Skylights compromise energy efficiency. Conventional skylights were plagued by flaws that allowed heat gain in summer and heat loss in winter. Both would force the HVAC system to work harder to maintain a comfortable temperature. Solatube sidesteps those issues with products engineered for optimal thermal performance. Indeed, select Solatube systems are rated by Energy Star for their ability to deliver daylight without upsetting the temperature of the home. With Solatube, you can actually achieve lower bills by cutting the cost of daytime lighting altogether. The savings add up!