AC installation.
A correctly sized central air system or ductless mini-split keeps your home comfortable through humid Minnesota summers and holds down energy bills. We size it, install it, and start it up right.
A well-sized, properly installed AC cools more efficiently and lasts longer.
North Star handles central AC replacement and new installs, plus ductless mini-split systems for homes without existing ductwork or for room-by-room comfort control. We install Carrier, Lennox, and Mitsubishi equipment and assist with Xcel Energy rebate applications.
- In-home load calculation and proper sizing
- Central AC replacement and new installation
- Ductless mini-split systems (single and multi-zone)
- Carrier, Lennox, and Mitsubishi equipment
- SEER2 efficiency rating guidance
- Electrical disconnect and concrete pad installation
- Refrigerant line and drain line routing
- Thermostat and smart control setup
- Full system commissioning and test
- Xcel Energy rebate application assistance
Sizing is where most AC installs go wrong.
An oversized AC cools the house too fast, shuts off before it can dehumidify, and short-cycles its way to an early death. An undersized one runs constantly and never catches up on a hot day.
We run an actual Manual J load calculation on your home, measure duct sizes, check insulation, and then recommend a unit sized to the house, not the next convenient model up. It's the single most important decision in the install.
From assessment to a running system in one day.
Free in-home assessment
Size to the home, not to the next convenient model. Ductwork condition evaluated and photographed.
Equipment recommendation and pricing
Efficiency tiers with estimated energy costs and payback estimates based on your actual usage.
Installation day
Most central AC installs take 4 to 6 hours. Multi-zone mini-splits vary by unit count, usually one to two days.
System commissioning
Fully charged, run under load, supply temperatures verified. Pressures confirmed in manufacturer spec.
Rebate assistance
Xcel Energy and CenterPoint paperwork handled. You get a copy with the invoice.
AC installation at a glance.
Central AC or ductless mini-split?
Both are good options for the right home. Here's how to think about which is which.
Central AC is right if you have existing forced-air ductwork in good condition.
Mini-splits work best in homes without ducts, additions, sunrooms, or for zone control.
Mini-splits are more efficient per zone; central AC is usually lower upfront cost.
Multi-zone mini-splits can condition several rooms from one outdoor unit.
Mitsubishi Hyper Heat mini-splits also provide efficient heating in winter.
We can run the numbers on both options for your specific home.
If your furnace is also 15+ years old, a matched system install often costs less together than separately.
Ductwork in poor condition should be addressed before installing new equipment, not after.
AC installation FAQ.
How we size, install and price a new cooling system.
How do you decide what size AC I need?
We perform a Manual J load calculation, measure ducts and check insulation. Oversizing causes short-cycling and poor dehumidification, and undersizing runs constantly, so we size to the home.
How long does installation take?
Most central AC installs take 4 to 6 hours. Multi-zone mini-splits vary by unit count and usually take one to two days.
Central AC or ductless mini-split?
Central AC suits homes with existing ductwork in good condition. Mini-splits suit homes without ducts, additions and sunrooms, and give room-by-room control.
What efficiency rating should I look for?
Our baseline is SEER2 14.3. Higher ratings cost more up front and save more on cooling bills, and we show estimated payback based on your actual usage.
Is the assessment free?
Yes. The in-home assessment is free and includes a ductwork evaluation and a written recommendation.
Do you help with rebates?
Yes. We handle Xcel Energy and CenterPoint rebate applications and give you a copy with the invoice.
Thinking about replacing your AC?
Schedule a free in-home assessment. We'll measure the home, look at the ductwork, and give you a straight recommendation with installed pricing.