Energy-efficient Models
Energy-efficient Models | Tank Water Heater | Plumbing | Bristol
Whether you’re braving a frosty Bristol morning or rinsing off after a muddy hike over the Downs, you need hot water that’s ready when you are. HEP’s energy-efficient models deliver the steady comfort of a tank water heater while trimming utility bills and lowering carbon footprints. Built with advanced insulation and high-performance burners, our units keep water piping hot without wasting energy—so you enjoy reliable warmth and measurable savings all year round.
Local specialists handle every detail, from sizing and fast installation to ongoing maintenance, ensuring decades of worry-free service. Choose HEP and get a partner who understands Bristol’s water quality, building codes, and sustainability goals as well as you understand the value of a long, relaxing shower. Call today to discover rebates, schedule a free estimate, and let our expert plumbers upgrade your home with uncompromising efficiency.
FAQs
What makes an energy-efficient tank water heater different from a standard model?
Modern high-efficiency hot-water cylinders use thicker foam insulation, high-performance heat-exchange coils and smart thermostats to limit heat loss and cut the energy needed to re-heat stored water. Gas models often include condensing technology to capture heat from the flue gases, while electric units may be hybrid heat-pump designs that draw heat from the ambient air. All of the products we install meet or exceed the UK Ecodesign (ErP) A rating, meaning they use up to 50 % less energy than many legacy cylinders still found in Bristol homes.
How much can I expect to save on my energy bills in Bristol by upgrading?
Savings depend on your current heater’s age and fuel type, but households that switch from a 10- to 15-year-old standard cylinder to a new A-rated model typically see water-heating costs fall by £60–£120 per year. For homes moving from an old, non-condensing gas tank to a hybrid heat-pump cylinder the saving can exceed £150 annually. Over a system’s 12–15 year lifespan that equates to £1,000–£1,800 in lower energy bills—more than offsetting the purchase premium.
What size energy-efficient tank water heater do I need for my household?
Sizing is based on the number of occupants and simultaneous hot-water tasks. As a rule of thumb: • 1–2 people: 90–120 L (20–26 gal) • 3–4 people: 150 L (33 gal) • 4–5 people: 180 L (40 gal) • 6+ people or multiple bathrooms: 210–300 L (46–66 gal) We also look at the cylinder’s First-Hour Rating (how much hot water it can deliver in the busiest 60 minutes) and your boiler or heat-pump capacity. During a free site survey our engineer will calculate the exact volume required so you never run out of hot water yet avoid overheating a tank that’s larger than necessary.
Are there any government incentives or grants available in Bristol to help cover the cost of an energy-efficient cylinder?
Yes. Although incentives change periodically, at present homeowners may qualify for: • ECO4: If you receive certain benefits, the Energy Company Obligation can cover part or all of the upgrade, especially when combined with wider insulation measures. • Boiler Upgrade Scheme: While primarily aimed at heat pumps, hybrid heat-pump water heaters that replace direct-electric cylinders can sometimes be included—grant value up to £5,000. • 5 % VAT: Most energy-saving materials, including high-efficiency cylinders, are currently subject to 0–5 % VAT instead of the standard 20 %, automatically reducing the purchase price. Our office will confirm eligibility and even help with the paperwork.
How long does installation take and will my hot water be interrupted?
A straightforward like-for-like swap normally takes 4–6 hours: drain and remove the old tank, position the new unit, connect pipework, wire controls and refill the system. If we need to relocate the cylinder, upgrade flues or add a condensate drain, allow a full working day. Your hot water will be off only during the swap, and we always aim to restore supply before early evening. We schedule installations at times that minimise disruption for families and businesses in Bristol.
What maintenance is required to keep an energy-efficient tank water heater performing at its best?
Regular maintenance is simple but crucial: 1. Annual service: Our Gas Safe (or NICEIC for electric) engineer inspects insulation, thermostat calibration, safety valves and—on gas units—the burner and flue. 2. Tank flush: Draining a few litres every 6–12 months removes limescale and sediment that act as insulation inside the cylinder, preserving efficiency and capacity. 3. Anode rod replacement: For steel glass-lined tanks, change the sacrificial anode every 3–5 years to prevent corrosion. 4. Thermostat setting: Keep water at 60 °C to balance legionella protection with energy saving. Follow these steps and your high-efficiency cylinder should deliver 12–15 years of trouble-free, low-cost hot water.