Heating and Air Conditioning Service in Mount Juliet, TN

Mount Juliet has grown fast, and a lot of those homes need a heating and air company they can trust. Donelson-Air LLC is a family-owned heating and air company based in Donelson, just down I-40. We've served Mount Juliet and the rest of the east Nashville area for about 25 years. Call or text 615-601-0591.

HVAC Service Across Mount Juliet

We work in homes and businesses throughout the 37122 area: near Providence and the Lebanon Road corridor, along Mt. Juliet Road and North Mt. Juliet Road, and in the subdivisions near Old Hickory Lake and Percy Priest Lake. Mount Juliet has many newer homes with heat pumps, high-efficiency furnaces and two-system setups for upstairs and downstairs. We also service the established neighborhoods closer to the older part of town, where equipment may be reaching the end of its life.

Heating Services in Mount Juliet

Furnace repair: gas and electric furnaces, igniters, flame sensors, blower motors and control boards
Heat pump repair: defrost problems, reversing valves, backup heat strips and systems that run nonstop in winter
New furnace and heat pump installation, properly sized for your home
Fall tune-ups to prevent breakdowns during cold snaps

Air Conditioning Services in Mount Juliet

AC repair: capacitors, contactors, fan motors, refrigerant leaks, frozen coils and drain clogs
Two-story comfort: solutions for hot upstairs bedrooms, including airflow balancing, duct improvements and zoning advice
New AC and heat pump installation for all major brands
Spring tune-ups to keep your system ready for summer

More Home Comfort Services

Tankless water heaters: endless hot water for busy households
Duct cleaning: especially helpful after new construction or renovations, when drywall dust ends up in the ducts
Insulation: attic insulation that helps your HVAC system keep up
Natural gas piping and leak detection: gas lines for ranges, fireplaces, outdoor kitchens and water heaters
Emergency HVAC service: after hours, weekends and holidays

Common HVAC Problems in Newer Mount Juliet Homes

Builder-grade systems in many newer homes work fine at first, but they can struggle over time. We often see:

Upstairs rooms several degrees warmer than downstairs
Construction dust clogging coils and filters
Undersized return air causing noisy, inefficient systems
Condensate drain clogs in attic air handlers that can leak through ceilings

We'll find the cause and suggest the simplest fix that actually works.

Why Mount Juliet Chooses Donelson-Air LLC

Family-owned and local: we're not a national chain
Licensed and insured
About 25 years of experience with Middle Tennessee homes
Honest, up-front pricing: you approve the cost before work begins
Rated 5.0 on Google

Financing, Warranty and Discounts

Financing from $199/month on new systems (subject to credit approval)
10-year parts warranty on new residential equipment when registered
10% off for police, fire and medical workers

Mount Juliet HVAC FAQs

Do you really come out to Mount Juliet from Donelson?

Yes. Mount Juliet is a short drive east on I-40, and it's a regular part of our service area.

Why is my upstairs so much hotter than downstairs?

Heat rises, and many two-story homes have limited return air or long duct runs upstairs. Balancing the dampers, improving returns, adding insulation or adding zoning can help. We'll look at your setup and recommend options.

Should I get a heat pump or a gas furnace?

Both work well here. Heat pumps are efficient for most of the winter, while a gas furnace gives strong heat during the coldest snaps. Many homes use a heat pump with gas backup. We'll help you compare.

Do you service Wilson County outside Mount Juliet?

Call us at 615-601-0591 and we'll let you know if we can reach your address.

Schedule Service in Mount Juliet

Call or text 615-601-0591 or schedule online.

Donelson-Air LLC: family-owned heating and air conditioning, based in Donelson, TN, serving the community for about 25 years. Licensed and insured.

Call or text: 615-601-0591 · Schedule online

Serving Donelson · Hermitage · Nashville · Mount Juliet · Old Hickory · Madison

Donelson Furnace Repair · Donelson AC Repair · Hermitage HVAC · Emergency HVAC · Donelson Cares