Clovis HVAC Heating Ventilation Air Conditioning Clovis CALL (250) 575-7258 We are the best HVAC service in Clovis, California. Contact us today for a free estimate! Looking for an efficient way to cool your home? Consider installing a whole-house evaporative cooler. They use water to cool air instead of traditional chemical coolants, using a ton less energy to cool your home than those other units. That said, they do work best in dry climates and not at all in humid ones.