A: Regular cleaning, changing air filters, and annual professional inspections can prevent many common issues and extend the life of your system.

A: Cleaning air conditioner coils involves turning off the unit, removing debris, and gently cleaning the coils with a coil cleaner or a mixture of water and mild detergent. It's crucial to follow the manufacturer's instructions for proper cleaning.

A: To turn off a water heater:

For gas heaters, set the thermostat to the "Pilot" position.

For electric heaters, turn off the circuit breaker.

A: Many HVAC contractors offer financing plans, including low-interest loans or flexible payment options. Additionally, some energy-efficient systems may qualify for government rebates or tax credits.

A: Sick building syndrome refers to a situation where occupants experience acute health effects linked to time spent in a building with poor air quality.