How easy is the heat pump to install?
A good heat pump system should be straightforward to install, reducing installation time. A basic installation should take a couple of days but more complex systems may need longer to complete.
Heat pump size and appearance
Unlike traditional heating systems, heat pumps use outdoor units that may be unfamiliar to UK homeowners. So it’s important to consider the size and appearance of the external unit. Heat pumps that are compact and discreet in their design are more likely to be acceptable to clients.
How efficient is the heat pump: Understanding COP and SCOP
There are two key metrics that measure heat pump efficiency: the Coefficient of Performance (COP) and the Seasonal Coefficient of Performance (SCOP).
What is COP?
The Coefficient of Performance (COP) is the ratio of the heating or cooling provided by the system to the amount of electrical energy it consumes. It represents a heat pump’s efficiency at a specific point in time.
A COP greater than 1 indicates that the heat pump is more efficient than a simple electric heater. For example, a COP of 3 means that for every unit of electrical energy consumed, the heat pump provides three units of heating or cooling.
For air source heat pumps, the COP usually ranges from 2.0 to 5.0, meaning that for every unit of electricity consumed, the heat pump produces 2 to 5 units of heat.
Ground source heat pumps can achieve even higher COP values.
The SCOP provides a more comprehensive measure of a heat pump's efficiency over an entire heating season. It accounts for temperature variations throughout the year, offering a more realistic representation of a system's annual energy efficiency.
A good heat pump COP is generally between 3.0 and 5.0.
A good SCOP is typically above 3.5, indicating that the system provides efficient heating or cooling over the entire season.
How well will a heat pump serve the hot water supply?
Heat pumps must provide domestic hot water without compromising comfort. This involves having high-performing cylinders and stored water systems with fast reheat times. Ensuring a consistent and efficient hot water supply is vital for customer satisfaction.
Smart integration: the future of home heating
Modern heat pumps should offer advanced connectivity options for diagnostics, customer usability, and smart home integration. From 2025, appliances will need to be "energy smart," meaning they can interact with home energy management systems (HEMS), smart tariffs, and demand-side response (DSR) systems.
The benefits of smart energy systems for homeowners
Smart heat pumps have features that help improve heating controls and optimise energy use. They can connect with popular smart home platforms like Google Home or Amazon Alexa to allow homeowners to control heating systems through voice commands or smartphone apps.
When paired with smart thermostats, these systems can control temperature room-by-room, improving both comfort and energy efficiency.
Smart heat pumps can also connect to systems used to optimise energy use based on electricity prices or solar power availability leading to significant energy and cost savings for homeowners.
Smart heat pump systems offer
Improved heating and hot water control
Better energy efficiency and lower bills
Room-by-room temperature controls
Integration with renewable energy systems including solar power
Highlighting these smart features can help you demonstrate the long-term value and efficiency of heat pump installations to your customers.
How noisy is the heat pump?
It's something of a misconception, that heat pumps can be very noisy. As with so many things, technology has improved so that new models are a lot quieter than they used to be. But noise is something to consider, particularly when installing in a residential area.
Specification
It's essential to chose the right size and specification of heat pump in any installation to guarantee efficiency and performance. Many manufacturers offer design apps to help you carry out building surveys and produce MCS-compliant design documents, to help you with precise specifications.
This is also something that CEF can help with through our Renewables experts. Contact us to find out more.
Power: is there enough to run a heat pump?
Heat pumps rely on electricity, so it’s crucial to assess the home’s electrical capacity before you install one.
As the size and power of heat pump systems increase, so does their electrical demand. Consider the following typical electrical requirements:
Heat pump and immersion (6kW): 26A
Electric cooking: 32A
Electric vehicle charging (7kW): 32A
Lights and power (all floors): 40A
Total: 130A
From this example, you can see how quickly electrical demands add up in a modern household. As an electrician, it's your responsibility to assess whether the existing electrical infrastructure can support the additional load of a heat pump.
Key considerations
Main supply capacity - Can the existing supply handle the increased demand of a heat pump?
Distribution board capacity - Can the existing distribution board safely accommodate a heat pump circuit?
Cable sizing - Is the existing wiring suitable for the increased load?
You may need to recommend and install electrical upgrades or modifications to guarantee that the heat pump will work reliably without overloading the system. For example, you may need to upgrade the main supply, install a new consumer unit, or add load-balancing devices.
Electrical design is critical for safety. You must ensure that there is adequate grounding and circuit protection when installing a heat pump system into a home's electrical network.
By thoroughly assessing and addressing these electrical considerations, you'll ensure a safe, efficient, and reliable heat pump installation for your customers.
Support and warranty
Knowing that there is reliable aftersales service and warranty support for heat pump installations can be a great source of reassurance for your customers as well as yourself.
Look for manufacturers that provide comprehensive support, including technical and customer helplines and readily available spare parts. Check whether their warranty terms cover parts only or both parts and labour.
Keeping up with the world of heat pumps
Heat pumps are getting smarter and more efficient by the day. Knowing the latest products and innovations helps you offer your customers the best options available.
The UK government's push towards net-zero emissions is also driving updates in building regulations and energy efficiency standards. Keeping abreast of these changes ensures your installations remain compliant and eligible for any available grants.
As a well-informed installer, you can provide better advice to customers, helping them to make informed decisions about their heating systems which could lead to opportunities for more electrical improvements and future work.
By knowing how to specify a heat pump system that not only meets current needs but is also ready to adapt to future energy requirements, you’re helping homeowners make a smart and reliable investment in sustainable heating.
How CEF can help
Personalised consultation
Talk to our Renewables experts who can assess your needs, evaluate the property’s characteristics, and recommend the most suitable heat pump solution.
Efficient installation
From ground-source to air-source heat pumps, our team can help you handle the installation process to ensure optimal performance and system longevity.
Advanced technology
We stay at the forefront of renewable energy advancements, bringing you the latest heat pump innovations that maximise energy efficiency and minimise environmental impact.
Visit cef.mom/renewables for more information or ask in your local branch.