Energy Bills
Energy Bills | Tankless Water Heater Install | Plumbing | Mascot
At HEP’s Energy Bills Plumbing, we help Mascot homeowners kick rising costs to the curb with a precision tankless water heater install that delivers endless hot water the instant you twist the tap. Our licensed plumbers remove clunky storage tanks, mount a space-saving unit on the wall, and fine-tune it to your family’s flow rate—cutting energy use by up to 40 % and freeing up valuable cupboard space in one tidy visit.
From disposing of your old heater to handling gas or electrical upgrades and council paperwork, we manage the entire project under a rock-solid workmanship guarantee. Expect quieter operation, cleaner water, and a future of lower bills—plus the peace of mind that comes with round-the-clock local support from a Mascot crew who treats your home as their own. Ready to heat smarter? Give HEP a call and feel the difference with tomorrow’s hot water technology today.
FAQs
How does installing a tankless water heater lower my energy bills in Mascot?
Traditional storage heaters keep 50–160 L of water hot 24/7, so up to 30 % of the energy they consume is lost through standby heat. A tankless (instantaneous) unit only fires when you open a tap, cutting standby losses to nearly zero. In Mascot’s mild climate, a correctly sized gas or electric tankless system can trim water-heating costs by 20–40 % compared with a standard tank. Because the burner or element modulates, it also delivers just the amount of heat needed, which further reduces your quarterly energy bill.
What size tankless water heater do I need for my Mascot home?
Size is based on flow rate (litres per minute) and temperature rise. Most Mascot households require 15–26 L/min. Count the fixtures you may use simultaneously—for example, one shower (8 L/min) + a kitchen sink (6 L/min) equals 14 L/min, so a 16 L/min unit would cover you. Gas models handle larger flows; electric units may need multiple undersink boosters. Our plumbers will do a site inspection, measure incoming water temperature (about 18 °C in Mascot), and calculate the exact unit to give you endless hot water without overspending on capacity.
Are there government rebates or incentives for tankless water heaters in Mascot?
Yes. Under the NSW Energy Savings Scheme (ESS) and the Federal Small-scale Renewable Energy Scheme (SRES), eligible high-efficiency gas or heat-pump–type tankless units earn Energy Savings Certificates (ESCs) and Small-scale Technology Certificates (STCs). We apply these at the point of sale, cutting $200–$900 off the install price. Additional rebates are sometimes offered by Sydney Water for low-flow fixtures installed alongside. We’ll process all paperwork so you get the maximum upfront discount.
How long will the installation take, and will I be without hot water?
A straightforward replacement of an outdoor gas storage tank with an external tankless unit takes 3–5 hours. Converting an indoor electric tank to an outdoor gas or heat-pump tankless system can take a full day because it involves new gas or refrigerant lines, flueing, and electrical isolation. You’ll be without hot water only while the old system is disconnected—typically 1–2 hours. We schedule installations to minimise disruption and ensure you have hot water again before we leave.
What maintenance does a tankless water heater need to keep running efficiently?
Tankless units require an annual flush with white vinegar or a descaling solution to remove limescale from the heat exchanger—a 45-minute procedure our technicians can handle during a routine service call. We also clean the inlet screen filter, check gas pressure, and update firmware (on smart models). In Mascot’s moderately hard water, descaling once a year preserves the 5–12 year warranty and maintains peak efficiency, keeping your energy bills low.
Can a tankless water heater be retrofitted to my existing plumbing in Mascot, and how much will it cost?
In most homes, yes. External walls adjacent to the existing hot-water line are ideal because we can reuse the plumbing and minimise drilling. If you’re switching from electric to gas, we’ll install a compliant gas line and flue. Typical retrofit costs in Mascot range from $1,800 for a like-for-like outdoor gas swap to $3,500–$4,500 for a full conversion with electrical upgrades, new gas meter sizing, and council-approved flueing. After rebates, payback through energy savings is usually 3–5 years.