Preparing Your HVAC System for a Summer Heat Wave

Massachusetts and Southern New Hampshire summers can bring stretches of extreme heat that put additional strain on your air conditioning system. Taking a few preventive steps before temperatures soar can improve comfort, efficiency, and reliability.

Replace Your Air Filter

A dirty air filter reduces airflow, forcing your system to work harder.

Before a heat wave arrives:

• Inspect your filter.
• Replace it if it’s dirty.
• Follow manufacturer recommendations for replacement intervals.

Proper airflow is essential for efficient cooling.

Check Your Thermostat Settings

Setting your thermostat appropriately can reduce strain on your system.

Many homeowners find that maintaining a consistent temperature is more efficient than making large daily adjustments. Smart thermostats can also help optimize energy usage.

Clean Around the Outdoor Unit

Your condenser needs adequate airflow to operate efficiently.

Remove:

• Leaves
• Grass clippings
• Weeds
• Debris

Maintain several feet of clearance around the unit whenever possible.

Inspect Air Vents

Ensure supply and return vents are:

• Open
• Unblocked
• Free from dust buildup

Blocked vents can reduce cooling performance and increase energy consumption.

Schedule Preventive Maintenance

Professional maintenance is one of the best ways to prepare for extreme temperatures.

A tune-up may include:

• Checking refrigerant levels
• Cleaning coils
• Inspecting electrical components
• Testing system performance

Identifying problems early can help prevent costly breakdowns during the hottest days of summer.

Stay Ahead of the Heat

Preparing your HVAC system before a heat wave arrives can improve comfort, lower energy costs, and reduce the likelihood of unexpected repairs when you need cooling most.