Aboutjohn 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.
Question I have a Ruud model #UGDA-12EA-ER furnace with outside air conditioner unit. I turned the AC on this morning and heard an ungodful noise from the blower unit area on the furnace. It sounds like shotgun pellets rolling around in a drum. The outside AC unit is working fine and sounds strong. There is reduced air flow coming from the house vents. The units are about 11 yrs old. Any ideas would be appreciated.
Answer Jerry,
Pull the front door from the furnace. To the right of the vent pipe there is a brown door ( one on both sides ) that has a small tab at the bottom middle that when you lift it up ( it is in a groove between a piece of sheetmetal and the brown frame of the furnace ) and pull to you comes off. At the bottom left of the opening is a small black switch that kills the power, so nothing will run if you don't push it in. You will see the blower assembly that houses the blower motor and the wheel. Reach around the right side and into the assembly and you will feel the blower wheel. Turn it by hand and see if it is dragging. If it is, there are one or two set screws in the middle of that wheel where you are reaching in to. With a flashlight and maybe a mirror if you cannot see it, line up the set screw with the flat part of the blower motor shaft and the wheel slides back and forth, so center it, tighten very well.
Now if that is not it. Then maybe something has fallen in there and you might have the fan switch on at the tstat and hold that little black switch in and look and listen with the door open and see what you can see.
