Air Conditioners

October 22, 2026

915

Last Updated: October 2026 | Derek Holloway
This page links to every air conditioner guide and review on the site. Prices and models change, so check each listing.

Quick Answer: Pick a path: one room, whole house or no ducts. Size the unit first with the BTU or tonnage calculator, then compare reviews.

Air conditioners come in many types, and the right one depends on the space. This hub groups our buying guides, calculators and reviews so you can find the right one fast.

Table of Contents

Start Here

Cooling one room? Look at window, through-the-wall and portable units, and use the BTU calculator.
Whole house? See central air and the AC tonnage calculator.
No ductwork? Compare ductless mini-splits.
Worried about the bill? Try the SEER2 savings calculator.

Here is where air conditioning is heading: inverter compressors, heat pump models that also heat, quieter window units and more ductless installs. New refrigerants and higher efficiency rules are also changing what is sold and what repairs cost.

Air Conditioner Buying Guides

Ceiling Fan Buying Guides

Central Air Conditioner Reviews

Ductless Mini-Split Air Conditioner Reviews

The downside is price and heat. Higher-efficiency and new-refrigerant equipment costs more up front, and some older units will be harder to repair. Hotter summers push systems to run longer, which raises bills and wear. A unit that is too big or too small makes things worse, since an oversized one shuts off early and leaves the air damp. Expect more sticker shock and more heat-wave breakdowns. Size with a calculator, and book a tune-up before summer.

Portable Air Conditioner Reviews

Through-The-Wall Air Conditioner Reviews

Windows Air Conditioner Reviews

FAQ

What size air conditioner do you need?

Match BTU to the room using the BTU calculator, or tons to the house using the tonnage calculator. Oversizing is as bad as undersizing.

Window, portable or mini-split?

Window units are the most efficient for one room. Portables are easy to move but weaker. Mini-splits suit homes without ducts.

What does SEER2 mean?

It is the current efficiency rating for central air and heat pumps. Higher is better.

When should you service your AC?

Once a year, before the cooling season.

Final Word

Choose the type, size it with the math and schedule a yearly tune-up.

What comes next: more heat pump rebates, more window and portable units with inverters and more smart controls. Pick the type that fits the space, then size it with the calculator.