Energy costs are one of the biggest controllable expenses in holiday rental management. Here's a practical guide to reducing bills without compromising the guest experience.
For most holiday rental hosts, energy is among the top three controllable operating costs — sitting alongside cleaning and maintenance. Unlike some costs (OTA commission, for example), energy spend is directly influenced by how the property is built, equipped, and managed.
The post-2021 energy price shock in the UK and across Europe permanently changed the maths for many hosts. Properties that were marginally profitable at pre-crisis energy rates became a genuine drag on returns. Even as prices have moderated somewhat, they remain significantly higher than the baseline that informed many investment decisions.
More positively: energy efficiency is one of the few areas where an upfront investment generates a calculable, recurring return. A property that costs £200 less per month to heat and power saves £2,400 per year — forever. That's a return that doesn't depend on bookings, pricing, or platform algorithms.
This guide covers the full spectrum of energy efficiency improvements for holiday rentals: quick wins that cost almost nothing, mid-range interventions with clear payback periods, and larger structural improvements worth considering if you're planning significant renovation.
Before making improvements, understand where your energy is actually going. For a typical UK holiday home, the approximate breakdown is:
This profile tells you where the biggest gains are. Heating is where the money is. Appliances and lighting improvements are worthwhile but will never have the impact of improving the thermal envelope or heating system efficiency.
If your property has a smart meter, use the In-Home Display (IHD) or your energy supplier's app to track daily consumption. This gives you a baseline and lets you see the impact of improvements over time.
For more detail, a clamp-on energy monitor (Hildebrand Glow, Emporia Vue) attaches to your consumer unit without any electrical work and shows real-time consumption by circuit. If something is drawing an unexpected amount of power — a malfunctioning refrigerator, a faulty immersion heater — you'll spot it quickly.
An Energy Performance Certificate (EPC) rates your property from A (most efficient) to G (least efficient) and provides a list of recommended improvements with estimated cost and savings for each. An EPC assessment costs £60–120 and is often required for holiday let compliance anyway.
The recommendations in an EPC are a useful starting framework, but they're calculated on generic assumptions. Your actual savings may differ based on how the property is used and managed.
Draught proofing is consistently one of the highest-ROI interventions for older UK properties. Gap-filling around doors, windows, letterboxes, and floorboards can reduce heating bills by 10–25% in a draughty property.
Products:
A common oversight is leaving the thermostat set too high between stays. Every degree higher costs approximately 3% more to heat. A setting of 12°C during empty periods (frost protection) is sufficient to prevent damage in all but the most extreme UK winters.
For in-stay periods, set the thermostat to a default of 20°C and make clear in your house manual how guests can adjust it. A pre-set temperature is kinder to energy bills than leaving guests to discover the controls and turn everything up to 25°C on arrival.
If your property still has any halogen or incandescent bulbs, replace them immediately. LED equivalents use 80–90% less electricity and last 15–25 times longer.
A property with 10 devices on standby can draw 50–100W continuously — adding up to around £100–200 per year in wasted electricity (at current UK rates). Smart plugs or multi-socket strips with switches on entertainment systems, gaming consoles, and seldom-used appliances pay for themselves within months.
A smart thermostat (Hive, tado°, Nest) allows:
For a holiday rental, the remote control capability is the most valuable feature. Being able to set the heating to start 2 hours before guest arrival — rather than running all day — saves significantly over the course of a season.
Estimated annual saving: £150–300 for an average UK property, depending on occupancy pattern and previous thermostat quality. Payback typically within 1–2 seasons.
Aerated or flow-restricting shower heads reduce water flow from a typical 12–15 litres/minute to 6–8 litres/minute without a noticeable reduction in shower experience (the air injection maintains pressure feel). For a property with one or two bathrooms, this can reduce hot water energy use by 30–40%.
A decent eco shower head costs £20–60. Payback is typically within a few months.
If your property has a wet central heating system but lacks TRVs (or has old, poorly calibrated ones), installing modern programmable TRVs on each radiator allows room-by-room temperature control. Unused rooms (a second bedroom when only two guests are staying) can be kept cooler without affecting the main living areas.
Modern TRVs with smart functionality (Danfoss Eco, tado° radiator thermostats) can be controlled remotely and integrated with your main thermostat schedule.
