End sticky summer humidity, prevent mold growth, and improve comfort with professional whole-home dehumidification. We install and service standalone and HVAC-integrated dehumidifiers that work independently of your AC.
Texas summers aren't just hot — they're oppressively humid. DFW's summer indoor humidity regularly climbs to 60-80%, well above the healthy 40-50% range recommended by HVAC experts and medical professionals. This excessive humidity creates the perfect environment for mold growth, dust mite infestations, and bacterial proliferation. It makes your home feel warmer than it actually is, forcing you to lower the AC and waste energy trying to achieve comfort you can't reach through temperature alone. High humidity also damages wood furniture, causes musty odors, ruins stored items, and makes breathing feel heavy and uncomfortable.
Your air conditioner removes some humidity as a byproduct of cooling, but it's not designed for humidity control — it's designed for temperature control. When spring and fall bring humid weather without extreme heat, your AC may not run enough to control moisture. Even in summer, overcooled homes can have high humidity if the AC is oversized or short-cycling. The result: you're cold but still feeling clammy and uncomfortable. Whole-house dehumidifiers solve this problem by removing moisture independently of temperature, giving you precise humidity control year-round without overcooling your home.
LEX has installed whole-house dehumidifiers in DFW homes since 2004, helping families eliminate mold problems, reduce allergy symptoms, and achieve true comfort regardless of outdoor humidity. We install systems from Aprilaire, Honeywell, Santa Fe, and Ultra-Aire — the industry's most reliable dehumidifier brands. Our licensed HVAC technicians properly size your dehumidifier based on your home's square footage, moisture load, and climate conditions. Installation typically completes in 3-5 hours, and we handle all ductwork integration, drainage, and control setup. You'll notice the difference immediately as sticky, heavy air becomes fresh and comfortable.
Choose the right system for your home's size, humidity issues, and HVAC setup.
Install directly in your HVAC ductwork and work with your existing system. When humidity rises above your set point (typically 50%), the dehumidifier activates and conditions air flowing through your ducts. Best for homes with existing ductwork, moderate humidity issues (55-65%), and desire for invisible integration. More affordable than standalone units.
The most powerful solution. Independent units that don't rely on your HVAC system — they run when needed regardless of AC operation. Perfect for severe humidity problems (65-80%), spring/fall humidity when AC isn't running, or homes with inadequate AC dehumidification. Can remove 90-150 pints per day. Ideal for finished basements, tight construction, and year-round humidity control.
Dual-function systems that remove humidity AND bring fresh outdoor air inside (when outdoor conditions are favorable). They exhaust stale indoor air while conditioning incoming fresh air. Best for tight, energy-efficient homes that need both humidity control and ventilation. More expensive but solve two problems in one system — fresh air and moisture control.
Maintaining healthy 40-50% indoor humidity during Texas summers prevents serious health and home damage issues that many homeowners don't realize humidity is causing.
Mold requires 60%+ humidity to grow. Keeping humidity at 50% or below starves mold of the moisture it needs, preventing growth in bathrooms, closets, attics, and HVAC systems. This eliminates musty odors, prevents mold-related allergies and respiratory issues, and protects your home's structure and stored items from mold damage.
Dust mites thrive in humidity above 50%. They're the #1 indoor allergen, causing year-round allergy symptoms for millions of Texans. Proper dehumidification reduces dust mite populations by 50-80%, dramatically improving symptoms for allergy and asthma sufferers without harsh chemicals or expensive mattress encasements.
Humid air feels warmer than dry air at the same temperature — that's why 85°F at 70% humidity feels worse than 85°F at 40% humidity. Proper dehumidification allows you to raise your thermostat 3-4 degrees while feeling just as comfortable, reducing cooling costs by 15-25% during Texas summers. You achieve comfort through humidity control, not just temperature.
High humidity causes wood swelling, furniture joint loosening, leather mildew, fabric deterioration, and rust on metal items. It ruins stored clothing, books, photos, and electronics in closets and storage areas. Whole-house dehumidification protects your investments and prevents the musty smell that permeates humid homes.
Breathing humid air feels heavy and labored. High humidity aggravates asthma, COPD, and other respiratory conditions. It increases airborne bacteria and virus survival rates, contributing to illness transmission. Proper dehumidification makes breathing easier, reduces respiratory symptoms, and creates a healthier indoor environment.
High humidity disrupts sleep by making you feel hot, sweaty, and uncomfortable even with AC running. It creates the clammy feeling that makes sheets stick to skin and pillows feel damp. Proper humidity (40-50%) allows your body to cool naturally through perspiration evaporation, resulting in deeper, more restful sleep without nighttime discomfort.
Understanding your dehumidifier's operation helps you get the best performance and maintain it properly. Here's how whole-home systems remove moisture:
HVAC-Integrated: Uses your HVAC blower to circulate air through the dehumidifier when humidity is high. Standalone: Has its own fan system that pulls humid air from one location (often a central return or utility room) and returns dry air to your home through ductwork. Standalone units operate independently — they run when needed regardless of whether your AC or heat is running.
Humid air passes over cold evaporator coils (similar to how your AC works). As warm, humid air contacts the cold coils, moisture condenses into water droplets that collect in a pan or drip tray. The dehumidifier can remove 50-150 pints of water per day depending on the model and humidity levels — that's 6-18 gallons of moisture extracted from your home's air daily during humid weather.
After moisture is removed, the now-dry air passes over warm condenser coils that reheat it slightly before returning it to your home. This prevents the "cold, clammy" feeling portable dehumidifiers create. The reheated, dry air circulates throughout your house via ductwork, lowering humidity levels in every room. The process is continuous and automatic based on your humidistat setting.
