- HEP Heat and Air
- Whole-home Dehumidifiers

Whole-home Dehumidifiers
Whole-home Dehumidifiers | Ventilation and Air Quality | Heating and Air Conditioning | Dandridge
In picturesque Dandridge, damp summer air and chilly winter drafts can silently erode the comfort and health of your home. HEP’s whole-home dehumidifiers work hand-in-hand with our cutting-edge heating and air conditioning systems, pulling excess moisture from every corner, balancing temperatures, and preventing mold before it starts. By integrating humidity control directly into your HVAC, we help you protect hardwood floors, preserve family heirlooms, and breathe easier—without the need for noisy, energy-hungry portable units.
When you invite HEP’s certified technicians into your house, you’re choosing a team that designs solutions around the unique character of East Tennessee construction and climate. We fine-tune airflow, upgrade filters, and seal ductwork to elevate ventilation and air quality, all while keeping energy bills in check. From the first on-site evaluation to routine maintenance reminders, our local experts stand by you, ensuring that every season in Dandridge feels just right—fresh, dry, and perfectly comfortable.
FAQs
Why do I need a whole-home dehumidifier in Dandridge if I already have air conditioning?
Air conditioning does remove some moisture, but it is designed primarily to control temperature. East Tennessee’s summer humidity routinely climbs above 70 %, and an AC alone often short-cycles before it can wring out enough moisture. A dedicated whole-home dehumidifier keeps indoor relative humidity in the ideal 45-50 % range, preventing that clammy feeling, reducing musty odors, and helping to stop mold growth—even on milder spring and fall days when the AC may not run at all.
How is a whole-home dehumidifier installed and integrated with my existing HVAC system?
The unit is usually mounted in the mechanical room, crawl space, or attic and tied directly into the supply or return plenum of your forced-air system. Our technicians cut in a dedicated duct run, wire the dehumidifier to the same 120-V or 240-V circuit as required, and add a condensate drain line or pump. A wall-mounted humidistat or your smart thermostat then commands the dehumidifier to cycle automatically, so you have one seamless control for temperature, humidity, and ventilation.
What size dehumidifier does my home need, and how is capacity calculated?
Whole-home dehumidifiers are rated in pints of moisture removed per day (PPD). Sizing depends on your home’s square footage, number of occupants, airtightness, and typical indoor moisture sources (showers, cooking, crawl-space moisture). In Dandridge, most 1,800–2,500 sq ft homes do well with a 70–90 PPD unit, while larger or older leaky homes may need 115 PPD or more. A load calculation performed during a free in-home assessment ensures the equipment isn’t undersized (runs constantly) or oversized (short-cycles and wastes energy).
How will adding a dehumidifier affect my energy bills?
Homeowners often see a net reduction in overall energy use. By keeping humidity in check, the air feels cooler, allowing you to raise the thermostat 2–3 °F without sacrificing comfort—every degree can save about 3 % on cooling costs. Modern dehumidifiers use efficient scroll compressors and EC fans, consuming roughly 4–6 ¢ per hour. In many cases, the electricity the dehumidifier uses is offset by shorter AC runtimes and reduced wear on your cooling equipment.
What maintenance does a whole-home dehumidifier require?
Maintenance is minimal: 1) Replace or clean the internal air filter every 3–6 months; 2) Check and clear the condensate drain line at least once a year; 3) Inspect the coil for dust or pet hair buildup; 4) Confirm the humidistat is reading accurately. During your annual HVAC tune-up, our technician will perform all these steps, verify refrigerant pressures, and ensure the blower and duct connections remain airtight.
Can a dehumidifier really improve indoor air quality and help with allergies?
Yes. Dust mites, mold spores, and many bacteria thrive when RH exceeds 60 %. By keeping humidity in the recommended 40–50 % band, a whole-home dehumidifier makes the environment hostile to these allergens. Lower moisture also prevents condensation inside walls and ductwork, reducing the chance of hidden mold growth. When paired with proper ventilation and high-MERV filtration, you’ll notice fewer allergy flare-ups, less dust settling on furniture, and a fresher-smelling home year-round.