Frequently asked questions
Straight answers to the questions we hear most. If yours isn't here, call — it's faster than email.
Do you only work on Carrier equipment?
No. We install Carrier, but we repair and maintain every make. Our technicians are trained on all major brands and carry the diagnostic equipment to find the actual fault, not just the obvious one.
What areas do you serve?
We're based in Jonesboro and work within about a 40-mile radius of the shop: Brookland, Paragould, Trumann, Bono, Bay, Lake City, Harrisburg, Walnut Ridge, Hoxie, Monette, Piggott, Marked Tree, Manila, Leachville, Caraway, Lepanto, Marmaduke, Rector, Pocahontas, Newport, Wynne, Blytheville and Osceola, plus the smaller communities between them. We've also taken select projects farther afield. If you're nearby, call and ask.
Do you offer after-hours or emergency service?
Our office is open Monday through Friday, 7:30 to 4:30, and after-hours service is available when something can't wait until the next business day. Either way it's the same number — it's been the same one since 2005.
How do you decide what size system a house needs?
We run a Manual J load calculation on the actual structure — square footage, glass, orientation, insulation and air leakage — rather than matching the old unit or guessing from a sales sheet. Most homes in Northeast Arkansas have equipment a size or two too large, and oversized means humid, loud and short-lived.
Should I repair my system or replace it?
It depends on the age of the equipment, what's failing, and what it costs to fix against what a new system would save. If a repair doesn't make sense, we'll tell you that. We don't sell a replacement you don't need.
Do you offer maintenance agreements?
Yes, for homes and for commercial buildings. Annual maintenance is the least glamorous thing we do and the thing that most reliably keeps customers off the emergency schedule when the weather turns. A visit includes coil cleaning, refrigerant charge verification, electrical and safety checks, and a written report.
Do you install geothermal and VRF systems?
Yes. Geothermal loop fields, ground-source heat pumps and in-floor radiant heat for new construction and retrofits; Toshiba-Carrier VRF and ductless mini-splits for large homes, offices and commercial buildings. Both are design work — we walk the property, run the numbers, and tell you whether it makes sense.
Do you do commercial work?
Yes. Churches, schools, nursing homes, offices, retail and industrial buildings across Northeast Arkansas — rooftop units, VRF, geothermal, and maintenance agreements sized to the building. Most commercial jobs are scheduled around your hours, not ours.
Is financing available?
Yes, with approved credit, through Wells Fargo (the Carrier credit card) and FTL Finance. Applications and current promotions are on our financing page, or ask when we review your proposal.
How often should I change my filter, and which one?
It depends on the filter and the house, which is why we set up a subscription: tell us your system once, choose how often filters arrive, and the right one shows up at your door. We recommend the 3-inch return-air filter — in most homes it fits the existing grille, filters better, lasts longer, and lowers static pressure on the blower.
Do you do plumbing or electrical work?
No. Nightingale Mechanical does heating and air only. Our father's original shop did plumbing and electrical too, but when the family opened in Jonesboro in 2005 we chose to do one thing well.
Are you licensed and insured?
Yes. Nightingale Mechanical LLC is licensed and insured, a Carrier Factory Authorized Dealer, and a three-time Carrier President's Award winner (2022, 2023 and 2024).
Still have a question?
Whether it's a system that isn't performing, a renovation, or a new build, the first conversation is with someone who can make a decision.