★ 3,066 Google reviews
Heating & cooling in Winchester, Wilmington & Norfolk

Whole-house dehumidifier installation for sticky summers and dry winters.

House feels clammy even with the AC running, or bone-dry all winter? We install whole-home dehumidifiers and humidifiers that work with your heating and cooling system, so every room feels right.

Available in: Winchester & Wilmington, and Norfolk from January 2027

Wall-mounted whole house dehumidifier after a dehumidifier installation
Humidity control

“The AC is running, but the house still feels sticky.”

In a humid summer, the temperature is only half the story. The other half is moisture.

An AC removes some humidity as it cools, but on muggy days, or with an oversized system, it can't keep up. A whole-house dehumidifier connects to your system or ductwork and pulls out the extra moisture, so the house feels cooler at a higher thermostat setting. It's also a fix for damp basements and crawlspaces.

Winter is the opposite. Heating dries the air out, leading to static, dry skin and gaps in wood floors. A whole-home humidifier on the furnace adds moisture back. Your technician checks your home and system and recommends what actually fits.

In Winchester we install Aprilaire whole-home humidifiers and dehumidifiers. In Wilmington we install whole-home and crawlspace dehumidifiers.

  • Clammy, sticky air in summerDehumidifier
  • Damp basement or crawlspaceDedicated dehumidifier
  • Static and dry air in winterWhole-home humidifier
  • AC set low just to feel comfortableMoisture is the problem
  • Musty smellsMoisture and air quality →
Too wet or too dry?

Dehumidifier or humidifier?

Most homes are comfortable between about 40% and 50% relative humidity. Here's what each does.

Summer

Whole-house dehumidifier

Pulls moisture out of the air throughout the house or crawlspace and drains it away. No buckets to empty.

  • Less sticky, clammy air
  • Comfortable at a higher setting
  • Helps damp basements and crawlspaces
Winter

Whole-home humidifier

Adds moisture to the air as your furnace or heat pump runs, controlled by a humidistat. Installed by our Winchester team.

  • Less static and dry air
  • Helps protect wood floors and trim
  • Set it and forget it
How the visit goes

What happens when you book

The same steps on every visit, so you always know what's next.

  1. You book

    Online or by phone. We tell you the diagnostic fee before we book.

  2. We confirm

    A confirmation, a reminder, then an “on the way” notice.

  3. At your door

    Your technician introduces themselves. Uniform, ID badge, marked truck, shoe covers.

  4. We test the whole system

    Not just the part that failed. Then your options, in plain English.

  5. You approve

    A written, flat-rate price, signed before work starts.

  6. Fixed and checked

    If a part has to be ordered, we tell you when and book the return. Photos come with your invoice.

How pricing works

Know the price before you commit.

Free in-home estimate on new equipment, then a written price you sign before we start.

Financing on jobs of $500 or more
  1. Free estimateIn-home estimates on new systems cost nothing.
  2. Good, better, bestSide-by-side options with what each costs to run.
  3. You approveA written price, signed before we start.
  4. Pay your wayCash, card or Wisetack financing on $500 or more.
How it's installed

Built into your system, not sitting in a corner.

Whole-home units work with the heating and cooling you already have.

Condensate pump connected to HVAC equipment
Dehumidifier

Ducted or crawlspace unit

Mounted near the air handler or in the crawlspace, ducted to the system and drained to a condensate line or pump.

Whole-home dehumidifier mounted on a garage wall
Humidifier

On the furnace

Mounted on the furnace ductwork with a water supply and a humidistat to control it.

Ask about a thermostat that controls humidity too.

What affects the price

  • Dehumidifier, humidifier or both
  • Size of the home or crawlspace
  • Ductwork, drain and water connections
  • Controls and thermostat
Heating & cooling reviews

What homeowners say about our HVAC techs

4.8
★★★★★
3,066 Google reviews · 3 branches
162

Google reviews mention our heating and cooling work.

93% of them are five-star.

Sticky summers or dry winters?

Book a free in-home estimate for whole-home humidity control.

Find your nearest Powell's branch →

Humidity control FAQs

Questions about humidity control

Settings, cost and how they work.

How much does a whole-house dehumidifier cost to install? +

It depends on the size of the home or crawlspace, the unit and how it connects to your system and drain. In-home estimates are free, and you get a written price before any work starts. Financing is available on jobs of $500 or more.

What should I set a whole-house humidifier to? +

Around 35% to 45% in winter is comfortable for most homes. Go lower on very cold days, or you may see condensation on the windows. Many humidistats adjust for outdoor temperature automatically.

Does a dehumidifier make a room cooler? +

It doesn't lower the temperature, but drier air feels cooler. Many homeowners find they can raise the thermostat a couple of degrees and stay just as comfortable.

Can you add a humidifier to my furnace? +

In Winchester, usually yes. A whole-home humidifier mounts on the furnace ductwork with a small water line and a humidistat. Heat pump systems can use them too.

Do you install crawlspace dehumidifiers? +

Yes. A dedicated crawlspace dehumidifier keeps the space under your home dry, which protects the floor framing, ductwork and insulation down there.

(540) 665-8196 Book Online