Your HVAC system works round the year to maintain your building’s comfort level. HVAC systems, just like household appliances, can develop problems. Timely HVAC repairs in Flowery Branch and regular maintenance is the key to getting the most out of an HVAC system. Your HVAC system, however, is not designed to last forever. An HVAC system lasts 15-20 years. If your HVAC is too old or beyond repair, consider getting it replaced. When thinking about getting their old HVAC replaced, one of the first questions that comes to a homeowner’s mind is how much should they expect to spend? We try to answer this question.

HVAC Replacement Cost

Most homeowners in the country spend $4,820-$9,350 to get their HVAC replaced. Homeowners who want to get ductwork installed with their HVAC system pay between $6,820 and $12,350. Your actual cost will depend on the size of your home, labor expenses, the length of your ductwork, and your HVAC’s brand and efficiency rating. If you plan to opt for upgrades such as an air cleaner, zoning system, or humidifier, expect to pay an extra $2,000-$4,000 or more.

HVAC Installation with Add-Ons

If you want to get an HVAC system installed with additional features, expect to spend between $13,000 and $17,000. Getting a zoning system installed will cost you an extra $2,300 to $3,500. Other upgrades include a humidifier, UV lighting, or variable speed fan.

HVAC Unit Costs

A standard HVAC unit for a 1,000 sq. ft. home costs about $1,900. An HVAC system designed to heat and cools a 3,000sq.ft. home costs about $5,600. Your actual cost will depend on the size of your home and the brand and efficiency rating of your HVAC.

Ductwork Replacement Cost

Expect to pay $35-$55 per linear foot for new ductwork installation. A typical single-family home needs 30-90 linear feet of ducting. Expect to pay between $2,000 and $3,000 to get your old (< 15 years old) ductwork replaced with new, R-6 insulated, Mylar sheathed ductwork.

Furnace and Air Conditioner Replacement Cost

If the cost of repairing your old unit comes to around 30 percent of the cost of a new system, consider opting for a new unit. Expect to pay $4,820-$9,350 on furnace and air conditioner replacement. Your actual cost will depend on your contractor’s fee and the brand and the SEER rating of the new unit.

AC Replacement Cost

Want to get an existing forced furnace retrofitted with an AC unit? Expect to pay $3,350-$5,910. A new AC will cost you anywhere between $1,080 and $1,740.

Furnace Replacement Cost

The average cost of furnace replacement is $2,150-$5,900. Most homeowners pay around $3,100. Before opting for a new unit, ask your HVAC service provider in Flowery Branch to check whether your existing ductwork can hold up to the new installation.

Some Factors to Consider When Calculating HVAC Installation Cost

  • The amount of work involved
  • The brand and grade of each component
  • Whether the project involves ductwork installation
  • Your home’s construction quality
  • The length of your ductwork
  • Permit costs


With proper maintenance, an HVAC system can last 15-20 years.

Consider replacing your HVAC if:

  • It is nearing the end of its service life
  • It is <10 years old, and the estimated repair cost is more than 30 percent of the cost of a new unit
  • It circulates stale and impure air laden with dust and allergens
  • It is unable to maintain a comfortable temperature
  • Your energy bills are constantly rising

$85-$175 (for round branch ducts) and between $150 and $325 for rectangular dampers.

Load More

Looking for a trustworthy HVAC expert? Look no further than Central Heating & Air Conditioning. We offer top-notch HVAC repair services in Flowery Branch. We are committed to helping our community members get the most out of their HVAC systems. To talk to one of our experts, call us at (404) 261 – 2280.