Remember the 60-second rule: That’s all the time you have to create a winning first impression.
A roof is a big ticket item and one that buyers really don't want to see falling apart when purchasing a new home. Buyers will pay more for a home that has a maintenance free roof for the forseeable future.
Your home's major systems, such as heating, will bring a ton of value if buyers have peace of mind they won't need to worry about it or pay for it any time in the near future.
A new or updated electrical panel and wiring will have buyers paying more. Safety is always a factor and people want to make sure that their huge investment is also a safe place to live.