Desert humidity often sits below 20 percent, and winter heating dries your indoor air even further. Here's what that does to your home and body — and whether a whole-home humidifier is worth it.
If your skin feels like paper all winter and you get zapped every time you touch a doorknob, your home's air is telling you something. Southern Utah's outdoor humidity often sits below 20 percent, and running your furnace through the winter dries the indoor air out even more. That bone-dry air isn't just uncomfortable — over a season it takes a real toll on your body and your home.
Just How Dry Our Air Gets
We live in a high desert, so low humidity is simply part of life here. But most people don't realize how far indoor air drops in winter. Heating cold outside air lowers its relative humidity even further, so the air circulating through your St. George home in January can be drier than the desert outside. For comparison, comfortable indoor air sits around 30 to 40 percent relative humidity — we routinely run well below that.
What Dry Air Does to Your Body
The effects show up fast. Dry, itchy skin and chapped lips are the obvious ones, along with the static shocks that snap at you all winter. But dry air also dries out the mucous membranes in your nose and throat, which leads to bloody noses and leaves you more vulnerable to colds and respiratory irritation. If your family seems to catch every bug that goes around each winter, parched indoor air is often part of the reason.
It's especially rough on anyone with asthma, allergies, or sensitive sinuses. When the air has no moisture in it, irritated airways don't get a chance to recover, and a dry cough or scratchy throat can hang on for weeks. Restoring even a little humidity often brings noticeable relief.
Your House Feels It Too
Dry air pulls moisture out of everything porous in your home. Hardwood floors shrink and gap, wood furniture and trim can crack, and doors and cabinets go out of alignment as the wood loses moisture. Musical instruments and artwork suffer as well. These aren't cheap things to fix, and the damage builds slowly enough that most people don't connect it to the air until something visibly splits.
The Problem With Portable Humidifiers
Plenty of homeowners try to solve this with a portable humidifier or two, and they'll help in a single room. But they only treat the space they sit in, they need refilling constantly, and they're a chore to keep clean — a neglected tank can grow mold and mildew and blow it right into the room. To actually raise the humidity of a whole home in our climate, you'd need one running in every room, refilled every day. It's a losing battle.
How a Whole-Home Humidifier Works
A whole-home humidifier installs directly into your HVAC system and adds moisture to the air as it circulates through the house. Because it ties into your existing ductwork, it treats every room evenly, draws water from your home's plumbing so there's no tank to refill, and runs quietly in the background. The best part is the humidistat: you set your target humidity once, and the system maintains it automatically all winter long.
The goal is that ideal 30 to 40 percent range — enough to keep your skin, your sinuses, and your hardwood comfortable, without adding so much moisture that you invite condensation. A properly sized and set system holds that balance on its own.
When to Call Marlin
If you're tired of dry skin, static, bloody noses, and cracking woodwork every winter, a whole-home humidifier is one of the best comfort upgrades you can make in our climate — and we can install one that integrates cleanly with your existing furnace and ductwork. Our techs will size it to your home and dial in the humidistat so it just works, all season, with nothing for you to refill or fuss over.
While we're at it, ask about pairing it with a smart thermostat. Together they give you hands-off control over both the temperature and the moisture in your home, which is exactly what a Southern Utah winter calls for. We've been keeping local homes comfortable since 1978, and we're glad to help you breathe easier.
Marlin Plumbing Heating & Air
Serving St. George, Utah since 1978