The HVAC savings calculator.
Choose your system size, your current efficiency, a new SEER2 rating, how much you cool and your electric rate. See annual savings, payback and a ten-year view. Free, with no signup.
- Annual savings
- Simple payback
- Free, no signup
What could efficiency save?
Planning math: cooling kWh = tons x 12,000 BTU x equivalent full-load hours / (SEER x 1,000). Old SEER is converted to the newer SEER2 scale. Your bills, weather, ducts and habits will differ.
- Cooling kWh, now
- Cooling kWh, new
- Simple payback
- Ten-year view
Saved. It will travel with your estimate request below.
Typical jobs, side by side.
Dollars for typical jobs. Bars show the low-to-high range.
Repairs, tune-ups and small jobs
Replacements and upgrades, installed
Commonly published planning ranges for typical homes. Real prices depend on equipment size and efficiency, access, ductwork, permits and the condition of the existing system. Each group of bars has its own scale.
Six things that change the number.
Your current efficiency
The older the system, the bigger the gap.
How much you cool
Heavy users save more per year.
Electric rate
Higher rates make efficiency pay back faster.
Duct condition
Leaky ducts waste savings from any system.
Sizing
Right-sized equipment runs more efficiently.
Thermostat habits
Schedules and settings affect real-world savings.
Savings questions
How much does a new air conditioner or furnace cost?
Commonly published installed prices run roughly $5,000 to $12,000 for a central air conditioner, $3,800 to $10,000 for a furnace and $5,000 to $13,000 for a heat pump, depending on size, efficiency and the work needed. Our Savings Calculator and System Sizer give a first view, and a free estimate gives you a written price.
What is a heat pump, and does it work in Tennessee winters?
A heat pump moves heat instead of making it, so it heats and cools very efficiently. Modern models heat well in Middle Tennessee winters, and a backup heat source or a gas furnace in a dual-fuel setup covers the coldest days.
How do I know whether to repair or replace my system?
Look at age, repair cost, repair history, energy bills and comfort. A common rule is to consider replacement when a repair costs about half of a new system, or when age times repair cost is above roughly 5,000. Our Repair or Replace tool gives a starting read.
Want a real number for your home?
A free estimate looks at your equipment and ducts and shows what an upgrade would cost and save.