How to prepare HVAC for winter?

Author: Sedrick Reynolds DDS  |  Last update: Saturday, December 13, 2025

Is your heating unit keeping up with the cold this winter? Here are some tips to help get your system ready for the season:
  1. Unblock your vents. ...
  2. Check your air filter. ...
  3. Schedule a furnace tune-up. ...
  4. Inspect your thermostat. ...
  5. Fix drafts around doors and windows. ...
  6. Clean your furnace cabinet.

How to get your HVAC system ready for winter?

Checking air filters and running a heat test will help ensure your furnace is ready for winter. Cleaning the blower motor and heat exchanger can also help prepare your system for winter use. If you have a gas furnace, you may also want to test the ignitor switch and relight the pilot light.

How do I protect my HVAC in the winter?

The best way to prevent damage from snow and ice build-up is to keep the space around your unit clear. After a large snowstorm, or during if you are expecting feet of snow, you can clear a space that is at least 18 inches all around the unit. In addition, keep the top and sides of the unit uncovered.

How to prepare an AC unit for winter?

How to Prepare AC For Winter: 6 Tips
  1. Switch Off Power to Your AC Unit. To prepare AC for winter, begin by locating the power for your outdoor unit. ...
  2. Remove Debris from Your AC Unit. ...
  3. Look for Existing Damage. ...
  4. Protect Your AC Unit with a Cover. ...
  5. Cover with Foam Pipe Covers. ...
  6. Join a Maintenance Membership.

What should my HVAC be set at in winter?

The recommended temperature for a house in winter is between 68°F to 72°F (20°C to 22°C). This temperature range is considered comfortable for most people and can help maintain energy efficiency.

How to Prepare Your HVAC System for Winter | Aire Serv

Is it cheaper to leave your thermostat at one temperature?

Keeping your home at a constant temperature generally means that your HVAC system will run constantly to meet it. This means that your furnace or air conditioner may run when you're asleep, at work, or out of the house. This wastes more energy than the minimal amount that you might save by having it constantly run.

Is 72 too high for a thermostat in winter?

68 to 72 degrees is a temperature range that is not too warm or cool, and is sufficient enough to warm up the home just enough so that everyone is comfortable regardless of the type of clothing they have on.

How to properly winterize an AC unit?

5 Easy Steps to Prepare Your Air Conditioner Before Wintertime
  1. Clear the Space Around Your Air Conditioning Unit. Most Canadians count down the days until the first warm weeks of summer in their region. ...
  2. Clean the Outside of Your Air Conditioning Unit. ...
  3. Cover Your Air Conditioning Unit. ...
  4. Update Your Thermostat Setting.

Should I wrap my AC unit in the winter?

CONCLUSION. Covering your air conditioner, especially with a full-length cover, leads to issues of mold, rust, and other problems. Your unit is made to withstand the snow and a cover is not needed for protection. It is recommended to only cover your AC during the fall months.

Which mode is best for AC in winter?

The standard air conditioner's temperature should be set around 18 to 22 degrees under Heat Mode for heating in winter. This is to ensure maximum energy efficiency from your unit. The Fan speed of the AC should be kept between Low to Medium.

How cold is too cold for HVAC?

The lowest outside temperature at which to run your AC is typically around 60-65 degrees Fahrenheit. At temperatures below this range, your air conditioner might not operate efficiently, causing increased energy consumption and potential strain on the system.

How do I keep my HVAC from freezing?

6 Ways to Stop Your AC Coils from Freezing
  1. Replace the Filter Regularly. A dirty filter restricts airflow. ...
  2. Check the Thermostat. An issue with the thermostat can cause your AC to run longer or more frequently. ...
  3. Clear the Condensate Drain. ...
  4. Increase the Fan Speed. ...
  5. Keep Vents Open. ...
  6. Have a Technician Check the Refrigerant Level.

What happens if you don't cover your AC in the winter?

You don't need to cover your AC unit to protect it from the weather. Modern units easily withstand rain and snowfall. A resilient finish coats the parts inside the condenser (the AC box that sits outside your home). It needs to get airflow to allow the rain and snowfall to evaporate and keep the unit dry.

How to protect HVAC in winter?

How Do You Protect An Air Conditioner HVAC System in the Winter?
  1. Inspect the Surrounding Area. ...
  2. Prevent Icicle Damage. ...
  3. Clear Ice and Snow Buildup. ...
  4. Consider Installing a Protective System. ...
  5. Keep Air Intake Vents Clear. ...
  6. Monitor the Exhaust for Blockages. ...
  7. Invest in Seasonal HVAC Maintenance.

What is the best temperature to set your HVAC to?

10 Ideal AC Thermostat Settings
  • Ideal daytime at-home temperature 70-78°F. ...
  • Most energy-saving temperature 78°F. ...
  • Best temperature while you're away 85-88°F. ...
  • Ideal daytime at-home temperature 68°F. ...
  • Most energy-saving temperature 60-70°F. ...
  • Best temperature while you're away 55-60°F. ...
  • Ideal temperature for sleeping 66°F.

What months are HVAC slow?

In North America, the HVAC slow season is in the months from September through to March each year. This 7 month stretch can be a very tough time to get through for HVAC contractors as the need for HVAC service calls dwindles.

Where should I store my AC for winter?

“Select a location that is dry and away from very hot or cold temperatures,” says Mitchell. “A garage, cellar, or even a closet are the ideal spaces. Just stay away from sheds and attics that could get extremely damp or cold in the winter.

Should I put a tarp over my air conditioner?

Air Conditioner Covers aren't necessary for mild climates, but are still useful to keep out stray leaves, dirt, rocks, grass, and other debris. The key reason to cover your air conditioner is to keep it efficient.

How do you wrap an AC unit for the winter?

Put A Waterproof Cover On The Air Conditioner Unit

If you do not have a ready-made vinyl or plastic cover, a piece of plywood will also do. It will protect the air conditioner from falling ice, keep debris and leaves away, and, at the same time, allow the unit to breathe.

What temperature will an AC unit freeze up at?

This can be a problem during the springtime when temperature levels can rise and fall unpredictably. If your air conditioner is operating when the temperature outside is below 60 degrees, your coils have a chance of freezing over.

Do outdoor AC units need to be winterized?

There are many reasons why it's important and smart to winterize the condenser, the unit that sits outside your home. It helps prevent wear and tear caused by the winter elements. This can make it easier to start the AC back up next spring/summer and extend the service life of the unit (which saves you money).

Why does my house feel cold at 68 degrees?

There may be drafts and pockets of colder air near the floor; The walls are colder and don't emit the usual amount of infrared radiation, so you lose heat due to your body emitting more IR than it receives; You may spend more time indoors and hence have less physical activity, so your body generates less heat.

What temperature should your house be so pipes don't freeze?

In interior spaces, if pipes are near cracks or openings that let in cold air, they may develop ice blockages even if they are in a heated space. To keep your pipes from freezing and bursting, make sure they are not exposed to temperatures approaching the alert threshold of 20 degrees.

What is the cheapest temperature to keep your house in winter?

To save money, aim to have your temperature set around 68-72 degrees Fahrenheit when you're at home and awake. This is a comfortable temperature for most with the help of a light sweater. Overnight and when you're out, around 64 degrees Fahrenheit will keep your home at a good temperature.

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