Navien On Demand Hot Water
With Navien Condensing on demand hot water, you get the best of both worlds : The Best Value and Ultra Condensing Efficiency, which offers fantastic savings and contributes to a green-friendly environment. Plus, the installation and venting processes are easy, cost effective, and Navien™ products are simply the best in quality and performance.
How Does It Work?
Navien’s tankless on demand water heaters can provide you with an endless supply of hot water. Navien’s tankless on demand water heaters provide hot water on demand. Navien achieves this by initiating the unit the second you open a hot water tap, supplying you with an endless supply of hot water.
Conventional tank water heaters eventually run out of hot water when you take multiple draws in a row from the tank.
Since Navien Condensing tankless water heaters only provide hot water when you need it and can provide an endless supply of hot water, you never have to worry about running out of hot water no matter how many hot water draws you have in a row.

About the products we use:
Navien Condensing Gas Combination Boiler NCB Series
Navien’s Condensing Combi Gas Boiler/Water Heaters are the ideal solution for customers who need both domestic hot water and a space heating application. Unlike conventional boilers, Navien’s Combi Gas Boiler/Water Haters heat water only when needed, making it environmentally sound as well as cost efficient.
Product Highlights
- Max Input : 150,000 – 199,900 BTU/H Indoor Only Residential Only
- Super condensing efficiency
- Dual stainless steel heat exchangers
- SCH40, 2” PVC venting up to 60’
- ½” Gas pipe up to 24’
- Automatic water filling system integrated controls
Navien Condensing Gas Tankless Water Heater NPE-S Series
Product Highlights
- Max Input : 150,000 – 199,900 BTU/H Indoor/Outdoor Installation
- Residential/Commercial
- ½” gas pipe capable up to 24’
- Field convertible gas system
- Ultra condensing efficiency .98EF
- Dual stainless steel heat exchangers
- Low NOx emissions (≤ 20ppm)
- SCH 40, 2” venting up to 60’
- Cascading capable
You can also find much more on Navien Tankless at: Navien
Sub Zero is a family-owned and operated mechanical contracting business.
SUB ZERO HEATING & COOLING Ltd.
636 Charlotte Street Duncan, BC, V9L2V6
250-597-8097
Serving the HVAC needs of Vancouver Island and the Gulf Island communities with honesty and integrity.