Cleaning your Dimplex dehumidifier regularly ensures it works efficiently and lasts longer. This guide walks you through a complete cleaning process, from unplugging the unit to reassembling it safely.
Quick Answers to Common Questions
How often should I clean my Dimplex dehumidifier?
Clean the water tank and filter every 2 to 4 weeks during heavy use. Wipe the exterior monthly and deep-clean the coils every 3 to 6 months.
Can I use bleach to clean the water tank?
No. Bleach can leave harmful residues and damage plastic parts. Use mild soap or white vinegar instead.
What if my filter is not washable?
Replace it with a new one. Check your user manual for the correct filter model or contact Dimplex support.
Is it safe to vacuum the coils?
Yes, but use a soft brush attachment and gentle suction. Avoid pressing too hard to prevent bending the fins.
Why is my dehumidifier still smelling musty after cleaning?
Mold may be growing inside the unit. Try a dehumidifier cleaner spray or consult a technician for internal cleaning.
How to Clean a Dimplex Dehumidifier: A Complete Step-by-Step Guide
If you own a Dimplex dehumidifier, you already know how helpful it is at reducing excess moisture in your home. Whether you’re fighting dampness in a basement, preventing mold in a closet, or just trying to breathe easier during humid summers, your dehumidifier works hard behind the scenes. But like any appliance, it needs regular maintenance to keep performing at its best.
Over time, dust, mold, and mineral deposits can build up inside your Dimplex dehumidifier. This not only reduces its efficiency but can also lead to unpleasant odors, poor air quality, and even mechanical failure. The good news? Cleaning your Dimplex dehumidifier is simple, safe, and only takes about 20 to 30 minutes if you do it regularly.
In this guide, you’ll learn exactly how to clean a Dimplex dehumidifier the right way. We’ll walk you through every step—from unplugging the unit to reassembling it—so you can keep your dehumidifier running smoothly for years to come. Whether you’re a first-time cleaner or just need a refresher, this guide has everything you need.
Why Cleaning Your Dimplex Dehumidifier Matters
Before we dive into the steps, let’s talk about why cleaning matters. A dirty dehumidifier doesn’t just look bad—it can actually make your indoor air quality worse. Here’s what happens when you skip regular cleanings:
– **Reduced efficiency:** Dust and grime on the coils and filter block airflow, forcing the unit to work harder and use more energy.
– **Mold and bacteria growth:** Standing water in the tank or damp filters create the perfect breeding ground for mold and mildew.
– **Unpleasant odors:** Stagnant water and organic buildup can produce musty smells that spread through your home.
– **Shorter lifespan:** Clogged components strain the motor and compressor, leading to early breakdowns.
Cleaning your Dimplex dehumidifier every 2 to 4 weeks during heavy use (like in summer or in damp areas) can prevent these problems. Even during lighter use, a monthly check is a smart habit.
What You’ll Need
Before you start, gather these supplies so you’re ready to go:
- Soft cloth or sponge
- Mild dish soap or white vinegar
- Warm water
- Soft-bristled brush (like an old toothbrush)
- Vacuum cleaner with a brush attachment (optional)
- Compressed air (optional, for tight spaces)
- Replacement air filter (if needed)
- Rubber gloves (optional, for hygiene)
Avoid harsh chemicals, abrasive scrubbers, or bleach—these can damage plastic parts or leave harmful residues.
Step 1: Turn Off and Unplug the Unit
Safety first! Before you touch anything, make sure your Dimplex dehumidifier is completely powered down.
Unplug from the wall
Locate the power cord and pull it from the outlet. Never clean a plugged-in appliance—even if it’s turned off. There’s still a risk of electric shock.
Visual guide about How to Clean a Dimplex Dehumidifier
Image source: waterleak.co.uk
Let the unit cool down
If you’ve been running the dehumidifier recently, give it 10 to 15 minutes to cool off. The internal components, especially the compressor, can get warm during operation.
Move to a clean workspace
If possible, carry the unit to a well-lit, dry area like a garage, basement, or utility room. Lay down a towel or newspaper to protect surfaces and catch any drips.
Step 2: Remove and Empty the Water Tank
The water tank is the most frequently cleaned part of your dehumidifier. It collects moisture pulled from the air, so it’s prone to slime, mold, and mineral buildup.
Locate the water tank
On most Dimplex models, the tank slides out from the front or side of the unit. Look for a handle or recessed area. Some models have a “tank full” indicator light—this will turn off once the tank is removed.
Carefully remove the tank
Grip the handle and pull the tank straight out. Be gentle—some tanks have sensors or float mechanisms that can break if forced.
Empty the water
Pour the collected water down a sink or drain. Never reuse this water—it may contain impurities or bacteria.
Rinse the tank
Rinse the inside with warm water to remove loose debris. For stubborn residue, fill the tank halfway with warm water and a few drops of dish soap. Swirl it around, then pour it out.
Scrub with a brush
Use a soft-bristled brush (like a toothbrush) to scrub the corners, lid, and spout. Pay special attention to areas where water drips or pools. If you notice a slimy film, this is a sign of biofilm—common in humid environments.
Disinfect with vinegar (optional)
For extra cleanliness, mix equal parts white vinegar and water. Let the solution sit in the tank for 10 to 15 minutes, then rinse thoroughly. Vinegar kills mold and neutralizes odors naturally.
Air dry completely
Place the tank upside down on a clean towel and let it dry completely before reinserting. Never put a wet tank back into the unit—this can cause leaks or electrical issues.
Step 3: Clean or Replace the Air Filter
The air filter traps dust, pet dander, and other particles before they enter the unit. A clogged filter reduces airflow and forces the dehumidifier to work harder.
