Dometic Rooftop AC Air Filter - Polyester 18x18 - Fits AT30/AT36 - Part# 235000930

DometicSKU: 235000930
Added to catalog: March 10, 2026
Last product update: June 6, 2026 at 12:00 PM

Sale price$281.48 Regular price$447.55
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Keep your Dometic rooftop air conditioner running efficiently with this genuine OEM polyester air filter. Designed specifically for AT30 and AT36 units, this 18x18 filter captures dust, pollen, and debris before they reach your cooling system, maintaining optimal airflow and extending AC lifespan.

  • Genuine Dometic OEM replacement filter
  • 18x18 inch polyester media for superior dust capture
  • Direct fit for Dometic AT30 and AT36 rooftop AC units
  • Easy to install without tools
  • Recommended annual replacement for peak performance
  • Prevents dust buildup that reduces cooling efficiency
Specification Details
Part Number 235000930
Filter Size 18 x 18 inches
Material Polyester
Compatible Models Dometic AT30, AT36
Type Rooftop AC Air Filter
Replacement Interval Annually or as needed

Frequently Asked Questions

Q: How often should I replace this filter?
A: We recommend replacing your rooftop AC filter annually or more frequently if you travel in dusty conditions. A clogged filter reduces cooling efficiency and strains your AC unit.

Q: Will this filter fit my AT30 or AT36 unit?
A: Yes, this is the genuine OEM filter designed specifically for Dometic AT30 and AT36 rooftop air conditioners. It fits directly into the original filter housing.

Q: Is installation difficult?
A: No, this filter installs easily without special tools. Simply access your rooftop AC unit, remove the old filter, and slide the new one into place.

Why Elkhart RV Parts: We specialize in hard-to-find Dometic replacement parts and ship from Elkhart, Indiana—the RV capital of the world. Every part is genuine OEM with expert support to help you get the exact component you need.

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 Genuine, name-brand components made to order — never generic, never outdated.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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