Quality, Experience, and Dependability. The core foundation of R&D Heating, Cooling & Electric and everything we do. Using only the highest standard of products, R&D Heating, Cooling & Electric provides complete residential and commercial system services from repair, maintenance, to new system installation. With over 30 years and Four Generations of experience, thousands of residential and commercial clients throughout PA, NJ, and DE, we have gained our clients trust and loyalty year after year. Our promise to all of our clients is to fix the problem right the first time, save you money, and guarantee our work in writing. We invite you to Discover the R&D Difference!