Dometic Air Filter Poly 25" x 7" - Fits ATL12 Air Conditioner - Part# 235000911

DometicSKU: 235000911
Added to catalog: March 10, 2026
Last product update: June 6, 2026 at 12:00 PM

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The Dometic 235000911 is a genuine OEM polyester air filter designed specifically for Dometic ATL12 rooftop air conditioners. This 25" x 7" filter captures dust, pollen, and airborne particles to maintain optimal airflow and cooling efficiency in your RV. Regular filter replacement is essential for preventing system strain, reducing energy consumption, and ensuring clean cabin air during your travels.

RV owners with Dometic ATL12 units should replace this filter at the start of each camping season or every 30 days of continuous use. A clogged or dirty filter forces your air conditioner to work harder, leading to reduced cooling performance and potential compressor damage over time.

Key Features

  • Genuine Dometic OEM Part: Factory-spec polyester filter material ensures proper fit and filtration performance
  • Optimal Dimensions: 25" x 7" size designed specifically for ATL12 air conditioner return air grille
  • Easy Installation: Drop-in replacement filter installs in seconds without tools or modifications
  • Improved Air Quality: Captures dust, pollen, and debris to keep your RV cabin air clean and fresh
  • Extended System Life: Regular filter changes prevent dirt buildup on evaporator coils and reduce compressor wear
  • Washable & Reusable: Polyester construction allows for cleaning and reuse between replacements

Technical Specifications

Part Number 235000911
Filter Dimensions 25" x 7"
Material Polyester
Compatible Unit Dometic ATL12 Air Conditioner
Filter Type Return Air Filter
Maintenance Washable and Reusable

Compatibility

Model Series Description
ATL12 Dometic ATL12 Rooftop Air Conditioner

Frequently Asked Questions

Q: How often should I replace this air filter?

A: Replace or clean the filter at the beginning of each camping season and every 30 days during continuous use. If you camp in dusty environments or have pets, inspect and clean the filter more frequently. A visibly dirty or damaged filter should be replaced immediately.

Q: Can I wash and reuse this polyester filter?

A: Yes, this polyester filter can be gently washed with mild soap and water, rinsed thoroughly, and allowed to air dry completely before reinstalling. However, after multiple washings or if the filter shows signs of deterioration, it should be replaced with a new one.

Q: Will this filter fit other Dometic air conditioner models?

A: This filter is specifically sized for the Dometic ATL12 air conditioner. Other Dometic models require different filter sizes. Always verify your air conditioner model number before ordering to ensure proper fit.

Q: What happens if I don't replace a dirty air filter?

A: A clogged filter restricts airflow, forcing your air conditioner to work harder and consume more power. This reduces cooling efficiency, increases energy costs, and can lead to frozen evaporator coils or premature compressor failure. Regular filter maintenance protects your investment.

Why Choose Elkhart RV Parts?

At Elkhart RV Parts, we specialize in hard-to-find Dometic replacement parts that keep your RV systems running smoothly. Located in Elkhart, Indiana — the RV Capital of the World — we understand the importance of having the right part when you need it. We stock genuine OEM Dometic components and ship fast across the United States. Our team of RV parts experts is here to help you identify the correct filter for your air conditioner and answer any installation questions. When you order from Elkhart RV Parts, you're getting authentic Dometic quality backed by knowledgeable support.

100% Authentic OEM Parts

Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

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