025May 14, 2025

High efficiency furnaces, also known as 90% furnaces or condensing furnaces, use two heat exchangers to remove more heat from…

Technical Services

Evaporator Coil Corrosion: Why Do Some Corrode Faster Than Others?

Sergio NietoApril 16, 2025April 17, 2025

Indoor coil corrosion followed by leak failure has been an issue in the HVAC industry for a long time. Although…

Technical Services

Vacuum Pump Performance

Sergio NietoMarch 11, 2025March 11, 2025

Most technicians are aware of the importance of changing the oil in your vacuum pump regularly. However, if you aren’t,…

Technical Services

Tech Mate Pro: Fast, Accurate ECM Testing

Sergio NietoFebruary 19, 2025February 19, 2025

Working on any system that has an Electronically Commutated Motor (ECM) is always a challenge. This type of motor receives…

Technical Services

Understanding Furnace Fault Codes 13 and 31

Sergio NietoJanuary 17, 2025January 17, 2025

With the implementation of near-field communication boards (NFC) installed in certain products offered by Mingledorff’s, the use of apps is…

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