Do you need help finding the best Heating and Cooling Companies in San Diego, CA? LocalSpark® has identified the best HVAC companies near San Diego, CA. Maintaining your home or business’ HVAC system is essential. Scheduling seasonal heating and cooling repairs can improve efficiency and lower monthly HVAC bills. Looking for the best HVAC companies in San Diego, CA, can be difficult. It can be helpful to look at past reviews of an HVAC provider’s experience and services. LocalSpark® has done the legwork and has listed the best Heating and Cooling Companies in San Diego, CA.