The last piece of a proper encapsulated crawlspace. We size the unit to your cubic footage (not by guess), plumb the condensate line to daylight or a sump, and dial in the humidistat so your crawlspace holds a steady 50-55% RH year-round.
A licensed local crew — usually out in 24 to 72 hours. Written scope, fixed price, no pressure.
Every dehumidifier call I take in Weddington starts the same way. Someone in a five-to-ten-year-old luxury home in Weddington Chase, The Landing, Providence Downs, or Marvin Ridge has finally noticed a musty smell that won't leave, put a cheap hardware-store hygrometer down through the crawlspace hatch, and read something between 78% and 92% RH depending on the month. They've called their HVAC guy who told them it was the return duct. They've replaced or resealed the return duct. It didn't fix anything because the return duct was never the problem. The problem is that when the builder framed the house in 2006 or 2010 or 2013, he did not put a dehumidifier on the mechanical plans and did not pull the electrical for one. Your million-plus Weddington custom home was built with the same crawlspace conditioning strategy as a 1972 tract ranch in Cotswold — which is to say, none.
Weddington is the dehumidifier capital of the Charlotte metro. Not because Weddington has worse humidity than Waxhaw or Marvin or Matthews — the outside dew points are within a degree or two across all of them — but because Weddington has the highest concentration of houses that need one and don't have one. The 2004-2012 build boom put thousands of luxury tract and semi-custom homes across Weddington's zip codes 28104 and 28173 with big open crawls, tall clearance, and a mechanical spec that got value-engineered down to "vents plus fiberglass batts" before the drawings were stamped. Every one of those houses is now hitting the age where the humidity has caused visible damage — surface mold on sheathing, sagging fiberglass, sub-floor rot on shaded exposures, and the beginning of joist deflection above the primary bedrooms. And every one of those houses is going to get a properly sized dehumidifier eventually. The choice is whether the owner does it before or after the visible damage forces the issue.
The Aprilaire E100 is the workhorse. I install more E100s in Weddington than any other single dehumidifier model across every neighborhood I work — probably 60% of Weddington dehumidifier installs are E100s. Not because it's the only right answer, but because the average Weddington crawl is 2,500-3,500 sq ft at 6-7 foot clearance, and the E100's nameplate 100 PPD rating de-rates to about 60-65 PPD at Weddington crawl operating temperature, which is exactly what you need to hold that footprint at 55% RH through a July with 76-degree dew points outside. Bigger crawls step up to the Santa Fe Ultra98 for its low-profile chassis or the AlorAir Sentinel HDi100 with its higher blower CFM. Smaller crawls, or the rare Weddington unit where the crawlspace is under 2,000 sq ft, step down to the E080 or E070. But E100s outnumber everything else and they earn their keep every summer.
Weddington dehumidifier scoping starts with actual cubic footage measurement, not tax record square footage. Tax records lie about crawl footprint constantly — sometimes they include, sometimes they exclude, sometimes they estimate wrong. I measure the perimeter with a laser distance meter, take clearance readings at four to six points across the footprint, and calculate cubic footage from the actual numbers. On a typical Weddington crawl that comes out to 15,000-30,000 cubic feet.
Then I read current conditions at three points — dry bulb temperature, RH, and dew point at each — to establish baseline moisture load. I check joist moisture content with a pin meter at six points, focused on shaded exposures where damage starts first. I evaluate existing insulation (almost always sagging fiberglass batts that need to come out), existing vapor barrier (almost always shredded 6-mil), and existing vent count and condition. And I look at the HVAC air handler platform because in Weddington the air handler is in the crawl and if the platform has rot, dehumidification alone won't stop the damage that's already in progress.
Electrical is the next check. Weddington custom homes built after about 2013 sometimes have a dedicated circuit stubbed in for a future dehumidifier — one of the smarter builders in the third wave started adding this to standard mechanical plans. Older Weddington homes (2004-2012 tract product) never have a dedicated circuit and we need to add one. That means an electrical permit through Union County, which we handle. Circuit is 120V 20A dedicated, GFCI-protected per NEC 210.8 for crawlspace locations, damp-location rated receptacle, no other loads sharing.
Model selection follows a straightforward matrix. Under 2,000 sq ft crawl at 6-7 foot clearance: Aprilaire E080 or E070. 2,000-3,500 sq ft: Aprilaire E100 default, Santa Fe Ultra98 if the clearance is under 5 feet, AlorAir HDi100 for owners who want wifi monitoring. 3,500-5,000 sq ft: Santa Fe Ultra98 or Santa Fe Advance 100 with ducted return capability to reach the far corners of the footprint. Over 5,000 sq ft (rare in Weddington, occasional on Marvin Ridge cul-de-sacs): dual E100s at opposite ends, or a single Santa Fe Impact XT commercial-class unit.
Hang location is deliberate. In Weddington crawls the air handler platform is usually near the geometric center of the crawl. I don't hang the dehumidifier close to the air handler because the two units interact — the dehumidifier's warm supply air can affect the air handler's return, and vibration coupling causes annoying resonances upstairs. Instead I hang the dehumidifier 15-20 feet from the air handler, oriented so the return pulls from the wettest zone (which is usually near an exterior wall on the shaded exposure) and the supply throws dry air back across the crawl toward the air handler platform.
