Dehumidifiers
MTB Mechanical installs, repairs, and maintains whole-home dehumidifiers for homes throughout Matthews, NC and neighboring areas, including Stallings, Belmont, and Kings Mountain. A whole-home dehumidifier ties into your existing ductwork to control humidity across the entire house, instead of managing just one room the way a portable unit does.
Charlotte’s summers run hot and humid for months at a time, and a standard air conditioner is built to cool the air, not necessarily to pull enough moisture out of it on its own, which is why many Matthews-area homes end up feeling damp or musty even with the AC running constantly.

Dehumidifier Inspection & Repair Services
Our certified technicians diagnose dehumidifiers that have stopped removing moisture, are icing over, or are running constantly without lowering humidity, checking refrigerant levels, the drain line, and the controls to find the actual cause. Most repairs are completed the same visit using parts carried on the truck, and the repair is quoted by the job before work begins.
Dehumidifier Installations
Installation starts with sizing the unit to the home’s square footage and typical humidity levels, then tying it into your existing ductwork so it treats the whole home rather than a single room. Our technicians confirm drain line placement and electrical requirements before scheduling the work.
Dehumidifier Maintenance
Scheduled dehumidifier maintenance checks the coils, drain line, and controls, since a clogged drain line or dirty coil are the most common causes of a unit that stops keeping up. A maintenance visit follows a documented checklist and ends with the unit tested through a full cycle.

Breathe Easier with Expert Indoor Air Quality Services in Matthews, NC
And Dozens More
Qualified for All Major Makes and Models
Our team of expert technicians is trained to handle all makes and models of major brands with precision and care. From routine maintenance to complex repairs, we ensure top-notch service for all.
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Ensure optimal efficiency of all your systems
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Lower your utility costs with energy efficiency
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Extend your system’s lifespan through regular maintenance
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Keep you and your family comfortable and safe during all seasons
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FAQs
How do I determine the right size of dehumidifier for my space?
Determining the right size of dehumidifier for your space depends on various factors. First, calculate the square footage of the area you want to dehumidify. Next, consider the relative humidity level and any specific moisture issues. For moderate humidity, a general guideline is to select a dehumidifier with a capacity of 10 to 12 pints per day per 500 square feet. However, a larger capacity may be necessary for high humidity or severe moisture issues. Additionally, factors like room temperature and airflow should be taken into account.
Can a dehumidifier be used in basements or in cold temperatures?
Dehumidifiers can be used in cold temperatures and basements. However, not all models are designed to operate efficiently in cold environments. Look for dehumidifiers with built-in defrost functions or those specifically labeled for low-temperature use. Dehumidifiers in basements are particularly effective as they help control moisture levels and prevent mold and mildew. Ensure proper ventilation and use a dehumidifier that suits your space’s size and humidity level.
What is the ideal humidity level to maintain with a dehumidifier?
The ideal humidity level to maintain with a dehumidifier is typically between 30% and 50%. This range helps prevent mold growth, dust mites, and allergens while creating a comfortable indoor environment. However, preferences may vary, so it’s important to find a humidity level that suits your needs and ensures the well-being of your space and health.
How do I know if my home needs a dehumidifier?
Signs include musty odors, condensation on windows, a damp feeling even with the air conditioner running, or visible mold in bathrooms and closets. A technician can measure your home’s humidity and recommend a unit sized to the space.
What's the difference between a portable dehumidifier and a whole-home unit?
A portable unit treats a single room and needs its water tank emptied regularly, while a whole-home dehumidifier ties into your ductwork, drains automatically, and controls humidity throughout the house.
Why is my dehumidifier running constantly without lowering humidity?
This usually points to a unit that is undersized for the home, a dirty coil restricting airflow, or a refrigerant issue. A technician can diagnose the specific cause during a service visit.
How often should a whole-home dehumidifier be serviced?
Most whole-home dehumidifiers benefit from one maintenance visit a year, ideally scheduled before the humid season starts, to check the coils, drain line, and controls.
Can a dehumidifier help with mold or musty odors in my home?
Yes. Reducing excess humidity removes the moisture that mold and musty odors depend on, though a technician should also identify and address the source of any existing moisture problem.

We Offer Maintenance Plans!
- Improved system performance and energy efficiency
- Prolonged lifespan of HVAC and IAQ equipment
- Reduced potential for costly breakdowns and repairs
- Enhanced indoor air quality for a healthier environment
- Priority scheduling and prompt service when needed
- Savings with preventive maintenance & discounted diagnostic charge

HVAC & IAQ Financing Available
Financing plans bring value and benefits to homeowners. By opting for a financing option, you can tackle necessary upgrades without draining your savings or delaying important projects. Here are some key advantages:
- Budget-Friendly
- Access to Quality Services
- Flexibility
- Emergency Protection
Keep your home safe and comfortable with a finance plan. Always assess terms and interest rates to find the best one for your needs. A professional can help you make an informed decision.
Learn MoreRenee Gillespie
In a single day, MTB helped replace our entire HVAC system, including A/C, furnace and duct work. They were punctual, communicative and hardworking. When they left, the house was clean and everything was where it should be. Our new system is working flawlessly and we're grateful for MTB's help!
Ron Rovner
We have been MTB customers for 7 years and they have always done the right thing by us! In our new house now and we had the technician install a Reme Halo and as always, he gets our top rating! Great service and great techs!
Patty Griffin
MTB is wonderful. They replaced our HVAC systems at our old house several years ago and also here at our new home. Very professional and they do amazing work. We couldn’t be happier!
Charlotte's Trusted HVAC Provider: Expertise in Comfort & Care
MTB Mechanical has provided heating, cooling, and indoor air quality service to Matthews and the Charlotte metro area for more than 20 years. The company's approach is summed up by its own phrase, the science of comfort: measure the home, design the system to fit it, and price the work by the job so the cost is known before the work starts. Scheduling is available online, website chat answers around the clock, and Priority Comfort members receive preferential scheduling when they need service.
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