Getting Your Heat Ready for a Phoenix Valley Winter

Simple checks for furnaces and heat pumps before the first cold nights, and when to call an HVAC pro.

Why it matters here

Most Phoenix Valley homes run the heat only a few weeks a year, so dust, dead thermostat batteries, or a dirty filter often go unnoticed until the first cold night.

Know which system you have

Many local homes use a heat pump, which is the same outdoor unit that cools in summer running in reverse. Others have a gas or electric furnace. Your owner's manual or the label on the indoor unit will tell you.

Easy checks you can do

Replace or clean the air filter. Put fresh batteries in the thermostat and switch it to heat. Clear anything stored around the indoor unit and keep the outdoor unit free of leaves and debris. Make sure supply and return vents are open and unblocked.

First-run smells and sounds

A brief dusty smell the first time the heat runs is common. A persistent burning smell, a gas smell, loud banging, or a breaker that keeps tripping is not. If you smell gas, leave the home and call your gas utility from outside.

Carbon monoxide safety

If you have any gas appliances, test your carbon monoxide alarms and replace batteries as needed.

When to call a pro

Call an HVAC company if the system blows cold air on heat, short-cycles, makes new noises, or has not been serviced in a few years. Ask whether a tune-up covers both heating and cooling.

This guide is general information, not professional advice. For your situation, consult a qualified professional.