Hot Water Systems in Underwood
The 4119 postcode, covering Underwood and surrounding areas, is home to around 2,265 households. With many households already generating their own clean solar power, many are now looking at how they can make their entire home energy system more efficient, with hot water heating often the logical next step.
With hot water roughly accounting for a quarter of the average home's energy use, switching to an energy-efficient hot water system is one of the biggest opportunities for savings. Across Underwood and the 4119 area, 284 homeowners have already switched from older electric storage and gas hot water systems to solar hot water or air-source heat pump systems that draw on clean, renewable power while also claiming the hot water rebates to reduce their hot water heater system cost. These highly-efficient systems not only help cut energy bills but also reduce carbon emissions and improve overall energy independence.
With Underwood's climate delivering an average of 5.1 kWh/m² per day, conditions are ideal for hot water systems and hybrid heat pump systems that harness both sunlight and ambient air temperature to heat water efficiently all year round. When paired with existing rooftop solar power or solar batteries, the result is hot water that costs far less to run and is powered by clean, self-generated energy.
Hot Water Ranking
Postcode 4119
186th
State Wide
836th
Australia Wide
Hot Water Installation Underwood
Estimated daily energy to heat household water, comparing a resistive electric element with a high-efficiency heat pump. Demand shifts month-to-month using local climate patterns.
Energy Efficient Hot Water & Solar Power Underwood
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterUnderwood
Illustrates how a typical 6.6 kW rooftop solar system can offset the daytime energy demand of a COP 5 heat pump hot water unit.
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Heat Pump Hot Water Systems for Underwood
Compare heat pump hot water systems suitable for Underwood's climate. These energy-efficient systems are designed to work in local temperature conditions and can significantly reduce your hot water energy costs.
Community Hot Water Statistics - Underwood, 4119
Hot Water Demographics - Underwood
Based on the Australian Bureau of Statistics 2021 Census (ABS), Underwood has around 2,265 private dwellings, home to approximately 6,554 people. With an average household size of 3.1 people, and around 50 litres of hot water used per person each day in Australia, Underwood households use approximately 155 litres of hot water daily, equating to a massive 0.4 million litres of hot water used across the suburb every single day.
Other census insights reinforce Underwood's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Underwood community is home to 733 couple families with children and 131 one-parent families, meaning a large proportion of households face substantial hot water demand. With 1,017 homes owned with a mortgage and 499 owned outright, many residents also have the homeownership and growing equity that make switching to efficient hot water systems a practical way to lower expenses.
Underwood is converting hot water demand to efficient systems faster than many peers, with 12.5% of dwellings already upgraded.
Hot water systems in Underwood
In Underwood, more homeowners are rethinking their hot water system and moving to energy‑efficient options like a heat pump hot water system, solar hot water system and modern electric hot water system. With an average household size of about 3.1 people and more than 1,500 owner‑occupied homes, hot water demand is high and power bills add up quickly. Many local families are paying off mortgages of around $1,950 a month, so trimming ongoing costs with a more efficient hot water upgrade simply makes sense.
Underwood’s climate is ideal for efficient hot water. The area enjoys around 18.5 MJ/m² of mean daily solar exposure over the year, which works out to roughly 5.1 kWh/m² of sunshine per day. That strong QLD sun helps both a solar hot water heating system and a quality heat pump hot water system perform really well, especially when paired with rooftop solar. Swapping out older gas or resistive electric units can deliver substantial annual hot water energy savings for households across 4119.
Across the postcode’s 2,145 occupied dwellings, most are three‑ and four‑bedroom separate houses, so there is steady demand for showers, laundry and dishwashing. That makes choosing the best hot water system Australia offers – for your family size and roof space – an important decision. Brands like Rheem heat pump hot water, Sanden heat pump and Rinnai solar hot water are popular for efficient upgrades, while Chromagen solar hot water is often chosen for robust solar hot water installation on sunny roofs.
When you compare options such as heat pump vs solar hot water or solar hot water vs electric hot water, it helps to look at running costs as well as upfront hot water system price. A modern, well‑sized heat pump hot water installation can cut electricity use by up to two‑thirds compared with an old electric hot water system, while a good solar hot water installation can use the sun for most of the year and only top up with power on cloudy days.
To give you a feel for savings, here are typical average annual bill reductions Underwood households might see:
• Old electric to heat pump hot water system: $350–$650 per year • Gas to heat pump hot water system: $250–$500 per year • Gas to solar hot water system: $250–$550 per year • Old electric to modern electric hot water installation with rooftop solar: $200–$450 per year
Since 2001, around 284 efficient hot water systems have been installed in Underwood, including both heat pumps and solar hot water. Installations peaked around 2010, when 44 systems went in, with solid numbers through 2009–2014 and a second wave of interest from 2018 onwards. Recent years still show steady heat pump hot water installation and solar hot water tank replacement, reflecting a growing local focus on electrification, lower running costs and more energy efficient hot water system options.
Hot Water Rebates, Tariffs & Savings
Across Underwood QLD, more households are replacing ageing gas or electric units with efficient options like heat pump hot water, solar hot water and high‑efficiency electric systems. Australian Federal Government incentives, such as Small‑scale Technology Certificates (STCs), can reduce the effective heat pump hot water price or solar hot water price by hundreds of dollars. On top of that, Queensland hot water rebate programs at times support heat pump and solar upgrades, and there may be an electric hot water system rebate when shifting away from gas. Together, these incentives can cut the upfront hot water system cost by a substantial percentage and shorten payback periods to just a few years, especially if you already have solar. Using timers or solar‑diversion controllers to run a heat pump during the middle of the day can boost savings even further, making it one of the most efficient hot water system choices for local homes.
Whether you are comparing electric hot water vs gas hot water, looking at rheem solar hot water or rinnai solar hot water, or chasing the best heat pump hot water system for your family, it pays to get tailored advice. Underwood’s strong solar resource and growing interest in sustainability mean efficient hot water is a smart way to cut emissions and future‑proof your home.
If your existing unit is old, unreliable or due for hot water repair, now is a good time to check if your place in Underwood is ready for a hot water upgrade. Talk with experienced local installers like us who specialise in heat pump hot water, solar hot water repair, solar hot water tank replacement and efficient electric hot water installation. We can walk you through hot water rebate QLD options, compare systems and prices, and design an energy efficient hot water system that reduces bills, cuts carbon and keeps your showers reliably hot for years to come.