The seasons don’t always switch on schedule, especially here in the desert, where the summer heat seems to linger well into fall. But sooner or later, the crispness in the air will remind you that it’s time for an HVAC seasonal transition. Knowing when to make the switch from cooling to heating is key for comfort, efficiency, and avoiding those “uh-oh, it’s freezing in here!” moments. 

When exactly should you flip the thermostat from cool to heat? Here are some clear signs it’s time to start switching HVAC modes and prep your home for the upcoming cozy season.

The Forecast Is Showing Signs 

Sure, every year has its quirks, but there’s a pretty reliable window when the HVAC seasonal transition starts to make sense. For most homeowners, that’s somewhere between late September and mid-October. So how do you know when it’s time to start switching HVAC modes? The key is to keep an eye on the weather app on your phone. When forecasts start to show a stretch of days with highs hanging out in the 60s and overnight lows dipping into the 50s, it’s a good indication to start prepping for the heating season.

Our biggest pro tip? Don’t try to wait it out until you’re shivering on the couch to make the transition finally. Being proactive about switching HVAC modes not only keeps you cozy, but it also gives you time to catch any issues with your system before you really need it.

Your Energy Bills Are Dropping Hints 

Your utility bill is basically a monthly progress report on how your home’s comfort systems are doing. If your AC isn’t kicking on nearly as much as it did a few weeks ago, or if you’ve nudged the thermostat up just to avoid running it, that’s your AC’s way of saying, “I think my season is over,” and a solid clue it’s time to start switching HVAC modes. That’s one clue that it’s time for an HVAC seasonal transition.

As you’re switching HVAC modes, it is also a great moment to think about your system’s overall efficiency and if it’s been performing as expected. If it seems to struggle to deliver your ideal comfort during these in-between months, you might want to explore a high-efficiency upgrade that can handle both heating and cooling with less effort (and less strain on your wallet). 

Comfort Starts to Feel Uneven 

Another giveaway is temperature inconsistencies—i.e., one room is hot while another feels chilly. This is usually a sign that your cooling system just isn’t the right fit for the season anymore. When your home feels stuffy or stagnant even though your AC is running, it’s because the outdoor air doesn’t really call for heavy cooling. That’s the perfect cue to shift gears, put a few heating readiness tips into play, and let your system prep for the HVAC seasonal transition.

Heating Readiness Tips for a Smooth Transition 

Before you go all-in on heating mode, a little prep can go a long way. Think of it as giving your home a little tune-up for the season so everything runs smoothly when temperatures dip. Here are some heating readiness tips as you prepare for the HVAC seasonal transition: 

• Let the sun do some work. Pull back the curtains on south-facing windows so natural sunlight can warm your space and give your furnace a break. 
• Give your heat a test drive. Switch it on for a short run before you actually need to be switching HVAC modes. If you notice odd smells, strange noises, or sluggish performance, you’ll have time to fix it without freezing. 
• Swap in a fresh air filter. A clean filter improves airflow, boosts efficiency, and keeps your indoor air fresher. It’s a simple step that’s so important to do regularly.
• Seal the leaks. Check windows and doors for drafts to ensure no heated air will escape outside. A little weatherstripping can make a big difference.
• Add insulation where it counts. Your attic and basement are often the biggest culprits for heat loss. A quick insulation upgrade can help lock in more warmth. 
• Clear your vents and outdoor unit. Indoors, make sure vents aren’t hidden behind furniture. Outdoors, clear away leaves, weeds, or debris from your HVAC unit so it can breathe. 
• Get professional maintenance. Just like your AC before summer, your furnace deserves a once-over before winter. A professional check ensures everything’s safe and efficient. 
• Use your ceiling fans. Set your fans to rotate clockwise on low. This gently pushes warm air back down where you want it.

Time to Cozy Up with Silver State 

Transitioning from cooling to heating doesn’t have to be a guessing game. Watch for the signs, follow these tips, and trust that your HVAC system will keep you comfortable through every season. And if your furnace test run leaves you with questions (or worse, no heat), Silver State’s expert HVAC technicians are here 24/7 to help. 
Whether it’s regular maintenance, a repair, or even a system upgrade, we’ll make sure your home is ready for cooler weather. After all, nothing says “fall” quite like a warm, cozy house. Contact us today to book your appointment.