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TL;DR - Heating System Comparison Quick Summary 3 min read
Reverse cycle air conditioning is the best heating choice for 80% of Australian homes - it's 40-60% cheaper to run than gas ($0.20-$0.35/hr vs $0.30-$0.50/hr), heats AND cools with the same unit, and costs $1,600-$2,400 per room or $10,000-$18,000 ducted. Gas heating suits extreme cold climates (Melbourne, Canberra, Tasmania). Avoid electric resistance heating (most expensive at $0.60-$1.00/hr).
Reverse Cycle (Best Overall)
$0.20-$0.35/hr, 300-400% efficient, heats AND cools
Gas Heating (Cold Climates)
$0.30-$0.50/hr, works below 0°C, instant powerful heat
Electric Resistance (Avoid)
$0.60-$1.00/hr most expensive, only as last resort
Installation Costs
Split $1,600-$2,400, Ducted RC $10k-$18k, Gas $8k-$15k
💡 Best For Each Situation:
Mild climates (Sydney, Brisbane, Perth): Reverse cycle split or ducted - lowest running costs, heats AND cools. Cold climates (Melbourne, Canberra, Hobart): Reverse cycle ducted ($10k-$18k) or gas ducted ($8k-$15k) both work well. Budget option: Reverse cycle split systems for individual rooms ($1,600-$2,400 each) - most flexible.
Quick Comparison Table: Reverse Cycle, Gas, Electric Heating Costs & Efficiency 2026 Australia
| System Type | Install Cost | Running Cost/Hr | Efficiency | Best For |
|---|---|---|---|---|
| Reverse Cycle Split | $1,600-$2,400 | $0.20-$0.35 | 300-400% | Most Australian climates |
| Reverse Cycle Ducted | $10,000-$18,000 | $1.00-$1.50 | 300-400% | Whole house heating/cooling |
| Gas Ducted Heating | $8,000-$15,000 | $1.50-$2.20 | 80-95% | Cold climates (Melb, Canberra) |
| Gas Wall Heater | $2,000-$4,500 | $0.30-$0.50 | 80-90% | Single rooms, existing gas |
| Electric Panel Heater | $200-$600 | $0.60-$1.00 | 100% | Rental, occasional use |
| Electric Oil Heater | $150-$400 | $0.70-$1.20 | 100% | Portable, rarely used |
| Wood Fire Heater | $3,000-$8,000 | $0.15-$0.25 | 60-75% | Rural, ambiance, wood access |
* Running costs based on electricity $0.30-$0.35/kWh, natural gas $0.03-$0.04/MJ. Efficiency = heat output vs energy input.
Reverse Cycle Air Conditioning (Heat Pump): $1,600-$15,000, $200-$600/Year Running Costs 2026 Australia
🏆 Most Cost-Effective for Most Australians
How It Works:
Heat pump technology extracts heat from outside air and moves it inside. For every 1kW of electricity used, produces 3-4kW of heat (300-400% efficient). Same unit that cools in summer reverses to heat in winter.
✓ Advantages:
- Most efficient: 3-4x more efficient than electric resistance, 2-3x more than gas
- Dual purpose: Same unit heats in winter, cools in summer
- Lower running costs: 40-60% cheaper than gas, 60-75% cheaper than electric resistance
- Clean & safe: No combustion, no gas leaks, no flues needed
- Quick heating: Reaches temperature in 5-10 minutes
- Long lifespan: 12-18 years with proper maintenance
- Government rebates: VEU/ESS schemes can save $200-$600 in VIC/NSW
✗ Disadvantages:
- Performance drops in extreme cold: Efficiency decreases below 5°C, struggles below -5°C
- Outdoor unit noise: 40-50dB (can disturb neighbors if close to boundary)
- Defrost cycles: Unit pauses heating every 30-60 mins in freezing temps (5-10 min break)
- Dry air: Doesn't add moisture like gas heating (can be uncomfortable)
- Upfront cost: More expensive than portable electric heaters
- Not ideal alpine areas: Below 0°C regularly, consider gas backup
💰 Costs & Running Expenses:
Split System:
- Purchase + install: $1,600-$2,400 per room
- Running cost: $0.20-$0.35/hour per 5kW unit
- Winter season: $150-$250 (living room, 3 months, 6 hrs/day)
Ducted System:
- Purchase + install: $10,000-$18,000 (whole house)
- Running cost: $1.00-$1.50/hour (14kW system)
- Winter season: $540-$810 (whole house, 3 months, 6 hrs/day)
🌡️ Best Climate Zones:
- Excellent: Sydney, Brisbane, Perth, Adelaide, Gold Coast, Newcastle (mild winters, rarely below 5°C)
- Very Good: Melbourne (works well, may need backup for coldest days below 0°C)
- Good with backup: Canberra (effective above 0°C, gas backup recommended for -5°C nights)
- Not recommended: Alpine areas with regular sub-zero temperatures (Thredbo, Falls Creek - use gas heating)
Gas Heating Systems: $2,000-$12,000 Ducted, $600-$2,500 Space Heaters, $500-$900/Year 2026 Australia
🔥 Best for Cold Climates & Instant Heat
How It Works:
Burns natural gas to produce heat. Ducted systems distribute via ceiling vents, wall heaters radiate from single location. Most efficient gas heaters achieve 80-95% efficiency (5-20% lost via flue).
