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FAQ

What is a zone in an HVAC system?

A zone generally refers to an area where its temperature can be independently regulated through the thermostat installed in that area.

For example, if a home has only one thermostat, then it has a single zone system. If a home has two thermostats for specific floors or rooms, each thermostat can independently call for heating or cooling. This is a dual-zone system.

What is zoning?

Zoning allows homes or offices to be divided into separate temperature zones, or room to room temperature control. Zoning provides a thermostat for each room or given area.

With zoning, only the area needing heating – via hot water in the piping – or cooling – via cold air through the ducting – will get it. Areas that are already at the desired temperature will stay at temperature until the thermostat is adjusted for more heating or cooling in those areas.

What is a zone valve?

A zone valve consists of an electric actuator – often called a powerhead – and a brass valve coupled to it. Zone valves are needed when one wants to add zoning to a house or building. Zone valves are installed inside a closed looped water-based heating and cooling system. And they’re wired to the thermostat for a specific zone.

When the thermostat calls for heat, the zone valve opens up and allows hot water to circulate through that zone. Once that zone reaches the desired temperature, the thermostat shuts off electricity to the motor in the zone valve. And the actuator on top of the valve automatically closes water off through its pre-wound internal spring.

Why do I need zoning?

If half of your energy bill is for heating and cooling, zoning can help you manage each area to the temperature you want, when you want it. Zoning conserves energy and helps you manage your costs.

Why VALEMO zone valves?

We asked seasoned HVAC technician, Tim H. what the most common frustrations about zone valves on the market are.

“Two of the biggest enemies of zone valves are heat and corrosion. The combination of the two can cause zone valves to “freeze up”, that is stop turning freely. The zone valve must turn to open and make an end switch, and as the valve becomes more corroded over time, it can seize and/or not open far enough to make the end switch.

I have seen many zone valves that have become so corroded over time that they just stop functioning. If you could find a way to eliminate or minimize the corrosion over time, that would be a big plus.”

As Tim mentioned, heat and moisture are a zone valve’s two biggest enemies. Our valves have been time tested for durability under the harshest conditions. We use stainless steel to resist corrosion and heat. And our FastFit™ powerhead can be quickly and easily replaced the without the hassle of draining the system. On top of that, we sell our valve at the same price as our biggest competitor. And we offer three times the warranty. Valemo offers value on every level. In our book it’s a no brainer. Of course, we are a bit bias.