Which hot water system
First Question- are you replacing existing hot water system due to age, leaking and just not working anymore, or are you installing a new system to am new build?
If you are replacing an existing hot water system, your existing hot water system will probably be one for 4 types. Which Hot water system is your?
- Heat pump
Now replacing “like 4 like” is nearly always the cheapest install option, so if you pull out an old 250lt electric unit and replace with 250lt electric, the plumber old has to update to current standards and if hes a good plumber replace all the valves.
However if you want to change the “fuel type” so now your pulling out the old electric hot water system and installing a Gas system, or Solar system, you also have to consider the additional cost of the extra plumbing, Gas and electrical changes, and may have to relocate the hot water system altogether and move outside.
Now your options for hot water systems are unlimited are you don’t have to consider existing Plumbing, gas electrical as this can all be installed ‘roughin’ to your design, whether you chose electric, Gas or Solar. install outside or inside (if climate permits) ie in colder climates if freezing is possible during winter months you need to avoid installing any plumbing outside to prevent damage due to freezing and splitting the unit.