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  You are here:  AllExperts > Home/Garden > Home Appliances > Heating, Air Conditioning, Fridge, HVAC

Expert Profile: Fred Weldin

Expertise:  I've been handling questions here since Mid-December, will discontinue doing so at 3:00 PM EST August 15; I've fielded around 1,500 questions. I'm going to an independent site at askweldin.com. I have no experience with appliances, so I won't answer questions there on appliances (Clothes dryers, ranges, etc.); I'll simply delete them. I haven't had much to do with service and repair since 1996, so that's another weak area; if you want to ask why your AC stopped working, I'll probably just delete that, too. If you have questions about how big a unit you need, if one room's warmer than the others, if you want an opinion on bids received, etc. do visit askweldin. Finally, I want to thank all of the kind, serious people whom I met here; I enjoyed working with you.
See askweldin.com

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What do you like about this subject?  Helping people who've gotten a raw deal. Really.
What do you still hope to achieve/learn in this field?  I would love to be put out of work because the industry cleans up its act.
Something interesting about this subject that others may not know:  Ductwork problems are frequently misdiagnosed as insufficient cooling: The house is not cooling, so the system must be too small; it's good business for the contractor. In fact, I've never seen an undersized residential system; the most frequent problem is "Too Much Equipment, Too Little Ductwork". I normally reduce cooling capacity when I develop an Improvement Plan.
Something controversial or provocative about this subject  Installing ductwork is a labor intensive operation, and many contractors profit by doing it too quickly. The end result is energy intensive: Conditioned air leaks into unconditioned spaces, too much heat is gained/lost because of improper insulation, rooms are overheated/overcooled because the system can't be balanced, etc. When efficient equipment is used, I say it's "wasting energy efficiently".

This expert has elected not to be rated

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Recent Answers from Fred Weldin
2008-11-13  How to clean natural gas Wall Heater?:  Munir: As you know, I don't do service and repair questions. I do know "soot" is formed when the air/gas mixture is not correct (we say there is "incomplete combustion"), probably meaning the installer...
2008-08-15  Carrier 38CK Air Conditioner:  Pat: Brand new 10 SEER??? It's been sitting around for 2+ years??? "Same cooling performance"...tough to say, if it's the same size it should be close. Do NOT install it if it's larger than the old...
2008-08-14  AC fan to be used to cool house:  Keith: Sounds like you have supply side leakage for sure. That means you probably have return side leakage, too; if your return ducts are in the attic, that means sucking in 120+ degree air. Do check...
2008-08-14  leaking water from the floor where ac drains:  Robert: Sounds like the condensate drain line might be stopped up and/or broken (if I read you right, that pipe goes into the slab). I'm thinking call an AC contractor: He'll be able to blow out the...
2008-08-14  AC fan to be used to cool house:  Keith: 7/(7+9) = 0.44 9/(9+13) = 0.41 So with the fan on, the compressor is running less often (if I understand you); assuming the indoor and outdoor temperatures are identical through both time...
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