Carney & Son 72 Degrees Air Conditioning & Heating FAQ’s

Call us today to get answers from experienced experts in Charleston and Johns Island to all your HVAC questions!

At Carney & Sun 72 Degrees, we’re proud to be a part of the community and are dedicated to offering the best customer service in the Greater Charleston area. That includes answering all your questions! Here are some of the most common heating-and-cooling-related questions we get from customers:

Like most machines, your HVAC unit will need professional upkeep every now and again. We recommend scheduling HVAC maintenance at least once or twice a year or joining our maintenance club to keep your system in peak condition. However, additional service might be necessary if you have an older unit.
How often your HVAC filter will need to be replaced depends on what kind of air filter you’re using. Average fiberglass filters need to be replaced every 30 days, while heavy-duty pleated filters may last up to six months. You may need to replace your filter more frequently if you have pets, live in a dusty area, or your system sees heavy use.
Dust may settle in your furnace during the summer months. When you turn on your heater for the first time, the dust burns and emits an unusual smell. Scheduling professional furnace cleaning and filter replacement services before the winter season is the best way to avoid this odor while ensuring the reliability of your unit.
Furnace filters use the MERV (minimum efficiency reporting value) rating system, which ranges from one to sixteen. The higher the rating, the more contaminants the filter can remove from the air. Filters rated between 1-4 will remove larger particulates, like dust and carpet fibers. Filters rated 5-8 will remove pet dander, pollen, and mold spores, while those rated 9-12 remove smoke, smog, and microscopic allergens. Filters rated above 12 are considered hospital-grade and will remove bacteria, viruses, and more. Most household filters fall somewhere between 6-12.
While explosions are more likely with a gas furnace, yes, it is possible for a furnace to catch fire, explode, or both. Gas leaks, electrical shorts, and dust build-up are common causes of furnace fires—which is one of many reasons regular maintenance is vital.
The right AC type for your home will depend on your personal preferences. Ductless mini-splits are energy efficient and provide room-by-room temperature control. However, they are much more expensive to install. Central air conditioners are less expensive to install and provide superior air filtration but require more frequent maintenance.
Yes! Our team is on call 24 hours a day. We offer emergency heating and cooling repairs everywhere in the Greater Charleston area.

If you still have questions or want to schedule an appointment, feel free to give us a call at 843-762-4304. At Carney & Sun 72 Degrees, we are always here for you.