We moved into a new (to us) trailer last year. Although it is quite recent, the lighting was terrible. DH put in LED lighting almost everywhere. I love it. I also love our power bills. Even with lots of medical equipment for both of us, air filters in every room, and lots of AC, our bill last month was $41. DH points out that 7 watts of power gives the equivalent of 150 watts of incandescent light. DH was a lighting tech for ABC News. He knows his stuff. It does cost to make the transition, but I love the results. DH figured that the cost of all the new lighting pays for itself in 3-5 years. It would be shorter with more expensive power.