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How much does a heat pump water heater cost? 2025 Guide

Cost Analysis

We'll use the UK as an example, a European country. Here, the average price of a heat pump water heater ranges from £8,750 to £12,500.

They are less expensive compared to regular heat pumps.This is because they only provide hot water to meet your needs.They do not provide hot water for central heating.

The table below illustrates the cost of heat pump water heaters on a household scale.It also provides approximate minimum, maximum, and average costs:

Family sizeLowest costHighest costAverage cost
Two-bedroom small bungalow£7450£8900£8250
2-3 bedroom terrace houses£7950£9700£9450
2-3 bedroom semi-detached house£8950c10925£10615
3-4 bed detached house£10650£14500£12900

Single unit

Prices for heat pump water heaters are typically listed in the quote.If you only consider the unit cost, you might need to pay between £1950 and £3500.You'll also need an air source inverter, which costs between £2950 and £6500.

Installation Costs

The average installation cost for a heat pump water heater is between £8750 and £12500.This includes unit costs (supply) and labor.

Plumbers typically charge between £250 and £375 per day for this type of work. Installation usually takes 1 to 3 days.

What Factors Affect Price?

The price of a heat pump water heater depends on several factors.Some of the more prominent examples include:

1. SIze

Size is an important consideration in the price of a heat pump water heater. It refers to the capacity and volume of water it can handle (in liters).

The larger the system capacity, the higher the cost. Generally, larger homes with more bathrooms require larger sizes. The aim is to meet the heating needs of the household.

2. Efficiency

Higher efficiency heat pump water heaters (such as those with higher COP) are likely to be more expensive.This means they typically require a higher initial investment than traditional water heaters.

However, these efficiency-enhancing models often include advanced features, components, and technologies. This may lead to increased upfront costs, but it can also result in long-term savings.

3. Installation Complexity

The cost of a heat pump water heater also depends on the complexity of its installation.

Installing such a system typically takes 1 to 3 days. This depends on the complexity of the design and planning process. A minimum of 28.3 cubic meters of open space around the unit is essential.

4. Location

Location is also a factor affecting the cost of a heat pump water heater. As you can see, this type of unit must be installed in an area with excess heat. That is, it can be a boiler room.

You may need to update the inlet and outlet pipes. The location of your usual pipes usually determines this, which can increase your expenses.

Hidden Costs to Consider

There may be hidden costs associated with installing and operating a heat pump water heater.These include:

Electrical Upgrades

You may be replacing your electric water heater with such a unit.In that case, you already have the necessary setup.You may be considering replacing your gas water heater with a heat pump one. In this case, you'll likely need to hire an electrician for an electrical upgrade.

Additionally, your plumber will need some materials and tools for installing a heat pump water heater.The quantity and cost of these materials and tools depend on your home and the complexity of the installation.

Maintenance

Similar to air heat pumps, heat pump water heaters require some maintenance.This is to ensure they function optimally throughout their lifespan.This may require additional expenses and occasional checks.Doing so helps avoid incurring additional repair costs.

Old Equipment Disposal

Some plumbers may charge a small fee to remove and dispose of old water heaters.However, many plumbers do these jobs for free.

Long-Term Savings

Heat pump water heaters can offer significant long-term savings, especially if you're switching from a gas or electric water heater.

Energy Savings

Heat pump water heaters are three times more efficient than electric water heaters. Therefore, they consume three times the electricity.

A heat pump water heater costs approximately £140 per year to operate.This is for a UK household. In comparison, an electric water heater costs approximately £420 per year.

You can switch from a gas water heater to a heat pump water heater.In this case, your operating costs may increase slightly.This is because electricity prices in the UK are typically about four times higher than gas.

However, the difference in operating costs is not significant.This is because heat pump water heaters are more efficient.You will only spend about £31 more per year if you are switching from a gas water heater to a heat pump water heater.

Lifespan

Heat pump water heaters have a lifespan of up to 15 years.This means they are more durable, especially compared to standard electric water heaters which typically last 10 to 12 years.

