How much does a new central AC cost?
A central AC replacement with us runs $5,200–$9,800 installed. The low end is a modest-size single-stage system that reuses a sound line set and pad. The high end is a larger or variable-speed system with a new line set, a new pad and electrical work. Your written quote lists what's included, and the price doesn't change once you approve it.
| Price factor | Toward the low end | Toward the high end |
|---|---|---|
| Cooling load | Smaller load on the Manual J | Larger load and more tonnage |
| Compressor | Single-stage | Two-stage or variable speed |
| Line set | Existing copper reused: right size, sound and cleaned | New line set, especially through finished ceilings |
| Pad and electrical | Existing pad, disconnect and circuit reused | New pad, disconnect or circuit |
| Controls | Existing thermostat can run the system | New thermostat for two-stage or variable-speed control |
- Warranty: 2 years on our labor, on top of the manufacturer's parts warranty. Many manufacturers require online registration within a set window for their longer parts coverage, so check the terms for your equipment.
- Payment: cash, check or credit card, and financing is available on installs.
- Same price everywhere: the range doesn't change by town, with nothing added for distance.
Our pricing page has every published price, the Minneapolis HVAC cost guide shows how they apply to city houses, and AC replacement cost in Minnesota goes through a quote line by line. If you're still deciding whether to repair the old system, our cooling overview lays out how we make that call.
Sizing starts with a Manual J, not the old nameplate
The tonnage on your old condenser tells us what somebody installed, not what the house needs. (A ton of cooling is 12,000 BTU per hour.) Since that unit went in, you may have added attic insulation, replaced windows, finished the basement or taken out a wall. So we run a Manual J load calculation: room-by-room square footage, window area and which way the glass faces, insulation levels and how leaky the house is. That gives a cooling load, and we pick equipment to match it.
Oversizing is the common mistake here. Our summers are humid, but they aren't long. A unit that's too big cools the house in short blasts, shuts off before the coil has pulled much water out of the air, and leaves the rooms cold and damp. A right-sized system runs longer, quieter cycles and keeps the house drier. Our sizing guide walks through the calculation.
We look at the ductwork and the furnace too. Plenty of older houses have undersized returns, and a new system can only move as much air as the ducts and the furnace blower allow. Whistling registers and a warm upstairs are the usual signs, and we'd rather point that out before the install than after.
SEER2 and compressor staging
Since January 1, 2023, efficiency has been rated in SEER2, a newer DOE test procedure whose numbers read lower than the old SEER for the same equipment, so don't compare a SEER2 quote against an old SEER sticker. Minnesota is in DOE's North region, where the federal minimum for a new split central AC is 13.4 SEER2. Above the minimum, the choice that changes how the house feels is the compressor.
| Compressor | How it runs | Humidity control | Price | Best fit |
|---|---|---|---|---|
| Single-stage | Full capacity or off | Fine when sized right, poor when oversized | Lowest | Well-sized systems with no humidity or upstairs complaints |
| Two-stage | Low stage most of the time, high on the hottest afternoons | Better, from long low-stage runs | Middle | Sticky summers or a warm upper floor |
| Variable speed (inverter) | Adjusts capacity in small steps | Best | Highest | Humidity-sensitive houses and quiet operation |
Two-stage and variable-speed outdoor units need a furnace blower and thermostat that can run them, which we check before quoting. With our short cooling season, a very high SEER2 rating takes longer to earn back on the electric bill than it would in a hotter state. What you notice day to day in a Minnesota July is staging: a house that feels drier at the same setting. Two-stage vs variable speed goes deeper.
Refrigerant, the indoor coil and the line set
Under the EPA's Technology Transitions rule, residential air conditioners manufactured from 2025 on use lower-GWP refrigerants such as R-454B or R-32. R-410A is not banned. On May 21, 2026, EPA removed the January 1, 2026 installation deadline, so R-410A equipment manufactured or imported before 2025 can still be installed, and existing R-410A systems can still be repaired and recharged. Whichever refrigerant your quote uses:
- The indoor coil is replaced with the outdoor unit. The coil on your furnace and the condenser outside are rated as a matched pair, and a new R-454B condenser needs a coil built for R-454B. You can look up a rated match in the AHRI directory.
- R-454B and R-32 are mildly flammable (A2L). They come with their own installation rules, and many new indoor coils include a refrigerant leak sensor.
- The line set gets a hard look. The copper between the units may be reusable if it's the right size, in good shape and properly cleaned. Lines that are kinked, undersized or buried in a finished ceiling with an unknown history may be worth replacing, and the quote says which way we're going.
Coming off an R-22 system, everything changes at once: new condenser, new coil and a close look at the line set.
How does a central AC install work?
- Home visit. We measure for the Manual J and look at the furnace, ducts, electrical panel and where the condenser can go.
- Written quote. One flat-rate price listing the equipment, coil, line set, pad, electrical work and permit. We can price two or three efficiency levels side by side.
- Permit. Replacing a central AC normally needs a mechanical permit from the city, or from the county or state where the city has no building department. We pull it, and our HVAC permit guide explains the inspection.
- Removal. EPA 608 certified technicians recover the refrigerant from the old system, and the old condenser and coil come out.
- New equipment. The coil is set on the furnace and sealed to the plenum with a trap and drain. Line-set joints are brazed with nitrogen flowing through the copper, which keeps scale from forming inside. The condenser goes on a level pad with room for airflow and service.
- Vacuum, charge and test. The system is pulled into a deep vacuum and held to prove it's tight, then charged and checked by superheat or subcooling.
