Description
Thermal Solutions 81156012 Air Filter | Evolution Series EV-2000 / EV-2000S
Product Overview
The Thermal Solutions 81156012 Air Filter is a genuine OEM replacement engineered for Evolution Series EV-2000 and EV-2000S boilers and water heaters. Built with a durable heavy paper filter core and a poly pre-filter, this model maintains clean, consistent combustion airflow to support safe, efficient burner operation.
Designed specifically for high-efficiency Evolution systems, the 81156012 ensures proper airflow resistance, stable ignition performance, and sustained energy efficiency. It fits a wide range of Evolution models, including EV, EVA, EVAW, EVS, EVSW, EVO, and EVOW variants.
Features & Benefits
- Heavy-duty paper filter with poly pre-filter for long service life.
- OEM replacement ensures proper fit and airflow performance.
- Helps maintain clean combustion air for efficient burner operation.
- Supports energy efficiency and reliable ignition.
- Easy to replace during routine maintenance.
Specifications
- Part Number: 81156012
- Compatible Models: EV-2000, EV-2000S, EVA-2000, EVA-2000S, EVAW-2000, EVAW-2000S, EVS-2000, EVSW-2000, EVO-2000, EVOW-2000
- Diameter with foam: 14-1/8″
- Outside diameter without foam: 13-5/8″
- Inside diameter: 7-15/16″
- Thickness with foam: 9-5/8″
- Thickness without foam: 9-5/16″
- Construction: Heavy paper media with poly pre-filter
Installation Tips
- Verify model compatibility before installation.
- Replace filter during regular boiler service intervals.
- Ensure the foam sealing ring seats properly to prevent air bypass.
- Inspect blower intake for dust or debris prior to installing the new filter.
- Never operate the boiler without a functioning air filter.
FAQs
- What is the function of this air filter?
It maintains clean combustion airflow to support efficient, safe boiler operation. - Which boilers does this filter fit?
All Evolution 2000 series boiler and water heater models. - How often should it be replaced?
At annual service or more often in dusty environments. - Is this an OEM Thermal Solutions filter?
Yes, it is a genuine OEM replacement. - Can the boiler run without this filter?
No—doing so may damage the combustion system and reduce efficiency.






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