Question about Ruud UBHC Air Conditioner

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Always running I just bought this house with an existing Ruud system installed and have noticed that the air is ALWAYS running. It never pushes the heat past the set temp to make it turn itself off it just runs at the set temp forever. Needless to say this is a killer on the electric bill and I am seeing if I can fix it hear before having to call in someone to service it.

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Some newer high efficiency units using variable speed DC motors are designed to maintain a temp and wonrt shut off by design. Does it maintain a temp you desire ? It may be normal hard teling without seeing it.

Posted on Feb 25, 2012

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Posted on Jan 02, 2017

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If the system is actually doing everything it can, which I do occasionally run into, then it's time to start looking at other factors like the heat loads. Number one problem I run into is either attic insulation or attic ventilation. One thing that really sticks out in your post though is the square footage and tonnage. Now, to be honest, what the square footage is from the home owner to actual living space always varies. Home owners always get the square footage like a realtor, but includes the garage and other unconditioned rooms. What your looking for is the square footage of only the rooms that have a vent. It is 400cfm per ton, 1 cfm per square foot. So if you have a 2.5 ton system, it is capable of doing 1000 square feet of living space. You said 1500 square feet, which would need a 3.5 to 4 ton system. Hope this helps and gets you to cooler days!

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Hello
Tons of cooling is in btus.12000 btus is one ton,24000 is 2 tons.

Somewhere on your unit is the cooling capacity in btus,take that number and divide it by 12000.

Usually a 2000 sf house will need 3 to 4 tons of cooling,more is always good.

Im sending a link to do an easy calculation that should be helpful.

http://www.consumerreports.org/cro/appliances/heating-cooling-and-air/air-conditioners/sizing-worksheet/

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I have Ruud Silhouette ii, about 5-6 yrs old...heater will work for a while, then it shuts down, house gets cold, I'd bang on the heater box, it comes back on..why does it do that? It does that every...


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Do you think you may have water in the inducer fan? Really. There may be a drain hose connected to the fan housing that allows the condensate to be drained away. Remove the hose and check for debris blocking the hose. While you are looking at it, make sure your venting slopes to either the outside or back to the furnace, you may have a build-up of water in the horizontal length of the vent pipe. Hope I helped!

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My goodman gaspack has had two incidents of cracked heat exchangerS within 18 months apart. Could something be cAUSING THIS TO HAPPEN?


Things to watch for when your heat exchanger is cracking....
1.Always kee the filter clean
2.Make sure the return air vents are clean and clear of obstructions
3.Your furnace could be Oversized for your house thereby running too hot.
4.The furnace can be "Overfired" basically burniing more gas and running hotter than it's supposed to be
5.It's always best to have your furnace taking fresh air for combustion from outside...basically you should have 2 pipes on your furnace ..one for Air Intake and the other for Exhaust
6.Sometimes some furnaces have a Bad Design and are prone to failure...Some Goodman have "Rings" basically large rivets that pop...this was a bad design however all the suggestions above should help but may not eliminate your problem

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Hope this helps Ya

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Is the buzzing in the outdoor half of the system? If so
your possibilities are.
buzzing could be the contactor. In the control compartment on the side of the unit there is a small brown component that has wires to one side and the other . There are contacts in the center like points on a car. If the points are pulled in look for ants in between the contacts. Always secure power to the outdoor unit before touching anything inside. If the points are pulled in check your breaker to the outdoor unit. Turn the breaker off then back on. Breakers sometimes trip but look ok.
Buzzing could be thee coil to the contactor itself, sometimes with age the coil will breakdown and cause noise.
if you give me more information I can focas in closer to a solution

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