Installing a heat pump

How to start a heat pump installation

You've done the research, talked to people about their experiences and decided you want that level of comfort in your home. You're ready to get a heat pump. What's next?

Step 1: Choose your installer

When choosing your SEAI registered contractor, it's a good idea to talk to more than one installer. Be sure to get quotes and references from each of them. Even better, if you know people who have made the switch, talk to them about their experience and ask for recommendations. It is important to shop around so you get the right quote for your needs.

Step 2: Choose the right heat pump for your home

You have heard about different heat pump systems but are not sure which one is best for you. The list of choices can seem overwhelming at first. It mostly comes down to practical considerations like space and cost, which will narrow down your options. Your heat pump installer will be able to recommend the best option and explain everything in a clear way.

Step 3: Apply for the heat pump grant

When applying for a heat pump grant, be sure to submit your application before starting any work.  There are two options to getting a heat pump grant. 

The individual heat pump grant is the best choice if you only want to install a heat pump right now. It's suited to well-insulated homes.

An SEAI registered One Stop Shop is the best option if you plan to carry out other upgrades along with installing a heat pump. One Stop Shops manage the project from start to finish, including the grant application.

Step 4: Design your system

A heat pump is designed to provide all your space heating and at least 80% (but usually all) of your hot water. The size of the heat pump is worked out by calculating the heat demand for each room in the house and using that to get the total heat requirements. Your heat pump installer will carry out this calculation.

This calculation also allows the installer to see what size radiator is needed to heat each space and if the existing radiators need to be replaced. If you have underfloor heating, they will also assess it to ensure it works well with your heat pump.

If you are getting an air source heat pump, you'll need to decide where to put the outdoor unit and the hot water cylinder. The outdoor unit should be as close to the house as possible. You don't want the hot water from the heat pump travelling too far to the cylinder inside. It should ideally be away from windows, especially bedrooms.

Step 5: Getting your heat pump installed and commissioned - what to expect

When the heat pump is being installed, you will be without heat for a few days so it is important to plan for that. Your installer will be able to let you know how long the install will take.

Commissioning is the final step once the installation is complete. This is when the installer makes sure your system is set up to run as efficiently as possible.

Make sure the installer explains how to use your heating system. Ask them to show you how to use the controls and settings. The way you use a heat pump can have a big impact on its efficiency so make sure you feel confident using it before the installer leaves. You shouldn't need to do anything with your heat pump too often. They're designed to operate without much input once set up, unlike a traditional boiler.

We also advise homeowners to ask about the warranty and after-sales service. Ideally, ask about a service contract for support. This will help with any teething problems you may have.

Step 6. Submit your documents and claim your grant

If you have applied for the individual heat pump grant, you have eight months to install your heat pump and carry out a post-works BER assessment. You then submit your completed grant documents to SEAI. The grant is paid directly into your bank account.

If you applied using a One Stop Shop and installed your heat pump as part of a major home energy upgrade, the One Stop Shop will manage all the paperwork. The grant will have been deducted from the cost of works upfront.