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We are big proponents of using whole-house dehumidifiers in Riverdale, GA and throughout South Metro Atlanta. Georgia experiences high humidity during much of the summer, and this humidity not only makes it much harder to stay cool, it can lead to damage to homes due to mold growth, the presence of bad odors, and even health issues because of black mold spores. Arranging with us to install a whole-house dehumidifier will make a huge difference in your house, and not just for comfort.
If you’ve already got a whole-house dehumidifier, you can’t expect it to just keep working year after year without problems, especially considering how much moisture it must remove from your indoor air. You need to take care of some regular maintenance steps and schedule professional maintenance as well. That’s because excess humidity can increase VOC levels in indoor air, impacting both comfort and health.
How Do Indoor Air Quality Services Maintain a Whole-House Dehumidifier?
- Clean or replace the air filter regularly to maintain proper airflow
- Inspect and clean coils to prevent buildup that reduces efficiency
- Check and clear the condensate drain line to avoid clogs or leaks
- Test humidity controls and recalibrate settings if needed
- Inspect electrical connections and components for wear
- Schedule professional maintenance to extend system lifespan
Here are our tips for getting a long life and best performance from your whole-house dehumidifier.
Replace or Clean the Dehumidifier Air Filter
The dehumidifier has its own air filter to stop dust and other debris from getting into it. Just like the blower filter on your HVAC cabinet, this filter will eventually clog up and need to be replaced or else it will reduce the system’s efficiency. The filter will usually need to be replaced every month during the summer (or cleaned if it uses a permanent filter).
Check and Clean the Dehumidifier Condensate Drain Line
A whole-house dehumidifier removes moisture from the air, which collects as condensate. This condensate has to drain properly or else it will remain in the dehumidifier and damage it as well as get back into the air. Regularly inspect the condensate drain line for any blockages or buildup. If you notice clogs, use a pipe cleaner to clear it out. Additionally, ensure that the drain line is securely connected and isn’t leaking.
Clean the Dehumidifier Water Collection Reservoir
Many whole-house dehumidifiers have a water collection reservoir that needs to be emptied regularly. (Some will remove the water outside.) If this isn’t routinely emptied, stagnant water can become a breeding ground for bacteria and mold. Empty the reservoir on a regular schedule, which you’ll find in the manufacturer’s manual. Wipe it clean with detergent or a vinegar solution before putting it back in place.
Maintain the Ideal Indoor Relative Humidity Level
Setting and maintaining the ideal relative humidity (RH) level is essential for your comfort and the longevity of the dehumidifier. Most experts recommend keeping the indoor RH between 30% and 50%, and we think 45% is usually the best. Managing humidity helps reduce indoor air dryness, which can cause respiratory discomfort and irritation.
Schedule Professional Whole-House Dehumidifier Maintenance
This is the most crucial step. The steps above are important, but only professionals can really get into your dehumidifier and do the inspections, cleanings, and adjustments that will keep it in great shape. Technicians can identify and address any potential problems before they get worse, saving you from costly repairs down the line. We recommend you schedule professional maintenance with us once a year. To make it easier, you can include it as part of either your annual air conditioning maintenance or heating maintenance appointment. Routine service also supports cleaner, healthier indoor air by keeping your ductwork free of dust and allergens.
No matter what service you need for your whole-house dehumidifier—maintenance, repair, full replacement—you can depend on our team. We offer guaranteed same-day service.
Frequently Asked Questions
Question: How often should I replace or clean the air filter in my whole-house dehumidifier?
Answer: During high-use months like summer, it’s best to clean or replace the dehumidifier’s air filter monthly. A clogged filter can reduce efficiency and strain the system, so regular maintenance keeps performance at its best.
Question: Why is the condensate drain line important for dehumidifier function?
Answer: The drain line removes collected moisture from the system. If it gets clogged or disconnected, water can back up into the unit, causing damage or reintroducing moisture into the air. Regular inspection and cleaning are essential.
Question: Do I need to empty the water reservoir in a whole-house dehumidifier?
Answer: Yes, if your system has a water collection tank instead of draining outdoors. Empty it regularly as directed by the manufacturer and clean it with detergent or vinegar to prevent bacteria and mold buildup.
Question: What’s the ideal humidity level to set on a whole-house dehumidifier?
Answer: Experts recommend maintaining indoor relative humidity between 30 and 50 percent. Setting your system around 45 percent typically offers the best balance for comfort, moisture control, and system performance.
Question: Should I schedule professional maintenance for my dehumidifier?
Answer: Absolutely. A professional can perform deep inspections, cleanings, and tune-ups that go beyond DIY care. Annual maintenance helps prevent breakdowns, extends the system’s lifespan, and ensures optimal performance year-round.