How is AC Fit Check different from a generic AC size calculator?

AC Fit Check starts with a specific unit and its actual specifications, then checks whether that exact unit fits your room.

Which values do I need from the AC label?

Cooling Capacity or BTU/h and Input Power in watts are the key values, plus compressor type and optional annual energy use.

Does this replace a professional HVAC load calculation?

No. It is a first-pass check before purchase, not an engineering design.

Free AC checker · BTU + watts + your room

Is this exact AC model a good fit for your room?

Start with the AC unit in front of you: enter its model name and copy Cooling Capacity and Input Power from the product label, then add the room conditions. The result checks that exact unit and returns PASS / BORDERLINE / FAIL.

✓We do not require a brand and we do not store your inputs. All calculations run in your browser.

Enter the specs of the model you are considering

Enter a unit from a store or quote and test it against your room using the values printed in its specifications. Only need a rough size? See the BTU-by-room-size chart.

Faster input

Paste the AC specifications instead of copying every number manually

Copy specification text from a product page or label. Parsing stays in your browser; we try to extract the model, Cooling Capacity, Input Power, annual energy use and compressor type.

Specification text

What can the parser extract?

Common English and Arabic formats, including BTU/h or cooling kW, Input/Rated Power in W or kW, annual kWh and inverter type. Always verify extracted values against the source.

1) Room and conditions

Editable example

Room length (m)

Room width (m)

Ceiling height (m)

City / climateA small internal climate adjustment, documented in the method.

Usual occupants

Sun exposure

Insulation

Windows and glazing

Roof exposed to direct sun / top floor Kitchen or high heat-generating equipment in the room

2) Specifications of the selected model

Model name / number (optional)The result link helps you remember which unit you tested. We do not look up the model in a database or send its name to a server.

Cooling Capacity (BTU/h)Example: 12000, 18000 or 24000. This is not electrical input power.

Input Power (W)Copy it from the product label or official specifications. Leave it blank if unknown.

Compressor type

Annual energy use on the energy label (kWh/year)If it appears on the official label, we keep it as published for model comparison and do not turn it into a bill.

BTU ≠ wattsCooling capacity and electrical input are kept separate so we do not invent an electricity cost.

Start with the product labelWe use the model’s actual BTU and Input Power rather than guessing electrical use from capacity.

Inputs are not storedThe calculation runs locally in your browser. A share URL is created only when you request it.

How big a room does each AC size cool?

Average hot-climate room area per capacity (2.8 m ceiling). Open a size for the full chart, worked rooms and electricity use.

9,000 BTU≈ 10 m² · 0.75 ton 12,000 BTU≈ 14 m² · 1 ton 18,000 BTU≈ 21 m² · 1.5 ton 24,000 BTU≈ 28 m² · 2 ton 30,000 BTU≈ 35 m² · 2.5 ton 36,000 BTU≈ 42 m² · 3 ton

Before you click “buy”

These guides explain which values to copy from a product page or energy label and when the calculator result is not enough.

Product label

How do you read Cooling Capacity and Input Power?

Which number describes cooling and which one describes electrical input.

Read →Energy label

Saudi AC energy label: SEER, grades A–G and the December 2026 update

Read the SEER value and grade correctly and compare two units of the same capacity.

Read →Test conditions

T1 vs T3: why capacity at 46 °C matters

What the two SASO test points mean and how to use them when you check a model.

Read →Checklist

12 red flags in AC listings and quotes

Spot class-only capacities, swapped kW values, missing outdoor units and borrowed labels.

Read →Model check

How do you test a specific 18,000 BTU model?

Why the “18k” class alone is not enough—three rooms, one model.

Read →Specifications

Inverter or fixed speed?

How compressor type changes the reading of a specific model.

Read →Tool

AC spec converter and efficiency reader

Convert BTU/h, kW and tons, calculate EER and COP, and spot swapped or inflated numbers.

Open the converter →Calculator

Dehumidifier size + running-cost calculator

Pints/day plus daily, monthly and yearly cost from your room and electricity rate.

Open calculator →

All guides and tools →

What makes AC Fit Check different?

AC Fit Check does not start with a generic “how many BTU?” or “what will my bill be?” question. It starts with a specific real model in front of you and asks whether that unit’s specifications fit this room.

That is why we ask for Cooling Capacity, Input Power and compressor type from the product label and use room conditions only as a comparison reference. For whole-home sizing, multiple rooms or tariff/cost planning, use Saudi Home Energy instead.

Common questions

Is AC Fit Check a generic AC size calculator?

No. The goal is to check a specific model after you find a unit you may buy.

Which values should I copy from the product page?

Cooling Capacity or BTU/h, Input Power in watts and compressor type. If the energy label publishes annual consumption, you can add that too.

Is BTU the same as electricity use?

No. BTU/h describes cooling capacity while Input Power describes electrical power.

Does the result replace a professional HVAC load calculation?

No. This is a first-pass pre-purchase check. Large or unusual spaces need a more detailed engineering load calculation.