Source: https://oncallsc.com/blog

 # Plumbing & HVAC advice from Midlands technicians

Straight answers from the licensed plumbers and NATE-certified HVAC technicians who fix these problems every day in Columbia homes. Need hands-on help? Call (803) 781-4357.



[Call (803) 781-4357](tel:+18037814357)[Request Service Online ](https://oncallsc.com/contact-us.md)

 

 

## [How to Fix Dirty Sock Syndrome in Your HVAC System](https://oncallsc.com/articles/how-to-fix-dirty-sock-syndrome-in-your-hvac-system.md)

Musty smell every time your heat pump or AC kicks on? It's called dirty sock syndrome. Here's what causes it and how to get rid of it for good.

## [HVAC Changes Columbia Homeowners Should Know in 2026](https://oncallsc.com/articles/2026-hvac-industry-trends.md)

Refrigerant rules, the end of the federal heat pump tax credit, local rebates that still exist and newer equipment options — what's changed for Midlands homeowners in 2026.

## [How to Choose the Best AC Unit Repair Service In 2026](https://oncallsc.com/articles/how-to-choose-the-best-ac-unit-repair-service-2026.md)

A practical checklist for comparing AC repair companies, verifying South Carolina credentials, understanding diagnostic fees, and getting a clear written repair proposal.

## [Repairing Your Home AC Unit: DIY vs. Professional Services](https://oncallsc.com/articles/repairing-your-home-ac-unit-diy-vs-professional-services.md)

Learn which basic AC checks are appropriate for homeowners, which repairs require a qualified technician, and how to respond safely to ice, water, electrical hazards, and loss of cooling.

## [Trane vs. Lennox: Which HVAC Brand Is Better in 2026?](https://oncallsc.com/articles/trane-vs-lennox-which-is-better-in-2026-2.md)

A practical comparison of Trane and Lennox that helps homeowners evaluate matched systems, installation quality, controls, warranties, refrigerants, and written bids without relying on unsupported brand rankings.

## [AC Troubleshooting: 4 Safe Checks Before You Call a Pro](https://oncallsc.com/articles/how-to-repair-an-ac-unit-a-comprehensive-guide.md)

Four safe checks you can make when your AC stops cooling, the warning signs that need immediate action, and what to leave to a professional.

## [Trane vs. Daikin: Which HVAC Brand Is Better in 2026?](https://oncallsc.com/articles/trane-vs-daikin-which-is-better-in-2026.md)

A customer-first comparison of Trane and Daikin systems focused on exact equipment matches, R-32 and R-454B product differences, installation, controls, warranties, and bid evaluation.

## [Trane vs. Carrier: Which HVAC Brand Is Better in 2026?](https://oncallsc.com/articles/trane-vs-carrier-which-is-better-in-2026.md)

A fact-focused guide to comparing Trane and Carrier proposals by certified efficiency, capacity control, thermostats, installation scope, refrigerant, and model-specific warranty terms.

## [What Is a SEER2 Rating? Definition, Examples, and a Homeowner’s Guide](https://oncallsc.com/articles/what-is-seer-rating-definition-examples-guide.md)

A plain-language guide to SEER2, EER2, and HSPF2, including South Carolina minimums, matched-system certification, practical bid comparisons, and the limits of efficiency ratings.