Energy Consumption
Energy Consumption | Tankless Water Heater Install | Plumbing | Guild
Imagine instant, endless hot water every time you turn on the tap—no bulky tank, no standby heat loss, just pure efficiency. A tankless water heater install from HEP’s Energy Consumption Plumbing team in Guild swaps out yesterday’s cumbersome cylinders for sleek, on-demand technology that only heats what you use, when you use it. The result? Lower utility bills, reclaimed closet space, and a greener footprint, all without sacrificing a single steamy shower.
Our licensed, local technicians handle everything from sizing and venting to code-compliant hookups, so you can enjoy the perks of precision engineering without lifting a wrench. Backed by transparent pricing, fast scheduling, and HEP’s satisfaction guarantee, your upgrade is as effortless as the endless hot water it delivers. Ready to elevate comfort and cut costs? Let’s make it happen today.
FAQs
How much energy can I expect to save by installing a tankless water heater in Guild?
A properly sized, ENERGY-STAR® certified tankless unit can reduce water-heating energy use by 30-50 % compared with a conventional storage tank. For an average Guild household that spends about £300 a year on water heating, that translates to £90–£150 in annual savings, or roughly 1 200–1 800 kWh (or 3–5 therms of gas per month) depending on the fuel you use. Savings are highest for homes that use less than 41 gallons (≈185 litres) of hot water per day, have long stretches between draws, or frequently run out of hot water with a tank system.
How does a tankless water heater produce hot water without a storage tank?
When you open a hot-water tap, a flow sensor tells the unit’s control board to fire the gas burner or energize the electric heating elements. Water passes through a heat exchanger, absorbing just enough heat to reach the set temperature before it leaves the unit—typically within 2-3 seconds. Because there’s no standby tank, the heater only consumes energy when hot water is actually being used, eliminating the thermal loss that occurs while a traditional cylinder keeps 150–200 litres of water hot 24/7.
Is my existing plumbing, gas, or electrical service compatible with a tankless system?
Most Guild homes can accommodate a tankless heater, but a site visit is necessary to confirm three things: 1. Gas supply: High-output gas models need a ¾-inch line delivering 125–200 ft³/h and Category III (or concentric) venting through an exterior wall or the roof. 2. Electrical: Even gas units require a 120 V outlet for ignition and controls (≈0.5 A). Whole-house electric models call for 120–150 A of 240 V service on dedicated breakers, which some older panels cannot provide without an upgrade. 3. Water lines: Standard ¾-inch cold and hot lines near the install location work fine; we also add a bypass and service valves for future maintenance. Our estimator will verify code compliance and provide upgrade options if any of these items fall short.
What size (GPM) tankless water heater do I need for my household?
Sizing is based on simultaneous hot-water demand and desired temperature rise. For example, running a shower (2.0 GPM at 40 °C) and a sink (1.0 GPM at 40 °C) together requires 3 GPM at a 25 °C rise (Guild’s groundwater averages 10–12 °C). A family of four that might run two showers plus a dishwasher at once should target 7–9 GPM. We calculate the worst-case scenario during your quote, then recommend either a single high-capacity unit or two smaller units in parallel to guarantee unlimited hot water without wasting energy on excess capacity.
What does the installation process look like and how long will it take?
1. Site inspection & permit filing (1–2 days) 2. Removal of the old tank, carpentry to mount the new unit, and rerouting water lines (½ day) 3. Gas or electrical upgrades and condensate/vent piping (½–1 day) 4. Commissioning: flushing lines, programming temperature, and performing a combustion or amperage test (1–2 hours) Most single-family installations in Guild are completed in one full workday. Multi-unit or panel upgrades can extend the job to two days. All work is inspected to BS 6798 and local building codes before final sign-off.
What maintenance is required and how long will a tankless water heater last?
Descaling the heat exchanger once a year (twice if you have very hard water) with a vinegar or citric-acid solution prevents mineral build-up and keeps efficiency above 95 %. Cleaning the inlet screen annually and checking the condensate drain are also recommended. When maintained, gas units last 20–25 years and electric units 15–20 years—about double the life expectancy of a storage tank. We offer low-cost service plans that include yearly descaling, full performance checks, and priority repair scheduling.