Depends how much plumbers charge in Seattle. -It takes about 3 hours to install a gas tank if it's a straightforward installation and no other pipes or obstacles are in the way. (I do many)
Labor alone for a residential boiler would be around $800 while a water heater would be around $210-$300. These are typical rates for Connecticut anyway.
A tankless water heater is much more efficient as it "flash" heats the water.
Tankless water heater installation costs around $1200. But, they save money each year in energy costs, so, it is possible to recoup the money over time.
Most hot water heaters will develop small leaks around the welds in 10-12 years. Heaters are made of much thinner, cheaper material than they used to be. -The actual wall thickness of a typical water heater today is 1/16 inch, and no interior protection against rusting.
This depends on what material the plumber uses, what fittings the plumber uses, how much piping will be used and how long the plumber will take.
The installation of a solar water heater will cost between $250-500.
I doubt the gas company will install a water heater. Too much liability.
To replace the circulating pump it will cost between $150 and $300 depending on the hot water heater. It will also cost you labor fees if you have someone install it for you.
Labor alone for a residential boiler would be around $800 while a water heater would be around $210-$300. These are typical rates for Connecticut anyway.
Install a bigger water heater. This would only be efficient if you had a constant need for an increased volume and could bear the added cost of installing, operating and maintaining a larger heater. Or increase the temperature on the water heater so you use less to get warm water. This also has its practical limits, where water could be delivered to the faucet at a dangerous temperature (over 130 F), unless properly controlled. Or install another water heater in parallel, giving you twice as much hot water before it starts getting cool. Larger facilities may have three or more heaters in parallel and another one in series for pre-heating the supply to the others.
like 2 hours
A tankless water heater is much more efficient as it "flash" heats the water.
Not much actually,a Mobile Home water Heater has the water connections going into the side where as a Regular Water Heater has the connections at the top. So if you have enough room above a mobile home water heater you can install a regular water heater no problem.However a lot of mobile homes do not have room above the water heater so your forced to use a Mobile Home water heater instead. Which usually costs about a hundred more than a regular one.
None.
You constantly need hot water
It depends on what is broken on your water heater, as to how much it would cost to fix it. It might actually need to be replaced and be more cost effective to replace it.
Not much, it gets warm as everything else within the heater's range.