

Boiler Services in Seattle, WA
Western Washington's Source for
Expert Boiler Services
Over the years, hydronic (hot water) heating has been used in the best comfort systems in a wide range of new and traditional homes. Hydronic heating is a method of heating that uses hot water instead of air. With hydronic heat, you get two types of heat delivery: radiant heat and convected heat. Radiant heat warms you directly, just like the sun’s rays. Convected heat is carried by warm air circulating in a room.
Hydronic heat lets you choose from several different devices that use these two heating processes. Hot water from a boiler can be piped to radiant tubing hidden in the floor, to slim baseboard radiators, or to stand-alone radiators. Hot water can also be circulated through a coil in your central air conditioning unit to heat other living spaces with warm air. Plus, hydronic heating produces more hot water for cooking, washing, hot tubs, swimming pools, and even radiant sidewalks and driveways to melt ice and snow.
Boiler heating systems work by heating water and dispersing heat via the radiator. The system converts water to either hot water which then moves through the pipes to radiators to release heat inside the home. As this happens, the water is simultaneously rerouted back to the boiler where it is recycled and reheated for future heating.
Advantages of Residential Boiler Heating Systems
- Clean form of heating that doesn’t produce dust particles and other allergens. Since heat in a boiler system radiates out from the radiator into air that already exists, no new air is entering the space. In forced air systems, the new air is what oftentimes causes dust and allergens to infiltrate the atmosphere.
- Comfortable, high-quality heat is what you get from a boiler system. Heat from a radiator infuses the room, opposed to being forced through ductwork and out a vent. This gives radiator heat a different, fresher feeling than forced air systems and disperses the heat more evenly.
- Special features like user-friendly programming and zoning capabilities are a major benefit. Users can distinguish various heating zones within the home based on living space usage patterns. Programmable thermostats enable the automating of start-stop heat delivery as well.
- Quiet operation is another perk of boiler systems. Unlike forced air systems that produce noise as air circulates out the vents, a boiler heating system’s operational noise is confined to inside the boiler. The rest of the system is virtually silent.
- Longevity of a boiler heating system depends on several factors. The system must be well-maintained and annually serviced to keep it performing efficiently. Some boiler systems last only 10 years, others may last several decades. It’s all about the regularity of service and inspections to keep a system maintained for the long run.
How Important is Boiler Maintenance?
Just like forced air systems, boilers require inspections, maintenance, and the occasional part replacement to extend lifespan and maintain efficiency. If you are considering upgrading your system, it’s possible to keep your existing unit. Brennan Heating & Air Conditioning is highly experienced at installing new boilers and retrofitting original systems in and around the Seattle area, which boosts efficiency, as well as increases the safety of the home.
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“The service was extremely professional, courteous, respectful, and knowledgeable. We loved Dakota & Brian!”- Lloyd N.
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“They showed up the next day and were very professional and efficient! Scott and Vince were quick, and I really appreciated their help. I live nearby, so I'll definitely be calling this place for future electrical stuff”- Jason F.
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“The services provided by the Brennan staff were outstanding. Sergio & James were on time, completely explained the 5 W's before starting, they were efficient, cleaned up as they worked, explained how each part of the system functioned.”- Steve S.
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“Bryan & Michael arrived early as I requested and worked hard to clean the furnace vents, returns, and ductwork, including the dryer vent. Our daughter had recently used Brennan & recommended the company. I am delighted with the results.”- Janie H.
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“Excellent and efficient service. Brayan Rodriguez and Giovanni did a great job. Brennan will be my go to for services needed”- Diane V.
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“Brennan Technician knew how to test the safety system and repair it. They had the parts on the truck and fixed it in half an hour. Service visit and repairs came to about $300. Part was under warranty after nine years.”- Mike D.
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“I had Brennan come today to clean my air ducts. Since this was the first time having it done, it was reassuring to know it’s a pretty simple & fast process, and totally affordable. You're always in good hands with them.”- Sandy M.
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“Brennan guys are the read deal. They showed up on time, were very professional, and completed on time and on schedule. They definitely know what they are doing. I would recommend this company to others. Excellent value for money.”- Serghei A.
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Smarter, Safer, & More EfficientFrom high-efficiency HVAC installs to LED lighting upgrades and surge protection, we’re here to improve the way your home feels—and functions—year-round.
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Award-Winning CareMulti-year Angie’s List Super Service Award winner with an A+ BBB rating, Brennan is Seattle’s trusted partner for top-tier heating, cooling, and electrical services.
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Integrity Meets InnovationFrom certified energy consultants to licensed electricians, our team brings you forward-thinking solutions backed by time-tested values of honesty, reliability, and expert care.
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Trusted Since 1987With decades of experience and thousands of satisfied customers, Brennan delivers worry-free heating, cooling, and electrical solutions with service you can count on.
