Why Cleaning Refrigerator Coils Matters More in Ontario
Ontario homes run refrigerators year-round in an environment that makes condenser coil maintenance particularly relevant: forced-air heating systems that operate from October through April distribute fine dust particles throughout the home continuously, and this dust accumulates on refrigerator condenser coils faster in Ontario than in climates with less heating-season duration. Clogged condenser coils force the compressor to work harder to dissipate heat, which increases electricity consumption (typically 10–25% more energy with heavily clogged coils), shortens compressor lifespan, and in extreme cases causes the compressor to overheat and fail prematurely — a repair that often costs more than replacement of an older unit. Cleaning the coils once a year (twice if you have pets, whose hair is particularly effective at clogging coil fins) is one of the highest-return appliance maintenance tasks in the home.
Locating the Condenser Coils
On most refrigerators sold in the past 25 years, the condenser coils are located at the bottom rear of the unit, accessible through the lower front grille (a removable kick plate at the base of the refrigerator, typically held by friction clips). Some older refrigerators have coils mounted on the exterior of the back panel — these are the black, grid-like tubes visible when you pull the fridge away from the wall. A few models have coils built into the walls of the unit (no-coil models) — these don't require cleaning.
What You Need
- Refrigerator coil brush — a long, flexible brush designed to reach between coil fins (available at hardware stores for $8–15)
- Vacuum cleaner with crevice and brush attachments
- Flashlight
- Microfibre cloth
Step-by-Step: Cleaning the Coils
Step 1 — Unplug the refrigerator
Always unplug before working near the coils or the compressor motor. The compressor and fan motor in this area carry line voltage.
Step 2 — Remove the access grille
For bottom-front access models: the kick plate at the base of the refrigerator typically pulls forward and off. Use a flashlight to locate the coils — they appear as a series of parallel fins mounted on tubing, often covered in a thick mat of grey dust and, in pet households, a dense felt of pet hair.
Step 3 — Brush the coils
Insert the coil brush into the coil area and work it back and forth to dislodge accumulated dust from between the fins. Work systematically across the full width of the coil assembly. This loosens material that vacuum suction alone can't reach between the fins.
Step 4 — Vacuum
Use the crevice tool and brush attachment to vacuum the loosened dust and debris from the coil area, the floor beneath the coils, and the fan blade (accessible in the same area — the condenser fan circulates air through the coils). Vacuum the floor area visible through the grille opening.
Step 5 — Pull the fridge from the wall
For rear-coil models, and as part of annual maintenance for any model: pull the refrigerator away from the wall (unplugged), vacuum the rear coil panel and the floor area beneath the fridge, and wipe down the rear panel with a dry microfibre cloth. This also allows cleaning of the wall and floor area behind the refrigerator — an area that is never cleaned otherwise and accumulates significant debris.
Step 6 — Replace grille, push fridge back, plug in
Ensure the fridge is pushed back to within 1–2 inches of the wall (closer reduces air circulation around the compressor) and the floor is level under all four feet (use the adjustable levelling feet if the fridge rocks).
How Often to Clean
- Annually — minimum for all households
- Every 6 months — households with cats or dogs whose hair clogs coils rapidly
- Spring cleaning — good timing after Ontario's long heating season has deposited maximum dust
Professional Cleaning Includes Coil Cleaning
Our deep clean service includes pulling the refrigerator from the wall and cleaning the coil and floor area behind it — one of the tasks most commonly skipped in DIY cleaning. Book at maidless.ca/ontario. HST included, all supplies provided.