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Home » Topics » HVAC Contracting » Service & Maintenance

Service & Maintenance
Service & Maintenance RSS Feed RSS

Manual J in Existing Home

ACCA Defends Need for Manual J in Residential Home

A few minutes spent on data entry will ensure satisfied customers, professional results
Wes Davis
January 25, 2023
No Comments
Residential HVAC system design is a foundational step in the process to deliver predictable comfort, and estimating the heat loss and gain of a dwelling is the cornerstone of that process.
Read More
Professor John Tomczyk

The Definitive Guide to Temperature Glide, Part 2

Always consult the P/T chart when calculating superheat and subcooling for refrigerant blends
Headshot tomczyk john
John Tomczyk
January 20, 2023
No Comments
Service technicians need to be careful when reading the pressure/temperature chart because if they choose the wrong values, they will make mistakes diagnosing the system.
Read More
Residential Retrofit

Is a Manual J Load Really Necessary on Residential Retrofits?

Greg Fox
January 19, 2023
2 Comments
Is performing a Manual J load calculation needed in residential retrofit applications? For the industry energy experts sitting behind a desk, yes. For those of us in the real world, it doesn't make sense.
Read More
Basic Furnace Maintenance and Troubleshooting

Basic Furnace Maintenance and Troubleshooting

Layan dahhan 400x400
Layan Dahhan
January 14, 2023
No Comments
The ACHR NEWS visited Flame Furnace in Warren, Michigan to learn how to do maintenance and basic troubleshooting on a furnace.
Read More
Dairy Refrigeration Case

Avoid Careless Mistakes During Preventive Maintenance

Simple tasks can turn into big problems if proper precautions are not taken
Joe marchese
Joe Marchese
January 13, 2023
No Comments
Conducting planned maintenance on refrigeration equipment is beneficial to both equipment owners and contractors. However, simple tasks can turn into problems if not done properly or without taking the necessary precautions.
Read More
Combustion Gas Characteristics

Five Combustion Gas Characteristics You May Recognize

David richardson
David Richardson
January 10, 2023
No Comments
It’s our job to control different combustion gases to prevent them from causing harm. Likewise, we also must focus on recognizing and improving the parts of our personality that may make us toxic to others.
Read More
Homeowner and Contractor

HVAC Equipment Maintenance Can Boost Indoor Air Quality

Regular cleaning, changing filters, and coating coils can all contribute to better indoor air quality
Layan dahhan 400x400
Layan Dahhan
December 25, 2022
No Comments
Without proper cleaning and maintenance, many products that have been designed to improve the quality of air within a building or home will start to falter. That’s where contractors come in.
Read More
The ACHR NEWS Learns About Electrical Wiring

The ACHR NEWS Learns About Electrical Wiring

The NEWS’ senior managing editor visits Flame Furnace in Warren, Michigan
Taylor maria headshot 200x200
Maria Taylor
Layan dahhan 400x400
Layan Dahhan
December 17, 2022
No Comments
The NEWS’ senior managing editor, Maria Taylor, visited Flame Furnace in Warren, Michigan to learn about electrical wiring in furnaces. Taylor then practiced her skills on a furnace simulation board.
Read More
Airside Testing

Four Lessons Bowling Can Teach Us About Airside Testing

David richardson
David Richardson
December 16, 2022
No Comments
Bowling is a game that provides instant feedback. Testing the airside of an HVAC system has some interesting similarities. Let’s look a little deeper at some lessons bowling can teach us about airside testing.
Read More
Boiler

HVAC Decisions: To Repair or Replace a Boiler

Hannah belloli
Hannah Belloli
December 14, 2022
No Comments
Evaluating the age of the system and the urgency of the problem are two key ways to tell whether or not a boiler should be repaired or replaced.
Read More
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