Webasto Air Top 2000 STC vs Webasto Air Top Pro 25

Last updated: October 30, 2026

The Webasto Air Top 2000 STC and the Webasto Air Top Pro 25 are evenly matched, rated 3.4 and 3.3. The Webasto Air Top Pro 25 wins on low setting. The Webasto Air Top 2000 STC costs $580 less ($1,295 vs $1,875).

Webasto Air Top 2000 STC vs Webasto Air Top Pro 25

Webasto Air Top Pro 25

For van and truck owners who want a new type-approved 2 kW heater with altitude adjustment and a very low idle setting, or a drop-in replacement for an Air Top 2000 STC. It costs far more than clone heaters of the same size.

VMACS $1,875
$1,875

Prices were last checked October 30, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Which should you buy?

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every split diesel heater; a clear win is highlighted. How we rank explains each one.

Factor weightWebasto Air Top 2000 STCWebasto Air Top Pro 25
Overall rating3.4/53.3/5
Value 25%0 $648 per kW ($1,295, 2 kW)0 $750 per kW ($1,875, 2.5 kW)
Type approval 20%100 type approved (ECE R122)100 type approved (ECE R122)
Controls and safety 15%45 holds a set temperature, timer; no CO sensor50 holds a set temperature, automatic altitude; no CO sensor
Power draw 15%69 up to 29 W running50 power draw not published (neutral score used)
Warranty 15%50 2-year warranty50 warranty not published (neutral score used)
Low setting 10%92 down to 0.9 kW100 down to 0.7 kW

Specifications

Webasto Air Top 2000 STCWebasto Air Top Pro 25
Heating
Heat output (maker)2 kW2.5 kW
Lowest output0.9 kW0.7 kW
Fuel burn0.12 to 0.24 L/h-
BuildSplit (installed)Split (installed)
Power
Supply12V12V
Running draw14 to 29 W-
Controls and safety
ThermostatYesYes
Automatic altitudeNoYes, to 18,045 ft
AppNoNo
TimerYesNo
RemoteNoNo
CO shutoffNoNo
Type approvalECE R122ECE R122
Build
Dimensions12.25 x 4.78 x 4.85 in12.6 x 5 x 4.9 in
Weight5.7 lb6.5 lb
Warranty2 years-
Released-2026-07

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