Tankless Combi Boiler

Do you have a water heater and a boiler in your home? Imagine one unit that could provide both heat and hot water!

Tankless combi boilers are the latest in domestic heat and hot water technology. They can seamlessly replace your hot water boiler and hot water tank.

Navien’s Combi Boiler product line includes:

• NCB-180 95% AFUE | 3.4 GPM | Space Heating 14,000-80,000 BTU | Best for small homes
• NCB-210 95% AFUE | 4.0 GPM | Space Heating 18,000-100,000 BTU | Best for medium-sized families (1-3 people) and homes with moderate water use
• NCB-240 95% AFUE | 4.5 GPM | Space Heating 18,000-120,000 BTU | Best for homes up to 2500sq ft

We are a gas rebate contractor!

Below are some of the best natural gas rebates currently offered by FortisBC.

2018 Gas Water Heater Rebates

• Storage Tank – 0.67-0.70 EF – $200 Rebate
• Non-condensing Tankless – 0.82-0.89 EF – $400 Rebate
• Condensing Tankless – 0.90-0.99 EF – $500 Rebate

Non-condensing Tankless

Non-condensing tankless water heaters are also called instantaneous or on-demand, and they do not actually store water. Tankless systems may not be the best choice for large households as they can’t provide enough hot water for multiple simultaneous tasks. However, they free up square footage because of their compact size and are highly environmentally friendly.

Pros

• Energy Star models help reduce energy costs and your eco-footprint
• Space saving in design
• Lower price point compared to condensing models
• Wall-mounted
• Does not create condensation so a household drain isn’t required

Cons

• Most units will not work in the event of a power outage
• There is an approximate 10-second delay for hot water after turning on the tap because water is heated only when it’s needed

Installed cost: $3,000 to $4,000
Life expectancy: Approximately 20 years
Recommended maintenance: At least once a year

Condensing Tankless

Condensing tankless water heaters, also called instantaneous or on-demand, do not actually store water like a tank. Tankless systems may not be the best choice for large households as they can’t provide enough hot water for multiple simultaneous tasks. However, they free up square footage because of their compact size and are highly environmentally friendly.

Condensing tankless water heaters are the most efficient kind of tankless water heater, and drain is required for condensation.

Pros

• The most energy efficient, which helps reduce energy cost and your eco-footprint
• Space saving design
• Wall-mounted

Cons

• A drain must be available for condensation
• Most units do not work in a power outage
• There is an approximate 10-second delay for hot water after turning on the tap because water is heated only when it’s needed

95% AFUE |  4.0 GPM | Space Heating 17,000-100,000 BTU | Best for medium-sized families (3-4 people) and homes with high water use

• NCB-240

95% AFUE |  4.5 GPM | Space Heating 18,000-120,000 BTU | Best for larger-sized families (4-5 people) and families with high water use – Recommended storage tank add-on for families over 4 | Maximum heating space approximately 2,500 sq ft

Benefits of Tankless Combi Boilers

• Compact unit to save space! Replaces your hot water tank and floor standing boiler
• Extremely energy efficient
• Can increase home value
• Heats water as you need it
• Cleaner water (no storage required)

How Combi Boilers Work

Control valves inside of the boiler allow water to flow either to the central heating system or towards a hot water tap (shower head, faucet, etc.). Combi boilers work on a priority system giving priority to domestic hot water, and so they won’t produce heat and hot water at the same time. If you are trying to fill a bathtub and heat a room, the heat will resume once you have turned off the hot water. Most people find this isn’t an issue as radiant floors and baseboards retain heat well.

How is the water heated?

Cold water passes over a highly efficient heat exchanger which heats up when gas is burned. Over 90% of this heat is transferred to the hot water, and then it goes right to where ever you need it.

Why are Combi Boilers so efficient?

Since combi boilers do not store any hot water there is no heat loss associated with a tank of standing hot water. Water is heated as you need it, so the boiler only fires up when there is a need to produce hot water.

Can I replace my furnace with a Combi Boiler?

If you are looking to replace your forced air furnace with a hot water system, contact us to inquire about a furnace heat coil and water heater system. A combi boiler is intended to be used for radiant floor heat (via hot water) and domestic hot water and thus is not compatible with a forced air furnace. However, a tankless water heater can be used to heat your forced air furnace indirectly and provide your home with domestic hot water for bathing, drinking, and washing!