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Rheem 20L LPG Continuous Flow Hot Water Heater – External

by Rheem
Save $156.00
Original Price $1,716.00
Current Price $1,560.00

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✔ NZ Stocked

🛡 Official Warranty

📞 Need help? 0800 464 664

Description
🔥 Right-sized for normal homes

Rheem 20L LPG Continuous Flow Hot Water Heater – External

A practical continuous flow option for smaller households and single-bathroom homes. With up to 20 litres per minute, it’s ideal when you want on-demand hot water without paying for oversized capacity.

Output: 20L/min Fuel: LPG Install: External Q-Function diagnostic Flame Safe protection Frost protection

Best for

  • Single-bathroom homes
  • Smaller households
  • Cabins / holiday homes
  • Normal demand without heavy overlap
  • Replacing older small units

Great value when you don’t expect multiple showers at once.

♾️ Continuous flow

On-demand heating — no cylinder storage.

🛡️ Safety + diagnostics

Flame Safe + Q-Function inbuilt diagnostic support.

❄️ Frost protection

Outdoor-ready for NZ conditions.


Key Specs (Quick Reference)

Model Rheem 20L Continuous Flow (LPG)
Max flow rate 20 litres per minute (conditions vary)
Hot water type Continuous flow / instant
Fuel LPG (Natural Gas versions available on request)
Installation External wall-mounted
Frost protection Included
Temperature controllers Optional
Quick sizing tip:
Choose 20L for single-bathroom homes and normal use. If you expect regular overlap (two showers at once), step up to 26L/27L.

📄 Full Technical Specifications Detailed Rheem Continuous Flow technical documentation. Download Rheem Spec Sheet (PDF)

FAQ

Can this run on bottled LPG (45kg cylinders)?

Yes — commonly installed on standard 45kg LPG bottle setups. Installation must be completed by a licensed gasfitter.

Is Natural Gas available?

Yes — Natural Gas versions are available. Contact us if you require NG instead of LPG.

Does this unit require electricity?

Yes — a 230V supply is required for ignition and controls.

Installation requirements?

Must be installed in accordance with NZ regulations by a licensed professional.

Not sure which size is right? Tell us bathrooms, household size, and simultaneous use.

Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers.
Here's why we think you should shop with us at The Off Grid Store.

We can deliver to almost anywhere in New Zealand, unfortunately there are a few exceptions such as Chatham Islands and for larger items and Great Barrier Island. Best prices online guaranteed.

30 Day Easy Returns. Not happy with your product, we'll take it back no
questions asked.
Great Service. We pride ourselves on the best service, anywhere.
Your Satisfaction Guaranteed. We handpick our products for quality, we
know you'll love them. But if there is ever something wrong, we'll fix it.

Shipping

Rheem Shipping Rates

Rheem N & S Island N & S Island Rural
Rheem Gas 16L LPG Continuous Flow Water Heater $25.00 $30.00
Rheem Gas 20L LPG Continuous Flow Water Heater $25.00 $30.00
Rheem Gas 26L LPG Continuous Flow Water Heater $25.00 $30.00
Rheem Gas 27L LPG Continuous Flow Water Heater $25.00 $30.00
Rheem AmbiPower280e Hot Water Heat Pump From $100 Call for Quote
Rheem AmbiPower MDC-180 Heat Pump 2.4kW From $100 Call for Quote
Rheem HDC270 Ambiheat Heat Pump Side Vent From $100 Call for Quote
Remote Delivery Note:
Some remote locations may require custom freight arrangements or depot collection. If this applies to your order, we’ll contact you before dispatch to confirm the best available option.
Description
🔥 Right-sized for normal homes

Rheem 20L LPG Continuous Flow Hot Water Heater – External

A practical continuous flow option for smaller households and single-bathroom homes. With up to 20 litres per minute, it’s ideal when you want on-demand hot water without paying for oversized capacity.

Output: 20L/min Fuel: LPG Install: External Q-Function diagnostic Flame Safe protection Frost protection

Best for

  • Single-bathroom homes
  • Smaller households
  • Cabins / holiday homes
  • Normal demand without heavy overlap
  • Replacing older small units

Great value when you don’t expect multiple showers at once.

♾️ Continuous flow

On-demand heating — no cylinder storage.

🛡️ Safety + diagnostics

Flame Safe + Q-Function inbuilt diagnostic support.

❄️ Frost protection

Outdoor-ready for NZ conditions.


Key Specs (Quick Reference)

Model Rheem 20L Continuous Flow (LPG)
Max flow rate 20 litres per minute (conditions vary)
Hot water type Continuous flow / instant
Fuel LPG (Natural Gas versions available on request)
Installation External wall-mounted
Frost protection Included
Temperature controllers Optional
Quick sizing tip:
Choose 20L for single-bathroom homes and normal use. If you expect regular overlap (two showers at once), step up to 26L/27L.

📄 Full Technical Specifications Detailed Rheem Continuous Flow technical documentation. Download Rheem Spec Sheet (PDF)

FAQ

Can this run on bottled LPG (45kg cylinders)?

Yes — commonly installed on standard 45kg LPG bottle setups. Installation must be completed by a licensed gasfitter.

Is Natural Gas available?

Yes — Natural Gas versions are available. Contact us if you require NG instead of LPG.

Does this unit require electricity?

Yes — a 230V supply is required for ignition and controls.

Installation requirements?

Must be installed in accordance with NZ regulations by a licensed professional.

Not sure which size is right? Tell us bathrooms, household size, and simultaneous use.

Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers.
Here's why we think you should shop with us at The Off Grid Store.

We can deliver to almost anywhere in New Zealand, unfortunately there are a few exceptions such as Chatham Islands and for larger items and Great Barrier Island. Best prices online guaranteed.

30 Day Easy Returns. Not happy with your product, we'll take it back no
questions asked.
Great Service. We pride ourselves on the best service, anywhere.
Your Satisfaction Guaranteed. We handpick our products for quality, we
know you'll love them. But if there is ever something wrong, we'll fix it.

Shipping

Rheem Shipping Rates

Rheem N & S Island N & S Island Rural
Rheem Gas 16L LPG Continuous Flow Water Heater $25.00 $30.00
Rheem Gas 20L LPG Continuous Flow Water Heater $25.00 $30.00
Rheem Gas 26L LPG Continuous Flow Water Heater $25.00 $30.00
Rheem Gas 27L LPG Continuous Flow Water Heater $25.00 $30.00
Rheem AmbiPower280e Hot Water Heat Pump From $100 Call for Quote
Rheem AmbiPower MDC-180 Heat Pump 2.4kW From $100 Call for Quote
Rheem HDC270 Ambiheat Heat Pump Side Vent From $100 Call for Quote
Remote Delivery Note:
Some remote locations may require custom freight arrangements or depot collection. If this applies to your order, we’ll contact you before dispatch to confirm the best available option.