Planning a renovation? It’s the perfect time to not only improve your home’s look but also make it more energy efficient. The changes that save energy might not be as eye-catching as a new kitchen island, but they pay off every month on your bills.

Here’s how to make the most of your renovation and boost your home’s efficiency.

Focus on the Basics First

Before splurging on designer lighting or underfloor heating, deal with the invisible culprits that let heat and money escape from your home.

Insulation
If your home isn’t properly insulated, you’re essentially heating the outdoors. During your renovation, it’s far easier and cheaper to add insulation in key areas:

  • Filling uninsulated cavity walls can cut heat loss by up to a third.
  • Internal wall insulation is ideal for solid walls to reduce escaping heat.
  • Roof or loft insulation prevents hot air from rising out of your home. Aim for at least 270mm of mineral wool.
  • If you’re pulling up floorboards or relaying concrete, adding floor insulation will keep your home warmer.

Windows and Doors

Upgrade to Energy-Efficient Glazing
Single glazing isn’t the best at keeping heat in. If replacing windows, go for double or triple-glazed units with low-emissivity (low-E) glass. Look for a good Window Energy Rating (A-rated or better). Secondary glazing is a cheaper option for period homes with good frames.

Seal the Gaps
Proper draught-proofing for doors and windows can make a big difference. Install weatherstripping or use sealant to fill any gaps.

Heating and Hot Water

Consider a Boiler Upgrade
If your boiler is over 10 years old, it’s probably inefficient. Switching to an A-rated condensing boiler or a heat pump can reduce your energy use significantly. Renovations are the perfect time to upgrade if walls or plumbing are already open.

Add Smart Controls
Smart thermostats, radiator valves, and zoning systems let you heat only the rooms you’re using, saving hundreds on your annual bills. Many systems can be controlled from your phone, so you never waste energy while away from home.

Lighting and Electricals

Switch to LED Lighting
LEDs use up to 90% less energy than halogen bulbs and last longer. During renovations, it’s an easy upgrade for all fixtures.

Choose Energy-Efficient Appliances
When installing a new kitchen, pick appliances with high energy ratings (A or above). Integrated models may look sleek, but always check efficiency. Proper ventilation also helps fridges and freezers run less hard.

Consider Renewable Options

Solar Panels
If your roof is being worked on, consider adding solar PV panels. Pair them with battery storage to maximize savings.

Heat Pumps
Replacing a gas boiler with a heat pump is a bigger job, but if your renovation involves replumbing or rewiring, it may be the ideal time to make the switch.

Keep Your Home Well-Ventilated

Making your home more airtight is great for energy savings, but you’ll need proper ventilation to avoid damp and condensation. Mechanical ventilation with heat recovery (MVHR) systems can help you breathe fresher air without losing heat.

Energy Efficiency Pays Off

Renovating with energy efficiency in mind lowers bills, increases property value, makes your home more comfortable year-round, and reduces your carbon footprint. Even small upgrades now save money and disruption later.

Don’t Forget

You could qualify for free or partially funded insulation and heating upgrades through government schemes like ECO4 or the Great British Insulation Scheme (GBIS). This could cover all or part of the work, from insulation to boiler upgrades.

Check your eligibility today, it’s quick, simple, and could make a real difference to your home and bills.