Describe the home
Type, age, size, heating and what is already installed.
About 90 seconds Free UK whole-home planner
Know what to upgrade.
And what to skip.
Turn five simple answers into a practical home energy plan—with honest cost ranges, likely savings and the right order of work.
No email required
About 3 minutes
Private by design
Potential annual saving
£650
Estimated range £490–£810
31%less
YOUR BEST NEXT STEPSTypical scenario
1Seal the leaky edgesFrom £320 · do now£40/yr
2Top up loft insulationFrom £880 · fabric first£70/yr
3Price a solar array4.5 kWp · strong fit£610/yr
Ready for quotes?Compare verified options
Possible support£7,500Eligibility applies
Transparent inputsEvery rate is editable
Ofgemenergy prices
Energy Saving Trustcost benchmarks
GOV.UKgrants and schemes
MCSinstaller standards
A CLEARER STARTING POINT
Home upgrades are confusing.
Home upgrades are confusing.
Your plan shouldn’t be.
Hearthline looks at the building as a system, then ranks the work by urgency, fit and likely value.
Stress-test the numbers
Switch between conservative, typical and optimistic scenarios.
No false precisionTake the next step
Save the plan, check grants and compare like-for-like quotes.
You stay in control
INSIDE YOUR PLAN
More useful than
More useful than
a single payback number.
PERSONALISED ROADMAP
The right work, in the right order
Quick wins, fabric upgrades and clean technology are sequenced so one project prepares the home for the next.
NowControls + draughts
NextInsulation
LaterSolar + clean heat
ways to test the plan
Conservative, typical and optimistic—because weather and behaviour change real outcomes.
Possible support£7,500
Current help, shown in context
Nation and heating type shape what may be available.
QUOTE-READY CHECKLIST
Know what a good quote should include
Carry a practical checklist into every installer conversation.
- ✓ Assumptions stated
- ✓ Performance model
- ✓ Warranty and exclusions
- ✓ Certification checked
EXPLORE A REALISTIC EXAMPLE
Different homes need
Different homes need
different answers.
See how the order changes with the building. These examples use current published benchmarks—not promises.
1930s mid-terrace · 92m²Fabric first, then generate
Strong fitPotential saving£650/yr
First phase£4,400
Bill reduction31%
1Draughts + controlsLow cost · comfort first
2Loft + cavity wallsPrepare the fabric
34.5 kWp solar arrayStrong bill-saving fit
BUILT TO BE CHECKEDTrust the method,
Trust the method,
not the marketing.
Hearthline makes money from some partner referrals. That never changes which improvements appear first.
Read the full methodology ↗Editable assumptions
Use our current defaults or replace every tariff and consumption figure with your own.
Ranges, not guarantees
Real homes, quotes and behaviour vary. We show uncertainty instead of hiding it.
Commercial separation
Recommendations are calculated before partner links are added. Paid links are clearly labelled.
Quarterly review cycle
Tariffs and schemes are checked every quarter; core cost benchmarks every six months.
GOOD QUESTIONS
Straight answers.
Is this an EPC assessment or installer quote?+
No. Hearthline is an early planning tool. Confirm suitability, system design, costs, savings and grant eligibility with qualified professionals.
How accurate are the savings?+
They are indicative scenarios. Your actual result depends on weather, occupancy, building fabric, system design, energy rates and how you use the home.
What happens to my answers?+
Your plan stays in this browser. We do not send your answers to a server. Clearing this site’s browser data removes the saved plan.
How does Hearthline make money?+
Some clearly labelled links may earn a referral fee when you request a quote or switch tariff. Partner payments never change your ranking or estimate.
Why should I get more than one quote?+
Design assumptions and included work vary. Comparing at least three like-for-like quotes helps expose exclusions and unrealistic performance claims.
Can I use this for an older or listed home?+
Use it only as an early guide. Historic, listed, solid-wall and damp-affected homes need building-specific moisture and conservation advice.
YOUR HOME. YOUR NUMBERS.Make the next upgrade
Make the next upgrade
the right one.
Free, private and ready in about three minutes.