Condensate water drains automatically — no emptying buckets. We install drain lines that route water to your home's plumbing drain, a floor drain, or outside drainage. Some systems include condensate pumps for situations where gravity drainage isn't possible. Once installed, you never think about drainage — the system handles it automatically, operating continuously without manual intervention.
Recognize these symptoms of high indoor humidity?
The most obvious sign of humidity problems. Musty smells indicate active mold growth somewhere in your home — often in bathrooms, closets, HVAC systems, or crawl spaces. Visible mold on walls, ceilings, grout, or window frames means your humidity is consistently above 60%. A dehumidifier eliminates the moisture mold needs to survive.
Water droplets or fog on windows during summer months (especially in bathrooms or humid rooms) indicate indoor humidity is too high. This is the same moisture that's promoting mold growth in hidden areas, damaging stored items, and making your home uncomfortable.
If your AC is running but your home still feels humid, sticky, or uncomfortable — especially during spring/fall or in specific humid rooms — your HVAC system isn't adequately controlling moisture. You're overcooling trying to feel comfortable, wasting energy without achieving the comfort you want.
Year-round allergy symptoms that improve when you leave home indicate high levels of dust mites or mold spores — both thrive in high humidity. If you're constantly dealing with congestion, sneezing, or respiratory irritation at home, excess humidity is likely feeding the problem.
Finding mildew on shoes, belts, clothing, or furniture in closets and storage areas? That's high humidity creating perfect conditions for mildew growth on organic materials. Whole-house dehumidification prevents this damage by keeping moisture levels below mildew's growth threshold.
If you've measured indoor humidity and it's consistently above 55-60% during summer or humid weather, you need better moisture control. Ideal indoor humidity is 40-50% year-round. Levels above 60% promote mold growth, dust mites, and discomfort regardless of temperature.
Many homeowners ask: "Why do I need a dehumidifier if my AC removes humidity?" Here's why AC alone often isn't enough for Texas humidity:
Bottom line: AC and dehumidifiers work together. Your AC handles temperature, the dehumidifier handles moisture. Together, they deliver the comfort your AC alone can't achieve — especially during Texas's humid spring, fall, and summer months.
"We were constantly battling mold in our bathrooms and that musty smell in our closets despite running the AC full blast. LEX installed an Aprilaire whole-house dehumidifier last April and the difference is night and day. No more mold, no more musty smell, and our house actually feels comfortable at 74°F instead of 68°F. We're saving money on electric bills and finally solved the humidity problem that our AC couldn't handle."
Whole-house dehumidifier installations typically range from $1,800-$3,500 depending on the type and complexity. HVAC-integrated systems (most economical) run $1,800-$2,400 installed. Standalone whole-home dehumidifiers (most powerful) cost $2,500-$3,500. Ventilating dehumidifiers (premium dual-function) range from $3,000-$3,500. This includes the unit, professional installation, ductwork integration, drainage setup, humidistat, and warranty. We provide free assessments and financing for qualifying customers.
Most whole-house dehumidifier installations complete in 3-5 hours. HVAC-integrated systems are fastest (3-4 hours). Standalone systems with separate ductwork take 4-5 hours. We install the unit, integrate with your ductwork or create dedicated ductwork, set up automatic drainage, install the humidistat, test the system thoroughly, and show you how everything works. Installation is clean and professional — you'll have automatic dehumidification working the same day.
For optimal comfort and health in Texas, maintain 45-50% relative humidity during humid months. This range prevents mold growth (which requires 60%+ humidity), controls dust mites, and provides comfortable air quality. The humidistat automatically maintains your target humidity. During winter when you're heating, humidity naturally drops — that's when a humidifier becomes beneficial. Summer and humid spring/fall weather is when dehumidifiers work hardest.
Minimal maintenance is required. Clean or replace the air filter every 3-6 months (similar to your HVAC filter). Check drainage annually to ensure condensate is flowing freely. Have the coils professionally cleaned during annual HVAC maintenance if needed. That's it — no emptying buckets, no daily maintenance. The system operates automatically and drains automatically, requiring less attention than portable dehumidifiers that need daily emptying.
Yes. Whole-house dehumidifiers work with any HVAC system — gas furnaces, heat pumps, air handlers, or ductless systems with ducted air handlers. Standalone dehumidifiers are especially ideal for heat pumps since they operate independently of your HVAC equipment. We'll assess your specific system during your free consultation and recommend the best dehumidifier type for your setup.
Most whole-house dehumidifiers use 600-800 watts when running — similar to a window AC unit or space heater. They don't run constantly — only when humidity exceeds your set point. In DFW, expect 4-8 hours of daily runtime during humid summer months, less during drier periods. Operating cost is typically $30-60/month during peak humidity season. However, this is offset by energy savings from raising your thermostat 3-4°F while maintaining comfort, which reduces AC costs 15-25%.
We don't recommend DIY installation. Whole-house dehumidifiers require ductwork modification, electrical connections (220V for many models), drainage installation, proper sizing for your home's moisture load, and integration with HVAC controls. Improper installation can cause condensate leaks, inadequate dehumidification, mold growth in ductwork, or system damage. Professional installation ensures your dehumidifier works correctly, efficiently, and safely with proper warranty coverage.
Aprilaire makes HVAC-integrated dehumidifiers that work with your existing system — excellent for moderate humidity control and more affordable. Santa Fe and Ultra-Aire specialize in high-capacity standalone systems with 90-150 pint/day capacity — ideal for severe humidity problems, basements, or homes needing independent moisture control. All three brands offer excellent reliability. We'll recommend the best fit for your home's specific humidity issues, budget, and HVAC setup during your consultation.
Call LEX today for a free humidity assessment and whole-house dehumidifier quote. We'll help you choose the right system and have it installed and running the same day.
