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.
Unique HVAC Demands for a Clinic
When calculating the AC tonnage for a Clinic, standard residential square-footage rules of thumb will lead to disastrously incorrect sizing. This is because a Clinic introduces highly specific internal heat loads, specifically: medical equipment heat and strict humidity/filtration mandates.
Medical clinics require hospital-grade filtration (often HEPA) and precise humidity control to prevent airborne pathogens. This necessitates powerful blower motors and oversized AC coils to handle the restricted airflow. Use the calculator below to factor in these unique commercial variables and get an accurate estimate of the required cooling capacity.
🧊 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.