Even with grants and funding available for homes in the UK to help with the energy crisis, homeowners are still feeling the pressure of energy bills. Many homes still use systems that were there when they moved in 10-20 years ago, with gas boilers starting to become outdated and falling behind when it comes to efficiency. In today’s blog, we will be looking at the UK’s most economical heating systems and the best options to heat your home for the foreseeable future.
Ways you can heat a home in the UK
In UK homes, there are many ways you can heat the property and the rooms within it.
- Gas central heating
- Fossil fuel burners (oil LPG)
- Electric heating systems
- Low carbon/ renewable heating
How do gas boilers work?
A traditional gas boiler works by burning natural gas or liquefied petroleum gas (LPG) to generate heat. This heat is transferred to water through a metal component called a heat exchanger. The heated water is then circulated through your central heating system to warm radiators or directed to taps and showers to provide hot water when needed.
Gas boilers, as we know them in modern homes, boomed in the 1960s, but were not the most efficient way to heat a home. Boilers performed with an efficiency of 60% to 70%, with poorly maintained units falling to only 55% efficiency. In 2005, new building regulations in the UK required all new replacement gas boilers to be high-efficiency condensing models. This created a leap in efficiency, with these newer units being upwards of 90% efficient.
Gas boilers, however, are bad for the environment as they primarily burn fossil fuels. Burning natural gas releases CO₂, which leads to global warming, leaving a massive mark on climate change. This creation of high carbon accounts for a significant 15% of national carbon emissions in the UK. Gas Boilers also have their own health and safety risks, including a number of gas leaks, which can be deadly.
How do heat pumps work?
Heat pumps are an eco-friendly and cost-effective way to heat and cool your home or business. These systems work by transferring heat from the air into your building, providing a highly efficient alternative to traditional heating systems like gas boilers or electric heaters. Whether it’s winter or summer, heat pumps offer a versatile and sustainable solution to maintaining comfortable temperatures year-round.
Heat pumps are powered by renewable energy sources, making them an eco-friendly alternative to fossil fuels. By making the switch, you’ll be contributing to the reduction of greenhouse gas emissions and helping combat climate change.
What is the Coefficient of Performance?
COP stands for Coefficient of Performance, a metric used to measure the efficiency of heating or cooling in a heating or cooling system. This could be for a fridge, air conditioner, or even a heat pump.
The COP indicates the ratio of heat output to the electricity required to operate it a heat pump. A good COP or SCOP will have a higher heat output than the energy input.
The COP of a heat pump usually sits around 2.0 to 5.0, meaning that it is producing 2 to 5 units of heat. When looking at the efficiency of that heat pump, it means that it would be between 200% and 500% efficient, which is massive for a house’s savings.
There is also a Seasonal Coefficient of Performance, which looks at the efficiency of a heating system throughout the entire heating season and not just any given moment. This allows customers to understand how the system will run throughout the year, giving a more accurate measurement of their savings.
Grants available for heat pumps
With increasing government support for renewable energy solutions, heat pumps are eligible for grants or incentives to help with installation costs up to £9,000.
The Boiler Upgrade Scheme was launched in 2022 as a way to reach net-zero targets by replacing LPG heating systems with renewable heat pumps. The scheme was raised from £7,500 to £9,000 in April this year, allowing even more homes to go green.
The UK government also announced a £15 billion Warm Homes Plan that allowed low-income households to upgrade their homes to be more sustainable with systems such as solar panels, batteries and heat pumps.
When is the best time to replace a gas boiler with a heat pump?
According to USwitch, approximately 80% of homes still rely on gas central heating and gas boilers to heat their homes. This is such a high number, especially considering the UK’s push for Net-Zero by 2050. Here are a few of the signs that a gas boiler needs to be replaced:
- If a boiler is 10 to 15 years old or older.
- If there are costly fixes to the boiler more and more often.
- If there are rising bills even with normal heating habits staying the same.
- Any strange noises or leaks that could be early signs of damage or end of life.
If any of these points sound familiar, it’s important to get an engineer to check your boiler and look at a heat pump as an alternative source of heating for your home. The best times are the year to get your gas boiler replaced with a heat pump is during the warmer months, so that you won’t freeze whilst the installation takes place.
Common concerns with a heat pump
Whilst heat pumps are a fantastic way of heating your home more efficiently, they also come with a lot of negative press and opinions. Common complaints include the initial installation cost. With any renewable system, you need to view it as an investment. Similar to buying a car or mortgaging a house, renewables will be a purchase you will have to pay for for a long time. The difference with renewables is the fact that they will save you money, meaning that there is a payback time. If you are switching from an LPG or electric heating system, your payback time is much faster, given that those other systems cost much more to run.
Another complaint we have heard is the sound and disturbance a heat pump makes. We use Vaillant heat pumps for our installs, and in the video below, you can hear just how quiet heat pumps actually are!
If you currently have a gas boiler in your home and you think it’s time for a change, you can get in touch with our knowledgeable team to book a discovery call. We can guide you on your renewables journey into creating a sustainable system that will keep your home comfortable and your energy bills lower.