Payback Period

The savings from these systems translate to an average payback period of approximately 3-6 years.This is particularly true compared to purchasing a traditional electric water heater.

Incentives and Rebates

Let's look at the incentives and rebates offered for such systems in the UK and other parts of Europe:

UK

Currently, there are no grants for heat pump water heaters in the UK.Grants like the Boiler Upgrade Scheme only cover heat pumps.These should provide both hot water and heating.Heat pump water heaters only provide the former.

The ECO4 scheme may partially subsidize the installation of such water heaters.This is particularly evident in social housing.However, this measure is not yet in effect.

Other Parts of Europe

In Europe (excluding the UK), there are incentives for heat pump water heaters.These may include:

  • Tax refunds
  • Funding programs
  • Low-interest loans

Let's also look at some examples of incentives offered for such systems in European countries:

  • France: Grants up to €1200.
  • Croatia: Grants up to €4250 and subsidies up to 40%.
  • Belgium: Grants from €400 to €1600.
  • Lithuania: Grants up to €14500.
  • Italy: Tax credits are available for each Bonus House, Eco Bonus, and Super Bonus.

Are Heat Pump Water Heaters Worth Buying?

Heat pump water heaters are indeed a worthwhile investment for many families.They help achieve long-term savings, reduce energy bills, and are environmentally friendly.

Especially compared to other types of water heaters.Here are a few reasons to consider them:

Heat Pump Water Heaters vs. Gas Water Heaters


  • Healthier and Safer: Heat pump water heaters are generally healthier and safer. 

  • In contrast, gas appliances such as gas water heaters can lead to carbon monoxide poisoning. This is especially true if they are not properly maintained or ventilated. To reduce the risk, it is best to avoid using gas appliances.


  • More Energy Efficient and Environmentally Friendly: Heat pump water heaters are one of the most energy-efficient options available today. 

    They consume less energy and emit fewer greenhouse gases compared to gas water heaters.


  • Longer Lifespan: Heat pump water heaters have a longer lifespan than gas water heaters. 

  • They can last up to 15 years, while gas water heaters can last 10 to 12 years.


  • Quiet Operation: Heat pump water heaters operate quietly. 

  • Unlike gas water heaters, which don't increase their noise level much when starting up.

Comparison of Heat Pump Water Heaters and Resistor Water Heaters

  • Lower Operating Costs: Heat pump water heaters have lower operating costs than resistor water heaters (i.e., electric water heaters).
  • Increased Efficiency: Heat pump water heaters are more efficient (averaging around 300%). This means they produce three units of heat for every unit of energy consumed. In contrast, electric water heaters are typically 100% efficient.
  • Longer Lifespan: Heat pump water heaters have a longer lifespan (up to 15 years). 

    Their electric motors typically last an average of 10 to 12 hours.

  • Environmentally Friendly: Heat pump water heaters have a lower carbon footprint than electric water heaters.

Heat Pump Water Heaters vs. Tankless Water Heaters


  • Larger Capacity: Heat pump water heaters are a more reliable source of hot water capacity. 

  • For example, a 180-liter heat pump water heater can meet the needs of a three-bedroom family. In contrast, an instantaneous water heater may struggle to meet a family's needs.

  • Safer: Heat pump water heaters are safer than gas-fired tankless water heaters. The former does not burn fuel, therefore the risk of carbon monoxide leaks is lower. It is one of the safest options for home water heaters. Gas-powered tankless water heaters burn fuel, posing a risk of carbon monoxide leakage.

Conclusion

Heat pump water heaters are environmentally friendly and suitable for families to meet their hot water needs.They have a longer lifespan and lower operating costs than traditional water heaters. They are also highly efficient.

Although the initial cost is higher, the savings in the long run make them an attractive long-term investment.

You may be considering purchasing a Dentwiton heat pump water heater.The next steps should be:

Assess your family's expectations for the right appliance.

Check for rebates, grants, and other incentives available in your area.

Get a quote.