How much does it save me, compared with other methods?
Compared to other water heating methods heat pump technology can heat up your hot water cylinder for up to 70% less costs than an electric or a fossil fuel hot water cylinder. Heat pump technology works day and night, in all seasons and in all weather conditions.
Check out these comparisons below for the total costs (purchase and power use) for most common used water heating methods. Based on 1, 2, 3, 4, 5, 6, 7 and 12 showers per day, over a lifetime of 10 years.
The upfront costs are the cost to purchase the system and the normal basic installation costs. Source: www.EECA.govt.nz.
Comparison: 1 shower per day
As with all energy saving appliances goes ‘the more you use, the more you save’. So when you are not using a lot of warm water, you are not saving a lot.
As you can see it takes about 8 years to break-even when you retrofit your existing hot water cylinder. However when you have to replace a faulty system or when you are building new, the break-even point is much earlier at just over 4 years.
Comparison: 2 showers per day
With two showers per day the break-even point for a retrofit is still a long wait ( 5.5 to 6 years). The break-even point of 3 years when you have to replace your faulty system or when you are new building is becoming worth a thought.
Comparison: 3 showers per day
With three showers per day it becomes interesting to retrofit your existing system as the break-even time is just over 4 years. The ‘faulty system replacement’ or new install break-even time is about 2.5 years.
Comparison: 4 showers per day
With four showers per day it becomes a ‘no-brainer’. The retrofit break-even time is about 3.5 years and the ‘faulty system replacement’ or new install break-even time is about two years.
Comparison: 5 showers per day
With five showers or more a day it is a ‘no brainer’. The retrofit time is under 3 years and the ‘faulty system replacement’ or new install break-even time is under 1.5 years.
Comparisons: 6,7 &12 showers per day