How to Size Central AC for a Twin Cities Home
Why square-foot rules oversize Minnesota air conditioners, what a Manual J load calculation measures, and how to read the size of the AC you have now.
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AC Replacement in Andover, MN
Central air replacement in Andover costs $5,200–$9,800 installed with us, sized by Manual J with a coil matched to the new condenser. Andover buys its electricity from Connexus Energy, which lists rebates for both air conditioners and air-source heat pumps, so it pays to price a heat pump alongside the AC.
AC replacement calls in Andover homes
New AC installs in Andover often start with a question about the furnace fuel. On a CenterPoint gas house, a straight central AC and a heat pump that hands off to the furnace both make sense. On a propane house, the heat pump earns more of its keep, because every mild-weather hour it heats is propane you don't buy. Connexus Energy's dual-fuel off-peak program strengthens that case, and its rebates for heat pumps and air conditioners change from year to year.
Placement is rarely tight here. On the bigger lots we set the pad where the line set stays short, away from dryer vents and roof drip edges, with clearance for airflow and service. Sizing comes from a Manual J, and in the tight 2000s houses it often calls for less capacity than the square footage suggests, which helps the new system pull humidity instead of short-cycling.
Updated September 23, 2026
How much does a new central AC cost in Andover?
A new central air conditioner from us runs about $5,200–$9,800 installed in Andover, sized with a Manual J load calculation. Same prices in Andover as in every town we serve. See the AC replacement cost guide or furnace and AC together.
Are there rebates for a new air conditioner in Andover?
Andover homes buy gas from CenterPoint Energy, whose rebates on high-efficiency furnaces let you use the dealer of your choice as long as the application goes in the same year as the install. Electricity comes from Connexus Energy, which offers rebates on air-source, ductless and ground-source heat pumps and on central air, plus a reduced-rate program for heat pumps paired with a furnace. Ask whether a Connexus heat pump rebate needs a registered contractor. The Connexus programs follow your electric service, so homes heating with propane can use them too. Rebate programs change every year, so check the utility's current terms before you buy.
Our guides: Xcel and CenterPoint rebates, heat pump rebates.
Signs it's time to replace your AC
- An R-22 system with a refrigerant leak
- A failed compressor on an older unit
- A leaking evaporator coil on a system that's had other major repairs
- A system that has needed refrigerant more than once
- Upstairs rooms that never cool, even with the AC running all afternoon
- A house that reaches the setpoint but still feels damp
- Repair quotes that keep coming back for the same system
More detail on our ac replacement & installation page.
AC replacement in Andover: questions
Can a heat pump heat our Andover house when it's well below zero?
It can carry much of the load. Cold-climate models keep producing heat well below zero, and Mitsubishi rates its Hyper-Heat line down to -13°F, but capacity drops as the temperature falls. In Andover we pair the heat pump with a gas or propane furnace that takes over in deep cold, which is also the setup the Connexus off-peak program expects. Our heat pump installs are $7,500–$14,500.
Our Andover house was built in 2005. Can the new AC reuse the old line set?
Often, if it's sized correctly and undamaged. A 2005 system ran on R-22 or R-410A, and the new condenser will use R-454B or R-32 with a matched coil. We check the line diameters against the new unit's specifications, flush lines that carried R-22, then pressure-test and evacuate. Lines that are kinked, undersized or buried in a finished ceiling we can't inspect get replaced.
More in Andover
- Furnace repair in Andover
- Furnace replacement in Andover
- AC repair in Andover
- All HVAC service in Andover
AC replacement near Andover
- Ham Lake, MN 2 mi
- Anoka, MN 5 mi
- Blaine, MN 6 mi
- Champlin, MN 6 mi
- Oak Grove, MN 8 mi
- Coon Rapids, MN 8 mi
Brands we install and service
Guides on ac replacement
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Your AC runs but the house won't cool. Checks a technician makes, in order: thermostat, filter, ice, outdoor unit, drain, and when it's a refrigerant leak.
Read the guideWhy Is the Fan on My Outdoor AC Unit Not Spinning?
Outdoor AC fan stopped while the unit hums? Usually a capacitor, fan motor or contactor. Why to shut it off now, what you can check safely, and typical costs.
Read the guideContact Us
AC replacement in Andover? Call or send a request.