Dew Point: What Is It and How It Affects Your Home’s Boiler

5 Jan by Will Kruse

Dew Point: What Is It and How It Affects Your Home’s Boiler

Your boiler is one of your home’s most essential appliances. They provide adequate hot water and heating to ensure everyone stays comfortable, especially during the cold season. The latest models can also help reduce your bills, thanks to their energy efficiency.

However, as you prepare your heater for a warm night, you might wonder what a dew point is. You always hear your local meteorologist discuss it during the daily weather forecast, but did you know that it can also affect your heater?

This article will define dew point and how it affects your home’s heating system.

What Is a Dew Point?

We closely associate the dew point with the “relative humidity” (RH) we see on our weather apps.

The dew point happens when the air is highly saturated with water vapor and can no longer hold more moisture. It’s the point of no return for return and a more reliable indicator of how we’ll feel the air’s comfort level. It’s beneficial it feels cold outside because the RH won’t change significantly when the temperatures drop below the freezing point.

Therefore, if the dew point is higher than the outside temperature, you can quickly feel the humidity and thoroughly plan for a muggy day.

Where to Find Dew Point in Action?

The dew point is the required air temperature to cool the moisture in the air to let it transform from vapor to liquid.

At some point in your daily life, you’ve probably witnessed a practical example of a dew point but didn’t pay much attention to it. You’d know a dew point’s effects whenever you spot condensation on a cold glass on a sunny day, a puddle on your coaster, or droplets settled on your lawn early in the morning.

How to Determine the Dew Point Temperature?

While the previous explanations may seem simple, you can determine the dew point temperature by the following factors: outdoor temperature, air pressure, and humidity.

How Can It Affect My Daily Life?

While it may be easy to disregard and have an intimidating scientific explanation, the dew point can be an essential indicator when you want to accomplish specific tasks. We strongly discourage painting and wood repairs on warm days when the dew point is close to the same air temperature.

The high moisture content in the air will cause the paint not to dry effectively and may even cause the wood to expand. These phenomena will lead to swollen doors and sticking windows.

Moreover, improper paint drying can cause peeling, bubbling, and discoloration.

How Does the Dew Point Affect Your Boiler?

Whether replacing an outdated boiler or setting up a new heating system, heater repair services highly encourage you to check the temperature of the water returning to the boiler. Extremely high temperatures won’t let the boiler achieve the dew point, which will not cause moisture to condense.

On the other hand, the low returning water temperature will help the boiler reach the dew point. That will enable the heating system to get to the dew point, allowing the moisture in the air to transform into water droplets and return the energy to the unit. That way, it decreases fuel usage and increases efficiency.

What Is the Ideal Temperature for Your Boiler?

If you want to maximize your boiler, ensure it can condense the produced exhaust when burning natural gas. Condensation will form if the returning water’s temperature is colder than 130ºF (55ºC). Consult a heater repair company and let them ensure your boiler is functioning correctly.


Your boiler is one of your home’s significant investments. Understanding dew point, how it affects your heating unit, and working with reliable heater repair services can help you take advantage of your home appliance.

If your home needs a heater repair in Berkeley, we can help. L.J. Kruse Co. is a family-owned company providing professional heater services. Our experienced team is ready to serve residential and commercial clients. Contact us to schedule your services today!

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