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Views: 0 Author: Site Editor Publish Time: 2026-11-11 Origin: Site
No. Bus air conditioner heating is not standard on every unit. On TCHAIN's electric bus air conditioner range (TCD / TD series), the base configuration is cooling-only; heating is a specified option with rated heating capacity from 12,000 to 30,000 kcal/h depending on model.
A specification sheet can list both rated cooling capacity and rated heating capacity. That does not mean every unit shipped includes heating. Treating the two numbers as a single "cools and heats" package is one of the most common reasons a bus air conditioner specification fails to match the conditions a fleet actually runs in.
TCHAIN's electric bus air conditioner range (TCD / TD series) lists five models: TCD07A, TCD07D, TCD08D, TD40A and TCD12D.
The base configuration for every model in this range is cooling-only.
Rated heating capacity in the catalogue runs from 12,000 kcal/h on TCD07A to 30,000 kcal/h on TCD12D.
TCD08D and TCD12D each list seven configurations; TD40A lists two.
Diesel bus air conditioner (TCH series) and built-in (TCN / TC series) parameter tables list rated cooling capacity only.
All configurations and parameters are subject to confirmation by both parties.
No. On TCHAIN's electric bus air conditioner range (TCD / TD series), the base configuration is cooling-only, and heating is specified separately as an optional configuration. The rated heating capacity shown in the parameter table describes the heating-enabled variants of that model, not every unit shipped.
Two quotations can name the same model and the same cooling capacity while specifying different configurations. Without a configuration line written into the specification, the two offers are not comparable.
Seven configuration names appear across the TCD / TD series in the TCHAIN catalogue. Depending on the model, the product type table lists:
Cooling
Cooling + PTC
Heat pump + PTC
Cooling + plate type heat exchanger
Cooling + PTC + plate type heat exchanger
Cooling + plate type heat exchanger + PTC + expansion tank
Cooling + plate type heat exchanger + PTC + expansion tank + water pump
Not every model offers all seven. TCD08D and TCD12D list seven configurations. TD40A lists two: cooling, and heat pump + PTC. TCD07A and TCD07D list a smaller set.
The catalogue names these options without ranking them by efficiency or recommending one technology over another. Selecting among them is part of the configuration to be agreed with the supplier.
For diesel bus air conditioners (TCH series) and built-in units (TCN / TC series), the catalogue parameter tables list rated cooling capacity only. Heating availability for these ranges is confirmed case by case with our engineering team, rather than assumed from the catalogue.
The table below reproduces the rated figures stated in the TCHAIN catalogue for the electric bus range.
Model | Rated cooling (kcal/h) | Rated heating (kcal/h) | Applicable bus length | On-board voltage |
TCD07A | 16,000 | 12,000 | 6.0–7.0 m | DC 420–750 V |
TCD07D | 18,000 | 14,000 | 7.0–8.0 m | DC 420–720 V |
TCD08D | 24,000 | 20,000 | 8.0–8.5 m | DC 420–720 V |
TD40A | 28,000 | 26,000 | 10.0–10.5 m | DC 420–720 V |
TCD12D | 32,000 | 30,000 | 10.0–12.0 m | DC 420–720 V |
All figures are rated values. As noted throughout the catalogue, configurations, parameters and applicable bus lengths may change with region and customer requirements, and are subject to confirmation by both parties.
Because the catalogue itself treats region as a variable. For TCD07A, the stated application is 6.0–7.0 m buses in southern regions or 7.0–8.0 m buses in northern regions. For TCD07D, it is 6.5–7.5 m in southern regions or 7.5–8.5 m in northern regions. The same model is matched to different bus lengths depending on where the fleet runs.
A fleet operating in a warm region may never need a heating configuration. A fleet running through cold seasons needs the heating method agreed before the specification is finalised. Operating climate therefore belongs in the brief alongside bus length and voltage.
Four items. Each one changes which model and which configuration applies.
Bus length and vehicle type — each model in the electric range is matched to a specific length band, from 6.0–7.0 m up to 10.0–12.0 m.
On-board voltage — the electric range is specified at DC 420–720 V, except TCD07A at DC 420–750 V; diesel and built-in ranges are specified at DC 12/24 V or DC 24 V depending on model.
Operating climate — state the region and the seasonal conditions the fleet must cover.
Heating requirement — cooling-only, or one of the heating-enabled configurations listed in the catalogue, written into the specification by its exact configuration name.
Ask every supplier responding to your enquiry to quote against these four points. It makes the comparison like-for-like and removes the ambiguity created by a parameter table that lists both cooling and heating capacity.
Send us the bus length, on-board voltage, target market climate and whether heating is required. TCHAIN confirms the exact configuration, applicable model, and rated cooling and heating capacities before the specification is finalised. If a diesel or built-in model is under consideration, name the model and heating availability is confirmed case by case.
All configurations and parameters are subject to confirmation by both parties.
No. On TCHAIN's electric bus air conditioner range (TCD / TD series), the base configuration is cooling-only. Heating is a specified option, and the rated heating capacity in the catalogue applies to the heating-enabled variants of each model.
A cooling-only bus air conditioner is a unit specified without a heating configuration. In the TCHAIN catalogue, cooling is listed as a configuration option on every model in the electric bus range, including TCD07A, TCD07D, TCD08D, TD40A and TCD12D.
The TCHAIN catalogue lists PTC, heat pump + PTC, and plate type heat exchanger configurations for the electric bus range, including combinations with an expansion tank and a water pump. The exact set of options differs by model.
Rated heating capacity in the TCHAIN electric bus range runs from 12,000 kcal/h on TCD07A to 30,000 kcal/h on TCD12D. Intermediate models are 14,000 kcal/h on TCD07D, 20,000 kcal/h on TCD08D and 26,000 kcal/h on TD40A.
The TCHAIN diesel bus air conditioner (TCH series) and built-in (TCN / TC series) parameter tables list rated cooling capacity only. Heating options for these ranges are confirmed case by case with our engineering team, rather than assumed from the catalogue.
State the bus length, on-board voltage, operating climate and whether heating is required, then name the exact heating configuration in the specification. TCHAIN confirms the applicable model, configuration and rated capacities before the specification is finalised.
These are catalogue labels, not industry-standard definitions.
Cooling — the configuration named "Cooling" in the product type table; it is the base configuration of the electric bus range.
Heating-enabled — any configuration in the product type table that adds PTC, a heat pump, or a plate type heat exchanger, alone or in combination.
Rated heating capacity — the value stated in the parameter table for a model, expressed in kcal/h.
The catalogue names the configurations but does not describe their working principles or compare their performance. Any performance comparison needs to be confirmed with our engineering team before it is put into a specification.
Source: TCHAIN bus air conditioner product catalogue (CN edition), parameter tables and product type tables.