Locate the filter
Most Dimplex dehumidifiers have a removable filter behind a front or side grille. Look for a panel that slides or snaps off. Some models have a filter indicator light that alerts you when it’s time to clean.
Remove the filter
Gently pull the filter out. It’s usually made of fine mesh or foam. Handle it carefully to avoid tearing.
Vacuum the filter
Use a vacuum with a brush attachment to remove loose dust from both sides. This is often enough for light cleaning.
Rinse with water (if washable)
If your filter is labeled “washable,” rinse it under lukewarm water. Avoid hot water—it can warp the material. Gently squeeze out excess water; don’t wring it.
Soak in soapy water (for heavy buildup)
For filters with stubborn grime, soak in a bowl of warm water and mild soap for 10 minutes. Scrub gently with a soft brush, then rinse.
Let it dry completely
Place the filter on a towel and let it air dry for at least 2 hours. Never reinstall a damp filter—moisture can damage internal components.
Replace if damaged
If the filter is torn, brittle, or no longer traps dust, replace it with a compatible Dimplex filter. Check your user manual for the correct model number.
Step 4: Clean the Interior and Coils
The evaporator and condenser coils are the heart of your dehumidifier. They cool the air to remove moisture, but dust and debris can coat them over time, reducing efficiency.
Access the interior
Depending on your model, you may need to remove a front panel or side cover. Use a screwdriver if screws are present. Refer to your user manual for specific instructions.
Vacuum loose debris
Use a vacuum with a brush attachment to gently remove dust from the coils, fan blades, and surrounding areas. Be careful not to bend the delicate fins on the coils.
Brush stubborn dirt
For caked-on dust, use a soft-bristled brush to loosen it. Work in the direction of the fins to avoid damage.
Use compressed air (optional)
For tight spaces, a can of compressed air can blow out dust without touching the components. Hold the can upright and use short bursts.
Wipe with a damp cloth
Dampen a cloth with water and wipe down accessible interior surfaces. Avoid getting water near electrical parts.
Check the drain hose (if applicable)
Some Dimplex models have a continuous drain hose. Detach it and flush it with water to remove clogs. Use a pipe cleaner or brush if needed.
Step 5: Wipe Down the Exterior
A clean outside makes a big difference in appearance and hygiene.
Unplug and cool down
Make sure the unit is still unplugged and cool.
Dust the surface
Use a dry cloth or duster to remove surface dust from the casing, vents, and control panel.
Wipe with a damp cloth
Dampen a soft cloth with water and a drop of mild soap. Wipe down the entire exterior, including the handle and display. Avoid spraying liquid directly on the unit.
Clean the control panel
Use a slightly damp cloth to gently wipe buttons and screens. Never use abrasive cleaners or excessive moisture.
Dry thoroughly
Use a dry cloth to remove any remaining moisture. Let the unit air dry for 10 minutes before reassembling.
Step 6: Reassemble and Test the Unit
Once everything is clean and dry, it’s time to put your Dimplex dehumidifier back together.
Reinstall the filter
Slide the clean, dry filter back into its slot. Make sure it’s seated properly and the cover is securely closed.
Reinsert the water tank
Place the dry tank back into the unit. Push it in until it clicks or sits flush. Ensure the “tank full” sensor isn’t blocked.
Reattach any panels
If you removed screws or covers, replace them carefully. Don’t overtighten.
Plug in and power on
Plug the unit back into a grounded outlet. Turn it on and set your desired humidity level.
Run a test cycle
Let the dehumidifier run for 15 to 20 minutes. Listen for unusual noises and check that air is flowing from the vents. If the “tank full” light comes on immediately, the tank may not be seated correctly.
Troubleshooting Common Cleaning Issues
Even with careful cleaning, you might run into a few hiccups. Here’s how to handle them:
Unit won’t turn on after cleaning
Double-check that the water tank is fully inserted and the filter cover is closed. Some models have safety switches that prevent operation if these aren’t in place.
Strange noises during operation
Rattling or grinding sounds may mean a component is loose. Turn off the unit, unplug it, and inspect for loose screws or foreign objects.
Reduced moisture removal
If the dehumidifier isn’t pulling water like before, the coils may still be dirty or the filter clogged. Recheck both and clean again if needed.
Leaking water
Ensure the tank is properly seated and not cracked. Check the drain hose (if used) for kinks or blockages.
Persistent odors
If smells return quickly, consider using a dehumidifier cleaner spray or placing a small bowl of baking soda inside the tank between uses.
How Often Should You Clean Your Dimplex Dehumidifier?
Cleaning frequency depends on usage and environment:
- High humidity areas (basements, laundry rooms): Clean every 2 weeks.
- Moderate use (living rooms, bedrooms): Clean monthly.
- Seasonal use (only in summer): Clean before and after each season.
- After flooding or mold exposure: Clean immediately and consider professional inspection.
Set a reminder on your phone or calendar to stay on track.
Final Tips for Long-Term Care
– **Use a hygrometer** to monitor indoor humidity. Aim for 30–50% to reduce strain on the unit.
– **Keep the area around the dehumidifier clear**—at least 6 inches of space on all sides for proper airflow.
– **Avoid placing the unit near heat sources** like furnaces or radiators.
– **Store properly during off-seasons**—clean thoroughly, remove the tank, and cover with a breathable cloth.
Conclusion
Cleaning your Dimplex dehumidifier isn’t just about keeping it looking nice—it’s about maintaining performance, improving air quality, and extending the life of your appliance. By following this step-by-step guide, you’ll ensure your dehumidifier runs efficiently and safely year after year.
Remember: a little maintenance goes a long way. With regular cleanings, your Dimplex dehumidifier will continue to protect your home from excess moisture, mold, and musty odors. So grab your supplies, set aside 30 minutes, and give your unit the care it deserves. Your home—and your lungs—will thank you.