- HEP Plumbing
- Long-term Savings

Long-term Savings
Long-term Savings | Tankless Water Heater Install | Plumbing | Mascot
Imagine never running out of hot water during a chilly Mascot morning shower and watching your energy bills dip month after month. HEP’s long-term savings plumbing experts make it happen with seamless tankless water heater install services that fit your home, your budget, and your busy schedule. Our certified technicians remove bulky, inefficient tanks and replace them with sleek, on-demand technology that heats water only when you need it—freeing up space and slashing standby energy loss.
From the first phone call to the final performance check, we focus on reliability, safety, and long-term payback. You’ll enjoy endless hot water, up to 40% energy savings, and the peace of mind that comes from HEP’s industry-leading warranties and courteous local service. Ready to future-proof your home? Schedule your tankless water heater install today and start enjoying the comfort and savings Mascot homeowners deserve.
FAQs
How much can I expect to save on energy bills with a tankless water heater in Mascot?
Households that convert from a conventional storage tank to a correctly sized gas-fired tankless unit typically see 20-40 % lower water-heating costs. In Mascot, where natural-gas tariffs average about 4.5¢ per MJ, this translates to annual savings of roughly $120–$300 for a family of four. Electric tankless models save less on running costs but still eliminate standby losses, trimming 10-15 % off electricity use for hot water. Over the system’s 15-20-year life, cumulative savings can easily exceed $2,000 compared with a replacement storage heater.
Is my Mascot home suitable for a tankless system, or will I need major plumbing upgrades?
Most post-1990 dwellings in Mascot already have 20 mm gas lines and ¾" water lines that meet the minimum flow and pressure requirements for popular residential tankless units. During our free site inspection we confirm gas pipe sizing, ventilation clearances, and whether a 15 A circuit is available for electronic ignition. Older terraces sometimes need a larger gas branch line, typically a half-day job costing $300–$600. Because the heater is wall-mounted, no additional floor space or drain pan is required, and existing hot- and cold-water lines can almost always be reused.
How long does the installation process take, and will I be without hot water?
A straightforward change-over from a storage tank to an external gas tankless heater usually takes 4–6 hours. We schedule the work so that your hot water is off for only about 2 hours while final connections and commissioning are completed. If gas line upsizing or electrical upgrades are necessary, add another 2–3 hours. We can install temporary flex-hose bypasses to keep cold water flowing to taps throughout the job, and we remove and recycle the old tank at no extra charge.
What warranties and rebates are available for tankless water heaters in NSW?
Most major brands we supply—Rinnai, Rheem, Bosch—cover the heat exchanger for 10–12 years, other parts for 3–5 years, and labour for 1 year. As a licensed plumber and gas-fitter, we also provide a 6-year workmanship guarantee under NSW Fair Trading regulations. Because tankless units qualify as high-efficiency appliances, you may be eligible for Energy Savings Scheme (ESS) certificates, which can reduce the upfront cost by $100–$250. We handle the paperwork and apply the rebate as an instant discount on your invoice.
How does a tankless heater’s lifespan compare with a traditional storage tank?
A quality tankless unit typically lasts 15–20 years—about twice the average 8–10 year life of a vitreous-lined storage cylinder. The absence of standing water prevents rust and scale from corroding the heat exchanger. Annual descaling and a quick filter clean are all that’s needed to maintain peak efficiency, whereas storage tanks often require anode replacements and are prone to catastrophic leaks as they age.
What ongoing maintenance is required, and can you service my heater after installation?
We recommend a professional service every 12 months: flushing the heat exchanger with food-grade descaler, cleaning the inlet water filter, checking combustion efficiency, and updating firmware if applicable. The visit takes about 45 minutes and costs $165 including GST. Sediment levels in Mascot’s reticulated water supply are moderate, so routine maintenance keeps scale build-up in check and preserves your warranty. Our team keeps your model’s service history on file and sends annual reminders, or you can add maintenance to our discounted 3-year service plan.