How long does a new build SAP certificate last before RdSAP takes over?
An on construction SAP EPC usually lasts ten years. Only once it expires does [...]
Which EPC do mortgage lenders and buyers actually see?
Once your on construction SAP certificate expires, the RdSAP based EPC becomes the certificate [...]
Can I get my RdSAP EPC rating corrected to reflect the original SAP figures?
Partly, yes. If you can supply your assessor with a genuine air pressure test [...]
Does a lower RdSAP score mean my new build is less energy efficient than promised?
Not usually. The building itself has not changed. RdSAP cannot verify hidden specification details [...]
Why does my finished new build EPC score lower than the on construction SAP certificate?
Design stage SAP calculates ratings from the exact build specification and a tested air [...]
How is pricing worked out?
Legionella risk assessment pricing is based on the number of taps in the property, with four tiers from up to 3 to 9+ taps.
What’s included in the report?
Our legionella risk assessment report details findings, risks identified, and recommendations, kept on file as compliance evidence.
What’s not covered by a Bluewire Hub legionella risk assessment?
We assess domestic and light commercial water systems; cooling towers and complex commercial systems fall outside our scope.
What water temperatures are required to control legionella?
Cold water should stay below 20°C and hot water should reach 60°C at the cylinder and 50°C at the tap to control legionella risk.
What are dead legs and why do they matter?
Dead legs are unused sections of pipework where stagnant water can let legionella bacteria grow, a key focus of any risk assessment.
What actually improves a home’s EPC rating?
Fabric and heating measures
What is TM44, and does it apply to my home?
TM44 is a separate inspection for air conditioning systems above 12kW cooling capacity. Most [...]
Does air conditioning count as a fixed heating system on an EPC?
No. Reversible heat pumps used purely for cooling are not counted as fixed heating [...]
Will installing air conditioning improve my EPC score?
No. Because cooling sits outside the RdSAP calculation, air conditioning cannot raise or lower [...]
Does air conditioning affect an EPC rating?
No. Domestic EPC ratings under RdSAP are based on space heating and hot water, [...]
How much does DEA mentoring cost?
The DEA Launchpad 4-week group programme is £300 per person.
Can I get the Warm Home Discount on a prepayment meter?
Yes. If you use a key or card meter, ensure the account is registered in your name.
Does the Warm Home Discount affect my Winter Fuel Payment or Cold Weather Payment?
No, the Warm Home Discount is separate.
What happens if I’m not named on my energy bill?
Your supplier won't be able to match you to the qualifying benefit records.
Who is eligible for the £150 Warm Home Discount?
In England and Wales, households where the bill payer receives certain benefits
What is the Warm Home Discount deadline for 2026?
The deadline is 23 August 2026.
Will my existing EPC become invalid when HEM launches?
Existing EPCs remain valid for ten years from issue.
Is any of this confirmed, or still just proposed?
The four metric structure and the heating system cap come from a government consultation that closed in March 2026.
Does this mean landlords must fit a heat pump by 2030?
Not necessarily.
When does the Home Energy Model launch?
The launch was delayed from October 2026 to the second half of 2027.
Can a gas boiler ever get EPC band C under the Home Energy Model?
Under the current proposals, no.
What is the fastest EPC improvement to make right now?
For most homes, topping up loft insulation and improving heating controls tend to offer [...]
Is the price cap the same as my actual bill?
No. The price cap sets the maximum unit rate and standing charge a supplier can charge on a standard variable tariff.
How old can my EPC be before it stops being useful?
An EPC remains legally valid for 10 years.
Does a better EPC rating actually lower my energy bill?
A better EPC rating means the modelled cost of heating and lighting the home is lower, which generally does translate into lower bills.
