Other Considerations with Hydronic Heating
Combi Boilers – Instant Domestic Hot Water
A Combi boiler is a boiler that can provide domestic hot water as well as water for hydronic heating. These are a great option for a small home or single bathroom, however, there are important limitations to be aware of.
A Combi boiler has a low flow rate so when they are used as an instant domestic hot water system they are only suitable for a single hot tap being on at one time. They also need to be installed as close as possible to the hot water location so the hot water reaches the outlet quickly.
Combi Boilers – Boosted Storage Domestic Hot Water
An all in one unit that provides a boiler for the hydronic heating and domestic hot water with a storage unit. Having a storage unit means that you can provide all domestic hot water with your hydronic heating boiler. This unit can provide a home with up to 3 bathrooms with its total hot water requirements, and means you don’t require a separate domestic hot water system.
Solar Heated Water
Hydronic heating is a closed circuit so solar hot water can’t be used in a hydronic heating system. However, it can be used for domestic hot water with a combi boiler as a boosted storage system.
Solar power can be used to offset the power costs of an electric fired system. Hydronic heating requires a large amount of kW’s so realistically you would never be able to generate enough kW’s from solar in winter to completely cover your energy costs.