Articles by Jim Wheeler

The case for UV and ozone system cleaning

See the light.
By Jim Wheeler
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Did you know a UV light tends to keep the condensate drain clean?


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Understanding the emergence of micro-channel and micro-groove coils

Design differences.
By Jim Wheeler
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The premise behind “micro-groove” coil construction is to continue with the standard copper-tube and aluminum fin design we all are so familiar with, but do so with smaller internally enhanced tubes that have thinner walls. This reduces the amount of copper, as well as the cost, size and weight of the coils.


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Use these commonsense air-conditioning techniques

System longevity.
By Jim Wheeler
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Shortly after the magazine came out, I received an email from a reader pointing out the obvious — that obtaining superheat and subcooling readings usually requires the use of both gauges and a thermometer. Yes, this is true. But perhaps I should have gone on to add the following.


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2014 AHR Expo: Part 2

Where is the refrigerant industry headed?
By Jim Wheeler
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At each AHR Expo I look forward to meeting with the people from Airgas — an important supplier of refrigerant reclaim services to our industry — because I can rely on what the company tells me.


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Foreign flare at the 2014 AHR Expo

Plenty of overseas manufacturers displayed their HVACR wares at the 2014 AHR Expo.
By Jim Wheeler
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This year was billed as the largest AHR Expo in the Northeast to date. The impressive turnout to the Javits Center occurred despite the record cold and snow that brought New York City to a virtual stop on the second day of the show.


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Don’t forget to check for indoor airflow

A maintenance must.
By Jim Wheeler
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The purpose of an A/C “preventive maintenance” or “tune-up” call is to clean up a system after a year of wear and tear, and to make sure it is working at peak efficiency.


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Put a charge in it

Noninvasive preventive maintenance is the way to go.
By Jim Wheeler
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If you needed a tool that would best describe an HVAC technician or his company, it would be his manifold and gauges. Other than hand tools, that’s the one most technicians carry. So, it would be unusual to think of a tech going on a “preventive maintenance” or “tune-up” call without connecting this device.


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Stop cleaning coils with corrosive solutions

Keep it running.
By Jim Wheeler
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Service agreements and tune-ups or “preventive maintenance,” as is required by most A/C equipment manufacturers to fulfill warranty obligations, too often is poorly done by servicing dealers. Frequently, more harm is done than good.


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Should you take a chance on risky credit?

Rolling the dice.
By Jim Wheeler
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The common industry thinking is that offering risky credit is a bad idea. However, that rule may not always be the best one to follow when you consider actual potential losses vs. potential benefits.


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Can you mix R22 with R410a?

You can, but it doesn’t work.
By Jim Wheeler
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 I recently read an article in a local HVACR magazine that somewhat addressed this problem, which I guess we all should have foreseen coming because R22 is getting very scarce and its price is skyrocketing. 


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BNP Media's Plumbing Group Visits Grundfos North American Headquarters

BNP Media’s Plumbing Group, comprised of the Plumbing & Mechanical, Supply House Times, PM Engineer (pme) and Reeves Journal brands, recently visited Grundfos’ new North American headquarters building in the western Chicago suburb of Downers Grove, Ill.

8/26/14 1:00 pm EST

Free Webinar: Low Temperature Heat Emitter Options in Hydronic Systems

With proper design, you can create systems that require supply water temperatures no higher than 120° F under design load conditions.

Supply House Times

July 2014

2014 July

In the July issue of Supply House Times, find out who has been appointed as Southern Wholesalers Association's new president. Milwaukee Valve showcases its operations to the Newport News Shipbuilding, Robertson Heating Supply hits a milestone as they celebrate their 80th year in business. Read about the 12th annual training day led by Security Supply, find out who has acquired several Kohler store locations. Also check out the latest products and news for the distribution industry.
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