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

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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 3

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

6-20L Flue Exhaust Tankless Gas Water Heater, product detail view, gallery image 5

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

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

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

6-20L flue exhaust tankless gas water heater for OEM and wholesale programs requiring a defined flue configuration. Confirm LPG/NG, capacity, water pressure, flue route, installation space, panel, packaging, and local requirements before ordering.

For a project quotation: send the destination country, application, capacity mix, annual quantity, sample needs, and delivery schedule.

Place of Origin: China

Minimum Order Quantity: 50 pcs

Payment Terms: L/C, T/T, Western Union

Supply Ability: 30000 pcs per month

Port: Zhongshan, Guangzhou, Shenzhen

Delivery time: By T/T, within 30 days after receiving 30% deposit

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6-20L Flue-Exhaust Tankless Series for Residential Capacity Planning

This page covers the broad listed 6L-20L flue-exhaust range for residential hot-water planning. Published details include LPG or natural gas, 0.02-0.8 MPa water pressure, copper heat exchanger, automatic ignition and battery power.

Capacity-planning brief

Select the capacity mix from the listed 6L-20L range based on actual outlet demand.
Confirm LPG/NG configuration and the destination-market requirements.
Provide installation space and flue-route information for technical review.
Specify required panel, packing and manual language.

Use this page for a broad residential flue-exhaust capacity plan rather than a single 10L LCD, flow-sensor or premium-panel enquiry.

Product Details

Capacity: 6～20L

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

6-20L Flue Exhaust Tankless Gas Water Heater, front product view, product detail page

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

6-20L LPG and natural gas tankless gas water heater, product detail view

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

Tin-coated copper gas water heater heat exchanger Oxygen-free copper gas water heater heat exchanger

Valve

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

Gas water heater low-pressure and normal-pressure valve options

Knob and Display Options

Gas water heater control knob and digital LCD 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

Flue exhaust tankless model qualification

Flue-exhaust tankless products should be assessed against the full installation environment. A buyer should provide the flue route, room conditions, gas type, water pressure, capacity demand, service access, and local installer requirements.