- HEP Heat and Air
- Advanced Dehumidification Systems

Advanced Dehumidification Systems
Advanced Dehumidification Systems | Dehumidifier Installation | Heating and Air Conditioning
When East Tennessee’s humidity starts to seep into every corner of your home, HEP’s advanced dehumidification systems step in to keep things cool, comfortable, and protected. Our licensed HVAC pros design each dehumidifier installation to work seamlessly with your existing heating and air conditioning, quietly pulling excess moisture from the air, reducing allergens, and helping your AC run more efficiently—all while guarding your home against mold, warped wood, and musty odors.
From the first moisture reading to the final walkthrough, we handle everything: custom sizing, precision ductwork, smart-control integration, and ongoing maintenance. Backed by 24/7 service and HEP’s “Happy You’ll Be” guarantee, we make it easy to breathe healthier air and lower energy bills—so you can enjoy a drier, cozier home all year long.
FAQs
What are the main benefits of installing a whole-home dehumidifier compared to using portable units?
A professionally installed whole-home dehumidifier is tied directly into your HVAC ductwork, so it treats every conditioned space in one pass instead of room-by-room. This delivers consistent humidity control (typically 45–55 % RH), helps your air conditioner run more efficiently, reduces mold, musty odors and dust-mite populations, and protects wood floors, furniture and electronics from excess moisture. Unlike portable units, it drains automatically—no buckets to empty—operates quietly out of sight, and is sized for your home’s exact load requirements to avoid short cycling or under-performance.
How can I tell if my home actually needs a dedicated dehumidification system?
Warning signs include indoor relative humidity regularly above 55 %, fogging windows, musty smells, visible mold spots on walls or vents, cupping hardwood floors, allergy or asthma flare-ups, and the need to set the thermostat uncomfortably low just to feel dry. A quick way to verify is to place an inexpensive hygrometer in several rooms for a week. If readings stay high, your air conditioner alone is not handling the latent (moisture) load. Our technicians also perform a Manual J load calculation and use data-logging instruments to confirm that a dehumidifier will provide measurable comfort and IAQ improvements.
How is a whole-house dehumidifier integrated with my existing heating and air-conditioning equipment?
During installation, the unit is mounted in the mechanical room, attic or crawl space and connected to the supply or return plenum with short duct runs. A dedicated return draws moist air into the dehumidifier; the dried air is then discharged into the supply trunk so it mixes with conditioned air from the furnace or heat pump. The system has its own humidistat, which can be wall-mounted or tied into a compatible smart thermostat to coordinate with cooling cycles. Condensate is routed to the existing drain line or an exterior discharge, and an overflow safety switch is added for flood protection.
What does the installation process involve and how long will it take?
Most residential jobs are completed in one day. We start with a site visit to determine placement, electrical availability (120 V or 240 V depending on capacity), and drainage route. On installation day we: (1) shut off power to the HVAC system; (2) fabricate and attach insulated duct collars; (3) set the dehumidifier and secure vibration pads; (4) run rigid or flex duct to the supply/return trunks; (5) wire the unit to a dedicated breaker and connect the humidistat; (6) install PVC condensate piping with a P-trap and clean-out; and (7) commission the system by verifying airflow, refrigerant pressure, amp draw and humidity set-points. We leave the area clean and review operating instructions with you.
How much maintenance does the system require, and can I do it myself?
Maintenance is simple and can be handled by most homeowners. The MERV-rated intake filter should be inspected every 3–6 months and either cleaned or replaced (depending on model). The condensate line should be flushed with a 50/50 vinegar solution annually to prevent algae buildup. We also recommend checking that the humidistat is calibrated. During your regular HVAC tune-up, our technicians will inspect the evaporator coil, blower assembly and electrical connections, update firmware if applicable, and record performance data. Following these steps, most units deliver 10–15 years of reliable service.
Will running a whole-home dehumidifier increase my energy bills?
While the dehumidifier itself uses electricity, most homeowners see little to no net increase—and many notice a reduction—because drier air feels cooler. This allows you to raise the thermostat 2–3 °F in summer without sacrificing comfort, cutting compressor run-time. Lower indoor humidity also reduces the latent load on your air conditioner, so it cycles less frequently and lasts longer. Modern units are Energy-Star® certified, drawing as little as 4–6 cents per hour to operate. Overall, the system often pays for itself through energy savings, reduced AC wear, and protection of moisture-sensitive belongings.