Independent commercial service — not a government organisation
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Home heating comparison

Find a boiler that fits your home — not just the biggest model

Answer a few practical questions about your property, hot-water demand and current heating setup. We’ll help you narrow down the boiler options worth discussing with a heating professional.

No government scheme or funding application. This is an independent commercial enquiry service.

Modern boiler installation in a UK home

A better match starts with the property, not the product label.

Property size & layout
Hot water bathrooms & demand
System existing setup
✓Compare suitable boiler types
✓Review sizing and hot-water needs
✓Add insulation to the same enquiry

Which boiler type may suit your home?

The right choice depends on your existing system, space, number of bathrooms and how your household uses hot water.

C

Combi boiler

Provides heating and hot water from one unit without a separate hot-water cylinder. Often considered where space is limited and hot-water demand is moderate.

  • No separate cylinder
  • Compact setup
  • Suitability depends on flow demand
Check combi suitability →
S

System boiler

Works with a hot-water cylinder and can be useful for homes that need stored hot water or have multiple bathrooms.

  • Stored hot water
  • Can support higher simultaneous demand
  • Requires cylinder space
Check system options →
R

Regular boiler

Sometimes called conventional or heat-only. It may make sense where an existing traditional system already uses a cylinder and cold-water storage.

  • Can suit older system layouts
  • Works with stored hot water
  • Replacement design should be assessed
Check regular options →

Five factors that matter before choosing a boiler

A headline kW figure alone does not tell you whether a boiler is a good fit.

1Property size
2Bathrooms
3Hot-water demand
4Existing heating system
5Installation layout

How the home check works

The form is designed to collect the details that actually influence a boiler recommendation.

Describe your property

Property type, bedrooms, bathrooms and postcode help establish the basic heating and hot-water context.

Tell us about your current system

Choose the existing boiler type, fuel, approximate age and what matters most to you.

Request suitable options

Leave your contact details if you want to discuss boiler, insulation or both with an independent service provider.

Start the home check
Heating efficiency

A new boiler can only heat the home you give it

If a property loses heat quickly through the loft or roof, the heating system has to keep replacing that lost heat. Reviewing insulation alongside a boiler replacement can reduce heat loss and make the overall heating setup work more efficiently.

✓Keep more heat inside during colder months
✓Reduce avoidable heating demand
✓Request boiler and insulation advice together
Read the insulation guide

Planning the boiler and insulation together

It can be useful to consider the fabric of the property at the same time as the heating appliance. That does not mean every home needs insulation work — it simply gives you a fuller picture before spending on a replacement system.

Check both options

Ready to narrow down your options?

Choose boiler advice, insulation advice, or both on the next page.

Start home check

Common questions

How do I know what boiler size I need?

Boiler sizing depends on the property, heating load, hot-water demand and system design. The home check gathers these basics, but a final specification should be confirmed by a competent heating professional.

Is a combi boiler always the cheapest option?

No. Purchase and installation cost can vary with the existing system, pipework, controls, cylinder requirements, flue position and the amount of work needed.

Do I need to replace my radiators?

Not necessarily. Existing emitters and controls should be reviewed as part of the system assessment, especially if the property has uneven heating or old controls.

Why ask about insulation?

Insulation can reduce heat loss from the property. That can lower heating demand and may be worth considering when you are already reviewing a replacement heating system.

Is Saideh a government service?

No. Saideh is an independent commercial information and enquiry service and is not a government organisation or government agency.