Where would the return on an air conditioning system be located?

The return for an air conditioning system is typically placed close to the thermostat. This location allows the system to efficiently gauge the ambient temperature of the space it is meant to cool or heat. When the return air is positioned near the thermostat, it facilitates a more accurate reading of the temperature, which helps in maintaining a consistent and comfortable environment.

This placement is crucial for the effective operation of the HVAC system, as it ensures that the air circulating back into the system is representative of the overall room temperature. This accuracy ultimately contributes to better energy efficiency and comfort in the space.

The other options may not provide the same level of efficiency or accuracy. Venting outside can cause the system to pull in unconditioned air, which may not reflect the desired indoor temperature. Being more than 6 feet from a water heater can be a code requirement but does not directly relate to the return’s performance. Venting near the unit might not effectively monitor the overall temperature, as it could pick up localized conditions rather than the air temperature in the entire space.