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For homeowners with Coleman Evcon furnaces, finding and replacing the filter is essential for efficient operation and clean indoor air. Filter location can vary by model and installation, so knowing where to look saves time and prevents airflow problems. This guide explains typical filter locations on Coleman Evcon furnaces, how to identify the correct size, and step-by-step replacement instructions. With clear directions and practical tips, users can maintain comfort, energy efficiency, and prolong the life of their system.

Identifying The Filter Type In Coleman Evcon Furnaces

Filter type in Coleman Evcon systems depends on the unit’s age and configuration. Most residential Evcon furnaces use disposable pleated filters ranging from 1 inch to 4 inches thick. The most common size in older installations is a 1-inch filter, while newer or higher-efficiency setups may use 2-inch or 4-inch filters in the return duct or blower compartment. To determine the correct size, inspect the existing filter or check the furnace label for the model’s recommended filter. The size is usually printed on the frame edge, often beside an airflow arrow.

• Purpose: captures dust, pollen, and particulates before air reaches the blower.
• Common thickness: 1 inch is typical; 2 or 4 inches may appear in higher-efficiency setups.

Common Filter Locations For Coleman Evcon Models

Filter placement is often behind a return air grille or within a dedicated panel in the furnace cabinet. Locations to check first include:

• Return air slot behind the front lower panel: Many Evcon units have a small access slot or panel in the lower front that slides out for filter access. Open the panel and slide the filter out.
• Blower compartment access panel: Some models place the filter inside the blower area, accessible by removing a side or bottom panel. This may require loosening screws or releasing a latch.
• Return air duct or filter rack in the plenum: A few installations position the filter at the return plenum where the ductwork meets the furnace.

In all cases, ensure the furnace is powered off before touching any panels. If the filter is not easily accessible, consult the owner’s manual for model-specific instructions or contact a qualified technician.

Step-By-Step Guide To Locate And Replace The Filter

1. Turn off power to the furnace at the switch or circuit breaker to prevent accidental starting during maintenance.
2. Identify the return path by locating the large duct that brings air back to the furnace from living spaces.
3. Access the filter by removing the front grille or the blower access panel as required by the model. Some panels are held with screws, others with latches.
4. Remove the old filter and note its size. Check for accumulated dust, lint, and debris on the filter and in the surrounding area.
5. Measure or verify size if the size label is unreadable. Choose a replacement with the same width, height, and depth, matching the model’s specifications (1-inch, 2-inch, or 4-inch).
6. Install the new filter with the arrows on the frame pointing toward the blower to indicate the direction of airflow.
7. Reassemble panels and restore power. Run the system briefly to ensure proper airflow and no unusual noises.

Choosing The Right Filter For Your Coleman Evcon

The correct filter balances filtration with airflow. For general household use, a MERV rating 8 to 11 provides solid particle capture without overly restricting airflow. Avoid filters that are too dense for the unit, as they can impede airflow and stress the blower. If there are allergies, pets, or higher air quality needs, consider a higher-efficiency filter only after confirming the furnace can handle the increased resistance.

Typical sizes for Coleman Evcon systems include 16x20x1, 16x25x1, 20x25x1, and 20x25x2, though sizes vary by model. Always measure the existing filter and follow the unit’s label. Ensure the frame fits snugly so it can be removed without forcing.

Maintenance Tips And Troubleshooting

Regular maintenance improves efficiency and comfort. Check the filter every 1 to 3 months, depending on usage, pets, and environmental factors. Signs that a filter needs replacement include reduced airflow, uneven heating, and higher energy bills. If the filter location is hard to access, consult the manual or a licensed HVAC technician. Keep spare filters on hand and clearly label each size for quick, accurate replacements. Periodically inspect the return air pathway for obstructions that could affect airflow.