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About john t. borgman
Expertise
I work days, so I can only answer early in the day or later in the evening, I live in Oregon. I have been so good at all the other area's of hvac, I am probably the only hvac guy that does not know oil. ( lol ) I am very well versed in gas, electric and heat pumps and will only answer residential applications. I have been known the past decade or so, by my employers as the guy you send when no one can figure it out. Trouble shooting is my special. I understand the physics behind air flow, refrigerants and electricity. I understand programmable t-stats, zone controls, economizers, fossil fuel kits and the engineering thought process in the wiring and construction of residential equipment
Experience
I was lucky enough to start in this field over 25 years ago as an installer, for a company that installed the best duct systems I have ever seen, even to this day. The best ,as far as understanding the way air really flows through a duct system, from the return air to the very last supply register . They also had great pride and the duct work was put in, not only to last 50 years, but to look exceptional. Then as I started doing service work, I was again fortunate that I found a 3 year engineering class being put on be a man that was the educational director for the Entire united states for a society called " the Refrigeration Service Engineering Society " And for the next 3 years I schooled at night and practiced what I learned during the day, a great advantage over schooling and then trying to remember it years later.. Versed in duct design manual J heat gain/loss calculations. Also experience in wine rooms and indoor swimming pool hvac & humidity controls
Publications
I have 2 inventions that have gone through the process and been recorded at the National Institute of Standards and Technology from start to finish and thus been invited to national innovation workshops by the dept. of Commerce and the dept. of Energy. They are waste heat recovery devices that N.I.S.T approved as valid and am currently looking for marketing partners to get this product into the hands of consumers and make a BIG difference in Energy savings for every Household and Eatery and take a big bite in the the peak hours power consumption that face our Utilities companies.
Education/Credentials
factory training in Lennox ,Rheem, Ruud ,Trane, Tempstar ,Carrier, Day&Night, Payne, Bryant, Coleman, Intertherm, Ultra boilers, Unico, Mitsubishi,Sanyo, Taylor, Nicewonger, . Associates degree in Refrigeration Engineering. Certified with Energy Department, Check-me Program, have N.A.T.E. certifications in gas, a/c & heat pump. Teach and apprentice at every company I work at.
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You are here: Experts > Home/Garden > Home Appliances > Heating, Air Conditioning, Fridge, HVAC > air conditioner
Expert: john t. borgman - 11/6/2009
Question
I currently have a 4 ton 14 seer Rheem bought in 1998. Then handler and the condensing unit are correctly paired. The coils inside the handler and the lines inside and outside were freezing. The handler is in the garage the compressor is outside. The condensing unit was blowing cold air from the top of the outside unit. A repairman came out and cleaned the inside of the condensing unit, said freon level was fine and left. The unit started freezing again. Another repairman came out and removed what he said was the thermostat and what I believe to be the sensing bulb from inside the area where the coils are. My question is will it hurt the unit to have the sensing bulb removed from where it originally was by the coils and placed outside the handler? The unit seems to be working fine now. Also, I have looked at getting a new unit and everyone is pushing bryant legacy 16 seer or bryant evolution whats your opinion on those?
Answer
Lisa,
Sounds like you have an air flow problem or the unit is not charged correctly. That TXV bulb is designed to be in the cabinet. What they have done is " make " it work and you are not getting the full effect of your A/C that way. Bryant is Carrier, good product, but then again it depends on the install and the set up, I wouldn't let the people you are using now do it.
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