Landlords & Property · 8 min read · Beginner
Low-Cost Energy Improvements to Check Before a Major Refurbishment
A practical first-pass list of controls, draughts, lighting, insulation gaps and maintenance issues worth checking before committing to expensive heating or building-fabric work.
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Key points & steps
- Start with the heating schedule and thermostat. Correcting excessive temperatures, unnecessary operating hours or a badly positioned thermostat can reduce waste without replacing the heating appliance.
- Check thermostatic radiator valves and basic controls for obvious faults or rooms that are routinely overheated while others remain cold.
- Replace remaining inefficient frequently used lamps with suitable LEDs and fix obvious “always on” lighting where timers, occupancy controls or better habits would be appropriate.
- Inspect external doors, opening windows, loft hatches and service penetrations for unintended draughts, while keeping purpose-provided ventilation clear.
- Check accessible loft insulation for major gaps, compression or obviously low coverage before assuming a more expensive whole-house measure should come first.
- Insulate accessible hot-water pipework and review an older cylinder jacket where suitable, while keeping controls and safety components clear.
- Fix maintenance defects that increase heat loss or moisture, such as failed window seals, leaking gutters, damaged external sealant or doors that no longer close properly.
- Review energy bills and the existing EPC recommendations after the basic corrections. Use that information to decide whether the next capital step should be insulation, windows, heating or renewables.
- If a major refurbishment is already planned, do not spend twice: coordinate low-cost interim work with the future fabric/heating plan so temporary improvements are not immediately ripped out.
Practical tips
- Low-cost measures will not transform every inefficient property, but they can expose where the remaining heat-loss problems actually are.
- Do not block ventilation to eliminate a draught; distinguish uncontrolled leakage from intentional ventilation.
- A cheap boiler replacement is not necessarily a sensible first move if a major insulation project is about to reduce the design heat load.
What you may need
- Recent energy bills
- Current EPC if available
- Heating-control details
- Basic property inspection checklist
- Tape measure / insulation-depth check