Air Conditioning and Heating Systems We understand that no other single system in your home plays a larger role in your comfort or how much your utility bill will be than your air conditioning and heating system. The North Carolina Alternative Energy Corp. found that 90% of all heating and cooling units tested exhibited some sort of energy wasting problem. They also found that 50% of the units tested had an improper refrigerant charge. Texas A & M university found that a 23% refrigerant undercharge could result in a 52% efficiency loss. That’s why we specialize in comfortable, cost-effective heating and cooling systems, including heat pumps and geothermal systems. We also provide annual maintenance contracts and assess your heating and cooling system to evaluate its energy efficiency.  Ray & Son always offers competitive, affordable financing options for equipment installation.