Plumbing $5,000, water heater $300. installation $200 sink,stove, $4,000 around $10 to 15 thousand if your handy you can save a lot on labor except water heater if it gas , electric you can install any gas & electric has to be done by a lic plumber or electrician plus don,t for get indiana,s sales tax remodeling permit,s got to feed those grubby politicians,
1. Is a hissing sound from my water heater dangerous?
Could be, it would worry me. It may be from a leaking 'Pressure-Temperature-Relief Valve', that could be leaking improperly, or correctly releasing. Your water heater should not be boiling. Turn it down, or off
2. CAN A MAIN BREAKER BE INSTALLED WITHOUT HAVING TO REPLACE THE PANEL BOX?
The easy way is to clear 2 spaces for a 2 pole 100 amp breaker (I assume you have a 100 amp service if it's 200 amps you would have to do some serious modification that the box is probably too small for) Anyways, put a 2 pole 100 amp breaker onto the buss bar at the top left. Move some circuits around to make it happen. Then pull the meter to kill the power, and remove the feeds from the main lugs and put them into the breaker lugs. It will back feed through the breaker into the buss bar feeding the other breaker, and work like a main breaker. Okay, now it would help if you specify what panel you have, or take a picture, then I can give you more options. Many panels are made to be for main panels and sub panels. So if you have a main lug only version of one of these panels, you can purchase a main breaker kit that mounts above the buss bar and attaches in place of those lugs to turn it into a main panel. Now if you have an older split buss panel where the lower half is branch circuits feeding from a breaker in the upper half which is unfused and used for appliances like water heater and stove. Out of curiosity though, why are you concerned with this? Why do you need a main breaker? You certainly can kill the power to the house by flipping all the breakers off which can be done relatively quickly and easily. Are you afraid to work in a live box and tried to add a circuit in but could not kill the main? It's really not so bad getting shocked... you just want to avoid it passing over your heart by having one hand grounded and the other touching a live wire. But even then, the body is such a poor conductor, and 120 is fairly mild, it wo not latch on. You just shake for a second and let go. Anyways, It's really not hard to avoid getting shocked while working in a live panel. Been doing it for a decade now. Probably been shocked a hundred times or more though, generally speaking. Mostly while wiring up devices to hot wires and getting careless. Makes you tingle for a while. Nothing to be afraid of though. Still got all the feeling and functionality in my hands and arms. It's really not advisable for you to be working in an electrical panel in the first place though. Not without some instruction about wire sizing, torque specs, bonding, ampacity, and general safety standards. You do not want to inadvertently create a degrading situation that can lead to a fire or damage to electronics 2 weeks down the road.
3. If I have 2 (visible) burst copper pipes from the water heater, is it likely more are burst?
Mostly this will happen in over pressure boiler and the pressure relief valve is not properly working.Is you water heater has a separate tank? if so, then i could say the copper pipe was so thin to hold the pressure of hot water and if you fix the area where it burst? it will solve the problem 100 % in that area but no guarantee that the problem will not happen again in other area.To avoid this to happen try to set the valve into halfway open from fully open and check also the pressure relief valve if it it's properly working maybe not.The copper pipe can usually hold the steady water pressure 30 psi and the relief valve release the pressure when it reach more than 30 psi.So, good luck check the item i said. Owss...maybe the said relief valve i mention is not so familiar here it goes how looks like....from the water heater tank before you reach to the top of the tank check the side approximately 10" bellow from the top there's a brass thing with a liver on it that's the pressure release valve pull that liver slowly but make it sure Youre body or foot away from the water exit otherwise you will be burn by the hot water .Just be care full..Good Luck