How Professional Drying Equipment Works: Dehumidifiers and Air Movers
After water damage, homeowners sometimes wonder why restoration companies bring in large amounts of equipment when opening windows and running a household fan might seem sufficient. The reality is that professional structural drying requires industrial equipment working in a carefully calculated system. At WrightWay Emergency Services, our IICRC-certified technicians use commercial-grade dehumidifiers and air movers together to create optimal drying conditions throughout your SW Florida home.
Why You Need Both: The Drying Partnership
Air movers and dehumidifiers serve complementary functions that cannot work effectively in isolation:
- Air movers accelerate evaporation — they move moisture out of wet building materials and into the air
- Dehumidifiers remove moisture from the air — they capture the water vapor that air movers have pulled from wet materials
Without air movers, moisture stays trapped in materials even with dehumidification running. Without dehumidifiers, the air quickly becomes saturated and evaporation stops — a critical problem in Florida’s already humid climate. The two work as a system, and the ratio and placement of each is calculated based on the specific conditions of your water loss.
Types of Professional Dehumidifiers
Low Grain Refrigerant (LGR) Dehumidifiers
LGR dehumidifiers are the workhorses of water damage restoration. They use a refrigeration cycle to cool incoming air below its dew point, causing moisture to condense on cold coils. The collected water drains into a reservoir or is pumped to a drain line. A quality LGR unit removes 17 to 30 gallons of water per day — compared to the 2 to 3 gallons a residential unit handles. LGR units are effective in temperatures ranging from approximately 65 to 95 degrees Fahrenheit, making them well suited for Florida’s climate.
Desiccant Dehumidifiers
Desiccant dehumidifiers use a chemical desiccant (typically silica gel) on a rotating wheel to absorb moisture from the air. They are most effective in lower-temperature environments (below 65 degrees) and very low-humidity conditions where LGR units lose efficiency. In SW Florida, desiccant units are less commonly needed but are used for specialty applications like drying concrete slabs and in climate-controlled environments that must remain cool.
Types of Air Movers
Professional air movers are high-velocity fans designed specifically for water damage restoration:
- Centrifugal air movers: The most common type, producing a focused stream of air at high velocity. They are positioned at angles to create airflow across wet surfaces, breaking the boundary layer of saturated air and accelerating evaporation.
- Axial air movers: Produce higher volume airflow over a larger area. Used for drying large open spaces like warehouses, gymnasiums, and open-plan commercial buildings.
- Low-profile air movers: Designed to fit under raised flooring, cabinets, and in tight spaces where standard air movers cannot reach. Essential for drying hardwood floors and under kitchen and bathroom cabinets.
Equipment Placement Strategy
The placement of drying equipment is not random — it follows psychrometric principles established in the IICRC S500 Standard for Professional Water Damage Restoration:
- Air movers are placed at angles: Typically at 15 to 45 degree angles to the wet surface, creating a vortex of air movement that draws moisture out of materials
- Quantity is calculated: The general guideline is one air mover per 10 to 16 linear feet of wall, but this varies based on material type and saturation level
- Dehumidifier capacity is matched: Total dehumidification capacity must be sufficient to remove the moisture that air movers are releasing into the air. Undersizing dehumidification is a common mistake made by less experienced restoration companies — the air becomes saturated and evaporation stops.
- Closed drying system: Doors and windows are kept closed to maintain a controlled environment where humidity can be driven below 40 percent. This is especially important in SW Florida, where opening windows introduces humid outdoor air that actively works against the drying process.
What About the Electric Bill?
A common concern we hear from homeowners across Sarasota, Fort Myers, and Naples is the electricity cost of running commercial drying equipment for multiple days. A typical residential drying setup — four to six air movers and one LGR dehumidifier — draws approximately 8 to 12 amps on a 120-volt circuit and may increase your electric bill by $50 to $150 for the drying period. The important point is that these electricity costs are a covered expense on your insurance claim. Keep your electric bills from the month of the loss to document the increase and submit them to your adjuster for reimbursement.
Daily Monitoring and Adjustment
Equipment is not simply placed and left alone. Our IICRC-certified technicians visit daily to take moisture readings from all affected materials and adjust equipment placement as the drying progresses. As some areas dry faster than others, equipment is repositioned to focus on remaining wet areas. This active management significantly reduces overall drying time and ensures no areas are left with residual moisture that could lead to mold growth weeks later. Daily monitoring with documented drying logs is a requirement of the IICRC S500 standard and is essential for insurance claim documentation.
For professional drying services using commercial-grade equipment, contact WrightWay Emergency Services at (941) 379-8669. We serve homes and businesses throughout Sarasota, Manatee, Lee, Charlotte, and Collier counties with 24/7 emergency response and proper equipment placement that gets your home dry to standard as quickly as possible.
