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Sponsored advertising content · Updated for 2026

Why More UK Homeowners Are Upgrading Their Home Insulation in 2026

Loft insulation installed between roof timbers in a UK home
Key points:
  • Better loft or roof insulation can reduce heat loss and the amount of heating a home needs.
  • When replacing an older boiler, it can be practical to review insulation at the same time.
  • You can request boiler advice, insulation advice, or both through the same home check.

Why look at insulation when replacing a boiler?

A replacement boiler is only one part of the heating picture. If warm air is escaping quickly through the loft, roof or other parts of the building, the heating system has to keep replacing that lost heat.

That is why some homeowners choose to review insulation at the same time as a boiler replacement. The aim is simple: keep more of the heat you have already paid to produce inside the property, rather than relying on a larger or harder-working heating system to compensate for avoidable heat loss.

Check boiler and insulation options for your home

Select your property type to start. The next page lets you choose boiler, insulation or both.

🏠Detached 🏘️Semi-detached 🏡Terraced 🏚️Bungalow 🏢Flat ▦Other

What changes when a home holds heat better?

Reducing heat loss can mean the heating system has less work to do to maintain a comfortable indoor temperature. The result can be a more stable-feeling home and lower heating demand. The actual effect depends on the property, the existing insulation level, how the home is used and the heating system itself.

Want insulation included in your enquiry?

Choose “Boiler + insulation” on the next page and include both in one request.

Check both options

Why loft and roof insulation is often reviewed first

1
Heat retention — reducing heat loss at the top of the property can help the home retain warmth for longer.
2
Heating demand — less lost heat can mean less energy is needed to restore room temperature.
3
Comfort — better thermal performance can help reduce cold upper rooms and temperature swings.
4
Planning efficiency — reviewing insulation before or alongside a new boiler gives a heating professional more context for the overall system.
5
One enquiry — boiler replacement and insulation can be requested together if you want both reviewed.

How to request both in one home check

1
Select Boiler + insulation as the type of help you want.
2
Answer a few questions about the property, current heating system and your priorities.
3
Leave your details if you want an independent provider to contact you about suitable next steps.

Review the whole heating picture

Boiler, insulation or both — choose what you want included.

Start home check

This article is sponsored advertising content and not editorial content. Saideh is not a government organisation. Information is general and does not guarantee a particular reduction in energy use, cost or heating demand; outcomes vary by property, system, installation and household use.