For the past 30 years, 4 Points A/C & Heating has been the leader in AC installation in Fontana, CA. We offer high-quality HVAC services with an emphasis on customer service. Our professional team is NATE-certified and have experiences with air conditioner installation in both single-family homes and large scale residential buildings. With summer approaching, proper AC in your home is a must. By improving the quality of air circulation in your home, you can save both time and money.