6-20L Flue Type Gas Water Heater, front product view, gallery image 1

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6-20L LPG/NG Tankless Gas Water Heater, product detail view, gallery image 7

6-20L Flue Exhaust Tankless Gas Water Heater, product detail view, gallery image 6

6-20L LPG/NG Tankless Gas Water Heater, product detail view, gallery image 2

6-20L LPG/NG Tankless Gas Water Heater, product detail view, gallery image 4

6-20L LPG/NG Tankless Gas Water Heater, product detail view, gallery image 3

6-20L Flue Exhaust Tankless Gas Water Heater, product detail view, gallery image 3

6-14L LPG Tankless Gas Water Heater, product detail view, gallery image 8

6-20L Flue Exhaust Tankless Gas Water Heater, product detail view, gallery image 2

6-20L Flue Exhaust Tankless Gas Water Heater, product detail view, gallery image 4

6-12L Instant LPG/NG Gas Water Heater, product detail view, gallery image 6

6-20L LPG/NG Flue-Exhaust Gas Water Heater Capacity Series

Name: 6-20L Flue Type Gas Water Heater for Residential Hot Water Supply
Brand: KECHANG

6-20l flue type gas water heater for apartments is a B2B option for gas water heater installation, OEM/ODM sourcing and export orders. Confirm fuel type, capacity, water pressure, packaging and destination-market requirements before ordering. 6-20L flue type gas water heater for LPG/NG OEM and wholesale programs. Confirm fuel, capacity, water pressure, flue route, installation space, panel, packaging, sample, and destination-market requirements before ordering.

For an accurate quotation: include the application, country, capacity mix, annual quantity, and delivery schedule.

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6-20L flue-exhaust residential series: capacity and installation planning

This 6-20L flue-exhaust LPG or natural-gas series is for residential buyers who need to match capacity with hot-water demand, wall space, flue route and service access. The range should be specified by the final chosen capacity rather than treated as one generic heater.

Capacity and chassis reference

Capacity	Rated heat load	Product size (mm)
6L	12KW	440 × 300 × 120
8L	16KW	520 × 320 × 155
10L	20KW	590 × 340 × 180
12L	24KW	620 × 340 × 180
16L	32KW	650 × 395 × 188
20L	40KW	700 × 440 × 188

Residential 6-20L selection checklist

Choose the capacity from actual outlet demand.
Confirm LPG or natural-gas configuration for the destination market.
Check flue routing, ventilation, wall dimensions and service clearance.
Review the stated 0.02-0.8MPa operating-water-pressure range.
Confirm the required panel, display, valve, heat-exchanger and packaging options.

Residential-series FAQ

Does 6-20L describe one fixed model? No. It describes a capacity range; the selected capacity must be defined for the final order.

What should be checked before quotation? Capacity, gas configuration, water condition, flue route, installation space, packaging and destination-market requirement.

Gas water heater 6L-20L flue type model for LPG and NG use designed for home and OEM supply.

Flue Type Gas Water Heater Product Details

Product Details

Capacity: 6L-20L

Fuel Type: LP Gas & Natural Gas

Water Pressure: 0.02-0.8MPa

Thermal Efficiency: ≥85%

Heat Exchanger Material: Copper

Ignition Type: Auto Ignition

Power Source: Battery, Gas

Exhaust Way: Flue Exhaust

Features

1. Flue exhaust instant gas water heater;

2. Low water pressure start-up function, big flow rate;

3. White or any color powder coating, SS, glass panel;

4. Fully water-controlled automatic impulse ignition;

5. Flame-out protection;

6. Anti-dry combustion protection;

7. Over-pressure and water drainage anti-freezing protection (optional);

8. Overheating protection;

9. Advanced combustion system with the Winter/summer switch to save energy (optional);

10. 20 minutes auto-off (optional);

11. Colorful LCD temperature display to know water temperature and working status (optional).

Product specification

Product loading quantity

Series	Hot Water Supply L/Min △t 25°C	Rated Heat Load	Product Size(mm)	Packing Size(mm)	Loading Quantity 20GP/40HQ(PCS)
1	6L	12KW	440300120	520335180	900/2150
2	7L	14KW	500300155	610355190	680/1640
3	8L	16KW	520320155	610370205	610/1460
4	10L	20KW	590340180	670405230	465/1070
5	12L	24KW	620340180	710405230	430/1010
6	14L	28KW	650395188	720460240	350/840
7	16L	32KW	650395188	720460240	350/840
8	20L	40KW	700440188	800490240	290/710

Customised service

Heat Exchanger

Tin-coated copper or Oxygen-free copper optional.

Heat exchanger weight: 0.8～4.0 Kg

Valve

Zero-water-pressure valve or Normal water-pressure valve.

Knob and Display Options

Gas Water Heater Factory FAQ

Q1: Are you a gas water heater factory?
Yes. We are a professional gas water heater factory founded in 1997, with experience in OEM and ODM production.

Q2: What is your MOQ?
Our MOQ is 50 pieces per model.

Q3: How long does it take to prepare a sample?
Sample preparation usually takes 10 to 20 days, depending on the model and customization requirements.

Q4: Do you accept OEM orders?
Yes. OEM orders are welcome. We can support customized branding, packaging, and product specifications.

Q5: What is your delivery time?
The standard delivery time is about 30 days after the order is confirmed and the deposit is received.

Q6: What are your payment terms?
Our payment term is T/T: 30% deposit in advance and 70% balance before shipment

.Shipping Ports: Zhongshan, Guangzhou, Shenzhen

For more questions about gas water heater OEM production, MOQ, samples, or delivery, please contact us.
WhatsApp: +86 158 7604 6823

6-20L flue-type model selection

A wide capacity range should be divided by real use case. A compact household installation and a higher-demand project may need different capacity, gas, flow, exhaust, and service assumptions.