Ask A Question
HVAC Questions? Ask an HVAC Expert for Answers ASAP
What is a dehumidifier?
A dehumidifier is a household appliance that removes humidity from the air. Since humidity can cause mold and mildew to grow, many households use the dehumidifier for health reasons. However, many times people do not know who to turn to when the dehumidifier stops working, or when there are other dehumidifier problems. Read below where some of the most common questions have been answered by the Experts regarding
What capacity dehumidifier is required for a 1000 sq. ft. basement?
The amount of dehumidification required is not solely dependent on the size of the basement. The part of the country where it is to be used and the amount of dampness will affect the size. A tightly sealed basement that restricts entry of damp outside air will require less dehumidification. In general it is best to check manufacturer’s specifications for the dehumidification capacity of different models and choose one size larger. If that is not completely effective, add another unit. If there are items that may be damaged by humidity, you can consider using two units so that if one fails there is a backup.
How do I clean the coils of the dehumidifier?
Start by using a narrow brush to remove the accumulated dirt and debris from the front and rear coil surfaces. Use a vertical motion to prevent any damage or distortion of the coils. Compressed air can also be used to blow away the dirt. Once this is done, spray an
coil cleaner on the coils. If these are not easily available you can use a degreaser or spray detergent. Gently pour water over the fins to wash away the dirt loosened by the spray. Be careful not to allow water to fall on to the electrical component or connections.
My basement is warm and the dehumidifier coils are clean but the dehumidifier stopped working and keeps freezing up. What is the reason and what can I do to fix this?
There are three common causes of dehumidifiers freezing up. The first is blocked coils which restrict the airflow and the second is low ambient temperature Most likely the cause is low refrigerant in the unit. Refrigerant leaks in the sealed system are not uncommon. Repairing this can be expensive – the service call could be in the range of $80, valve replacement could range around $10 and refilling the refrigerant may cost about $80 per pound. Even if you need less, most companies charge by the pound. It may be more economical to buy a new humidifier.
When I turn on my dehumidifier the light goes on but the unit does not start. What should I do? Is there a reset switch that could resolve the problem?
A dehumidifier not working is usually because of either a bad compressor or defective
. Since in this case the light comes on, it appears that the humidistat is working. There is usually an overload and capacitor on the side of the compressor which you can try resetting. But the most likely cause of the problem is that the compressor is damaged. If this is the case, repairing it is not a cost effective option and buying a new one may be better.
The fan on my dehumidifier is not working could the fan motor be burned out?
Before presuming that the fan motor has failed, you need to check if it is getting power. If you have a voltmeter, follow the two wires coming out from the back of the motor to where they end and check, with the compressor on, if 120 volts is being supplied. If there are more than two wires, follow the one that goes to a capacitor (a silver colored cylinder) and check the power supply there. If the power supply is there, that means the motor has gone bad. If there is no power supply, it could mean that a relay is defective and will have to be replaced. If you do not have a voltmeter, there is another option, but this should be done with great care and only if you are comfortable with it. Connect the two fan motor wires to an extension cord and then plug the cord into a wall outlet. If the motor runs, it is fine and the problem lie elsewhere.
My Honeywell model HDH-130 dehumidifier is running, but no water drains into the container. What could be wrong? Does this mean the dehumidifier is not working?
The most likely cause is a dirty condenser which more than likely needs to be cleaned. When a condenser is dirty and clogged it gets warm resulting a rise in the Freon pressure which reduces the evaporator’s ability to remove moisture from the air. Cleaning the condenser can be done by removing the screws around the panel and removing the front and back and then the “U” shaped side panel. You can now wash the dirt from the condenser coils. Check the condition of the removable filter as well, as a clogged filter can affect airflow, before re-assembling the unit. If there is no improvement, the Freon level may be low which is a repair that should be done by professionals. Since the cost of such a repair is high, replacing the unit may be a better option.
These are just some of the questions on humidifiers problems that Experts on JustAnswer have answered. Dehumidifiers are complex devices that operate on 120 volts. If you are not sure of your ability to clean or repair the dehumidifier safely, it is advisable to ask an Expert and get answers before you try to tackle dehumidifier problems in order to prevent injury or damage to the equipment.
Recent Dehumidifier Questions
I have a question . (BILLY) My heatpump has been
I have a question for you. (BILLY) My heatpump has been showing all through the extremely hot days that it is keeping up with my set temperature on the thermostat until today. (I had noticed and I don't know if this has any barings but had noticed our
humidity with the AC keepgin it on 68-69 has been running really high in the house (57-60%) Today the thermostat is four degrees higher than the temperature it is set on and the humidity even went up to 62%. The vents are cold but not ice cold like when they
are new ect. Any suggestions?
I have a 30K BTU Gree mini split with 18k and 12k heads. I
I have a 30K BTU Gree mini split with 18k and 12k heads. I am cooling a two server racks with the 18k head and 1 server rack with the 12k. The cooling requirements make it so the system is oversized, so I have a 30 pint dehumidifier so make sure everything stays dry (Im in FL). My question is, everytime the A/C reaches the programmed temperature of 75 it passes it and goes to 71. Then it cycles off and the room heats up very quickly, so it rises to nearly 83 degrees before the AC kicks back on. I've heard of short cycling but if I use a smaller head, it can't keep up with the serves???? I'm lost here.
I have a Lennox EL 195 DFE gas furnace and a Lennox XP-016-048-230
I have a Lennox EL 195 DFE gas furnace and a Lennox XP-016-048-230 electric heat pump and a Comfortsense 5000 thermostat. I keep the temperature set at 70 - 72 during the day and 68 at night. The humidity is about 70 pct., which my humidistat says is high.
Can either the furnace or the heat pump be adjusted to improve the situation or is a whole-house dehumidification system required?
I am concerned about the new hardwood floors we recently installed in our home.
View More HVAC Questions
Experts are Online Right Now
Ask Your Own HVAC Question
Ask Your Question Now
Ask a HVAC question
Type Your HVAC Question Here...
HVAC Technicians are Online Now
In The News
How JustAnswer Works:
Ask an Expert
Get a Professional Answer
Ask Followup Questions
100% Satisfaction Guarantee
Ask a HVAC Technician
Get a Professional Answer. 100% Satisfaction Guaranteed.
HVAC Technicians are Online Now
Type Your HVAC Question Here...
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.
Become a Professional
Terms of Service
Privacy & Security
© 2003-2015 JustAnswer LLC