Heat or AC won’t kick on? Let’s be real: you’re not alone in that panic when the house suddenly feels too chilly (or way too hot!). But before you start worrying about costly repairs, here’s a quick honest tip from your Accu-Temp neighbors: Check the light switch near your furnace. It looks just like a regular light switch, but it actually controls power to your whole heating and cooling system. If it’s accidentally flipped off (it happens!), your system won’t run: no matter how you set the thermostat. Give that switch a look before you call us for help. Honest troubleshooting, no upselling, just straightforward answers for Central Texas homeowners. If everything checks out but you’re still stuck, give us a shout!