AC Installation in Garrison, ND
A new air conditioner in Garrison will run from July through August every year. Tell us about the house, and a licensed contractor who covers McLean County will get in touch.
Tell us about the job
It takes about a minute.
Garrison only needs cooling two months a year, but the storms are the real test
July and August are the stretch when Garrison homes run the air conditioner, with afternoons averaging 79°F. That is a short season, but it puts the unit through real work in a compressed stretch of the year.
The bigger factor is what sits outside through the rest of the year. Mclean County has logged 57 hail events and 88 damaging wind events over the past ten years, with hail up to 1.75 inches recorded. An outdoor condenser has to survive that exposure between cooling seasons. Any new system installed here also has to meet the federal efficiency minimum of 13.4 SEER2, the baseline for central air conditioners built since 2023.
- 2 months
- July through August, your air conditioner is on duty
- 79°F
- the average summer afternoon it cools against
- 57 hail events
- in ten years, and hail bends the fins on outdoor coils
- 13.4 SEER2
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
Going above the federal minimum saves little here, about $10 a year.
Estimates for a typical McLean County home, from EIA household energy data, North Dakota fuel prices and NOAA climate normals. Your home will differ.
North Dakota requires HVAC contractors to hold a state license.
That license is tied to the contractor, not to each job, so it covers the person or business holding it rather than this specific installation. North Dakota also sets a threshold at $4,000. Work under that amount does not need a licensed contractor at all.
An air conditioner installation is the kind of job the license is meant to cover. Beyond the state license, most cities and counties in North Dakota require a permit for this kind of installation, along with an inspection once the work is finished, which is where someone independent of the contractor looks at what was done.
Sources: North Dakota Legislative Branch · North Dakota Secretary of State
- What size air conditioner does my house need?
- The right size comes from a load calculation, not a rule of thumb based on square footage. A contractor measures your windows, insulation, ceiling height, and how much shade your house gets before landing on a number. An oversized unit cools the air fast but shuts off before it pulls the humidity out, so the house feels damp. Since Garrison only needs cooling in July and August, it is worth getting this right rather than guessing high.
- Should I replace the whole system or just the outdoor unit?
- If your furnace or air handler is old, replacing only the outdoor unit can cause problems. The indoor and outdoor parts are matched to work together, and pairing a new condenser with an old coil often means the system never reaches its rated efficiency. A contractor can check the age and condition of the indoor unit and tell you whether it can handle a new outdoor unit or whether both need to go at once.
- Do HVAC contractors in Garrison need a state license to work on my home?
- Yes. North Dakota requires HVAC contractors to hold a state license, issued through the Secretary of State. That license covers the contractor as a business, not each individual job. There is an exception for small jobs, but an air conditioner installation is not the kind of work that exception is meant for, so check that whoever you hire is licensed. You will also need a permit from the local building office, with an inspection once the work is done. A contractor can walk you through what the permit covers for your specific job.