Case Study: Swansea Family Saves £400 Annually After Full Home Upgrade
When the Williams family contacted us about their draughty 1970s semi-detached home in Swansea, they were spending over £2,000 a year on heating. Here's how we transformed their home with fully-funded ECO4 upgrades.
The Challenge
The Williams family—parents and two young children—had lived in their 3-bedroom semi for eight years. Despite keeping the heating on constantly during winter, the house never felt warm. The children's bedrooms were particularly cold, and condensation on windows was a constant problem.
Their 18-year-old boiler was inefficient and unreliable, breaking down twice the previous winter. With energy bills climbing and the boiler on its last legs, they knew something had to change.
Our Assessment
Our surveyor identified several issues: the loft had only 50mm of old, compressed insulation (current standards require 300mm), the cavity walls were completely uninsulated, and the boiler was operating at around 65% efficiency.
What We Installed:
- 300mm loft insulation throughout
- Full cavity wall insulation
- New Worcester A-rated combi boiler
- Smart thermostat with room controls
The Results
The transformation was immediate. The family noticed the difference within days of the work being completed. The house now holds heat properly, the children's bedrooms are comfortable, and the condensation problems have disappeared.
Most importantly, their energy bills dropped from over £2,000 to around £1,600 per year—a saving of £400 annually. With the new boiler's 10-year warranty and the long-term benefits of insulation, the Williams family are set for years of comfortable, affordable heating.
"We can't believe the difference. The house is actually warm now, and we're not dreading the energy bills anymore. The whole process was straightforward—C&T handled everything from start to finish."
Cost to the Family
Because the Williams family qualified for ECO4 funding through the LA Flex scheme (household income under £31,000), the entire upgrade was fully funded. They paid nothing for work that would typically cost over £8,000.
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Could This Be You?
Homeowners across Swansea, Cardiff, Neath, Bristol, and Bath could qualify for free energy upgrades. ECO4 runs until December 2026 — check your eligibility today.
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