- HEP Plumbing
- Continuous Flow

Continuous Flow
Continuous Flow | Tankless Water Heater Install | Plumbing | Mascot
Enjoy endless hot water and lower energy bills with HEP’s continuous flow plumbing experts in Mascot. Our qualified technicians size, supply, and complete your tankless water heater install with precision—so you can stop worrying about bulky storage tanks, scalding temperature swings, or surprise cold showers. We arrive with the latest diagnostic gear, tidy drop sheets, and genuine parts to keep downtime to an absolute minimum.
Locals love us for transparent quotes, punctual arrivals, and workmanship that’s backed by industry-leading warranties. Whether you’re upgrading a family home, fitting out an investment property, or replacing a tired unit that’s on its last legs, we tailor every solution to Mascot’s water quality and pressure conditions.
Book before noon and we’ll aim for same-day installation. Call, text, or book online—your next hot shower is just a quick chat with HEP away.
FAQs
What is a continuous-flow (tankless) water heater and how does it work?
A continuous-flow or tankless water heater heats water only when you turn on a tap. A sensor detects the flow, an electronic control board ignites a gas burner or powers an electric element, and water passes through a heat exchanger on its way to the outlet. Because there is no storage cylinder, the unit delivers hot water on demand for as long as the tap is open, eliminating stand-by heat losses associated with traditional tanks.
Why should I choose a continuous-flow unit over a traditional storage tank for my Mascot property?
• Endless hot water – great for households with high demand or multiple showers back-to-back. • Lower running costs – heating only the water you use can cut energy consumption by 20–40 % compared with many storage tanks. • Space saving – wall-mounted units free up floor area, ideal for Mascot’s terraces and apartments. • Reduced risk of leaks and flooding, as there is no large tank of stored water. • Environmentally friendly – higher efficiency and optional low-NOx burners help reduce carbon emissions. • Longer service life – 15–20 years on average, compared with 8–12 years for many storage cylinders.
What size tankless water heater do I need for my home in Mascot?
Sizing is based on flow rate (litres per minute) required at peak demand and the incoming water temperature. Count the number of fixtures likely to run at the same time—for example, two showers plus a sink may need 26–32 L/min. Most two-bathroom homes in Mascot choose a 20–26 L/min gas unit, while larger properties or those with spa baths may step up to 32 L/min. We perform a free on-site assessment, factoring in gas supply pressure, pipe lengths, and desired temperature to recommend the optimal model.
How long does installation take and will my water be turned off?
For a straightforward replacement in the same location, installation typically takes 4–6 hours. Relocating the heater, running a new gas line, or adding a flue through the roof can extend work to a full day. Water and gas are generally isolated for 1–2 hours during the switchover; we schedule this at a time that minimises disruption and restore services as quickly as possible. All old equipment and packaging are removed from site.
Are there any approvals or compliance requirements for installing a continuous-flow heater in Mascot?
Yes. NSW regulations require the work to be carried out by a licensed plumber/gasfitter. After installation we issue a Gas Compliance Certificate and lodge it with NSW Fair Trading. The unit itself must carry WaterMark and AS 4552 (gas) certifications, and a tempering valve is mandatory to limit bathroom hot-water temperature to 50 °C. If a new or upgraded gas meter is needed, we coordinate with Jemena on your behalf. No council Development Application is usually necessary unless the unit is fixed to a heritage façade.
What maintenance does a tankless water heater need and how long will it last?
Manufacturers recommend an annual service that includes flushing the heat exchanger with food-grade descaler, cleaning the inlet filter, checking burner operation, and verifying safety devices. In Mascot’s moderate-hardness water, descaling once every 12–18 months may be sufficient for domestic use. With regular maintenance, a quality unit can last 15–20 years or more. We offer affordable service plans and can handle warranty repairs if required.