- HEP Heat and Air
- Whole-house Dehumidifiers

Whole-house Dehumidifiers
Whole-house Dehumidifiers | Dehumidifier Installation | Heating and Air Conditioning | Cosby
Feel the mountain-fresh difference in every room of your Cosby home with HEP’s whole-house dehumidifiers. Our licensed HVAC specialists tailor each dehumidifier installation to the unique demands of East Tennessee’s humid climate, integrating top-tier equipment seamlessly into your existing heating and air system. The result is quiet, energy-efficient moisture control that guards against mold, musty odors, and warped wood while making your air conditioner work less—and your family breathe easier.
From the first onsite assessment to the final system check, we treat your home as if it were our own, arriving on time, cleaning up thoroughly, and backing our workmanship with the HEP Happiness Guarantee. Experience superior indoor comfort, lower energy bills, and the peace of mind that comes from partnering with Cosby’s trusted home-service team—schedule your dehumidifier installation today and reclaim the crisp, healthy air you deserve.
FAQs
Why do homes in Cosby need a whole-house dehumidifier?
Cosby’s warm, humid summers and frequent rainfall push indoor relative humidity well above the recommended 30–50 % range. Excess moisture leads to muggy air, musty odors, mold growth, warped wood floors, and higher cooling bills. A whole-house dehumidifier integrated with your HVAC system removes moisture from every conditioned room, improving comfort, protecting your home’s structure, and helping your air-conditioning run more efficiently.
How is a whole-house dehumidifier installed in my existing HVAC system?
Our technicians mount the dehumidifier in the return-air plenum or connect it to dedicated supply and return ductwork. Condensate is piped to a floor drain or condensate pump. We add a humidistat controller that communicates with your thermostat, wire the unit to a 120/240-volt circuit, and balance the airflow so the dehumidifier and air handler work together. Because it ties into your central ductwork, every room served by your HVAC receives balanced, drier air.
Will running a dehumidifier raise my energy bills?
A whole-house dehumidifier typically uses 3–6 amps—about the same as a window A/C unit—but it lets you raise your thermostat 2–4 °F while feeling just as cool. Lower humidity also reduces your air conditioner’s runtime and prevents moisture-related HVAC wear. Most Cosby homeowners see either no net change or a slight drop (3–8 %) in annual energy costs once the system is properly sized and tuned.
What maintenance does a whole-house dehumidifier require?
1) Clean or replace the unit’s MERV-rated filter every 3–6 months. 2) Check and clear the condensate drain line twice a year. 3) Vacuum the exterior coils annually. 4) Have our HVAC technician test the refrigeration charge, blower motor, and humidistat during your spring or fall system tune-up. Routine maintenance takes less than 30 minutes and keeps the dehumidifier operating at peak efficiency for 10–15 years.
How do I know what size (capacity) dehumidifier my home needs?
Sizing is based on square footage, ceiling height, infiltration rate, and typical indoor humidity. Most Cosby residences require 70–120 pints per day; larger cabins or multi-story homes may need 120–155 pints. During a free in-home assessment, we use hygrometers and Manual J load calculations to match your home’s moisture load with the correct capacity so the system cycles properly without short-cycling or running nonstop.
How long does installation take and what does it cost in Cosby?
A straightforward tie-in to existing ductwork takes 4–6 hours; adding dedicated ducts can extend the job to one full day. Costs range from $2,200 to $3,800 for standard 70–95-pint models and $3,800 to $5,500 for high-capacity or ventilating models, including labor, condensate management, and humidistat. We provide upfront, itemized quotes and offer financing options to spread payments over 6–60 months.