The Vaillant Rubber Anti-Vibration Feet (Large) — MPN 0020250226 — is Vaillant's own genuine accessory for aroTHERM air-to-water heat pump outdoor units, supplied as a pair of 600mm long rubber feet with an inset mounting channel and all required fixings included.
Fitted beneath the outdoor unit, the feet provide vibration-isolating support and raise the base clearance of the heat pump, improving access to the condensate discharge and drainage connections underneath while helping to reduce vibration-transmitted noise into the building structure.
~9 kg
Approx. Weight (Pair)
Fixings Incl.
Fitting Kit
Important Safety Information: Installation by a Qualified Installer
These feet form part of the outdoor unit's structural support and vibration isolation. Fitting must be carried out by a suitably qualified heat pump installer in accordance with Vaillant's installation instructions for the specific aroTHERM model, including correct concrete foundation or support base preparation. The concrete foundation must not be joined to the building's own foundations, as this can transmit vibration and noise directly into the structure.
Please Note: Confirm Model Compatibility Before Ordering
This part (0020250226) is listed by Vaillant as an accessory for the aroTHERM plus range. A smaller variant, the Anti-Vibration Rubber Feet — Small (0020252091), is also available for lower-output aroTHERM plus models. Always check the accessories list for your specific heat pump model and size before ordering to ensure the large feet are the correct fit.
Please Note: Weight Figures Vary Across Retailer Listings
Published weight for this pair ranges from approximately 7.6kg to 9.56kg depending on the retailer listing consulted, and no single figure could be confirmed directly from a Vaillant datasheet at the time of writing. We list the most commonly cited approximate weight below; treat it as indicative rather than exact.
Vibration Isolation
The rubber construction absorbs and dampens operational vibration from the outdoor unit's compressor and fan, reducing the transfer of structure-borne noise into the ground or mounting surface — particularly valuable on hard-standing close to a building.
Raised Base Clearance
Lifting the unit clear of the ground improves access to the condensate discharge and drainage connections underneath the outdoor unit, simplifying both installation and future servicing.
Improved Air Circulation
Additional clearance beneath the unit helps maintain unobstructed airflow to the fan intake, supporting consistent heat exchanger performance, particularly in locations prone to standing water, leaf litter or snow.
Genuine Vaillant Accessory
As an official Vaillant part, the feet are engineered specifically for aroTHERM outdoor unit dimensions and weight loading, ensuring proper support and warranty compliance compared with generic anti-vibration mounts.
Supplied as a Complete Fixing Kit
The pair comes complete with all fittings required for installation, avoiding the need to source separate fixings on site.
Warranty-Compliant Ground Clearance
Correct fitting helps ensure the outdoor unit is raised to a height that is consistent with Vaillant's installation requirements for ground-mounted positions, supporting warranty compliance.
| Product Details |
| Manufacturer |
Vaillant |
| Product Type |
Rubber Anti-Vibration Feet (Large) — Heat Pump Accessory |
| Manufacturer Part Number (MPN) |
20250226 |
| Full Part Code |
0020250226 |
| GTIN / EAN |
4024074839515 |
| Quantity Supplied |
Pair (2 feet) |
| Physical Specification |
| Material |
Rubber, with inset mounting channel |
| Foot Length |
610 mm |
| Foot Width |
150 mm |
| Foot Height |
220 mm |
| Base Clearance Raised |
Approx. 600 mm from ground |
| Weight (Pair, Approx.) |
Approx. 9 kg (retailer figures range 7.6–9.56 kg) |
| Compatibility |
| Compatible Range |
Vaillant aroTHERM plus air-to-water heat pumps |
| Related Accessory |
Anti-Vibration Rubber Feet — Small (0020252091), for lower-output models |
| Fixings |
All required fittings included |
What is included with the Vaillant Anti-Vibration Feet Large?
The product is supplied as a pair of 600mm rubber feet complete with all fixings required for installation onto the aroTHERM outdoor unit and its support base.
Which Vaillant heat pumps is this compatible with?
This part (0020250226) is listed as an accessory for the aroTHERM plus range. If you have a lower-output aroTHERM plus model, check whether the Anti-Vibration Rubber Feet — Small (0020252091) is the correct fit instead.
Do I need these feet, or can the unit sit directly on the ground?
Vaillant's installation instructions require the outdoor unit to be installed with vibration-isolating feet on a suitable support base, such as a concrete foundation, steel beams, or concrete blocks. The feet also raise the unit for condensate drainage access.
Can I install these feet myself?
Fitting should be carried out by a suitably qualified heat pump installer as part of the outdoor unit installation, following the manufacturer's installation instructions for the specific model.
Does raising the unit affect warranty compliance?
Correct installation with the specified anti-vibration feet helps ensure the ground clearance requirements set out in Vaillant's installation instructions are met, which can be a factor in maintaining warranty compliance.
