When carrying out a retrofit installation, ensuring proper ventilation is just as important as improving insulation and energy efficiency. Without adequate airflow, moisture can build up, leading to condensation, damp, and even mould—affecting both your home and your health. At Stellar Energy, we assess ventilation needs alongside every measure, ensuring your home remains comfortable, energy-efficient, and well-ventilated for a healthier living environment. We fit the following to ensure the above:

1. Non invasive trickle vents to go in the windows.

2. Undercuts on internal doors so that air can circulate around the property.

3. Extractor fans in the bathrooms and kitchens to allow the moisture to escape, but not the heat.

A representative of ours will attend your property prior to installation to explain this to you before commencing the work.

25% of all heat lost in a home goes up and out through the roof, which means claiming free roof insulation could make your home much warmer and cheaper to heat. Put simply, room in roof, or attic room insulation, insulates sloping ceilings and walls with a 62mm insulation board. Sloping ceilings have wooden beams in them and we fix an insulation board on them by screwing into it. The boards are then plastered over, and can then be redecorated. This prevents the heat from your home rising up to the top floor and then escaping out and into the atmosphere, saving you money.

Heat rises up and out of your house through the roof. Loft insulation locks in the heat that is given off by the heaters in your home. Installing loft insulation in your attic makes a noticeable difference and the temperature change can be felt as soon as the install is complete. The installation process is quick and easy, usually taking less than 3 hours. Taking advantage of free loft insulation grants is a great place to start if you want to make your home warmer and cheaper to heat.

The first-time central heating grant is offered to households that have never had a boiler or radiators before. Homes heated by electric, coal, wood, or those with no heating at all, will be eligible. A liquified petroleum gas (LPG) tank can be installed in the garden of your property above ground and then a boiler connected to radiators is fitted within your property. There are guidelines that must be followed when installing large LPG tanks, for example there must be a 3 meter clearance from any combustible object or barrier like bushes or a shed. So larger gardens and detached homes usually pass the criteria for this grant. The grant will also allow the first-time heating grant to be applied to homes that have mains gas used for cooking, but don’t have the central heating system installed.

Free High Heat Retention (HHR) storage heaters are far more energy efficient than the old heaters that existed years ago! Their high heat retention properties allow them to retain more heat for longer. They work by using the economy 7 tariff that uses the low rate of kwh per pence between 1am – 7am in the morning. So when you’re sleeping, they’re charging or storing the heat in the special bricks inside of them. The bricks store the heat and release it throughout the day gradually. They have an LED setting and look much nicer than old heaters. Your current energy provider, like EON, will install a new second meter for you that is a dual tariff or economy 7. This will tap into the cheaper rate of electricity for the HHR storage heaters to work off. There are 3 different strength heaters HHR20, HHR30 and the HHR40 – all very expensive to buy privately but free under the scheme with us.

Cavity Wall Insulation stores heat within the inner walls, bouncing it back into the room and holding it for longer. This gives you a more even temperature and eliminates draughts that come down from the walls. The cavity is located between the inner and outer brickwork of the property, ideally around 50mm wide. The main materials we use are the EPS bead (polystyrene bead). Cavity Wall Insulation can reduce your heating bills, minimise wear and tear on your boiler, and combat climate change. Some insurance backed guarantees can cover you for up to 25 years.

Internal wall insulation is like wrapping your home in a blanket, or wrapping a teapot in a tea cosy to keep it warmer for longer! Internal wall insulation will retain heat in your home just like that tea cosy would, by adding a thermal layer of material to the existing wall to keep your home warmer for longer when you put your heating on. Insulating your solid walls will cut your heating costs considerably. There is very little disruption as the workers are highly skilled and always take good care when working inside customers’ premises. The typical installation time varies depending on the size of your home. If you live in a bigger house, with 5 bedrooms for example, then the work can take up to 10 days. If you live in a smaller flat, it should take around 3 days to complete. Solid wall insulation is suitable for a variety of property types including brick, stone, steel-framed and concrete construction.

Solar panels work by converting energy from sunlight into electricity using photovoltaic (PV) cells made of semiconductor materials like silicon. When sunlight hits the cells, it excites electrons in the semiconductor material, creating an electric current. The PV cells are grouped into panels connected to an inverter that converts the direct current (DC) generated by the panels into a safer alternating current (AC) used by most home appliances. The efficiency of solar panels depends on factors like the angle of sunlight, panel quality, and weather conditions. The electricity can be used immediately, or exported back into the grid for compensation.

An air source heat pump (ASHP) is a device that transfers heat from outside to inside to heat, and in some cases, cool a building. It works similarly to a fridge in reverse, by absorbing heat from outdoor air, even at low temperatures, and using a refrigerant to pump this heat indoors. This in turn heats your home through radiators or underfloor heating. It can also heat water stored in a hot water cylinder for your hot taps, showers, and baths.

ASHPs are an energy-efficient alternative to traditional heating systems because instead of generating heat by burning fuel, they move it from one place to another, reducing energy bills and carbon emissions.