Need to size the air conditioning for a clinic? Clinics and medical rooms need reliable, well-filtered cooling for patient comfort and hygiene, plus allowance for medical equipment heat — about a 28 BTU/sq ft factor. Consistent temperature and humidity also matter for medicine storage and infection control. The calculator below is pre-set to a clinic at 500 sq ft — a clinic that size typically needs about a 1.5 Ton AC (16,940 BTU/hr, 5.0 kW) in a moderate climate. Enter your own area for an instant answer.
🧊 Find the Right AC Size for Your Room — in Tons & BTU
Convert room size (sq ft or m²) to the exact AC tonnage you need — 0.5, 1, 1.5, 2 Ton and up. ACCA Manual-J inspired, in tons, BTU/hr and kW, for the US, UK, Europe, India, UAE, Saudi Arabia & Australia.
🌍 Prefer metric? Switch units here
🏠1. Space Type
📐2. Floor Area & Ceiling
Range: 50 – 10,000 sq ft
Range: 7 – 20 ft
Range: 0 – 50 people
🌍3. Country / Climate
The base factor assumes a 30 °C / 86 °F design day. Change the chip above to match your region.
🧱4. Insulation
☀️5. Sun Exposure
🪟6. Windows / Glazing
➕Advanced loads (kitchen, appliances, exhaust) — optional
Wattage × 3.4 = BTU/hr. e.g. 500 W ≈ 1,700 BTU/hr
For office IT, gym gear, lab equipment
Clinic AC Size by Floor Area
Typical AC tonnage for a clinic with an 8-foot ceiling and average conditions. Heavy equipment, high occupancy, or a hot climate will push these up — adjust those in the calculator:
| Clinic Size | Recommended AC | Approx. BTU/hr |
|---|---|---|
| 300 sq ft | 1 Ton | 10,164 BTU/hr |
| 500 sq ft | 1.5 Ton | 16,940 BTU/hr |
| 800 sq ft | 2.5 Ton | 27,104 BTU/hr |
| 1,200 sq ft | 4 Ton | 40,656 BTU/hr |
| 1,500 sq ft | 5 Ton | 50,820 BTU/hr |
Sizing AC for a Clinic — What to Consider
Prioritise fresh-air ventilation and filtration alongside cooling, and add equipment heat (imaging, sterilisers) via the equipment field. Waiting rooms should be sized for peak occupancy; treatment rooms for equipment and comfort. The calculator applies the clinic heat-gain factor automatically; use the advanced fields (occupants, equipment, appliances, ventilation) to match your exact space, and remember an oversized unit short-cycles and dehumidifies poorly — right-sizing gives better comfort and lower running cost.
Frequently Asked Questions
What size AC do I need for a clinic? A 500 sq ft clinic typically needs about a 1.5 Ton AC (16,940 BTU/hr) in a moderate climate; scale up or down with your floor area per the chart above.
How do you size AC for a clinic? About 28 BTU/sq ft plus equipment and ventilation allowance. Clinics also need good filtration and fresh air, so cooling is designed together with ventilation.
How many BTU per square foot for a clinic? Roughly 28 BTU/sq ft as a starting factor, before adjusting for climate, ceiling height, occupancy, and equipment heat.
Related: refrigeration cycle diagram and components explained.
Estimates vary by contractor. Compare free quotes from licensed local pros before you commit. Request a quote →
High-efficiency systems may qualify for utility rebates and federal or state incentives. Find current programs at ENERGY STAR & DSIRE.
Figures are reviewed by the Refcon HVAC engineering team using U.S. DOE, ENERGY STAR & ACCA Manual J data. Estimates only — confirm with a licensed pro.