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What Does High Pressure Have to Do With Boiler Repair?

Boilers are part of a hydronic heating system. A hydronic system uses either hot water or steam to heat your home. Your boiler needs to operate with a certain level of pressure in the system, but too much pressure can cause problems. We’ll explain more in detail below, but when it comes to heating repairs, there’s only one company to call: At Your Service Plumbing, Heating & Air. We have been helping customers with heating repair since 1980, and our NATE-certified technicians are available 24 hours a day, 7 days a week.

High and Low Pressure Boilers

When it comes to pressure, there are two types of boilers: high and low. Low pressure boilers are the ones used to heat buildings; high pressure boilers are used to generate steam for power. Examples of where a high pressure boiler is used would be Laundromats, dry cleaners and power plants. As such, the issues we’ll be discussing here pertain to low pressure boilers.

Reasons the Pressure May Rise

The normal pressure range for a boiler shouldn’t exceed 15 psi (pounds per square inch). If it does, it’s best to call for a technician. Here are some reasons why high pressure can develop in a boiler:

  • Problems with the expansion vessel – the expansion vessel helps regulate the pressure in your system. If it malfunctions, it can cause the pressure in your system to rise.
  • Problems with the expansion tank – the expansion tank is needed to accommodate for the expanding water levels in your system as the water is heated. Problems with the expansion tank, such as a clogged water pipe, the combination of too much water/too little air in the tank, or a defective tank, can all cause pressure to rise.
  • Trapped air in the system – pockets of air in your system, sometimes referred to as “air lock”, can sometimes cause the pressure to rise in your system.

The balance of correct pressurization in your boiler is critical to proper operation. As such, only a trained professional should work on any pressure problem with your heating system. Experiencing heating problems? Call At Your Service Plumbing, Heating & Air and schedule heating repair service in Salt Lake City with us today.


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At Your Service Plumbing, Heating & Air provides excellent heating, air conditioning, plumbing, indoor air quality, water treatment and water heater services throughout the greater Salt Lake City, UT area, including the installation of new systems and components, and the replacement of the old, as well as ongoing repair and maintenance. Established in 1980, we have served the home comfort needs of our local community for over 30 years. Whether you need your stop and waste valve replaced or a new "green," energy–efficient HVAC system installed, we can make sure that the job is completed properly. Our HVAC contractors are NATE–certified and we employ Master and Journeyman plumbers. We are confident in our ability to satisfy any issue that may arise in your home, 24 hours a day. Give one of our friendly staff members a call today to learn more about what we can do for your home.

At Your Service Plumbing, Heating & Air offers quality heating, air conditioning and plumbing services throughout the Salt Lake City, UT area, including repair, installation and maintenance.

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When it comes to ensuring that you are comfortable during the winter months in Salt Lake City, you need to make certain that you have an excellent heating system. We offer comprehensive heating services in Salt Lake City, including installation, replacement, repair and maintenance services for a wide variety of equipment, including boilers, furnaces, and radiant heat systems. Whether you’d like to save more on your energy bills from month to month with an energy efficient heater or you want to retrofit a zone control system into your existing furnace setup, we provide heating solutions.

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For truly year–round comfort, your home needs an excellent air conditioner. At Your Service Plumbing, Heating & Air offers excellent air conditioning services throughout the Salt Lake City, UT area, from AC repair to maintenance, installation to replacement. We can make sure that your entire home is cooled to your satisfaction, no matter how hot and unpleasant it gets outside. We want you to feel comfortable in your home, and we have the experience and expertise to make sure that this is the case.

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Our services go well beyond HVAC, however. In addition to providing heating and cooling solutions, we provide a wide range of plumbing services throughout the Salt Lake City, UT area. From whole–house repiping to drain cleaning, water line installation to leak detection, sprinkler system timer repair to kitchen plumbing, we have got you covered. We can make sure that you are able to use water safely, effectively, and efficiently in your home.

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