Our business hours are 24 hours/ 7 days. More about us: nassau's #1 choice in air conditioning & heating, dependable, trustworthy, preventative maintenance, oil & gas forced air & hydronic systems, refrigeration and duct cleaning & video inspection. Our products and services include air conditioning service and construction. We specialize in air conditioning systems. Accepted forms of payment are all major cards, all major cards accepted, american express, mastercard and visa.