FAQ
At One Stop, we know that home repairs in the Midlands can be a bit of a headache—whether it's the Columbia humidity or Lexington’s hard water. We’ve rounded up the most common questions our neighbors ask to help you keep your home running smoothly.
Heating & Air Conditioning (HVAC)
When should I replace my HVAC system instead of repairing it?
Direct Answer: If your system is over 10–12 years old and the repair cost is more than 50% of the value of a new unit, it is usually time to replace it. We follow the "Rule of $5,000": Multiply the age of the unit by the repair cost. If the total is more than $5,000, a new, energy-efficient system will likely save you more money in the long run through lower utility bills and fewer "emergency" visits.
Why is my AC running but not blowing cold air?
Direct Answer: This is usually caused by a clogged air filter, a tripped breaker, or a frozen evaporator coil. First, check your filter—if it's gray and fuzzy, replace it! If that’s not it, check your outdoor unit for debris. Honesty Check: If you see ice on the lines, turn the system off immediately and call us. Running a "frozen" unit can burn out your compressor, which is a much more expensive fix than a simple refrigerant recharge or leak repair.
How often should I service my AC unit in the Midlands?
ou should have your HVAC system professionally serviced twice a year—once in the Spring before the heat hits, and once in the Fall before the first freeze. Because our South Carolina summers are so long and humid, your system works harder than it would in other states. Regular "tune-ups" prevent mid-July breakdowns and can lower your monthly electric bill by keeping the coils clean.
Plumbing & Water Quality
What should I do if a pipe bursts or I have a major leak?
Direct Answer: Immediately turn off your home's main water shut-off valve and call a licensed plumber. Most homes in our area have a shut-off valve near the street or where the main line enters the house. We recommend every homeowner find this valve before an emergency happens! If you can't find yours, give us a call and we’ll help you locate it during our next visit.
Why does my water heater make a "popping" or "rumbling" sound?
Direct Answer: This sound is typically caused by sediment buildup at the bottom of the tank "boiling" as the burner heats the water. Think of it like a pot of grits on the stove—the air bubbles have to fight through the sediment to escape. In our region, this is very common due to mineral deposits. A professional "flush and fill" usually solves the noise and helps your heater run more efficiently.
Is the water in the Columbia/Midlands area "hard"?
Direct Answer: Yes, much of the Midlands has moderate to high mineral content, which can lead to "hard water" buildup in your pipes and appliances. If you notice white crusty buildup on your showerhead or spots on your "clean" dishes, that’s hard water. Over time, these minerals can "clog the arteries" of your plumbing. We often recommend whole-home water softeners to protect your dishwasher, laundry machine, and water heater from early failure.
Brands & Equipment
Do you offer "Eco-Friendly" or Tankless options?
Direct Answer: Yes, we specialize in high-efficiency SEER2-rated HVAC systems and tankless water heaters (like Rinnai or Navien). Tankless water heaters are a great choice for larger families in Lexington and Irmo because they provide "endless" hot water and take up much less space. While they have a higher upfront cost, they last twice as long as traditional tanks.
What HVAC and Plumbing brands do you work on?
Direct Answer: We service and repair all major brands, including Trane, Carrier, Lennox, Rheem, and Goodman. While we have our favorites for new installations based on reliability and part availability in the Midlands (like Trane and Rheem), our technicians are trained to handle whatever system is currently in your home. We believe in "fixing it right" regardless of the logo on the box.
Trust & Transparency
What if I’m not happy with the service?
Direct Answer: We stand by our work with a 100% Satisfaction Guarantee. We’re a local business, and our reputation is everything. If something isn't right, let us know immediately. We’ll come back out and make it right at no extra charge to you.
Why do your quotes sometimes differ from "over-the-phone" estimates?
Direct Answer: We provide firm, upfront pricing only after a physical inspection to ensure we aren't charging you for parts you don't need. Every home in the Midlands is built differently. A "simple" leak might be a loose fitting, or it might be a cracked pipe behind a wall. To be honest and transparent, we prefer to see the problem in person so we can give you a "No-Surprises" price that won't change halfway through the job.
Modern Comfort & Air Quality
What is "Indoor Air Quality" (IAQ), and do I really need an air purifier?
Direct Answer: Indoor Air Quality refers to the amount of dust, allergens, and pollutants in your home's air; an air purifier is highly recommended for those with allergies, pets, or asthma.
Modern homes are built to be airtight, which is great for your electric bill but bad for fresh air. We offer HEPA filtration and UV light systems that kill bacteria and mold spores inside your HVAC unit before they ever reach your living room. It’s essentially a "health upgrade" for your house.
How can I reduce humidity inside my home during a Columbia summer?
Direct Answer: To lower indoor humidity, you should ensure your HVAC system is properly sized, use a whole-home dehumidifier, and keep your "Fan" setting on "Auto" rather than "On."
In the Midlands, outdoor humidity often stays above 70%. If your AC is too large (oversized), it will cool the air quickly but won't run long enough to pull the moisture out, leaving your home feeling "clammy."
Troubleshooting & "Before You Call"
What does the new "SEER2" rating mean for my new AC purchase?
irect Answer: SEER2 is the updated 2023-2026 federal standard for measuring energy efficiency; a higher SEER2 rating means the unit uses less electricity to cool your home.
If you’re comparing a new system to one you bought 15 years ago, even a "base model" today is significantly more efficient. Moving from an old SEER 10 unit to a new SEER2 16 unit can often cut your cooling costs by 30% or more.
Why is my AC thermostat screen blank?
Direct Answer: A blank thermostat usually means a loss of power, often caused by a tripped circuit breaker, dead batteries, or a clogged "float switch" that has shut the system down to prevent a flood.
Before you call for a repair, check your electrical panel for a tripped breaker and replace the batteries in the thermostat unit. Transparency Tip: If your drain line is clogged, the safety "float switch" will cut power to the thermostat to keep the AC from leaking water into your ceiling. If the batteries don't work, give us a call to clear that line!
Plumbing & Kitchen/Bath
How do I know if my main water line is leaking underground?
Direct Answer: Common signs of a main line leak include an unexplained jump in your water bill, a "spongy" or unusually green patch in your yard, or a drop in water pressure throughout the house.
In areas like Lexington or Chapin, shifting clay soil can put stress on underground pipes. If you suspect a leak, turn off all water inside the house and check your water meter; if the little dial is still spinning, water is escaping somewhere between the street and your front door.
Why do my drains smell like "rotten eggs"?
Direct Answer: This smell is usually caused by bacteria buildup in the "P-trap" or a dried-out floor drain that is allowing sewer gases to enter your home.
If it’s a guest bathroom you rarely use, try running the water for a minute to refill the trap. If the smell persists in a frequently used sink, you likely have a clog of hair and organic matter that needs a professional cleaning. Avoid harsh chemical cleaners, as they can eat away at older pipes in Midlands homes!