Gas Ducted Heating
✓ Advantages:
- • Powerful instant heat (room warm in 3-5 minutes)
- • Works perfectly in extreme cold (no performance drop)
- • Even heat distribution throughout house
- • Adds moisture to air (more comfortable than reverse cycle)
- • Long lifespan (20-25 years)
- • Lower running cost than electric resistance
✗ Disadvantages:
- • Heating only (need separate cooling system)
- • Requires natural gas connection ($1,500-$3,000 if not connected)
- • Annual servicing essential ($150-$250)
- • Combustion products (requires flue, some heat loss)
- • More expensive to run than reverse cycle (50-100% higher)
- • Gas prices increasing faster than electricity
💰 Costs:
- System + install: $8,000-$15,000 (150m² house)
- Running cost: $1.50-$2.20/hour (whole house)
- Winter season (Melbourne): $810-$1,188 (4 months, 6 hrs/day)
Gas Wall Heaters (Space Heaters)
✓ Advantages:
- • Lower upfront cost than ducted ($2,000-$4,500)
- • Instant heat for single room
- • No outdoor unit needed
- • Flued or unflued options
- • Can heat large open spaces effectively
✗ Disadvantages:
- • Heats only one room/area
- • Unflued models produce moisture/combustion products
- • Need multiple units for whole house ($6,000-$13,500)
- • Wall-mounted (not portable, permanent installation)
- • Requires gas connection in each room
💰 Costs:
- Unit + install: $2,000-$4,500 per heater
- Running cost: $0.30-$0.50/hour per heater
- Winter season: $162-$270 per room (3 months, 6 hrs/day)
🌡️ Best Climate Zones for Gas Heating:
- Excellent: Melbourne, Canberra, Hobart, Ballarat (regular sub-5°C temps, long cold winters)
- Good: Adelaide, inland NSW/VIC (cold nights, existing gas connection)
- Not recommended: Brisbane, Darwin, Gold Coast (mild winters, reverse cycle more economical)
- Consider reverse cycle instead if: Don't have gas connected, Want heating + cooling, Prioritize running costs
Electric Resistance Heating: $100-$3,500, $800-$1,500/Year Running Costs 2026 Australia
⚠️ Least Cost-Effective (Avoid if Possible)
How It Works:
Converts electricity directly to heat. 100% efficient (1kW electricity = 1kW heat), but electricity is expensive compared to heat pump efficiency. Includes panel heaters, oil column heaters, bar heaters, fan heaters.
✓ Only Advantages:
- Very cheap to buy: $150-$600 (portable, no install)
- Portable: Move between rooms as needed
- No installation: Plug-in and use immediately
- Works anywhere: Any climate, any property type
- Rental-friendly: Take with you when moving
- Silent operation: Panel heaters make no noise
✗ Major Disadvantages:
- Most expensive to run: 2-3x cost of gas, 3-5x cost of reverse cycle
- Inefficient: 100% vs 300-400% for heat pump
- Slow heating: Takes 20-40 minutes to warm room
- Uneven heat: Hot near heater, cold elsewhere
- High electricity use: Can trip breakers, increase bills dramatically
- Fire risk: Higher risk than split systems (don't leave unattended)
💰 Running Cost Comparison:
Scenario: Heat living room 3 months, 6 hours/day (162 hours total)
- 2kW Electric panel heater: 162 hrs × 2kW × $0.32/kWh = $324-$540
- 5kW Reverse cycle split: 162 hrs × 1.2kW × $0.32/kWh = $150-$250
- Gas wall heater: 162 hrs × $0.40/hr = $162-$270
Electric resistance costs 2-3x more than alternatives. Only use if no other options available or for occasional/emergency heating.
When Electric Resistance Makes Sense:
- ✓ Rental short-term: Can't install fixed systems, leaving within 1-2 years
- ✓ Emergency backup: Secondary heater for power outages or system failure
- ✓ Rarely used rooms: Guest bedroom, garage workshop (heating 5-10 hours/year total)
- ✓ Temporary solution: While saving for reverse cycle installation
- ✗ Avoid for: Primary heating, daily use, long-term solution, high-use rooms
Heating Costs by 2026 Australian Climate Zone: Melbourne, Sydney, Canberra, Adelaide, Perth
🌡️ Sydney, Perth, Adelaide (Mild Winter)
Heating needed: 2-3 months (June-August), 4-6 hours/day average
Reverse Cycle
$180-$350
Medium house, per winter
Best choice: Efficient + cooling
Gas Heating
$300-$550
Medium house, per winter
Overkill: Too expensive
Electric Resist.
$650-$1,100
Medium house, per winter
Avoid: Very expensive
Recommendation: Reverse cycle air conditioning. Saves $120-$200/year vs gas, $470-$750/year vs electric. Dual heating/cooling for year-round use.
🌡️ Melbourne (Cold Winter)
Heating needed: 4-5 months (May-September), 6-8 hours/day average
Reverse Cycle
$480-$950
Medium house, per winter
Good: Efficient, dual-purpose
Gas Heating
$750-$1,300
Medium house, per winter
Best for extreme cold days
Electric Resist.
$1,500-$2,600
Medium house, per winter
Avoid: Prohibitively expensive
Recommendation: Reverse cycle PLUS gas backup for coldest days. Or reverse cycle ducted if you also need cooling (only $270-$350 more/year vs gas, but adds $10k+ cooling value). Gas ducted if heating only and staying long-term.
🌡️ Canberra, Hobart (Very Cold Winter)
Heating needed: 5-6 months (May-October), 8-10 hours/day average
Reverse Cycle
$900-$1,600
Medium house, per winter
Good but needs backup
Gas Heating
$1,300-$2,200
Medium house, per winter
Best: Reliable in extreme cold
Electric Resist.
$2,800-$4,800
Medium house, per winter
Never: Unsustainably expensive
Recommendation: Gas ducted heating as primary system. Add reverse cycle split in master bedroom for efficient night heating above 5°C. Alternatively, modern cold-climate reverse cycle (rated to -15°C) can work as sole system if properly sized.
🌡️ Brisbane, Gold Coast (Mild/Minimal Winter)
Heating needed: 1-2 months (July-August), 2-4 hours/day average
Reverse Cycle
$60-$150
Medium house, per winter
Perfect: Minimal heating needed
Gas Heating
$120-$250
Medium house, per winter
Not worth it: Rarely needed
Electric Resist.
$200-$450
Medium house, per winter
OK for portable occasional use
Recommendation: Reverse cycle air conditioning (you need cooling anyway). Minimal heating costs make electric portable heater acceptable if you already have AC for cooling. Don't install gas heating - not worth connection cost for 1-2 months use.
Decision Framework: What Should You Choose? Climate, Budget, Running Costs 2026 Australia
✓ Choose Reverse Cycle Air Conditioning If:
- ☑ Live in Sydney, Brisbane, Perth, Adelaide, coastal areas
- ☑ Want lowest running costs (40-60% cheaper than gas)
- ☑ Need both heating AND cooling (dual purpose)
- ☑ Don't have gas connection (costs $1,500-$3,000 to connect)
- ☑ Prioritize energy efficiency and environmental impact
- ☑ Rent or may move in 5 years (lower upfront investment)
- ☑ Temperatures rarely go below 0°C
- ☑ Want quick installation (1 day vs 2-4 for ducted gas)
- ☑ Prefer clean, safe heating (no combustion products)
- ☑ Eligible for VEU/ESS rebates (VIC/NSW)
✓ Choose Gas Heating If:
- ☑ Live in Melbourne, Canberra, Hobart, Ballarat
- ☑ Experience regular sub-zero temperatures
- ☑ Already have natural gas connected
- ☑ Want instant, powerful heat regardless of temperature
- ☑ Need heating only (have separate cooling system)
- ☑ Staying long-term (10+ years to recoup higher running costs)
- ☑ Prefer consistent heat output (no defrost cycles)
- ☑ Like moisture/humidity from combustion heating
- ☑ High heating demand (8+ hours/day, 4+ months/year)
- ☑ Heating is priority over cooling in your climate
💡 Hybrid Solution (Best for Melbourne/Canberra):
Combine reverse cycle + gas for optimal performance and economy:
Option 1: Reverse Cycle Primary + Gas Backup
- System: Reverse cycle ducted ($10,000-$18,000) + portable gas heater ($600-$1,200)
- Use: Reverse cycle for 90% of winter (above 5°C). Gas heater for coldest 10-15 days.
- Savings: Get cooling included, reduce running costs 40% vs gas-only
Option 2: Gas Ducted + Reverse Cycle Bedroom
- System: Gas ducted ($8,000-$15,000) + reverse cycle split in master ($1,800-$2,500)
- Use: Gas for family areas and extreme cold. Reverse cycle for bedroom nights (more efficient).
- Savings: Save $150-$250/year vs gas-only by using reverse cycle for bedroom
Top Heating System Brands Australia : Daikin, Mitsubishi, Rinnai, Braemar, Brivis
🏆 Best Reverse Cycle Heating Brands
Daikin
BEST OVERALLWhy Choose:
- • Industry leader worldwide - 30% market share
- • 7+ star energy ratings (most efficient)
- • Whisper quiet 19dB operation
- • Advanced inverter technology
- • Works efficiently down to -15°C
Price Range:
- Split system: $1,800-$2,800 installed
- Ducted: $12,000-$20,000 installed
- Warranty: 5 years parts, 5 years labour
Best for: Those wanting premium quality, maximum efficiency, and long-term reliability
Mitsubishi Electric
MOST RELIABLEWhy Choose:
- • Exceptional build quality - 15-18 year lifespan
- • Proven reliability (fewest service calls)
- • Hyper-heating technology for cold climates
- • Superior filtration systems
- • Premium Japanese engineering
Price Range:
- Split system: $1,900-$3,000 installed
- Ducted: $13,000-$22,000 installed
- Warranty: 5 years parts, 7 years compressor
Best for: Cold climates (Melbourne, Canberra), those prioritizing longevity over upfront cost
Panasonic
BEST VALUEWhy Choose:
- • Excellent value for money (20% cheaper)
- • nanoe™ X air purification technology
- • Smart Wi-Fi control included
- • 6-7 star energy ratings
- • Strong warranty coverage
Price Range:
- Split system: $1,500-$2,300 installed
- Ducted: $10,000-$17,000 installed
- Warranty: 5 years parts, 6 years compressor
Best for: Budget-conscious buyers wanting quality Japanese brand without premium price
🔥 Best Gas Heating Brands
Brivis
MARKET LEADERWhy Choose:
- • Australian-made since 1972
- • 5-star energy rating (up to 85% efficiency)
- • Buffalo range for extreme cold (Canberra/Tasmania)
- • Quiet operation (52-56dB)
- • 20-25 year lifespan with servicing
Price Range:
- Ducted gas: $8,500-$14,000 installed
- Capacity: 15kW-30kW (150-250m²)
- Warranty: 7 years heat exchanger, 2 years parts
Best for: Melbourne and cold climate homes, whole-house heating, long-term reliability
Rinnai
BEST EFFICIENCYWhy Choose:
- • Up to 6-star energy rating (90%+ efficiency)
- • Advanced modulating burner technology
- • Lowest gas consumption in class
- • Wall furnace specialists
- • Japanese engineering quality
Price Range:
- Ducted gas: $9,000-$15,500 installed
- Wall furnace: $2,200-$4,000 installed
- Warranty: 5 years heat exchanger, 2 years parts
Best for: Minimizing running costs, premium efficiency, wall furnace applications
Braemar
BEST VALUEWhy Choose:
- • Australian-made, budget-friendly
- • 4-5 star energy ratings (75-85% efficient)
- • Proven reliability (30+ years manufacturing)
- • Wide installer network (lower labour costs)
- • Good parts availability
Price Range:
- Ducted gas: $7,500-$12,000 installed
- Capacity: 12kW-25kW (120-220m²)
- Warranty: 5 years heat exchanger, 1 year parts
Best for: Budget installations, rental properties, standard homes not requiring premium features
Government Heating Rebates & Incentives 2026 Australia : VIC $200-$1,000, NSW $150-$500, ACT $2,500
Save $200-$600 on Energy-Efficient Heating Systems
Australian governments offer substantial rebates for upgrading to energy-efficient reverse cycle heating systems. Programs vary by state but can significantly reduce your upfront costs.
Victoria - VEU (Victorian Energy Upgrades)
$200-$600Eligible Systems:
- ✓ Reverse cycle split systems (6+ stars)
- ✓ Reverse cycle ducted systems (5+ stars)
- ✓ Replacement of electric resistance heating
Rebate Amounts:
- Small split (2-4kW): $200-$350
- Medium split (4-7kW): $350-$500
- Large split (7-10kW): $500-$600
- Ducted systems: $400-$600
How to Claim:
- 1. Use VEU-accredited installer (discount applied at point of sale)
- 2. Installer handles all paperwork and VEU certificate creation
- 3. Rebate deducted from invoice - no post-purchase claiming needed
- 4. Only available for replacing old inefficient systems
Eligibility: Victorian households and businesses replacing old heating. System must meet minimum energy ratings. Check installer is VEU-accredited.
NSW - ESS (Energy Savings Scheme)
$200-$500Eligible Systems:
- ✓ High-efficiency reverse cycle AC (AEER ≥ 3.5)
- ✓ Replacing electric resistance heating
- ✓ Split and ducted systems eligible
Rebate Amounts:
- Small capacity: $200-$300
- Medium capacity: $300-$400
- Large/ducted: $400-$500
- + PDRS (smart controls): Extra $100-$300
Bonus - PDRS (Peak Demand Reduction):
Add smart controls to reduce grid demand during peak periods for additional rebates:
- • Wi-Fi smart thermostat: +$100-$200
- • Smart AC controller: +$150-$300
- • Combined ESS + PDRS: Up to $800 total
How to Claim: Use ESS-accredited installer. Discount applied at sale. PDRS requires smart control installation and app setup.
SA - REPS (Retailer Energy Productivity Scheme)
$150-$350Eligible Systems:
- ✓ Energy-efficient reverse cycle (6+ stars)
- ✓ Replacing old/inefficient heating
- ✓ Residential properties in SA
Rebate Amounts:
- Standard split: $150-$250
- High-efficiency split: $250-$350
- Ducted systems: $300-$350
How to Claim:
- • Use REPS-approved installer
- • Rebate applied as point-of-sale discount
- • Must replace existing heating system
- • Minimum efficiency standards apply
Note: SA rebates are smaller than VIC/NSW but still worthwhile. Check with installer for current REPS pricing.
💰 Tax Deductions for Rental Properties
Depreciation Deductions:
- Reverse cycle split: 10-year depreciation (10% per year)
- Ducted systems: 15-year depreciation (6.67% per year)
- Gas heating: 15-year depreciation (6.67% per year)
Example: $2,000 split system = $200/year tax deduction for 10 years
Immediate Deductions:
- ✓ Repairs and servicing (100% deductible same year)
- ✓ Energy bills for common areas
- ✓ Installation costs (depreciated over asset life)
Consult tax professional for advice specific to your situation.
Heating Installation Process & Timeline: 4-8 Hours Split, 2-3 Days Ducted Australia
Reverse Cycle Split System Installation
Pre-Installation Assessment (Day 0)
- • Installer inspects site and electrical capacity
- • Confirms optimal indoor/outdoor unit locations
- • Measures pipe run distance (affects cost)
- • Provides written quote (valid 30 days)
Duration: 30-45 minutes (free with most installers)
Installation Day
- • Mount indoor unit on wall (bedroom/living room)
- • Install outdoor unit (ground or wall bracket)
- • Run refrigerant lines and electrical cables
- • Drill core hole through wall (65-80mm)
- • Pressure test and vacuum refrigerant lines
- • Commission system and test all functions
Duration: 4-6 hours for single split system
Post-Installation (Same Day)
- • Demonstrate operation and settings
- • Provide user manual and warranty documents
- • Clean up and remove packaging
- • Electrical certificate of compliance
Ready to use: Immediately after installation
Total Timeline: 1 Day
Most split system installations complete in a single day. Multi-head systems (2-5 indoor units) may take 1-2 days.
Ducted Heating Installation (Gas or Reverse Cycle)
Pre-Installation (1-2 weeks before)
- • Detailed site assessment and heat load calculation
- • Ductwork design and zone planning
- • Obtain council permits (if structural changes needed)
- • Order equipment (1-2 week lead time)
- • Schedule electrical/gas upgrades if required
Planning phase: 1-2 weeks
Day 1-2: Ductwork Installation
- • Access roof space or underfloor area
- • Install main trunk line and branch ducts
- • Cut ceiling vents in each room (standard 225mm-375mm)
- • Install return air grilles
- • Seal all duct joints (critical for efficiency)
Duration: 1-2 days (2-3 installers)
Day 2-3: Unit Installation
- • Install main unit in roof/underfloor/external
- • Connect ductwork to main unit
- • Gas connection (licensed gasfitter) or electrical (reverse cycle)
- • Install wall controller/thermostat
- • Install zoning dampers (if multi-zone system)
Duration: 1 day
Day 3-4: Commissioning & Testing
- • Balance airflow to each room (critical for efficiency)
- • Pressure test gas connections (gas systems)
- • Test all zones and thermostats
- • Run full heating cycle, check temperatures
- • Clean up, remove materials, ceiling repairs if needed
Duration: Half day
Total Timeline: 2-4 Days
Standard homes (150m²): 2-3 days
Large homes (200m²+) or complex layouts: 3-4 days
Delays possible if: Asbestos found in roof, electrical upgrades needed, bad weather
What to Expect During Installation
✓ Prepare Your Home:
- • Clear access to installation areas
- • Provide power outlet access for tools
- • Protect valuable furniture near work area
- • Keep pets secured during installation
- • Be home for start and finish (or arrange access)
⚠️ Expect Some Disruption:
- • Noise from drilling/cutting (split: 2-3 hours, ducted: all day)
- • Dust from ceiling/wall work (installers should minimize)
- • Power may be off for 30-60 minutes
- • Multiple tradespeople in home (ducted systems)
- • Roof access required (ducted systems)
Common Heating Problems & Troubleshooting: Poor Heat, High Bills, Pilot Light Issues Australia
Reverse Cycle Heating Issues
❌ Not Heating / Blowing Cold Air
Possible Causes:
- • Unit in cooling mode instead of heating
- • Outside temperature too cold (below -5°C for standard units)
- • Defrost cycle active (pauses heating for 5-10 mins)
- • Low refrigerant (gas leak)
- • Faulty reversing valve
Solutions:
- ✓ Check remote - press MODE until "HEAT" shows, set temp to 24°C
- ✓ Wait 10 minutes if defrosting (outdoor unit icy)
- ✓ If below 0°C, normal for efficiency to drop
- ✓ Call technician if still cold after 15 minutes running
Cost to fix: $150-$450 (refrigerant regas: $200-$350, valve: $300-$600)
⚠️ Poor Heating Performance
Possible Causes:
- • Dirty air filters (blocks airflow)
- • Blocked outdoor unit (leaves, debris)
- • Unit undersized for room (too small kW)
- • Poor insulation/drafts in room
- • Outdoor coil iced up
Solutions:
- ✓ Clean filters monthly (remove, vacuum/wash, dry, replace)
- ✓ Clear 500mm around outdoor unit
- ✓ Check for ice on outdoor coil - turn off, let thaw 2 hours
- ✓ Seal window/door gaps, use draft stoppers
- ✓ If unit too small, consider upgrading or adding second unit
DIY fixes free, professional service: $120-$180
💧 Water Leaking from Indoor Unit
Possible Causes:
- • Blocked condensate drain (most common)
- • Drain pipe frozen (cold weather)
- • Indoor unit tilted backward
- • Overflowing drain pan
Solutions:
- ✓ Turn off unit immediately to prevent water damage
- ✓ Check outdoor drain pipe - pour 1L water through to clear blockage
- ✓ If frozen, wait for thaw or use warm (not boiling) water
- ✓ Call technician if drain pan cracked or unit tilted
Cost to fix: $120-$250 (drain clean/reposition unit)
Gas Heating Issues
❌ Pilot Light Won't Stay Lit
Possible Causes:
- • Faulty thermocouple (safety sensor)
- • Dirty pilot orifice
- • Gas supply issue
- • Blocked flue
- • Windy conditions (external units)
Solutions:
- ✓ Check gas is on at meter
- ✓ Try relighting 3 times (hold button 60 seconds)
- ✓ Check other gas appliances work
- ⚠️ DO NOT attempt DIY repair - call licensed gasfitter
Cost to fix: $180-$400 (thermocouple replacement: $180-$280)
⚠️ Weak Heat or Uneven Heating
Possible Causes:
- • Dirty/clogged air filter (ducted)
- • Blocked vents or returns
- • Closed zone dampers
- • Leaking ductwork (20-30% heat loss common)
- • Burner needs cleaning
Solutions:
- ✓ Replace air filter (every 3 months, $15-$40)
- ✓ Check all vents open and unblocked (furniture, curtains)
- ✓ Ensure return air grille clear (needs 500mm+ clearance)
- ✓ Annual professional service to clean burner and check ducts
Annual service: $150-$250, duct sealing: $600-$1,500
🚨 Gas Smell / Carbon Monoxide Concerns
Warning Signs:
- • Gas smell (rotten egg odor)
- • Yellow/orange flames (should be blue)
- • Soot buildup around unit
- • Headaches, nausea, dizziness when unit running
- • Flue blocked or damaged
IMMEDIATE ACTIONS:
- 1. Turn off gas at heater and meter immediately
- 2. Open windows and doors (ventilate)
- 3. Evacuate if strong smell
- 4. Call gas emergency: 13 23 27 (24/7)
- 5. DO NOT use electrical switches or ignition sources
Carbon monoxide is deadly - never ignore warning signs
When to Call a Professional
❄️ Reverse Cycle:
- • No heat after 15 mins running
- • Refrigerant leak (icy pipes, hissing)
- • Strange noises (grinding, squealing)
- • Error codes on display
- • Water leaking repeatedly
- • Unit trips circuit breaker
🔥 Gas Heating:
- • Pilot won't stay lit (after 3 attempts)
- • Any gas smell
- • Yellow/orange flames
- • Excessive soot buildup
- • Loud banging/popping
- • Annual service due
💰 Typical Costs:
- • Service call: $120-$180
- • Diagnostic fee: $80-$150
- • Standard repair: $200-$500
- • Refrigerant regas: $200-$350
- • Part replacement: $150-$800
- • Annual service: $150-$250
Heating System Maintenance Requirements: $150-$500/Year, Annual Servicing 2026 Australia
Proper Maintenance Extends Lifespan & Reduces Running Costs
Regular maintenance keeps your heating system running efficiently, prevents expensive breakdowns, and can extend its lifespan by 5-10 years. Annual servicing costs $150-$250 but saves $300-$600 per year in energy costs and prevents major repairs.
Reverse Cycle Air Conditioning Maintenance
DIY Tasks (5 minutes)
- ✓ Clean filters: Remove, vacuum or wash with warm water, dry completely, reinstall. Dirty filters reduce efficiency 20-30%.
- ✓ Check outdoor unit: Remove leaves, debris, spider webs from coils and fan. Maintain 500mm clearance.
- ✓ Test operation: Switch between heating/cooling modes to ensure system responds correctly.
Cost: Free (5-10 min/month)
Before Winter (April-May)
- ✓ Deep clean filters: Soak in warm soapy water for 15 mins, rinse thoroughly.
- ✓ Check drainage: Pour 1L water through indoor drain line to check flow.
- ✓ Inspect seals: Check window/door seals to prevent heat loss.
- ✓ Test heating mode: Run for 30 mins on hottest setting before cold weather arrives.
Cost: Free (30-45 min twice/year)
Professional Service
- ✓ Refrigerant check: Pressure test for leaks, top up if low (most common issue).
- ✓ Coil cleaning: Chemical clean indoor/outdoor coils (restores 10-15% efficiency).
- ✓ Electrical inspection: Check connections, compressor, fan motor.
- ✓ Drain line flush: High-pressure clean to prevent blockages.
Cost: $150-$220 per system
Saves $200-$400/year in energy costs
When to Schedule: Best to service in April (before winter) or October (before summer). Avoid peak seasons (June-August, December-February) when technicians are busiest and charge premium rates.
Gas Heating Maintenance
DIY Tasks (10 minutes)
- ✓ Replace air filter: Check filter monthly, replace every 3 months ($15-$40). Reduces efficiency 30% when dirty.
- ✓ Check vents: Ensure all vents open and unblocked by furniture/curtains.
- ✓ Inspect pilot light: Should be steady blue flame. Yellow/orange indicates problem - call gasfitter.
- ✓ Listen for unusual noise: Banging, squealing, grinding needs professional attention.
Cost: $15-$40 every 3 months (filters)
Before Winter (April)
- ✓ Test system: Run for 30 minutes before cold weather. Check all zones heat evenly.
- ✓ Check flue: Inspect external flue for blockages (bird nests, debris).
- ✓ Clear returns: Vacuum return air grille (needs 500mm+ clearance to operate efficiently).
- ✓ Schedule annual service: Book technician before peak season (May-June).
Cost: Free (30 min prep)
Professional Service (Mandatory)
- ✓ Burner inspection/clean: Remove carbon buildup (restores efficiency 10-20%).
- ✓ Gas pressure test: Check for leaks, verify correct pressure.
- ✓ Heat exchanger inspection: Cracks cause dangerous carbon monoxide leaks.
- ✓ Flue check: Verify proper draft and no blockages.
- ✓ Safety testing: Carbon monoxide levels, pilot safety valve.
Cost: $180-$250 (MANDATORY for safety)
Skipping service voids warranty and risks carbon monoxide poisoning
⚠️ WARNING: Annual gas heating service is not optional
Gas heaters produce carbon monoxide. Faulty heat exchangers or burners can leak CO into your home - a deadly, odorless gas. Annual servicing by licensed gasfitter is mandatory for safety and required to maintain warranty. Many insurance policies require proof of annual servicing.
Lifetime Maintenance Costs (15 Years)
Reverse Cycle Split
- Annual service: $150-$220/year
- 15 years: $2,250-$3,300
- Lifespan: 12-15 years
- Total ownership: Low maintenance
Gas Ducted Heating
- Annual service: $180-$250/year
- Filter replacements: $60-$160/year
- 15 years: $3,600-$6,150
- Lifespan: 20-25 years
Electric Resistance
- Annual service: None required
- 15 years: $0
- Lifespan: 10-20 years
- BUT: Running costs 3-5x higher
Value Analysis: Gas heating has highest maintenance costs but longest lifespan. Reverse cycle has moderate maintenance costs and best efficiency. Electric resistance has zero maintenance but prohibitively expensive running costs offset any savings.
