Your house feels sticky even when it's cool.
If the thermostat says 72°F but the air still feels damp, indoor humidity may be too high. A whole-home dehumidifier removes moisture without requiring additional cooling.
Does your house feel sticky even with the AC running? Or do you spend winter dealing with dry air and static shocks? North Texas weather can make indoor humidity difficult to manage. Your air conditioner removes some moisture, but it may not be enough during muggy weather. In winter, heated air can become uncomfortably dry.
CityLine Air Conditioning installs whole-home humidifiers and dehumidifiers to help maintain comfortable moisture levels. We'll check your indoor humidity and HVAC setup to recommend the right solution for your home.

Too much moisture can make a house uncomfortable even when the AC is working. Too little can bring its own problems during winter. Here's how to recognize both.
Your house feels sticky even when it's cool.
If the thermostat says 72°F but the air still feels damp, indoor humidity may be too high. A whole-home dehumidifier removes moisture without requiring additional cooling.
You keep lowering the thermostat to feel comfortable.
Excess humidity can make warm conditions feel more uncomfortable. Managing moisture separately may help you feel comfortable at a higher temperature instead of running the AC harder.
Humidity increased after your new AC installation.
An oversized air conditioner may cool the house quickly and shut off before removing enough moisture. Checking the system's operation comes first; additional dehumidification may help when appropriate.
Static shocks become common during winter.
If you keep getting little shocks from doorknobs, blankets, or furniture, dry indoor air could be contributing. A whole-home humidifier adds moisture to help maintain more comfortable humidity levels.
Wood floors or trim develop gaps in colder months.
Wood naturally expands and contracts as humidity changes. Excessively dry indoor air can make seasonal shrinking more noticeable. More consistent humidity may help reduce those fluctuations.
Your portable humidifier can't keep up.
Refilling a small water tank several times a day gets tiring, especially when multiple rooms feel dry. A properly sized whole-home humidifier can provide moisture throughout the areas served by your system.
Not sure humidity is the problem? If airborne dust is your main concern, explore air purification. For an unexplained indoor air concern, consider air quality testing. If certain rooms struggle to heat or cool, our ductwork services may be a better starting point.
No single price fits every house. The cost moves with the unit's capacity, how far it sits from the ductwork, and the water connection: a dehumidifier needs a drain or a condensate pump, and a humidifier needs a water line. Your technician prices each option in writing before installation, including the replacement pads or filters it will need.

A portable unit treats one room. A whole-home unit works through the ducts that already reach every room. Here's how the options line up.
| Option | What it does | What you should know |
|---|---|---|
| Whole-home dehumidifier | Pulls moisture from the air your ducts move, separately from cooling. | It must drain somewhere, by gravity or through a pump. ENERGY STAR suggests one for humid climates with central AC. |
| Portable dehumidifier | Dries a single room. | The bucket needs emptying unless it's drained, and capacity is rated in pints per day. |
| Whole-home humidifier | Adds moisture to heated air as it leaves the system. | It needs a water line, and its pad or filter needs replacing. |
| Portable humidifier | Adds moisture in one room. | Refilling and cleaning the tank are on you. |
| Your AC alone | Removes moisture while it's cooling. | On mild, muggy days it may not run long enough to keep up. |

Our team includes NATE-certified technicians with experience working on residential heating and cooling systems. Whole-home humidifiers and dehumidifiers need proper connections to existing equipment, and that experience matters when installing controls, drainage, and the components that keep everything working together.
Nobody wants to refill water tanks, empty buckets, or constantly adjust the thermostat. We'll help you choose a whole-home system that manages moisture with less daily attention. Before leaving, your technician will explain the controls, maintenance requirements, and what to expect during different seasons.
CityLine Air Conditioning handles heating, cooling, and indoor air quality equipment, so you have one company to contact if your humidity system needs attention later. Our Richardson-based team serves homeowners across DFW, with phone support available around the clock for scheduling and service requests.
A humidity meter costs little. Note morning and evening readings in the bedrooms and living areas. Also note which season the trouble shows up.
Your technician looks at the indoor unit, the nearby ductwork, and the drain or water connection, and takes iPad photos of what matters.
You'll see the size and type that fit, where each one would mount, and how the water is handled. Each option comes with its price.
After installation, the humidity control is set for the season. You'll know how to adjust it and when the pad or filter is due.
Book Now
No cooling or no heat? Call (972) 776-4455, day or night.
Tired of running a portable dehumidifier all summer or dealing with dry air every winter? A whole-home solution can make managing moisture much easier. Call or book online to arrange a visit. We'll help you explore installation options that suit your home.
Wondering what a whole-home humidifier or dehumidifier would involve? Ask about an installation estimate. We'll review the work required, explain the equipment options, and provide pricing before you make a decision.
Considering a larger indoor air quality upgrade? Our team can explain available HVAC financing options and whether your project qualifies. You'll have time to review the terms before committing to an installation.
Ready for better humidity control?
4.7stars on Google reviewsSticky summers or dry winters? Call (972) 776-4455 · Book Online
We install humidity equipment across the cities below, with every visit scheduled from our Richardson office. Summer mugginess and winter dryness reach every one of them, so the first question is which one you notice more. North Dallas service covers 75225, 75229, and 75230, and our Fort Worth service covers 76179.
Our Service Area
Don't see your street? Call (972) 776-4455 and ask.
The technicians were professional and very knowledgeable. We had our AC serviced, new Gas Furnace installed with air purifier, and also had our air ducts cleaned. I would go to CityLine first before any other company!
Kyle Cooper
The technician, Alberto, arrived on time, knew the equipment he was working on, was very professional, and was happy and very thorough.
Alann Nevarez
They contacted us in a timely manner, were on time for the service call and took care of the issues.
Jeffrey N.
Alberto Nevarez was great. Helped inform us of everything we needed to know plus extra. He went above and beyond to educate us as new home buyers of our systems and needed maintenance. 10 out of 10 would recommend
Tony A.
CityLine came to my home to check my unit for heating for this winter and were excellent. Technician Jay Jones was superb! He explained in detail everything he reviewed and gave me confidence in the service provided. 10/10! Would recommend to everyone!
Ryan F.
Travis came by to do a check up on the system. He's very courteous and friendly. All is well with the system.
Adrien C.




May 5, 2026You might not think much about dust. It gathers on shelves, settles on furniture, and seems like nothing more than a minor household annoyance.
May 4, 2026It’s 2:00 PM on a July afternoon in Dallas-Fort Worth. The thermostat reads 97°F outside, and you just realized your AC is not turning on.
May 4, 2026You’re sitting in your living room when your air conditioner kicks on and something sounds… wrong. Maybe it’s a metallic banging that wasn’t there last week.
It does, but only during cooling cycles. On mild, humid days the AC may barely run, and that's when a whole-home dehumidifier earns its place.
It isn't a simple DIY job. The unit connects to your ductwork, and its drain must reach a floor drain or pump, which ENERGY STAR assigns to an HVAC professional.
Around 30 to 40% on cold nights. ENERGY STAR suggests that range during heating season to keep condensation off the windows.
Some DFW homes need both at different times: a dehumidifier for muggy summers and a humidifier for dry winters. Humidity meter readings in each season show which.
Yes. Most makers call for a new water pad or filter each season, and the water line should be checked. Your technician shows you how when it's installed.
Office hours 8 AM to 6 PM, with phones answered around the clock.