- Walkthrough. We set up the thermostat and show you the filter, the drain and the outdoor unit. The city inspector checks the work afterward.
Installing central air in Minnesota houses
In Minneapolis and Saint Paul, many older houses got central air on ductwork converted from gravity heat. The coil has to fit on the furnace in a low basement, the returns often need work, and a story-and-a-half's upstairs won't cool well without its own ducts or a ductless head. Houses heated by boilers and radiators have no ducts at all; for those we quote ductless mini-splits. On a narrow city lot, finding a condenser spot that meets the manufacturer's clearances takes planning. AC installation in Minneapolis and in Saint Paul cover the local detail.
In the suburbs, 1970s–90s split-levels and ramblers often have return ducts sized for heating, and newer two-story houses fight a hot upper floor, where staging or zoning helps. Wherever the house is, we keep the condenser away from the roof edge where snow and ice slide off, out of the drip line and away from the dryer vent.
Your electric utility decides which cooling rebates apply: Xcel Energy across much of the metro, or a co-op such as Dakota Electric, Connexus Energy or Wright-Hennepin, or a city utility, in many other towns. Programs change every year, and some, such as Dakota Electric's quality-installation rebates, need a utility-registered contractor, so check the current page and ask whether the rebate needs a registered contractor before you buy. We help with the paperwork where the program allows it. In the Wisconsin towns we serve, Focus on Energy is the statewide efficiency program. The federal 25C tax credit, which used to cover qualifying central air, ended for equipment placed in service after December 31, 2025.
Should you replace the furnace or add a heat pump at the same time?
The AC coil sits on your furnace, and the furnace blower moves every bit of the cooled air. If the furnace is young, replace the AC alone and we'll set the blower for the new coil. If the furnace is near the end too, doing both at once lets us match blower, coil and condenser as one system. Furnace installation covers that side.
It's also the moment to price a heat pump instead of a straight AC. It cools the same way, then heats the house in spring and fall, with the furnace taking over through a cold snap. It costs more up front, $7,500–$14,500 installed, and the payoff is best in homes on propane.
We service every major brand and install the one that fits your house and budget, whether that's Carrier, Trane, Lennox or Goodman. Our central AC brands guide compares them for Minnesota.
What's included with ac replacement & installation?
- Manual J load calculation to size the system
- Indoor coil matched to the new outdoor unit and its refrigerant
- Line set checked for size and condition, or replaced
- Level pad, disconnect and electrical hookup
- Mechanical permit pulled for the job
- Old refrigerant recovered by EPA 608 certified technicians
- Deep vacuum, then the charge checked by superheat or subcooling
- 2-year labor warranty plus the manufacturer's parts warranty
AC Replacement & Installation questions
What size air conditioner does my house need?
The size a Manual J load calculation calls for, which may not match the old unit. A ton of cooling is 12,000 BTU per hour, and the load depends on insulation, windows and which way they face, air leakage and layout, so square-foot charts and the old nameplate both tend to oversize. The furnace blower also has to move enough air for the tonnage you pick.
What SEER2 rating do I need in Minnesota?
Minnesota is in the Department of Energy's North region, where the federal minimum for a new split central AC is 13.4 SEER2. Higher ratings cost more, and with our short cooling season they take longer to pay back than they would farther south. The bigger comfort gain here usually comes from correct sizing and a two-stage or variable-speed compressor, which pulls more humidity. We can price two or three efficiency levels side by side.
Can I still buy an R-410A air conditioner?
Yes. R-410A is not banned, and there is no installation deadline: on May 21, 2026, EPA removed the January 1, 2026 date, so R-410A equipment manufactured or imported before 2025 can still be installed. Systems manufactured from 2025 on use lower-GWP refrigerants such as R-454B or R-32. Existing R-410A systems can still be repaired and recharged, so a working one doesn't need early replacement.
Can I replace just the outdoor unit?
Usually not. The indoor coil and the outdoor unit are designed and rated as a matched pair, and equipment manufactured from 2025 on uses R-454B or R-32, which older coils weren't built for. Mixing old and new costs efficiency and can cause trouble with the manufacturer's warranty. We quote the condenser and a matching coil together and tell you whether the existing line set can stay.
Should I replace the AC and furnace at the same time?
Not always. If the furnace is young and healthy, replace the AC alone and we'll set the blower for the new coil. If both are old, doing them together lets us match the blower, coil and condenser as one system, and it's the right moment to price a heat pump instead of a straight AC. We can quote it both ways so you can compare.
Which central air brand is best?
The install matters more than the badge. Carrier, Trane, Lennox, American Standard, Bryant and Goodman all make reliable equipment at several price levels, and what you feel in a Minnesota July comes from sizing, a matched coil, a clean line set and a correct charge. We service every major brand and quote the equipment that fits your house and budget. Compare warranty and registration terms too.
How long does AC installation take?
A straight replacement, with a new condenser, a matched coil and line-set work, is usually a one-day job. A new line set through finished ceilings, electrical panel work or a furnace replacement at the same time can stretch it to two days. The city's inspection comes after the install, and we set up the thermostat and walk you through the system before we leave.
Do I need a permit to replace my air conditioner?
Normally, yes. Replacing a central AC requires a mechanical permit from the city, or from the county or state where the city has no building department. We pull the permit as part of the job, so you don't have to deal with the paperwork, and an inspector checks the finished work. Our post on HVAC permits in Minneapolis and Saint Paul explains what the inspector looks at.
Sources
- AHRI directory ahridirectory.org
- U.S. Environmental Protection Agency epa.gov
- U.S. Department of Energy energy.gov