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Air conditioner problem

Is it common for a low pressure control to go bad on a unit that is less than a year old.This is a ruud energy star 14 seer unit, with the new freon,

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No it is not common. But Ruud is known for having problems with the low pressure controls. They are also known for no following through on there warrantys also

Posted on Feb 16, 2009

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Must check compressor.

Posted on Feb 16, 2009

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Air Conditioner SEER Seasonal Energy Efficiency Ratio


Energy consumption for home air conditioning accounts for almost 5% of all the electricity produced in the USA. Energy Policy Act mandates minimum energy efficiency standards for commercial buildings, using research and standards developed by the American Society of Heating, Refrigerating, and Air Conditioning Engineers. Energy Star qualified central air conditioners have a higher seasonal efficiency rating (SEER) than standard models, which makes them about 14% more efficient than standard models. Energy efficiency specialists with certified training on retrofits and energy savings on both residential and light commercial units may enable you to save up to 50 percent on your air conditioning bills with the use of a high efficiency energy system. Substantial energy savings can be obtained from more efficient systems.

SEER (Seasonal Energy Efficiency Ratio) is related to the Energy Efficiency Ratio (EER), which is the ratio of output cooling in Btu/Hr and the input power in watts W at a given operating point and also to the coefficient of performance (COP) commonly used in thermodynamics. SEER rating more accurately reflects overall system efficiency on a seasonal basis and EER reflects the system’s energy efficiency at peak day operations.

The SEER rating is the Btu of cooling output during a typical cooling-season divided by the total electric energy input in watt-hours during the same period. SEER is related to the Energy Efficiency Ratio (EER), which is the ratio of output cooling in Btu/Hr and the input power in watts W at a given operating point and also to the coefficient of performance (COP) commonly used in thermodynamics. SEER rating more accurately reflects overall system efficiency on a seasonal basis and EER reflects the system’s energy efficiency at peak day operations. The higher the SEER number, the greater the efficiency of your unit. Therefore you will realize greater energy savings. The higher efficiency your product, the lower your long-term energy costs will be. Both central AC and air source heat pumps are rated according to seasonal energy efficiency ratio (SEER).

Before you consider upgrading your cooling equipment, the cheapest way to save money and energy from cooling is to reduce the need for mechanical air conditioning in the first place. Ask your contractor about a variable speed air handler, which will improve comfort and efficiency and allow continuous air filtering at minimum energy cost. Also, because ducts are often responsible for a lot of wasted energy, make sure you hire a contractor who knows about high-efficiency installations. If your central air conditioning unit is more than 12 years old, replacing it with an Energy Star qualified model could cut your cooling costs by 30 percent.


on Dec 14, 2009 | Heating & Cooling

1 Answer

I had Ruud heating and cooling installed five years ago. Last summer my electric bill doubled when I began running my air conditioner. It did not do that the first few years that we were in this house. ...


Hello In a way you are stuck with what is called a S.E.E.R. rating which is a statement of efficiency from the manufacturer.Ex: a 10seer is less electricity to run than a 14 seer.The model # would have told me the seer rating.A 4 ton `1 zone is a large unit but even a 10 seer 4 ton is never cost prohibitive to operate and Never doubles the electric bill in 5 days out of thirty.Is the home unoccupied all month and you use it on weekends?Did the neighbor run a strange wire to your property?There might be stray or lost voltage in rare cases if there is poor grounding issues.Has the unit been serviced? A low freon charge will cause a unit to run excessively long and not cool.Do you run the indoor blower all the time.Has there been any other major purchases made (at all) that you plug in?I would look at everything because there is some cause for DOUBLE bill amount not just the cooling bill.Good luck

Jun 18, 2011 | Ruud Heating & Cooling

2 Answers

Have tempstar model NFCX3600CZ Ser# L0239 58594 and unit will not switch from head mode to cool mode. Contractor says it's a bad reversing valve. cost will be $525 to fix. Question estimate.


I am a Technician myself and work for myself. Their price is fine if they don't try to add as they go. Reversing valves are delicate to install and you have the issue of recovery and disposal of the freon that was inside your unit. I am not siding with the Technicians either there are good ones and bad ones. Did this technician come out and test the unit or was this a quote on the phone? Depending on the age of your heat pump I would consider other factors. We also are nearing the end of the R-22 age and moving to better more efficient units that conserve energy. SEER rating means a lot if you add the cost of energy. The newer styles of heat pumps work under extreme pressure. The higher the seer number the lower the cost for energy. Your model may be a 10 seer I will look after I finish this post. Let me know the age of your heat pump. Remember a heat pump works all year round and not just summer months so life span is reduced. Thanks, Sea Breeze

May 16, 2010 | Ruud Central System Air Conditioner

1 Answer

Hi, I am having a problem with my home a/c. Ive been having to reset the high press. control reset button on the side of my outside condensor unit lately. Ive noticed that the fan is having difficulty...


If you spin the motor and it starts running, the capcitor is bad. Replace it and all should be well. High pressure is tripping as the fan motor is not starting when the unit comes on.

Aug 16, 2009 | Ruud Central System Air Conditioner

1 Answer

If installing a GSC140481 condensor with a ARUF486016 air handler is it necessary to change the txv to increase energy efficiency? Can these 2 units acheive a 14 SEER rating?


The real question is, am I going to get 14 seer using the old coil with the new condencer.If it is using r-22 then the old txv should work,but the old coil is proboby rated at 10 seer . since these were never tested together you would probobly see a minimal gain in efficency.Now if it is a matched set(ahri rated) you with definently get you 14 seer.Hope that helps!

Jul 09, 2009 | Goodman Heating & Cooling

1 Answer

I have a 23 year old Goodman 4 ton HVAC system that has done well but is needing more repairs more frequently. I am looking to replace the unit but anything I install will be placed on credit which is not...


A 23 year old unit will be a major energy hog.You will see a massive improvement even with a less efficient unit,but go with the energy efficiency.The price of fuel is going to keep going up,and you will be using the furnace for many years.I'm in Ohio,and we get by just fine on electric for the very rare occasion the temperature drops below the level where the heat pump cant keep up.If this really worries you,you can put a couple space heaters back for emergency.Of course your talking about a gas unit,or a dual fuel unit.The dual fuel would be your best bet of course for ultimate fuel efficiency,but they can be pricey for the ones with all the bells,and whistles.Some will even use the fuel that is less expensive at any given time throughout the day.For example in some circumstances electricity is more expensive during the day then at night.Ultimately you have to figure out how much energy you use on average to heat your house.If you know the efficiency of the unit you have now you can estimate the actual output energy that is actually needed to heat/cool your house.Which would be the effective output of the old unit.Figure out how much less energy input you will need with a more efficient unit to get the same average output as the old unit.Subtract the energy usage for the new unit from the average energy use from the last winter.This will be your approximate energy savings.This should give you some Idea of the energy savings.

Jun 24, 2009 | Ruud UBHC Air Conditioner

1 Answer

RUUD 14 seer heat pump makes loud squeeking noise after cycling.


Your problem is the TXV. I just had person with the same problem. Replace TXV no problem Rusty

May 01, 2009 | Ruud UAMB Air Conditioner

1 Answer

Ruud 12 seer heat pump not heating


It sounds like the unit is tripping off from high pressure. Check you filter and indoor coil. You may have low air flow inside that is causing the refrigerant pressure to be to high.

Mar 22, 2009 | Ruud Central System Air Conditioner

1 Answer

Air conditioners


No kits, you will have to upgrade.

Mar 17, 2008 | Heating & Cooling

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