New Water Heater Installation At Home

We're preparing a new bathroom for my grandchildren. They regularly visit us and stays for the weekend. They'll be using their mom's old bedroom. We've asked a contractor for a new Water Heater installation. The old one doesn't work anymore. They're only months old and really needs warm water when they bathe. No problem when it's summer, the water's hot. It's the cold months that concern us. They'll be using one of the guestrooms until their own bedroom is ready. Their mom and dad are overseeing the reconstruction of the room. We're all excited and we hope that the room will be finished on time.