Question about Ruud UBHC Air Conditioner

1 Answer

We have a Ruud Model ugta down flow furnace the installer put the evaporator coils for the A/C on the air inlet and now the furnace is always wet shouldn't the evaporator be on the air outlet of the furnace? They say that it is alright the way it is. My engineering experience is that equipment that is designed to operate in a dry location should be kept dry.

Posted by on

  • cliff1hk Oct 08, 2009

    The company that installed the unit just came out to look it over again as soon as thier installation suppervisor saw the instillation he said that it was wrong. the air for this kind of system must pass the furnace first then the evaporator becauce the insulation on the furnace isn't enough to prevent sweating.and the electrical componants were getting wet.


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 291 Answers

Regardless of where the evap coil is, the coil should have the correct drain pan to remove the water from the furnace to the drain. In either case, the furnace should have had a place to mount the evaporator, and if they put it there, it would be appropriate per Ruud's design. Furnace manufacturers don't put evap coils in furnaces because the geographic location of the house will affect the size coil needed. A big house in Kentucky would need a large furnace that might be the right size for a small house in Minnesota, but the Kentucky house would need a much larger cooling evaporator.

Like I said, though, Ruud would make the unit with a place to put the evaporator, and it might be able to go in either location.

The real issue here sounds like it's the way they have the drainage setup.

Posted on Oct 08, 2009

  • San Juan Vet Oct 08, 2009

    It's amazing to me often installers don't look at the installation manual!

    I'm not sure if there's a way to get your money back (on Fixya), but either way if you can get the installer to send a link to the installation manual I'll read through it and compare it to what you describe as their installation methods. I think you can send pictures on here also.

    No rush, either. I check in every few days at least, and it usually gives me an email when someone posts a comment. (Although it didn't today.)


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

What causes insufficient air flow across evaporator coils

Dirty filters is number one, other blocked ducts.
Bad or slipping blower motor
Slipping belts , if you model has it/ them.

Jul 20, 2014 | Ruud RGTC07ERBGS N/A Achiever 75000 BTU...

1 Answer

Getting excessive condensation causing water problems at base of unit. Bought new pump but problem returned. Cleaned lines to outside by using wet/dry vac. How do I get to evaporator coil to spray it and...

Hello, in order to get to the evaporator coil you must cut into the plenum above the Furnace. This will require sheet metal tools and being very careful not to puncture the coil. Many times a cracked condensate pan under the evapoartor coil can cause water to leak down to the base of the unit.

Sep 15, 2011 | Ruud UBHC Air Conditioner

1 Answer

Model Number: UACC-036JAS The unit works fine. The problem is it doesn't shut down after the specified temperature has been reached. The furnace blower shuts down, but the ac unit keeps on running....

Hello, usually a stuck contactor coil will cause this on the outside unit. When the outdoor unit runs continously and the indoor blower does not run no heat is being absoebed by the evaporator coil and thus the line freezes. Replaceing the contactor will fix the problem.

Aug 30, 2011 | Ruud Heating & Cooling

1 Answer

Hello, I have a Ruud 10 seer unit in the condo i frequently stops cooling. The fan inside never shuts off, but the unit outside won't come on often enough to cool to the temp on thermostat. When...

It sounds like the air cond is freezing up, and as he melts the ice off he evaporator coil you will have air flow again. When the evaporator, (which is the coil that absorbs the heat from your condo) is frozen over, no air flow can pass through it. The evaporator is located either above the furnace or below the furnace. Therefore, the indoor fan will continue to run, but no cool air will be coming out of the vents. What causes it to freeze up? Usually it is low on refrigerant (some people call it freon). If there is a leak in the system, he may charge it with refrigerant, and then in a few days or weeks later have to thaw it out, and charge it again. If this is the case, you might want to request the leak be located and fixed. Another reason it will freeze up is a dirty filter. Or, if the unit did not have a filter in it for quite some time, the evaporator could possibly be stopped up with dirt resulting in poor air flow all the time and and eventual freeze up of the evaporator. Hope this helps you, stay cool.

Apr 20, 2011 | Ruud Matching Split Air Conditioner

1 Answer

I have a ruud model no. ubhc-17j11nfd and i am having a problem with my heat. when the heat does come on, the thermostat says it is on auxilary heat. i am getting no suction from inside the house but the...

If you haven`t changed your furnace filter do so. If there still isn`t any air flow then the evaporator coil is plugged with dirt and needs cleaned. It is inside your furnace where the pipes from the outside unit connects. As far as the auxilary heat, this is normal when the house temperature drops to far below the thermostat set point and they will turn off when the house is close to temperature and lets the heat pump take over.

Feb 02, 2011 | Ruud UBHC Air Conditioner

1 Answer

Drip pan wet furnace filter lennox air handler

verymuch so it is clogged up , now open system treat drain pan with bleach ,blow out two lines if there are available but if theres only one treat that on ,then treat the coils clean an treat them after cleaning pour little bleach in the bottom of the pan

May 23, 2010 | Ruud UBHC Air Conditioner

1 Answer

Drain pan for central air

nope, you're sol - have to replace evaporator coil assembly - sorry for the bad news

Oct 05, 2009 | Ruud Central System Air Conditioner

1 Answer

Both circuit board lights blink at the same time when unit turns on. Air pressure out of vents is low. Air is cool but not cooling house down.

your filters might be plugged. if you just changed or cleand the filters and they were plugged the evaporator coil might be dirty not allowing the proper amount of air flow. The evaporator is usualy lokated right above or below the furnace in a coil case that has several screws holding the front panels on. Take a look at the filters and evaporator and make sure their clean. Also wash the out side condenser coil with a garden hose with nozzel. make sure you spray strait into the coil and not at an angle. it will bend the fins. start at the top and work your way down. hope this helps you out.

Jun 15, 2009 | Ruud UBHC Air Conditioner

2 Answers


The condenser coil is in the outdoor unit. Turn off the power. Take a garden hose without the nozzle. You want to use gentle pressure. Just simply using your thumb to control the spray. Spray the water up at an angle under the slanted lovers. use a generous amount of water. you should see the dirt coming our. You will have to take the cover off to clean that side of the coil. Be careful so you do not get the electrical controls wet when the door is off. The Evaporator coil is located in the supply air plenum downstream of the airflow. ( the top if its in a basement). You probably will need to open the ductwork.
Good luck.....

May 02, 2009 | Ruud UAKA042 Air Conditioner

1 Answer

Evaporator coil

Follow the copper line set from the condenser. Yhat will be the yellow brick road to tne evap coil.

Aug 16, 2007 | Ruud UAKA030 Air Conditioner

Not finding what you are looking for?
Ruud UBHC Air Conditioner Logo

Related Topics:

68 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ruud Heating & Cooling Experts

Donni Steen

Level 3 Expert

659 Answers

Bill Long

Level 3 Expert

587 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Are you a Ruud Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides