Skyline Energy - 21st Century Ecological Solutions
Skyline Energy - 21st Century Ecological Solutions hydronic radiatorHEAT PUMP WATER HEATERSSolar ElectricitySOLAR HOT WATER
Established 1999

Hydronic Heating - Heat Pump - Solar Electricity - Hot Water






Solar Electricity:




Hot Water:


- For your home:

- Commercial:


Hydronic Heating:


- For your home:

- Commercial:


Other Water Heating:


- For your home:

- Commercial:

Our Air Sourced Heat Pumps are 200% to 600% efficient, in OZ

Heat Pump Efficiency

Talk to us on
1300 552 976

or by emailing us:

Skyline Energy


Staff/Agents Login Here

Our Philosophy:
  • Listen carefully
  • Cooperate sincerely
  • Don't cut corners
  • Do it right or don't do it



Do you want to lower your energy bills?

1. >Solar Electricity< - It's a no-brainer

2. >Solar Energy Management< - Unlock the potential

3. >Solar Hot Water?< - Sanden Hot Water Heatpump

4. >Home Heating< - Hydronic heating - Simply the best

5. Rebates still available for Solar PV and Sanden heatpump

6. Run your Sanden during the day from your solar*!

* Except if you are on premium feed-in tarif, then you would run your Sanden when the sun goes down


solar electricity
solar energy management

Lithium Solar Battery System?

Tesla Powerwall

The soon to be released Australian Standards for the safe handling, installation and disposal of Lithium Solar batteries could bring an end to Lithium Solar Batteries in Australia

Having had personal experience of a Lithium battery "firework" (albeit a cheap toy one . . .) I won't be rushing out to get a big one for my solar system!

Lithium Battery explosion

Aquion Energy's new salt-water battery technology

Skyline Energy however can offer you a REAL ZERO EXPORT BATTERY-BACKED >UPS< SOLAR system that won't break the bank and your solar panels will still work even if the grid-power goes off!

You can also upgrade your existing solar system!

Salt-water technology is game-changing and makes energy storage safe and sustainable! Very high cycle life at 100% depth of discharge make this ideal for long duration solar applications. And no maintenance needed!

Couple with RED-BACK hybrid inverters - masterminded by Australian solar experts!

>System Prices<

Tesla Powerwall

Solar Hot Water - Harnessing free energy from the sun - even in the dark!

Save Energy, Save Money, with the best - >Sanden ECO Air Sourced Heat Pump<

Offset your air sourced heat pump hydronics running costs with >Solar Electricity<

Make that call today - 1300 552 976

The solar hot water systems we're all used to seeing on the roof, are not always the best environmental solution!
The >Sanden ECO< heat pumps are whisper quiet & extremely efficient, using a small amount of energy to collect the abundant heat that the sun puts into the air we breathe, and may be the overall best system for your specific situation. Industry leading performance means higher rebates are available for our heat pumps.

Why we don't recommend Evacuated-Tube systems:

The Solar/GAS age is over, and electric element boosters are inefficient, and . . . .

>Victoria State Government homeowner guide to sustainability (PDF)< page 4, table 1.1, supports our claim that heat-pumps can have a significantly lower lifecycle carbon footprint than solar-boosted electric systems:

  • avge heat pump produces 23 tonnes CO2 emissions
  • avge solar-boosted electric produces 33 tonnes CO2 emissions

In other areas results may vary, but in almost all conditions, Sanden 'ECO' heatpumps
will outperform most other heat-pumps and even solar boosted electric systems.

Save your roofspace for Solar Electricity, and install a heat-pump on the ground - higher return on investment.

Sanden Accreditation

Conventional Solar-Boosted Electric Hot Water systems actually rely on inefficient Electric-Element boosters - especially when you need it most IN WINTER!

A >Sanden ECO heat pump< will:
  • NOT put you at risk
  • ensure your water ALWAYS reaches and maintains safe temperature
  • kill or prevent harmful bacteria
  • save you money
You don't have to worry about leaving the booster off - there isn't one.

Read more about the >'Solar Myth'<

Our high efficiency, long life stainless steel heat-pumps are accredited for solar rebates, nothing on your roof, robust, more efficient, and simple to install.

Regardless if you currently have an off-peak electric hot water service, or a GAS hot water service, upgrade NOW - to one of our sensational heat-pumps (and solar electricty to drive your heatpump and your other appliances!)

>Sanden ECO heatpump< energy saving 78%* and therefore eligible for highest energy saving STC 'solar' rebate of any heatpump

No electric element, and whisper quiet at on 38dBa!
* calculated using Australian Office of the Renewable Energy Regulator (ORER) methodology

More info

Solar Hot Water - no roof panels

Eligible for all solar rebates*

Over *$2,400 in STC & Victoria State Electric Changeover Solar rebates still available -
*as at 1st Oct 2015
Save your roofspace for Solar Electricity, and install a >Sanden ECO heat-pump< water heater on the ground - higher return on investment than electric solar hot water systems.
(*depends on model, location, and existing conditions)


GAS/Solar Hot Water systems:


Skyline Energy Air Sourced Heat Pumps for Hydronic Heating

13kW Air Sourced Hydrocarbon Heat Pump

    Simply a very efficient way to heat your home

  • No inefficient back-up element required
  • Copeland Scroll compressors
  • Automatic defrost
  • Easy installation
  • You can depend on our 15yrs+ experience

Simplified rules for sizing your heatpump for MAXIMUM EFFICIENCY AND SERVICE LIFE!

  • Calculate how many kW are required
  • Look at the climatology of the location to establish the duration of 0oC to +4oC. Don’t just look at the extreme temps, look at the mean overnight temp and duration
  • If the ambient air temp rarely dips below +4oC or does so for short periods then you can use this simple calculation...
    3 x electricity input kW = heatpump output heat kW to size the heatpump.
  • If the mean overnight ambient air temp is between 0oC and +4oC change the calculation to
    2 x electricity input kW = heatpump output heat kW to size the heatpump.
    Now there is a trick here, it's not that the COP and efficiency is going to suddenly crash, but a more powerful heatpump will raise the water temp more rapidly so it will cycle off before it needs to defrost,
    thereby maintaining a higher COP and efficiency.

Skyline Energy:
  • produce supply and install Heatpumps specifically tuned for Hydronic Heating
  • design and supply complete hydronic heating kits for plumbers to install
  • can design, supply and arrange installation of hydronic heating in some areas
  • installed our first air sourced heatpump in 2002
  • installed our first hydronic heatpump system in 2005

Hydronic Heatpumps, Circ Pumps, Buffertanks etc. are available to all hydronics installers - email or call 1300 552 976 for trade pricing!

Home Heating with Radiant Floor Heat vs Forced Air

Why is radiant floor heat better than forced air heat (ducted/aircon)?
It is more comfortable, more energy efficient, provides a healthier environment and is more aesthetically pleasing.

Radiant Heating is Comfortable Heating!
Comfort is hard to define and is best understood as the absence of discomfort. Perhaps the most remarkable thing about radiant floor heat is what you won't notice. There are no forced air registers to see. No noise or dust from mechanical blowers. No hot air blowing on you. No hot air collecting at the ceiling, wasting energy. No cold floors to chill your feet. The mild warmth of a radiant floor is a subtle experience and always feels just right

Radiant Floor Heat Saves Energy
It takes less energy to heat a home with radiant floor heating than a forced air system

Radiant Heat is Healthy Heat
Forced air systems not only blow hot air, they also push allergens, dust and other airborne particles around your home. Improved indoor air quality can reduce allergies, medical bills, incidences of asthma and more. European studies indicate that dust mite populations are reduced as much as 90% in radiant heated homes. A quiet, peaceful environment, devoid of noisy fans and blowers, is a healthier and more relaxing environment too.

>Oversupply of crude oil is dragging down the current price of natural gas but this is temporary.<

Says Tony Regan - business development manager for LNG for Asia Pacific at energy analysts and consultancy Platts

>Gas, now off the agenda . . . <

for any project pursuing the most sustainable practice. Hot water, cooking, the lot – but replaced with what? The drivers for change? Technology and economics have moved on dramatically in the last couple of years. Solar power is now so cheap, and heat pumps and induction cooking so efficient, it actually makes more economic sense to get back to the old 60’s saying “Live better electrically”. There are various ways of setting this up, with or without generous feed-in tariffs. The best method is to align most of the building’s loads with the peak solar (PV) productive hours. For example, an efficient heat pump, with a coefficient of performance of 4 or better (CoP = units of heat produced for every unit of energy consumed), can heat a 315L tank in a few hours, in winter. This is stored for later use either as potable hot water, or for hydronic heating, or both. Hydronic heating has no equal in the pleasant radiant heat it imparts to occupants. The cost of a combination hot water and hydronic heat pump system has almost halved by using PV powered heat pumps instead of solar-gas systems. And they can achieve zero emissions, with zero running costs. Envirotecture

Is gas a good home energy option?

". . . connecting a new or existing home to the mains gas network today is now the most expensive long-term energy supply option"
". . . As gas becomes increasingly a discretionary fuel, will the gas networks go into a ‘death spiral’ causing asset writedowns and leaving more costs to be recovered from disadvantaged consumers?"
Alternative Technology Association

Can I go GAS now and upgrade to heatpump later, or upgrade existing GAS to heatpump?

simply Yes for slab heating.

Yes conditional for panel radiator heating. Size the panels for 50C water temp - this will mean bigger panels, but not much extra cost. For existing panel radiator systems, turn down your boiler to about 50C -55C if the panels provide enough heat then yes we can do an upgrade.


hydronic heating with air sourced heat pump

Air Sourced Hydronic Heatpump

Suitable for:

Skyline Energy SX-17CC air sourced hydronic heatpump
  • Slab Heating
  • Under Floor Heating
  • Radiator Panel Heating
  • Full replacement for, or booster for:
    poor performing Solar hydronics
    old wood/electric/oil hydronics
    uneconomical LPG/GAS hydronics

The age of GAS is over

Skyline Energy SX-17CC air sourced hydronic heatpumpSkyline Energy SX-17CC air sourced hydronic heatpumpSkyline Energy SX-17CC air sourced hydronic heatpump

Download datasheets for:

SX-07SX-11,   single compressor 240v, single fan - side
SX-13CCSX-17CC,   single compressor 240v, dual fan - side
SX-24, V25V35,  dual compressor 240v, dual fan - top, 1ph & 2ph,
V42-3, 3ph for BIG homes and commercial
SX-80-3 & SX-100-3 3ph for "mansions" and commercial projects
available from A$4,990 incl GST
(buffertank, circulating pumps etc. not included)

Trade Pricing & support also available

Skyline Energy - Experts in efficiently heating water:

Don't kid yourself!

We see all sorts of ideas and formulas typically on forums about heating homes with solar tubes and fancy tanks, but in the end we see disappointing systems that don't do what they are supposed to do - keep you warm in winter!

Be realistic right from the outset, it takes a lot of energy to keep a house warm, and if you are worried about the initial heating system costs and ongoing running costs BUILD/MOVE TO A SMALLER HOUSE . . . .

We research and offer the most cost-efficient water heaters for winter hydronic heating.

Natural GAS prices are set for drastic increase

If you don't have Natural GAS or don't want to use Natural GAS, the optimum system is a single, appropriately sized, dedicated Air-Sourced Heat-Pump! - Add solar electricity if you can. You can forget Geothermal systems unless you want bragging rights on how much money you wasted.

Skyline Energy Dedicated Air-Sourced Hydronic Heat Pumps:

Hydrocarbon vs conventional refrigerant:
Hydrocarbon heat-pumps are being heralded as "Heating reinvented" . . . Our considerable and comprehensive in-house research and development tests have shown that the performance difference offered by hydrocarbon gas over conventional refrigerants is minor, non-linear under variable conditions, but can be up to about 10%, but 10% IS 10% and therefore we offer hydrocarbon systems too!

  • Perfect for Hydronic Heating
  • High Efficiency 'Solar' Hot Water
  • Can be offset with Solar Electricity
  • Can be the back-up for wood-boiler instead of an element
  • Can replace a poor-performing solar-hybrid hydronics heater
  • Can replace an expensive to run LPG hydronics boiler

Hydronic Heating systems - Never be cold again

hydronic heating If you've ever experienced the luxury of a heated floorslab, or stepping from the shower into a warm towel, on a cold winters day, you'll know why Hydronic Heating systems are becoming very popular.

There are no drafts from forced air movement, you are just gently bathed in a warm environment. It's safe for all the family and great for people with allergies.

Water can be heated by GAS, LPG, Wood, Solar,   Ground-Sourced (Geothermal) Heat Pump, Water-Sourced, Air Sourced Heat Pump, or even a combination of one or more of these. For Australian conditions we generally recommend Air Sourced Heat Pumps as they provide the greatest overall control, sustainability and cost efficiency compared to straight GAS, LPG, Wood, and electric systems.

Skyline Energy pioneered the use of air sourced heat pumps for hydronic heating and continue to lead the field. Although our research shows that Evacuated Tube Solar provide very little additional heat for hydronics use, we will integrate them if you already have them!


Heat-pump still less than 50% of LPG running cost

Even though electricity costs have risen sharply in the last 12 months, a heat-pump running cost is still less than half the cost of using LPG (which along with Natural GAS prices, will also rise faster and higher over the next few years!) and about 1/3rd the cost of running straight electric heaters.

Electric heater = 1:1     Winter only Hydronic Heat-Pump typically = 1:3 (average)

Electric heater = 1:1     Potable water all-yr-round Heat-Pump typically = 1:4 (average)

Electric heater = 1:1     Summer only Pool Heat-Pump typically = 1:5 (average)

There are lots of factors that affect the COP of a heat-pump:

  • The ambient air temperature
  • The starting or returning water temperature
  • The gas/refrigerant used
  • The water flow rate
  • The input kW will also vary with the other variables

There is no such thing as "over-unity", energy in must equal energy out. The MAGIC is where the energy-in comes from and how efficiently it can be harnessed.

The Coefficient of Performance (COP) is simply a way of measuring the efficiency of something. It is the ratio of energy in vs energy out. A COP of 3 means 3x units of energy out for 1x unit in. In our case with air-to-water heat-pumps, the difference in the numbers is the energy harnessed from the air - at COP=3, 3kW of heat energy out comes from 1kW of electricity in, and 2kW of "solar" (heat) energy in, from the air.

All Skyline Energy Air Sourced Hydronic Heatpumps are fine-tuned individually for MAXIMUM C.O.P. efficiency!

Why don't we state the output in kW ?

The kW output of ALL air-sourced heatpumps is a variable. It would be misleading to state the kW output without listing all the other variables, input kW (itself a variable!), returning water temperature, ambient air temperature, water flow rate, refrigerant type and charge.

Heat Exchangers

If you want to use your heat-pump/boiler to heat your pool as well as your house, you will need an external heat exchanger
We offer a range of "shell and tube" heat-exchangers in two types, Titanium heat-exchangers and 316 Grade Stainless Steel heat-exchangers. (also suitable for a wide range of other commercial/industrial applications)

  heat exchangers

If you are completely off-grid, AND/OR you:

  • Have access to about 4000Lt of waste oil per year,
  • and, you don't mind getting your hands dirty

Then perhaps a waste oil burner for hydronics could be a good alternative solution for you.

Current technology waste oil burners are surprisingly environmentally friendly, but they do require maintenance involving cleaning etc. and handling of the waste oil, so they are not for everybody - ideal for a technically minded user like a car mechanic, tradesman etc.

They typically use about 3 to 4 litres of oil per hour.



Skyline Energy 5kW Air Sourced Hydrocarbon Heat Pump
SX-07 MAX 70sqm slab (50sqm RADs)

Skyline Energy 7kW Air Sourced Hydrocarbon Heat Pump
SX-11 MAX 110sqm slab (80sqm RADs)

Skyline Energy 8kW Air Sourced Hydrocarbon Heat Pump
SX-13CC MAX 130sqm slab 95sqm RADs)

Skyline Energy 12kW Air Sourced Hydrocarbon Heat Pump
SX-17CC MAX 170sqm slab (130sqm RADs)

Skyline Energy 15kW Air Sourced Hydrocarbon Heat Pump
SX-17DC Mult-Speed INVERTER -
MAX 170sqm slab (139sqm RADs)
This model does not require a buffertank.

Skyline Energy 18kW Air Sourced Hydrocarbon Heat Pump
SX-24 MAX 240sqm SLAB (200sqm RADs)

Skyline Energy 20kW Air Sourced Hydrocarbon Heat Pump
V35 MAX 350sqm SLAB (300sqm RADs)

Skyline Energy V50-3 Air Sourced Hydrocarbon Heat Pump
V50-3 MAX 500sqm SLAB (400sqm RADs)

Skyline Energy V60-3 Air Sourced Hydrocarbon Heat Pump
V60-3 MAX 600sqm SLAB (480sqm RADs)

Skyline Energy V80-3 Air Sourced Hydrocarbon Heat Pump
V80-3 MAX 800sqm SLAB (600sqm RADs)

Skyline Energy V100-3 Air Sourced Hydrocarbon Heat Pump
V100-3 MAX 1000sqm SLAB (760sqm RADs)

Skyline Energy V120-3 Air Sourced Hydrocarbon Heat Pump
V120-3 MAX 1200sqm SLAB (960sqm RADs)




Skyline Energy Cold Climate model air sourced heat pumps are the trusted name in hydronics throughout Australia, and despite what you may have heard can efficiently heat water hot enough for hydronic heating radiators and towel rails!

With predictions of sharply rising electricity AND GAS prices, Air Sourced Heat Pumps AND Solar Electricty offer the most cost-efficient long-term solution.


Heating solutions

Warning: Never buy a heat-pump that has an electric element - check first!

Hydronics and potable hot water (2-in-1 & 3-in-1) Heat Pump Systems

Hydronic Heating - Potable hot water heating - AND Refrigerated Air-Conditioning (Cooling) all from the same unit, sounds too good to be true . . . maybe it is!
Sizing a heat-pump to do hydronic heating AND potable hot water means increasing the size of the heat-pump to cater for both applications without compromising either one, and increasing the complexity of the system. We think its false economy, and recommend seperate potable hot water unit using either a Solar-Boosted LPG (FOR OFF-GRID ONLY), or high efficiency heat pump
Electric back-up elements totally destroy the efficiency of a heat pump. To make-up for an undersized heat pump, AND to maintain the potable hot water temperature, some combined units can use up to 3x 3kW electric elements for heating!

hydronic heating

Some want a wood-fired hydronic system:

hydronic wood boilerhydronic wood boiler

Heat Pump Wood Boiler back-up System

Instead of the traditional electric element backup, why not use a heat-pump that will provide the same (or more) energy but consume 60-70% less electricty!

How does this work

The wood boiler system heats water in a storage tank which supplies the hydronic panels or floorcoils with hot water. When the fire dies down and the water starts to cool, and if the hydronics needs more heat, the control system will fire-up the heat-pump to replace the heat from the fire. Once the water in the tank reaches its optimum temperature, (with or without a rekindled fire) the heat-pump is automaticay switched off.

Best of both worlds

Sizing the heat Pump depends on whether you want just boosting, (a small heat pump like the SX-07) or a heat pump that gives you the flexibility to use either wood or dedicated heat pump whenever you want.

Skyline Energy - 21st Century Heating Solutions