Spring Heat Pump Maintenance Checklist

Spring is the ideal time to prepare your heat pump for cooling season, after months of heavy use through winter — months during which the unit accumulated dust, potentially suffered freeze-thaw-related damage, and probably received zero attention since the previous fall.

What you can do yourself

• Clean or replace the air filter — a clogged filter reduces efficiency and forces the system to work harder for the same output, one of the most common and easiest-to-fix causes of a high electricity bill
• Clear the outdoor unit — remove leaves, debris, and branches that accumulated over winter, keeping at least 30 cm of clearance on all sides for proper airflow
• Check that the unit is level — winter freeze-thaw cycles can slightly shift or tilt the base, which affects drainage and long-term mechanical wear
• Visually inspect the fins — look for any visible damage from ice, snow blower discharge, or weather in general
• Clean the indoor vents — dust the grilles on wall-mounted units, where accumulated dust reduces airflow just as much as a clogged filter

What needs a technician

• Refrigerant level check — requires specialized equipment to measure pressure, a task no consumer-grade tool can replace
• Electrical inspection — connections, capacitors, relays, common failure points that often show no visible sign before a complete breakdown
• Deep coil cleaning — a dirty coil, invisible without disassembly, noticeably reduces efficiency even when the filter is clean
• Defrost and cooling cycle test — confirms both modes work correctly before you actually need them
• Drainage check — making sure condensate drains properly, particularly important after a winter where the drain may have partially clogged

Recommended frequency

Why not to skip this

Regular spring maintenance extends the unit's lifespan, keeps energy efficiency at expected levels, and often catches a minor issue — a weakening capacitor, a small refrigerant leak — before it becomes an expensive breakdown in the middle of a heat wave, exactly when getting an emergency appointment is hardest and discomfort is highest.