We bought a 40 year old house - and needed all new windows and doors.
Gradually replaced them all over 2 years. Home castle came is with the best estimate, so we went with them. They were accomodating with our 2 year repalcements. We stated with the doors as we could feel the wind coming thru - we started in Jan in fact. What a difference in the whole house; not just energy wise, but brightness too from the new windows. Great service, friendly and efficient!