Types of Water Heaters
Power Vent (PV)- Conventional Vent (CV)- Tankless
Which One Is Right for You?
When it comes to heating water for your home, not all systems are built the same. Choosing the right water heater can save you money, reduce energy use, and make sure you never run out of hot water when you need it most. Let’s break down the three main types of water heaters you’ll find in most Canadian homes — Conventional Vent (CV), Power Vent (PV), and Tankless — and what makes each one unique.
1. Conventional Vent (CV) Water Heaters
A Conventional Vent water heater is a natural gas or liquid propane, the classic tank-style unit most people grew up with. It uses natural draft venting (no fan assist) — meaning it relies on the hot air rising naturally through a metal vent pipe (usually connected to a chimney or chimney liner) to push combustion gases outdoors.
Pros:
Simple and reliable design
Lower upfront cost
Easy replacement if you already have one
Cons:
Less energy-efficient compared to newer models
Requires proper chimney ventilation
Slower recovery rate if you use a lot of hot water
Average lifespan: about 10–15 years, depending on your water quality. Hard water or high mineral content can shorten its life.
2. Power Vent (PV) Water Heaters
A Power Vent (PV) water heater still uses a storage tank, but it adds an electric fan to push exhaust gases outdoors through PVC pipes instead of a metal chimney and draft. This gives you more flexibility in where you install it — like in a basement or area without a chimney.
Pros:
More efficient than a conventional vent
Flexible venting options (horizontal or vertical)
Safer indoor air quality due to powered exhaust
Cons:
Slightly higher installation and maintenance cost
Needs electricity to run the fan
Average lifespan: also 10–15 years, depending on local water conditions and regular maintenance.
3. Tankless Water Heaters
Also known as on-demand water heaters, these systems heat water only when you need it — No storage tank required since is on-demand so when you turn on the tap, cold water flows through a heat exchanger and is instantly warmed by Natural gas or propane or electricity.
Pros:
Endless hot water supply
Extremely energy-efficient
Space-saving and wall-mounted design
Longer lifespan (often 20+ years with proper maintenance)
Cons:
Higher upfront cost
May need upgrades to your gas line or venting
Hot water delay in larger homes if not sized correctly
- in some situation needs to upgrade the gas piping or gas meter since are higher BTUs compare to Tank water heaters.
Final Thoughts
Whether you’re replacing an old unit or upgrading for efficiency, understanding the differences between Power Vent, Conventional Vent, and Tankless water heaters can help you make the right decision. Each system has its strengths — the key is finding what fits your home’s layout, budget, and hot water needs.
At Aurora Star Tech Inc., we install, repair, and maintain all types of water heaters across the GTA. Our licensed technicians can help you choose the perfect system and make sure it runs efficiently for years to come.