Energy Ratings Explained: How to Read the Labels, Star Ratings, COP, SEER Australia
Understanding Energy Ratings Saves $200-$500 Per Year
Australian energy labels make it easy to compare heating efficiency. A 7-star reverse cycle uses 40% less energy than a 4-star model - saving $300-$500 annually. Learn to read the labels to choose the most cost-effective system.
Reverse Cycle Air Conditioner Star Ratings
What the Stars Mean:
Star ratings range from 1 to 10 stars. More stars = more efficient = lower running costs.
1-3 Stars: Poor
Avoid - inefficient, high running costs
4-5 Stars: Average
Basic efficiency, moderate costs
6-7 Stars: Good
High efficiency, low running costs. RECOMMENDED MINIMUM
8-10 Stars: Excellent
Premium efficiency, maximum savings
Key Numbers on the Label:
Capacity (kW)
Heating output. Bigger number = heats larger room. Match to your room size.
Example: 7kW heats 35-45m² room
COP (Coefficient of Performance)
Efficiency ratio. COP of 3.5 = uses 1kW electricity to produce 3.5kW heat (350% efficient).
Higher COP = lower running costs
Annual Energy Consumption (kWh/year)
Estimated electricity use per year. Lower number = cheaper to run.
Multiply by $0.32/kWh for annual cost estimate
Sound Power Level (dB)
Noise level. Lower is quieter.
19-25dB: Very quiet, 40-50dB: Noticeable, 55dB+: Loud
💰 Real Cost Comparison (7kW unit, 3 months winter, 6 hrs/day):
4-Star Unit (COP 2.8)
Uses 2.5kW electricity per hour
$432/winter
6-Star Unit (COP 3.5)
Uses 2.0kW electricity per hour
$346/winter
Saves $86/year
8-Star Unit (COP 4.5)
Uses 1.55kW electricity per hour
$268/winter
Saves $164/year
8-star model costs $300-$500 more upfront but pays back in 2-3 years, then saves $150-$200 every year after.
Gas Heater Star Ratings
Gas Star Rating Scale (1-6 stars):
1-2 Stars: 55-70% Efficient
Old technology, wastes 30-45% of gas as heat up flue
3-4 Stars: 70-85% Efficient
Standard modern gas heaters. MINIMUM ACCEPTABLE
5 Stars: 85-90% Efficient
High-efficiency models. RECOMMENDED
6 Stars: 90%+ Efficient
Top-tier, condensing technology (e.g. Rinnai Energysaver)
Important: Gas ratings measure combustion efficiency, NOT overall cost-effectiveness. Even 6-star gas (90%) is less cost-effective than 6-star reverse cycle (350% COP) because heat pumps move heat rather than create it.
What to Look For:
Input Rating (MJ/hr)
Gas consumption rate. Higher = more powerful but costs more to run.
Example: 80 MJ/hr = $1.60-$2.40/hour to run
Output Capacity (kW)
Actual heat delivered to room (after flue losses).
Divide input by efficiency to get output
Annual Gas Consumption (MJ/year)
Estimated gas use. Lower = cheaper to run.
Multiply by $0.03-$0.04/MJ for cost estimate
Type: Flued vs Unflued
Flued: Safer, removes combustion products (recommended).
Unflued: 95%+ efficient but adds moisture/CO2 to room.
💰 Gas Rating Cost Impact (Whole house, 4 months winter, 6 hrs/day):
3-Star (75% Efficient)
Wastes 25% of gas
$1,200/winter
5-Star (85% Efficient)
Wastes 15% of gas
$1,000/winter
Saves $200/year
6-Star (92% Efficient)
Wastes only 8% of gas
$870/winter
Saves $330/year
Energy Rating Quick Decision Guide
✓ Always Choose:
- • Reverse cycle: Minimum 6 stars (7-8 stars ideal)
- • Gas heating: Minimum 4 stars (5-6 stars ideal)
- • Higher upfront cost pays back in 2-4 years
- • Check COP/efficiency, not just star count
- • Look for inverter technology (smoother, more efficient)
✗ Avoid:
- • Reverse cycle below 5 stars (wastes electricity)
- • Gas heaters below 3 stars (wastes gas)
- • "Cheap" models with poor ratings (cost more long-term)
- • Oversized units (short-cycle, inefficient)
- • Units without energy label (non-compliant, inefficient)
