Servicing of a Polarwind dehumidifier - noticed not as efficient - 8 years old

Clean the coils and make sure it is in a place with good air circulation.

Hi,
There are many reasons why a dehumidifier willnot work or collect water.
Here is a tip that I wrote to help people to figure out what is going wrongwith their dehumidifier

Dehumidifier is running but no water is in bucket

heatman101

It's 7 years old and has severed you well. Repairs on a unit that old, cold cost as much as a new unit. That's, if the parts are still available for a 7 year old dehumidifier.

As far as advice is concerned ... I agree with you. Since you're using it primarily in a basement. Shop for a low temperature unit. That's one that will function well, between 40 & 60 degrees F. I say this, because the ambient air temperature at floor level in a basement, can be 5 to 8 degrees cooler than the air temperature at chest level. Regular dehumidifiers don't function well at the temperatures I referenced above.

The other features you want to look at is energy efficiency and the square footage or cubic footage it's rated to handle. I would suggest, no matter what you buy, if an extended warranty is available ...buy it. It could be money well spent. Then, only the Routine Maintenance is up to you. Which means, don't misplace your owner's Manual.

Hope this helped you. Please let me know.

need to check freon sounds like it low on charge.

Hi,
Here is a tip that I wrote about that problem...

http://www.fixya.com/support/r4662409-dehumidifier_running_but_no_water_in

heatman101

it can be fixed but not economically, I would hold onto the unit the new ones are not good at all,

the evaporater coils rot out and the freon leaks out. thats about all the longer these newer ones last now.

A dehumidifier works like a low powered air conditioner where a fan draws air through a refrigeration unit which cools it and condenses water vapour and collects it in a container.

There is likely to be at least one air filter so some cleaning of the air takes place and such filter(s) will need attention periodically and in addition most manufacturers claim their products need servicing every 3 years.

Best results will be obtained when the room is closed and ventilation minimal and the capacity of the machine is more than adequate for the space where it is sited. A room with an open window or where the door is opened frequently is not really a suitable site for a dehumidifier.
It is important to choose a machine that is somewhat too large as efficiency will fall between service intervals.

It is quite possible a manual for a different but similar model by the same manufacturer will provide some useful information...

Hi Bonsia,

Does this unit freeze in warm weather?
How old is it?

You said, I have a Maytag M7DH665B2A Dehumidifier that freezes solid and has a corroded sensor that's fallen off the coils.

My recommendation is replace it!

Here is an interesting article I just read!


.Repair or replace?

When to pull the plug on your old refrigerator

It nearly always makes sense to undertake simple do-it-yourself repairs,
such as replacing a gasket on a refrigerator or a freezer.

Typically, you'll also find a troubleshooting section for more-serious problems
in the owner's manual.

Should you pay for a repair or buy a new model?
The answer depends mostly on the age of your refrigerator,
how much you bought it for,and the cost of the repair.

Follow these guidelines:

When a repair makes sense.

If your refrigerator is under warranty or less than four years old (three years for top-freezers),
paying for a repair makes sense.
Note that refrigerators under warranty might require service from a factory-authorized technician;
readers have found them on a par with independent repairers.

When a repair might be a wise choice.

If your refrigerator is out of warranty and is four to seven years old,
it might make sense to pay for a repair. Customers generally pay $100 to $200 for a repair.
But you might want to buy a new model even at this stage,
given that today's models are quieter and have added features.
Higher energy efficiency is another plus: Energy Star-qualified models made after April 28, 2008,
are 43 percent more efficient than conventional models built before 2001 and 56 percent
more efficient than those built before 1993.

When it pays to replace.

The repair costs more than half the price of a comparable new refrigerator.
Data also shows that it doesn't pay to fix a less-expensive top-freezer refrigerator
six or more years old or a bottom-freezer or side-by-side eight or more years old.

Thanks to better recycling programs, less than 10 percent
of a refrigerator you replace is likely to end up in a landfill.


Thanks for giving me the opportunity to help!
Please do not for get to give a rating before you sign off!
Thank You, HUUUM

The Efficiency Factor (EF) is a guide to a dehumidifier's operating cost. The EF is the amount of water, in litres, a dehumidifier removes at 27°C (80.6°F) and 60 per cent relative humidity for each kilowatt hour (kWh) of electricity. If electricity costs 8 cents a kilowatt hour, which it does in many parts of Canada, a unit with an EF of 1.2 will remove 15 L (32 U.S. pints or 3.3 imperial gal.) foreach dollar in electricity costs. An advanced unit with an EF of 2.4 will remove 30 L (63 U.S. pints, 6 1/2 imperial gal.) of water for each electrical dollar spent. Because condensation gives off heat a dehumidifier acts as a heat source. This can be useful in spring or fall, when basements tend to be cool. In mid-summer, the heat added by a dehumidifier is counterproductive.