Here are 7 plumbing-related changes that can help you cut energy use, reduce emissions, and improve your EPC score.
Table of Contents
1. Upgrade to a Condensing Boiler
Actions to take:
✅ Check your boiler’s age and model rating
✅ Look for an A-rated (ErP) condensing boiler
✅ Ask a local Gas Safe engineer for a quote. If you’re in London, check out our heating services here and feel free to call us on 020 7126 7126 whether you need advice or wish to improve your home’s efficiency and lower your bills.
2. Add Heating Controls
Actions to take:
✅ Install TRVs in main rooms
✅ Upgrade to a smart thermostat (e.g. Hive or Nest)
✅ Set heating zones or timed schedules
3. Insulate Hot Water Cylinders
Actions to take:
✅ Fit a BS 5615-compliant cylinder jacket (80mm thick)
✅ Insulate accessible hot water pipes too
4. Fit Low-Flow Showerheads
Actions to take:
✅ Choose a model under 8 litres/min
✅ Check for WRAS-approved products
✅ Fit easily to most standard UK hoses
5. Install Water-Efficient Taps
Less hot water used = less energy needed = better EPC outcomes.
Actions to take:
✅ Fit tap aerators to kitchen and bathroom taps
✅ Look for taps with flow restrictors
✅ Replace older basin taps with water-saving models
6. Improve Pipe Insulation
Actions to take:
✅ Use foam lagging on pipes in lofts, basements & airing cupboards
✅ Seal joins with insulation tape
✅ Avoid sharp bends or kinks in pipework
7. Add a Hot Water Recirculation Loop
Actions to take:
✅ Ask a plumber (call here) if your current system supports one
✅ Look for models with timers or thermostatic control
✅ Factor in energy savings vs installation cost
How To Improve EPC Ratings in Listed Buildings
Tips for listed homes:
✅ Focus on internal, reversible, and non-structural upgrades
✅ Avoid visible alterations without listed building consent
✅ Consult with a conservation-savvy plumber
We work with listed homes and heritage properties across London. If you need guidance before making plumbing-related improvements, give us a call on 020 7126 7126.
Need Help Improving Your Home's EPC?
✅ Friendly, expert plumbers
✅ Listed building specialists
✅ No-obligation quote & advice
Call us directly on 020 7126 7126 or request a quote here.
Plumbing Upgrades & EPC Rating FAQs
How much can a boiler upgrade improve my EPC rating?
Often by 5–15 points, depending on your previous boiler’s efficiency and system setup.
Are smart thermostats worth it for EPC?
Yes, they give better heating control, reduce wasted energy, and positively impact your score.
Do listed buildings need EPCs?
Yes, if they’re rented or sold, but certain exemptions apply. Still, energy efficiency upgrades can be made in most cases with the right guidance.
Will these upgrades increase my property value?
Yes, a better EPC rating often means higher resale value and lower running costs.