Drainage in Weddington is roughly 50/50 between gravity discharge to daylight and condensate pump. Weddington's ridge lots often have enough grade drop from the crawl interior to a downhill exterior grade for gravity, but the block foundation walls are usually taller than the pump height most units can achieve, so we sometimes end up with a hybrid — condensate flows to a small collection basin inside the crawl and a Little Giant EC-1 pump lifts it up and over the wall to a gravity discharge outside.
Standard Weddington dehumidifier install spec:
Aprilaire E100 (100 PPD nameplate, ~60-65 PPD de-rated at 60°F crawl operating temp) — Default for 2,000-3,500 sq ft Weddington crawls. Five-year manufacturer parts warranty. US-made, quiet compressor, MERV-8 filter shipped standard (we upgrade to MERV-11). Runs on 120V 20A dedicated circuit.
Santa Fe Ultra98 (98 PPD nameplate) — Low-profile Therma-Stor unit for Weddington crawls with clearance under 5 feet, or as an alternate to E100 when the E100 is out of stock. Six-year manufacturer parts warranty, one-year labor. Steel cabinet, built like a tank.
Santa Fe Advance 100 (100 PPD nameplate) — Ducted-return-capable for larger Weddington crawls where the footprint spans more than the direct throw of a single supply grille. MERV-11 filter standard.
AlorAir Sentinel HDi100 (100 PPD nameplate) — Best price-to-performance mid-size for Weddington. Wifi monitoring, remote humidistat, five-year parts warranty. Head-to-head with the Aprilaire E100 on capacity, at slightly lower cost with wifi as the tradeoff feature.
Every install includes: vibration-isolating suspension straps rated for wet weight (150 lb), rigid PVC condensate line with proper slope, high-water safety switch that cuts the unit if condensate backs up, MERV-11 filter with a 3-6 month change schedule, humidistat setpoint locked at 55% RH, and remote monitoring where the model supports it. We register the manufacturer warranty in the homeowner's name at install so the coverage starts on install day, not on manufacture date.
Circuit is 120V 20A dedicated, GFCI-protected, damp-location rated receptacle. Union County electrical permit pulled through the Monroe office. We handle the permit and the inspection scheduling.
Drainage default is condensate pump to gravity discharge — Little Giant EC-1 pump lifting condensate 2-4 feet up to a foundation wall pass-through, then gravity to daylight outside. On lots with enough grade drop the pump can be skipped and we run gravity all the way, but Weddington's tall block foundations often make the hybrid setup the practical answer.
Yes — Weddington is a regular dehumidifier route. Free on-site inspection anywhere in Weddington, fixed written quote before we touch anything.
Weddington dehumidifier installs default to Aprilaire E100 or Santa Fe Ultra98 sizing on 2,500-4,500 sq ft footprints — noticeably larger units than the E070/E080 that dominate Cotswold and SouthPark 1960s ranch installs, because Weddington crawl cubic footage is roughly double the older neighborhoods.
28104, 28173. All Union County addresses covered.
Because it's the right size for the average Weddington crawl. Weddington footprints run 2,500-3,500 sq ft at 6-7 foot clearance — call it 15,000-25,000 cubic feet. Summer humidity load is high because the builders here left the crawls under-conditioned for a decade. The E100 nameplate rating of 100 PPD de-rates to about 60-65 PPD at 60°F crawl operating temperature, which is what you need to hold a Weddington crawl at 55% RH through a July with 76-degree outside dew points. Smaller units (E070, E080) get overwhelmed in a Weddington crawl by mid-July. Bigger units are overkill and burn more electricity than needed. E100 is the sweet spot for most of the town.
Yes, and about 30% of Weddington homes built after 2013 have this. Some of the smarter Weddington custom builders started adding a 120V 20A dedicated GFCI-protected circuit to the standard mechanical plan around 2013-2014, terminated at a receptacle inside the crawlspace on the center-of-house pier or wall. If your house has that, we tie the new dehumidifier directly to the existing circuit and no electrical permit is needed. Saves a couple days and a couple hundred dollars on the install. On the inspection I check for the receptacle before I scope the electrical.
The Aprilaire E100 and Santa Fe Ultra98 both run 52-58 decibels at three feet, which is quieter than a modern dishwasher and louder than a bathroom fan. Compressor cycle is the noise source, not the blower. Weddington crawls have big open volume and 6-7 foot clearance, which absorbs and diffuses the sound better than a tight low crawl in Cotswold. Vibration transmission through the joists is the real issue and we handle that with vibration-isolating suspension straps rather than bolting directly to structure. Done right, you'll hear a soft hum from the room above when it cycles — no rattling, no thumping.
Depends on the unit and the season. Aprilaire E100 in a properly encapsulated Weddington crawl running at 55% RH setpoint pulls roughly 7-8 amps at 120V when the compressor cycles. Compressor duty cycle in a sealed crawl is usually 30-40% in summer, 15-20% in winter. That works out to roughly 30-50 kWh per month in summer and 15-25 kWh per month in winter. At Duke Energy Union County residential rates, you're looking at a small addition to your monthly bill — the exact dollar amount changes with electricity rates but it's a fraction of what the humidity was costing you in HVAC runtime before the dehumidifier was installed. Ask about it on the inspection and I'll run the specific math for your setup.
Free on-site Weddington inspection. Fixed written quote. Call (980) 227-1769 or book below.