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Views: 0 Author: Site Editor Publish Time: 2026-06-13 Origin: Site
For 10–12m city buses, tourist coaches and school buses, selecting a rooftop air conditioner with properly matched parameters is the foundation of ensuring passenger comfort and controlling fleet operating costs. As a flagship medium-to-large bus AC solution from TCHAIN, the TCD12D delivers balanced cooling and heating performance, and has been widely deployed in commercial bus fleets across South Asia, the Middle East and Southeast Asia.
Below we explain the core parameters of the TCD12D unit in plain terms, to help you quickly grasp its performance positioning and application scope.
Cooling capacity is the core indicator that measures the refrigeration performance of a bus air conditioner, and directly determines the cooling effect inside the carriage under high-temperature weather.
Under standard working conditions, the TCD12D removes 32,000 kilocalories of heat from the enclosed passenger space per hour. Paired with a large-area condenser and high-efficiency scroll compressor, it maintains stable cooling output even when ambient temperature reaches 55℃, easily handling extreme heat waves in tropical and subtropical regions.
This cooling output is perfectly matched to the interior space of 10–12m buses, ensuring rapid temperature drop and uniform cooling across the whole carriage even under full passenger load.
Beyond summer cooling, heating performance in low-temperature seasons also directly affects the year-round riding experience.
The TCD12D delivers a rated heating capacity of 30,000 Kcal/h under rated working conditions. It quickly raises the interior temperature of the carriage in cold weather, delivering a warm and comfortable riding environment for passengers.
Its integrated cooling and heating design eliminates the need for additional independent heating devices, reduces vehicle modification costs, and simplifies later operation and maintenance management.
Matching AC capacity with vehicle size is the primary principle for selecting bus air conditioners. Insufficient capacity leads to poor cooling effect, while excessive capacity causes unnecessary energy waste.
The TCD12D rooftop bus air conditioner is professionally engineered for 10.0–12.0m standard buses and passenger coaches, including city buses, intercity coaches, tourist buses and school buses of corresponding sizes.
Its streamlined rooftop structure fits the roof profile of mainstream bus models, with light overall weight and reasonable load distribution that imposes no extra burden on the vehicle chassis.
Refrigerant type not only affects the heat exchange efficiency of the air conditioner, but also relates to environmental protection performance and compliance with regional regulations.
The TCD12D adopts R410A, an internationally widely recognized eco-friendly refrigerant. It features high heat exchange efficiency, stable cooling performance and excellent energy-saving effect. Compared with traditional refrigerants, it does not damage the ozone layer, meets the environmental standards of most countries and regions, and lowers long-term operating costs.
Meanwhile, the stable chemical properties of R410A also help extend the service life of the compressor and pipeline system, and reduce the failure rate of the refrigeration system.
As a mature rooftop bus AC solution, the TCD12D balances performance, reliability and cost, and has been verified by large-scale application in global markets.
Dual-mode strong performance: 32000 Kcal/h cooling + 30000 Kcal/h heating, adapts to extreme climates all year round
Precise capacity matching: Optimized for 10–12m buses, no performance shortage or energy waste
Eco-friendly and efficient: R410A refrigerant with high efficiency and low consumption, reduces fleet operating costs
Proven reliability: Manufactured under IATF16949 quality system, long service life and low maintenance cost
If you need the complete datasheet of TCD12D, or customized air conditioning solutions for special vehicle models, feel free to contact our technical team for detailed support.
