When installing a new heating system, it’s important that all components work together efficiently. This includes choosing the right hot water cylinder to suit your home and hot water requirements. This guide explains the different options available, helping you feel confident in how your system works and the choices being made.
What does a hot water cylinder do?
A hot water cylinder stores heated water, so it is ready to use throughout your home - for showers, baths and taps.
In modern homes, particularly those using air source heat pumps, cylinders play an important role in delivering reliable and efficient hot water.
Why is the right cylinder important?
Modern heating systems, especially heat pumps, operate differently from traditional boilers. They require cylinders designed to:
• Heat water efficiently
• Recover the desired water temperature quickly
• Retain heat for longer
This helps improve overall system performance and energy efficiency while ensuring consistent hot water for your home.
Types of hot water cylinders
Understanding the different types available can help you make sense of your heating system and how it is designed.
- Standard Cylinders - A reliable option suitable for most homes. Designed for everyday hot water use and available in a range of sizes.
- Slimline Cylinders - A space-saving alternative with narrower design, ideal for cupboards or smaller homes, without compromising performance.
- Smart Pre-Plumbed Cylinders - Designed for faster installation. Key components are factory-fitted, helping to reduce time on site while ensuring a consistent system setup.
- Smart Integrated Cylinders - A compact, all-in-one solution, combining hot water storage and system components. Ideal where space is limited or no airing cupboard is available.
What size cylinder do I need?
The right size of cylinder required will depend on your home and how you use hot water.
Factors include:
- Number of people in your household
- Typical usage (eg: showers or baths)
- Size of your property
- Overall heating system design
The correct size is selected as part of the overall system design to ensure efficient performance.
Designed as part of a complete heating system
Hot water cylinders are not selected in isolation - they are designed to work as part of a complete, fully integrated home heating system.
Grant Quick Recovery cylinders are designed to work with Grant Aerona R290 air source heat pumps, helping deliver efficient heating and reliable hot water throughout your home.
Supporting more energy-efficient homes
When paired with an air source heat pump, a high-performance hot water cylinder can help improve overall system efficiency and support a more energy-efficient home.
Designed around your home
Every home is different, which is why heating systems should be designed to suit your specific requirements.
Grant offers a home heating design service, ensuring the right combination of heat pump, hot water cylinder and system components are selected to work seamlessly and efficiently together.
As part of this approach, the most suitable cylinder is chosen to match your home’s needs - helping to deliver reliable performance and efficient hot water.
Learn more about Grant’s Home Heating Design Service
Which cylinder might suit your home?
While the final system design will depend on your home and heating requirements, the following provides a simple overview:
• Standard home installation – Standard cylinder
• Limited space – Slimline cylinder
• Faster installation preferred – Smart Pre-Plumbed cylinder
• No airing cupboard – Smart Integrated cylinder
Explore Grant cylinder solutions
Grant offers a range of hot water cylinders designed for modern homes and heat pump systems, including standard, slimline and smart solutions - all engineered to work seamlessly as part of a complete heating system.
View the Grant cylinder range.