Spring is an ideal time for homeowners to improve their home’s energy efficiency. Milder weather makes maintenance and upgrades easier to tackle before the warmer summer months arrive.
Energy-efficient improvements can lower power bills, make a home more comfortable and reduce demand on heating, cooling and hot-water systems. Some upgrades may also make a property more attractive to buyers by helping reduce ongoing running and maintenance costs.
Not every project delivers the same return. A major renovation can take years to pay for itself, while smaller improvements may reduce energy use almost immediately. The best approach is to focus on upgrades that address genuine problems and suit the home’s age, construction, location and household needs.
Start With a Home Energy Assessment
Before replacing appliances or adding insulation, identify where the home is losing energy. A professional home energy assessment can look at insulation, windows and doors, draughts, lighting, appliances, hot-water systems, and heating and cooling equipment.
Homeowners can also carry out their own basic checks. Look for noticeable draughts, rooms that are difficult to heat, condensation, dampness, ageing appliances or unusually high power bills.
An assessment can help prioritise improvements and reduce the risk of spending money on an upgrade that does not address the main source of heat loss or energy use.
Seal Draughts and Air Leaks
Draught stopping is one of the simplest and most affordable ways to improve comfort and energy efficiency. Gaps around windows, external doors, extractor fans, ceiling access hatches and floorboards can allow warm air to escape in winter and unwanted heat to enter in summer.
Sealant can be used for narrow, fixed gaps, while weather stripping is useful around opening doors and windows. Door snakes and brush seals can help reduce draughts beneath external doors. Larger gaps or damaged joinery may require professional attention.
Reducing unwanted air leakage can make rooms more comfortable, minimise temperature swings and help heating and cooling systems work more efficiently.
Good ventilation is still essential, particularly in kitchens, bathrooms and other areas where moisture is produced.
Improve Insulation
Insulation is especially important, where many older homes can be difficult and expensive to heat.
The ceiling or roof space is often a good place to start because significant heat can be lost through the roof. Underfloor insulation can also make a noticeable difference in homes with suspended timber floors, while wall insulation may be worth considering where practical.
Insulation performance is measured by R-value, with higher values generally providing greater resistance to heat flow. The appropriate insulation level will depend on the home’s construction, location and climate.
Any roof leaks, dampness or ventilation issues should be addressed before new insulation is installed. Installation should also comply with building and electrical safety requirements, particularly around wiring, recessed lighting and other heat-producing fittings.
Use Heating and Cooling Controls Wisely
Timers, thermostats and smart controls can help reduce energy use by operating heating or cooling only when it is needed.
Many modern heat pumps allow households to schedule operation or control the system remotely. Rather than running heating continuously, controls can be used to warm occupied rooms at the times they are most likely to be needed.
Avoid extreme thermostat settings. Setting a heat pump to a very high temperature will not necessarily warm the room faster and can increase energy use.
During summer, fans can also help circulate air and may reduce the need for air conditioning.
Controls cannot compensate for poor insulation or persistent draughts, but they can help an efficient home and heating system perform better.
Switch to LED Lighting
Replacing halogen or incandescent bulbs with LEDs is a straightforward way to reduce electricity use.
LEDs use considerably less energy, last longer and generate less heat than traditional bulbs. Start with lights that are used most frequently, such as those in kitchens, living areas, bathrooms, hallways and outdoor spaces.
When choosing LEDs, compare lumens rather than wattage to determine brightness. Colour temperature can also help create the right atmosphere, from warm light for living areas and bedrooms to cooler light for task-focused spaces.
Replace Appliances at the Right Time
Replacing a working appliance solely to reduce energy use may not always make financial sense. Instead, energy efficiency should be a priority when a fridge, dishwasher, washing machine or other major appliance is approaching the end of its useful life.
Compare the Energy Rating Label, expected annual energy use, water consumption, capacity and estimated running costs.
Choose an appliance that suits the household rather than simply buying the largest model available. Oversized appliances can use unnecessary energy, while undersized ones may need to run more frequently.
Regular maintenance can help too. Clean filters, check door seals, allow adequate ventilation around fridges and freezers, and follow the manufacturer’s maintenance instructions.
Service Heat Pumps Before Summer
Spring is a practical time to clean and service heat pumps before they are needed for summer cooling.
Clean or replace filters as recommended, make sure indoor and outdoor units have adequate airflow, and clear leaves, vegetation or debris from around outdoor units. Professional servicing may be worthwhile if the system is noisy, performing poorly or has not been checked for some time.
For ducted systems, damaged, disconnected or poorly insulated ducting can waste energy and reduce comfort. Repairing these problems can improve performance.
When replacing a heating or cooling system, consider efficiency, appropriate sizing, installation quality and expected running costs. A larger or more sophisticated system is not automatically the best option.
Reduce Hot-Water Energy Use
Water heating can account for a significant share of household energy use, so relatively small changes can make a difference.
Efficient showerheads and tap aerators can reduce both water use and the energy required to heat it. Fix leaking hot taps, insulate accessible hot-water pipes where appropriate and consider reducing shower times.
When a hot-water system needs replacing, compare options such as heat-pump water heaters, solar hot water, electric cylinders and continuous-flow systems.
The best choice will depend on household size, climate, available space, existing infrastructure and typical hot-water use.
Make the Most of Spring Sunshine
Longer daylight hours can reduce the need for artificial lighting, but warmer weather also makes effective shading increasingly important.
Blinds, awnings, shutters, shade sails and strategically planted deciduous trees can help reduce excessive summer heat. North- and west-facing glazing may benefit particularly from shading, depending on the design and orientation of the home.
External shading is generally more effective than internal blinds because it can stop solar heat before it enters through the glass.
Households considering rooftop solar should assess the condition and orientation of the roof, surrounding shade and the household’s electricity-use patterns. Solar can deliver greater benefits when more electricity is consumed during daylight hours.
Consider the Full Return
An energy-efficiency upgrade does not need to deliver immediate savings on the power bill to provide value.
Better insulation can improve comfort and reduce condensation, efficient equipment may lower running and maintenance costs, and draught stopping can reduce noise and unwanted temperature changes.
Consider the upfront cost, expected operating savings, maintenance requirements and how long you expect to remain in the property.
Homeowners should also check whether any current government, council, electricity retailer or energy-efficiency programmes are available to help with the cost of insulation, heating or other upgrades.
For many homes, the most effective approach starts with the building itself. Address draughts, insulation, moisture and inefficient ducting before investing heavily in new equipment.
By tackling the biggest sources of heat loss and unnecessary energy use this spring, homeowners can prepare their homes for summer while improving comfort and reducing running costs throughout the year.
The information provided in this blog is for general informational purposes only and is not intended as tax, legal, or financial advice. We are not tax professionals. Readers should consult their own tax advisor or accountant for guidance specific to their circumstances.