Estimated annual saving: £100–200, depending on property size and usage pattern.
If your property has a hot water cylinder (common in older properties without a combi boiler), check whether it has a modern insulation jacket. An uninsulated or poorly insulated cylinder loses heat continuously, requiring the immersion heater to cycle on frequently to maintain temperature.
A cylinder jacket costs £15–30 and fits any standard cylinder. If the cylinder itself is old and poorly insulated (it won't have the same dense foam insulation as modern cylinders), consider replacement — modern cylinders lose significantly less heat.
Heat rises. In a property with inadequate loft insulation, a substantial portion of your heating spend is literally escaping through the roof. Current Building Regulations recommend 270mm of mineral wool insulation in loft spaces. Many older UK properties have 100mm or less.
Cost of upgrading loft insulation in a typical semi-detached or detached property: £300–600 installed (lower if it's a simple top-up of existing insulation; higher for a full installation in a complex roof space).
Estimated annual saving: £150–300. Payback within 2–3 years.
For properties built between approximately 1920 and 1990 with unfilled cavity walls, cavity wall insulation is one of the most cost-effective thermal improvements available. Injected mineral wool or polyurethane beads reduce heat loss through external walls significantly.
Cost: £400–1,000 for a typical property. Some properties qualify for government grants via the ECO4 scheme (aimed primarily at owner-occupied homes, but holiday lets on tariffs with smart meters may qualify — worth checking with installers).
Estimated annual saving: £200–400.
A boiler more than 12–15 years old is likely running at 70–80% efficiency. Modern condensing boilers operate at 90–94% efficiency. For a property with significant heating costs, the difference is meaningful.
Cost: £2,000–4,000 installed. The financial case for boiler replacement depends heavily on the existing boiler's condition — a well-maintained older boiler may not justify replacement on efficiency grounds alone, but a failing or unreliable boiler often does when total cost of ownership is considered.
Note: From 2025 onwards, UK policy is increasingly pushing toward heat pumps as a replacement for gas boilers. Heat pumps are more efficient than gas boilers (a well-installed air source heat pump operates at 300–400% efficiency vs. 90% for a gas boiler) but have higher installation costs (£7,000–13,000, partly offset by the Boiler Upgrade Scheme grant of £7,500). For a property with good insulation, a heat pump is worth serious consideration. For a poorly insulated property, improve the insulation first.
For holiday homes with south-facing roof space, solar PV panels can generate a significant portion of summer electricity needs. The payback period for a 4kW system at current electricity prices is typically 6–9 years — less if the property qualifies for Smart Export Guarantee (SEG) payments for excess generation.
For holiday rentals specifically, solar generation is most valuable during peak summer season when both bookings and solar production are highest — a good match. If you also have a hot water cylinder with an immersion heater, a solar diverter (Immersun, Eddi) can route excess generation directly to heat water, maximising self-consumption.
Capital improvements only go so far. Guest behaviour significantly affects energy consumption — and it's rarely malicious. Guests in a holiday home are simply less energy-conscious than at home because they're not paying the bill.
Include a clear, friendly section on energy use:
Frame it in terms of environmental responsibility rather than cost — guests respond better to "help us keep this property sustainable" than to "don't waste our energy budget".
Your checkout instructions should include a brief energy checklist:
A smart thermostat that resets to a minimum temperature at the scheduled checkout time provides a backstop regardless of whether guests follow the instructions.
Energy efficiency is increasingly a factor in guest decision-making, particularly for eco-conscious travellers who represent a growing segment of the UK and European holiday rental market. If your property has solar panels, good insulation, heat pump heating, or other green credentials, highlight them in your listing.
Specific things worth mentioning:
These details differentiate your listing in a crowded market and can justify a price premium with the right guest segment.
If you're working through energy improvements and want to sequence them logically:
Don't let the magnitude of the later categories put you off the earlier ones. The free and low-cost interventions, consistently applied, can reduce bills by 20–30%. That's a meaningful annual saving in any property.
LetPilot helps you schedule preventive maintenance and energy-related tasks — boiler services, filter cleans, thermostat checks — so your property runs efficiently year-round and nothing falls through the cracks between seasons. Try LetPilot free at letpilot.co — no credit card required.