Is a hot water recirculating pump worth it?

A hot water recirculating pump is absolutely worth it for many Ottawa homeowners — it eliminates the wait for hot water and can actually reduce water waste significantly. Whether it makes financial sense depends on your home's layout and how much that daily wait frustrates you.

How Recirculating Pumps Work

A recirculating pump keeps hot water continuously moving through your pipes so it's instantly available at every tap. There are two main types: a dedicated return line system (built into newer homes with a separate pipe running back to the water heater) and a comfort system that uses your cold water line as the return path. The comfort system is far more common in Ottawa's existing homes since it doesn't require opening walls to add new piping.

Most modern systems use a timer or temperature sensor so the pump only runs during peak hours — morning and evening — rather than 24/7. This keeps operating costs reasonable. Some newer models use smart home integration and learn your schedule automatically.

The Real Costs and Savings

In Ottawa's housing stock, where older homes often have long pipe runs from the basement water heater to upper-floor bathrooms, the wait for hot water can be 30–60 seconds or more. A family of four can waste 8,000–12,000 litres of water per year just waiting for hot water to arrive — and with Ottawa water rates, that adds up. Installation typically runs $500–$1,000 for a comfort system on an existing water heater, and the pumps themselves draw very little electricity (around 25–45 watts when running).

The payback period on water savings alone is usually 3–5 years, but most homeowners say the daily convenience is the real selling point. If you have a large home, a master bathroom far from your water heater, or young kids who leave the tap running while waiting, the value is clear.

One Important Consideration

If you have a tankless water heater, make sure the pump you choose is compatible — not all recirculating systems work well with on-demand heaters, and pairing them incorrectly can cause short-cycling and premature wear. Your plumber should confirm compatibility before installation. A permit is typically not required for this type of installation in Ottawa, but confirm with your licensed plumber as requirements can vary.

If you're already planning a water heater replacement or bathroom renovation, it's a great time to add a recirculating pump since the labour costs overlap nicely. For a free estimate on installation, feel free to reach out to Ottawa Pro Plumbing — it's a straightforward job for an experienced plumber and usually done in a few hours.