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Guardian 20kVA Home Standby Generator (Three Phase)

GUARDIAN 20KVA HOME STANDBY GENERATOR – THREE PHASE

Generac Guardian 20 kVA Spare Parts

Exploded diagrams, part numbers and prices inc GST.

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Original price was: $12,099.00.Current price is: $10,449.00. inc GST

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Tell us your application, power needs and location. We’ll recommend the right size and send a quote — usually within one business day.

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Phase (Single / Three / Unknown)

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Guardian 20kVA Home Standby Generator (Three Phase)

Get a generator quote

Tell us your application, power needs and location. We’ll recommend the right size and send a quote — usually within one business day.

Request service or maintenance

Book a service, report a fault, or ask about a maintenance plan for your generator or site equipment.

Order a maintenance kit

List your generator make, model and engine details and we’ll supply the correct filters, belts and service parts.

Express National Delivery

Price Beat Guarantee

Expert technical support

End-to-end service

Buyer Advice Guide

Ready for expert guidance?

How to size your generator

A simple sizing method

Typical appliance power draw (approximate)

Single-phase vs three-phase

Choosing a fuel & power type

Consider efficiency & running costs

Choose the right solution for your application

Assess portability, footprint & installation

Installation, safety & compliance

Service, support & warranty

Pre-purchase checklist

Frequently asked questions

Appliance	Running watts	Starting watts
Fridge / freezer	150–300	800–1,200
Microwave	1,000–1,500	1,000–1,500
Kettle / toaster	1,800–2,400	1,800–2,400
Split-system air con	1,000–2,000	2,000–3,500
Ducted air con	3,000–5,000+	6,000–10,000+
Water pump / bore pump	500–1,500	1,500–4,500
Power tools (saw, grinder)	1,200–1,800	2,000–3,000
LED lighting (per fitting)	5–15	5–15
TV / electronics	50–200	50–200

Type	Best for	Strengths	Consider
Diesel	High loads, long run-times, worksites, farms, off-grid & commercial standby	Fuel-efficient under load, durable, long lifespan	Heavier; needs servicing & fuel storage
Petrol	Home backup, trades, lighter portable use	Lower upfront cost, light & portable	Higher running cost; shorter run-times
Gas (LPG/NG)	Home standby, cleaner continuous power	Clean-burning, quiet, easy fuel supply for fixed installs	Lower energy density; install considerations
Inverter	Sensitive electronics, camping, caravans, events	Clean stable power, very quiet, fuel-saving eco mode, often parallel-capable	Higher $/kW; suited to smaller loads
Hybrid + BESS	Off-grid, events, fuel & emissions reduction	Runs quiet on battery; generator tops up only when needed — big fuel savings	Higher upfront cost; sizing best done with us

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Guardian 20kVA Home Standby Generator (Three Phase)

Get a generator quote

Tell us your application, power needs and location. We’ll recommend the right size and send a quote — usually within one business day.

Request service or maintenance

Book a service, report a fault, or ask about a maintenance plan for your generator or site equipment.

Order a maintenance kit

List your generator make, model and engine details and we’ll supply the correct filters, belts and service parts.

Express National Delivery

Price Beat Guarantee

Expert technical support

End-to-end service