Tag Archives: refrigerants

I must be doing something right!

Back in April 2011, I started writing on this blog site as a way to help my local contractors and dealers. Most of the posts were based on issues these persons were experiencing and this was a good forum to … Continue reading

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Proper Air Conditioning Sizing

I recently received this question from a homeowner who came upon the blog site: Mike I read some of your articles online and am asking for your opinion. I replaced my antiquated system with a new system. I have a 1250 … Continue reading

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THANK YOU!

A couple of milestones were hit recently  — in April, this blog turned 4 years old. It was started in April 2011. Even more amazing is, as of this writing, there have been 400,312 views of the various articles from … Continue reading

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Indoor Coil Leaks

With A/C season officially here, I have been asked to address an issue that has been around our industry for a long time now and that is indoor coil leaks also known as formicary corrosion. Indoor coil corrosion failures are an … Continue reading

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Maintaining Equipment Efficiency

I participate in a blog called HVAC SERVICE SELLING  and this was posted on the site by Robert Baker who does commercial heating and cooling.  I felt this tied in nicely with my “Spring Cleaning” series of posts and thought I would pass … Continue reading

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SUPER-HEAT as a Diagnostic

Whether you are working on a 1½ ton unit or a 50-ton unit, the principles of the refrigeration cycle is the same.  The most important thing to remember about compressors is that they are VAPOR PUMPS. Compressors do not like … Continue reading

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Proper Charging with Sub-cooling Revisited

Sub-cooling seems to be a great mystery to a lot of service techs in the field yet, any unit with a TXV type metering device, should be charged by sub-cooling instead of super-heat. Since a TXV has a pre-set super-heat … Continue reading

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