Short-Term Rentals in Austin: Keeping the Air Fresh Between Guests

Quick answer: Keep the AC at 78 to 80 degrees when the unit is empty instead of turning it off, and hold humidity at 50% or below. At every clean, run each drain and wash all fabrics. Change filters every 30 to 60 days, and book a whole-home air refresh between busy seasons.

Guests notice the air first

Read enough Austin rental reviews and you'll see the same words come up: "stuffy," "musty," "smelled like smoke," "a little funky when we walked in." A guest can forgive a slow coffee maker. A smell at check-in colors the whole stay, and it ends up in the review.

Short-term rentals have a special challenge. Many different people pass through, often with pets, perfume, takeout and wet swimsuits. Then the unit sits closed up between bookings. All of that adds to the home's bio-load, our name for the tiny particles and microbes that build up in a home's air, on its surfaces and inside its HVAC over time.

Why does an empty rental start to smell stale?

Humidity. The biggest mistake we see is turning the AC way up or off when nobody is booked. In Central Texas, that lets humidity climb fast. Warm, damp air settles into mattresses, couches, towels and carpet, and the unit greets the next guest with a heavy, stale smell.

Your AC does two jobs: it cools and it pulls moisture out of the air. When it barely runs, the second job stops too.

• Keep the thermostat around 78 to 80 degrees when the unit is empty in summer, not off.
• Aim for indoor humidity at 50% or below. A cheap hygrometer, or a smart thermostat that shows humidity, lets you check from home.
• Consider a whole-home dehumidifier if the unit runs humid even with the AC on. Gold Eagle Services installs them and can tell you if your system is sized right.
• Leave interior doors and closet doors open so air can move through the whole unit.

Our Central Texas humidity guide goes deeper on setpoints and fan settings.

What should cleaners add between guests?

A few air-focused steps on top of the usual clean:

• Air it out when the weather allows. Ten minutes of open windows on a mild day clears cooking and fragrance smells.
• Run bath and kitchen fans during cleaning.
• Wash everything fabric that guests touch: sheets, towels, throws, and pillow covers.
• Run water in every drain, including guest bath tubs that rarely get used. A dry P-trap is a classic cause of a sewer smell. See our drains and dry traps guide.
• Empty trash and wipe the fridge. Old food is a common surprise for the next guest.
• Skip heavy air fresheners. Plenty of guests dislike strong scents, and fragrance on top of an odor usually makes reviews worse, not better.

Filters: set a schedule and stick to it

Short-term rentals run the HVAC more than most homes, and guests don't change filters. A clogged filter moves less air, lets more dust through, and makes the unit feel stuffy.

• Change filters every 30 to 60 days during busy season, and monthly if you allow pets.
• Use a good pleated filter that fits snugly with no gaps around the edges.
• Keep spare filters on site in a locked owner's closet, with the size written on the shelf.
• Book a yearly HVAC tune-up that includes the coil and condensate drain line. A clogged drain line can back up and leak while no one is there to notice.

Pets, smoke and heavy use

A pet-friendly listing means more dander in the carpet, upholstery and ductwork. Our pet odors guide has tips that work well for rentals too.

If a guest smoked inside despite your rules, act fast. Wash hard surfaces, launder all fabrics, change the filter, and air out the unit before the next check-in. Smoke residue clings to ceilings and soft surfaces, so a quick wipe-down rarely does the job alone.

When should hosts book a whole-home refresh?

At the change of seasons: before the spring festival rush, before the summer peak, or after a busy fall. Daily cleaning handles the surfaces guests can see. It doesn't reach inside the ductwork, behind furniture, into closets or up near the ceiling. That's where a whole-home dry fog treatment helps, and it's the part of the job we can take off your plate.

Our treatment uses the patented Pure Maintenance VaPURE dry fog system in two steps:

1. A fine dry fog of a hydrogen peroxide and peracetic acid solution fills the home. The droplets are small enough to float through the air and reach every room and closet, plus the HVAC ductwork, without getting linens, electronics or furniture wet. The solution breaks down into water, oxygen and vinegar.
2. A surface protectant is then applied to help treated hard surfaces stay cleaner going forward.

The dry fog treatment is done in one day, so you only need to block one day on the calendar. It is a way to freshen the air and reduce the bio-load, not a fix for a leak. If you've had a leak, repair it first, and have an independent state-licensed professional look at any visible growth. We don't measure or analyze indoor air ourselves.

Quick host checklist

• Thermostat at 78 to 80 degrees when empty, never off in summer
• Humidity at 50% or below
• Filter changed every 30 to 60 days, spares on site
• Drains run at every clean
• Fabrics washed after every stay
• Yearly HVAC tune-up
• Whole-home refresh between busy seasons

Get a free phone consultation

Pure Maintenance Austin, brought to you by Gold Eagle Services, helps short-term rental hosts in all of Central Texas, out to College Station (about 2.5 hours), including Round Rock, Georgetown, San Marcos, Bastrop and Marble Falls. Book a free phone consultation: a Comfort Advisor calls you, learns about your rental and its HVAC system and sends a written quote based on square footage. Call 512-904-4646 or email IAQ@goldeagleservices.com. We're open Monday through Saturday, 7am to 7pm.