AC size calculator
Estimate the tonnage and BTU your home needs, plus the 2026 installed price band for that size — before you compare quotes.
Size my systemFree, no email required
Homeowner tools
Two calculators built from the same numbers we quote every day on Long Island — so you can check a proposal before you sign it.
Repair or replace calculator
Score your system by age, refrigerant, repair quote and comfort, and get a straight recommendation with the numbers behind it.
Run the numbersGuides that pair with these tools
Want the real numbers for your house?
Every installation estimate includes a free room-by-room load calculation and a static-pressure reading on your existing ductwork.