High-efficiency Tankless System
High-efficiency Tankless System | Tankless Water Heater Install | Plumbing | Manchester
Imagine endless hot water on demand, lower utility bills, and a compact unit that frees up valuable space in your Manchester home. HEP’s high-efficiency tankless systems fire up the moment you turn on the tap, heating water only when you need it and wasting zero energy on standby. Our licensed technicians size the equipment precisely to your household’s flow rate, handle every permit, and complete most jobs in a single day—so you can start enjoying steamy showers and peace of mind right away.
Whether you’re replacing a bulky, outdated tank or outfitting a brand-new build, our tankless water heater install service pairs premium products with 24/7 support and industry-leading warranties. From the first inspection to the final test run, we keep you informed, leave the workspace spotless, and back our work with a satisfaction guarantee that’s as reliable as the hot water you’ll receive for years to come.
FAQs
How does a high-efficiency tankless water heater work, and why is it better than a traditional storage tank?
A high-efficiency (condensing) tankless unit heats water only when you open a hot-water tap. Powerful burners or electric elements instantaneously raise the temperature as water passes through a heat exchanger, so there is no standby tank of water losing heat all day. Condensing models capture extra heat from exhaust gases, pushing efficiencies to 94–98 %. This design saves 20-40 % on energy bills, delivers endless hot water, and frees up floor space compared with a bulky cylinder.
What size tankless system do I need for my Manchester home?
Sizing is based on flow rate (litres per minute) and temperature rise, not the number of bedrooms. We add up the simultaneous fixtures you want to run—for example, one shower (9 L/min) plus a kitchen tap (6 L/min) equals 15 L/min. Manchester’s incoming mains temperature averages 10 °C, so to reach a comfortable 50 °C you need a 40 °C rise. A 24–28 kW gas-fired condensing unit will usually cover a typical three-bathroom household, while larger homes may require 35 kW or a cascaded twin system. We perform a free on-site assessment to confirm the exact model.
How long does installation take, and will I be without hot water?
Most single-unit retrofits in Manchester take one working day (6–8 hours). We isolate the old cylinder, reroute water and gas lines, hang the new wall-mounted unit, fit the concentric flue through an external wall or roof, and commission the system. Your water supply is only shut off for 1-2 hours, and we schedule that window around your needs. If you are replacing a gravity-fed vented cylinder, we may add half a day for pipework modifications.
Do I need planning permission or permits in Manchester, and do you handle them?
Domestic properties generally don’t need planning permission for a like-for-like boiler swap, but Building Regulations Part L and Gas Safe rules require a competent installer to notify the council of the appliance change. We’re Gas Safe-registered and handle the whole process: flue-terminal placement checks, condensate discharge compliance, combustion analysis certificate, and electronic Building Control notification, after which you receive your compliance certificate by post.
What energy savings and payback period can I expect?
Switching from a non-condensing storage boiler with a 60 % seasonal efficiency to a 96 % condensing tankless unit can cut gas consumption by roughly 35 %. For a typical Manchester household spending £800 a year on water heating, that’s about £280 saved annually. With installed costs starting around £1,900, simple payback is roughly 7 years—often shorter if you replace an aging boiler anyway or take advantage of manufacturer cashback offers. You also reduce carbon emissions by 0.6–0.8 tonnes of CO₂ per year.
How much maintenance does a tankless water heater need, and can you service it?
To keep the warranty valid and maintain top efficiency, manufacturers recommend an annual service. We descale the heat exchanger with food-grade citric acid (hard water in Greater Manchester averages 200 ppm CaCO₃), clean the combustion chamber, inspect the fan, sensors, and condensate trap, and run a full combustion analysis. Service visits take about one hour and cost less than a traditional boiler service because there’s no tank to drain. We offer discounted multi-year maintenance plans for added peace of mind.