D and S Air LLC.

02/21/2026

01/27/2026

When heating systems kick on, airflow increases and moisture shifts. That buildup sitting on coils, in drain pans, and on hard surfaces doesn’t disappear, it gets activated. Odors become more noticeable, and indoor air quality issues that stayed hidden in warmer months suddenly make themselves known. Winter doesn’t create these problems. It amplifies them.

More cold-weather hot takes coming as we continue breaking down what really happens inside HVAC systems when temperatures drop. ❄️ 🔥

01/16/2026

❄️ It's cold outside which means your HVAC system is working overtime 🔥

While you are cranking up the heat, your HVAC system is battling bacteria and mold buildup. That's why smart maintenance matters year-round. A clean and disinfected system works more efficiently, smells better, and is ready for whatever winter throws its way. Now is the perfect time for a D7 disinfectant treatment. Learn more here: https://www.youtube.com/watch?v=WagQ_rJ0A8U

01/14/2026

This product is absolutely AMAZING!!!! We use it in our home all the time! It can last up to 6 months! Great for the HVAC system which is essentially the lungs of your home! Think about all the junk that your system pulls in from outside!!! Call us today for more information or visit www.dandsair.com

🧪 When it comes to disinfection, the details matter 🦠

At Decon7, we focus on what's often overlooked. The chemistry. The contact points. The hard surfaces inside systems that quietly collect buildup over time. D7 was developed with one goal in mind: proven efficacy where it actually counts. Because real results don't come from shortcuts. They come from science.

11/27/2025

Wishing everyone a wonderful and Happy Thanksgiving!!!

11/24/2025

Have us install a new smart thermostat for you! Free estimates! Call today!

Get an ecobee Smart Thermostat in the TEP Marketplace.

11/21/2025

TUCSON!!!! We are hiring! Come join our amazing team! Looking for an install technician!

11/21/2025

Hey Tucson! We are looking for an install technician to join our amazing HVAC team! Call us at (520) 743-3633 or send inquiries and resumes to: [email protected]

11/20/2025

HEY TUCSON! We are now hiring! Looking for an install technician! Come join our awesome team!