AC and heat pump sizing
TonnageMap
How many tons your house actually needs, and what the swap costs.
- 1Six Signs the Air Conditioner Is Too Big
An undersized system announces itself on the hottest day. An oversized one causes problems that get blamed on everything else.
- 2Windows Are the Biggest Single Term, and Orientation Decides How Big
Two houses with identical wall areas and identical insulation can differ by a full ton because of where the glass faces.
- 3Humid and Dry Climates Need Different Machines, Not Just Different Sizes
Two systems of identical tonnage behave completely differently depending on how much of that tonnage is available for cooling air.
- 4400 CFM Per Ton — The Number That Decides Whether the Tonnage Arrives
A three-ton system moving air like a two-ton system is a two-ton system, whatever the label says.
- After Insulating, the House Needs a Smaller System — Not the Same One
- What Each Half-Ton Costs, and Why the Curve Is Flatter Than Expected
- Infiltration — The Load Term That Is Guessed More Often Than Measured
- Balance Point — Where the Heat Pump Stops Being Enough
- The Rating Belongs to the Combination, Not the Outdoor Unit
- Credits and Rebates — What They Reward and What Disqualifies a System
- Commissioning — Three Measurements That Decide What You Actually Got
- What Size Air Conditioner — Start With Square Feet, Then Correct It
- The Same House Needs Different Tonnage in Different Places
AC replacement cost by city
1,494 calculations · Replacement Cost · browse all
- How much does a 2-ton AC replacement cost in New York City, NY?
- How much does a 2-ton AC replacement cost in Durham, NC?
- How much does a 2-ton AC replacement cost in Naperville, IL?
- How much does a 2-ton AC replacement cost in Lee's Summit, MO?
- How much does a 2-ton AC replacement cost in Passaic, NJ?
- How much does a 2-ton AC replacement cost in East Honolulu, HI?
AC replacement cost by state
357 calculations · Replacement Cost · browse all
- AC replacement cost in Alabama for a 1.5 ton system
- AC replacement cost in District of Columbia for a 3 ton system
- AC replacement cost in Kentucky for a 1.5 ton system
- AC replacement cost in Missouri for a 3 ton system
- AC replacement cost in North Dakota for a 1.5 ton system
- AC replacement cost in Tennessee for a 3 ton system
AC tons by square foot and climate
75 calculations · Tons by Square Foot · browse all