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For installers tired of the logistical headaches that come with new boiler installations, boiler packs are a superb solution. Rather than buying each part separately, a boiler pack includes all the key, manufacturer-approved components in one kit. This ensures everything works together and speeds up the installation process.
Boiler packs prevent on-site surprises, saving time and money by avoiding missing parts or incompatible controls.
At City Plumbing, the home of heating, we break down the pros, cons, and specific requirements for each system to help you find the right 'all-in-one' solution for your customers' hot water and heating needs.
A Brief Guide to Boiler Pack Types and Suitability
Choosing a boiler pack (combi, system, or heat-only) in the UK often simplifies the installation process and ensures you have the necessary components, like the boiler itself, flue, and sometimes controls or a filter, all together.
The choice between a combi, system, or heat-only boiler pack depends on several key factors related to your customer's home and hot water needs:
1. Combi Boiler Packs (Combination Boiler)
A combi (combination) boiler is a single, compact unit that provides both central heating (warming radiators) and hot water on demand from your taps or shower without needing a separate water cylinder.
Choose a Combi Boiler Pack if:
- You’re working on a smaller property (flat, small house) with one bathroom.
They are ideal for lower hot water demand, as they heat water instantly from the mains supply.
- Space is limited.
They are compact and don't require a separate hot water storage cylinder (a tank used to store pre-heated water) or a cold water storage tank (typically located in the loft, storing water for the system).
- Your customer requires instant hot water.
They heat water when you turn on the tap, so you don't need to wait for a tank to heat up.
- Food mains water pressure is available.
The hot water pressure is reliant on the incoming mains pressure; if it's low, performance can suffer, especially when multiple taps are running.
- You require a cheaper and simpler installation process (when replacing an existing combi).
Fewer parts mean less pipework and a quicker installation.
Considerations: Not ideal for homes with multiple bathrooms, as running two hot taps simultaneously can cause a drop in water flow and temperature.
2. System Boiler Packs
A system boiler heats central heating and sends water to a separate cylinder. Key components, including the pump and expansion vessel, are located within the boiler.
Choose a System Boiler Pack if:
- The property is a medium to large home (multiple bedrooms) with two or more bathrooms.
The stored hot water allows you to run multiple taps, showers, or baths simultaneously without significant drops in pressure or temperature.
- Your customer needs high volumes of hot water simultaneously.
- There is a requirement to upgrade from an old heat-only system while freeing up loft space.
They don't require a separate cold water storage tank (a tank that holds cold water, usually installed in the loft); only the hot water cylinder (a tank that stores heated water for household use) is needed.
- Your customer wants to install a solar water heating system.
System boilers, when paired with the correct type of cylinder, are easily compatible with solar thermal panels.
Considerations: Requires space for the hot water cylinder. Once the stored hot water runs out, you have to wait for the cylinder to reheat.
3. Heat Only Boiler Packs (Regular or Conventional Boiler)
A heat-only boiler (also known as a regular or conventional boiler) is suitable for a traditional system that includes both a separate hot water storage cylinder (a tank that keeps heated water for taps) and two tanks in the loft: a cold water storage tank (supplies unheated water) and a small expansion tank (manages pressure in the system).
Choose a Heat Only Boiler Pack if:
- You’re replacing an existing heat-only system and want to minimise disruption and cost.
It's often the easiest "like-for-like" replacement, as it uses existing pipework, tanks, and the hot water cylinder.
- You're working in a large, older property with multiple bathrooms.
- Your customer’s property has poor mains water pressure.
Gravity feeds the cold water, offering better flow than a combi when mains pressure is low; hot water pressure depends on the height of the cold water tank.
- Your customer would like to install a solar water heating system.
Like system boilers, they are compatible with solar thermal systems.
Considerations: Requires the most space for the boiler, hot water cylinder, and the two tanks in the loft.
Benefits of Choosing a Boiler "Pack" or "Kit"
Regardless of the type, choosing a pack or kit is often beneficial because:
- All-in-one: Get the boiler and compatible parts (flue, controls, fixings, sometimes a filter) in one go.
- All parts work together, reducing delays from missing or mismatched items.
- Cost-Effective: Often, buying the pack is cheaper than sourcing the boiler and accessories individually.
- Warranty: The main components included in the pack are usually covered by the overall boiler warranty.
Find an All-In-One Boiler Solution At City Plumbing
By choosing a boiler pack, installers avoid compatibility issues, reduce delays, and gain a cost-effective solution with a longer, validated warranty. The pack model ensures a smoother, faster, more professional installation.
Whether you require instant hot water for a small flat (Combi) or a high-volume supply for a busy family with multiple bathrooms (System/Heat Only), there’s a pre-packaged solution available to suit at City Plumbing.
City Plumbing can help you streamline your next boiler installation. Take a further look at our website for more products and helpful advice on how we can help you keep your customers warm this season.
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