What Is a Hydronic HVAC System?

What Is a Hydronic HVAC System?

When you choose to install hydronic systems in your home, you will be maximizing the efficiency and effectiveness of your HVAC system. You’ll also be able to improve comfort throughout your home without having to rely on multiple different heating technologies.

What Is a Hydronic HVAC System?

A hydronic heating system delivers hot water through radiant tubing that runs behind the walls of a house or building. This heated water is then pumped back into a boiler where it is reheated and sent through the tubing again before being recycled once more.

The Benefits of Hydronic Heating Systems

There are several benefits to installing a hydronic heating system in your home. These systems are extremely energy-efficient, and they allow homeowners to use a single, reliable heating source for their entire home.

Residential hydronic heating systems can be used as complete replacements for standard forced air systems that only heat the air in a room or as supplemental heat sources that can be connected to existing forced-air heating systems. In addition to being able to work with forced air technology, hydronic heating systems can also be installed independently of other HVAC technologies.

Types of Hydronic Heating Systems 

There are two main kinds of hydronic heating system options:

  • Closed-loop –This type of hydronic system requires no exposed piping because all tubing is either insulated or enclosed within walls or ceilings once installation has been completed. Systems with closed loops are typically installed underneath a house or building’s flooring, and they do not require any kind of pump.
  • Open-loop – This type of system is more complex than the closed-loop method because it requires an open channel for tubing to be set up on the ground outside of a structure. It also needs to have access to groundwater that can be used as a continuous source of heated water through a device called a well manifold. The manifolds distribute hot and cold water throughout the hydronic system so you’ll have an even temperature distribution throughout your home.

How Heating Systems Work

What Is a Hydronic HVAC System?

Hydronic heating systems work by recirculating hot water from a boiler back into the tubing that runs through walls and floors, where it emits heat into the structure. The water eventually cools down and is sent back to the boiler in order to start the process all over again. Hot water in hydronic systems can be stored for long periods of time, so homeowners won’t have to worry about whether or not they’ll have enough hot water on hand during times when it’s being used most heavily.

What Are Hydronic Heating Systems Typically Made Of?

The materials used in hydronic heating systems are highly durable because homeowners will rely on them to last for many years. Copper tubing that’s covered with aluminum or galvanized steel sheathing forms the basis of most residential hydronic heating systems. This type of tubing has a protective covering that prevents it from being damaged by aggressive chemicals, and it is able to help distribute heat evenly through a system thanks to its rigid and sturdy construction.

How Much Do Hydronic Heating Systems Cost?

Hydronic heating systems are typically more expensive than forced-air heating systems because they require more sophisticated planning and installation techniques. When homeowners choose this type of HVAC system, their initial investment will typically include the cost of materials for tubing installations and any additional labor costs such as hiring an expert to run any necessary electrical wiring.


A hydronic HVAC system is a great investment for your home. Not only does it provide heating and cooling, but it also humidifies and dehumidifies the air in your home. If you’re interested in installing a hydronic HVAC system in your home, be sure to contact K2 Mechanical. We would be happy to help you choose the perfect system for your needs and install it quickly and efficiently so that you can start enjoying its benefits right away.

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