It wouldn’t make sense to try to drive your car without a steering wheel. There would be no way to control it, let alone direct the heading it would go. The same idea can be applied to your HVAC system: without the thermostat, you can’t tell your air conditioner when to turn on, how long to run, or what temperature you are shooting for.
Your thermostat is vital to your home comfort. That is why it is important to upgrade yours if the old one is no longer able to do its job properly. Even if the thermostat is still working, it may not read temperatures correctly, which will harm your comfort. Older thermostats or thermostats that have become defunct are going to need to be upgraded. We can help with this.